Mackerel Icefish: Right. It is starting to get a bit cold around the countryside so I thought this may be of interest.
It is a fish found only in the Southern Ocean and are mainly Heard and McDonald Islands, and islands in the south Atlantic such as South Georgia.
They are found in depths up to 700m with older juveniles and adults forming large schools at or near the sea bottom or mid-water range of the water column, feeding on krill and small fish.
They grow quite quickly and mature at a length of between 22cm to 26cm after about three or four years. They grown to about 35cm.
Apparently the flesh is white and firm like the King George Whiting but with a higher oil content. They are good for grilling, baking or steaming.
Moon Jellyfish: It is rare for these to live more than six months in the wild but they are really interesting.
All species in the genus are closely related and is hard to pick them apart except by genetic sampling.
They grow to about 25–40cm in diameter and can be recognized by its four horseshoe-shaped gonads, easily seen through the top.
It is not really a strong swimmer and it mainly drifts with the current feeding on plankton, fish eggs, small organisms and molluscs. It captures food with its tentacles and scoops it into its body for digestion.
Moon Jellyfish are found throughout most of the world’s oceans, from the tropics to as far north as latitude 70°N (runs through the middle of the US and Spain) and as far south as 40°S (runs through Tasmania).
It has also been found in waters as cool as 6C to as warm as 31C.
They do not have any respiratory parts such as gills, lungs, or trachea so it respires by diffusing oxygen from water through the thin membrane covering its body.
The photo above was sent in by a friend of a friend who came across the dead fish at Goolwa in South Australia this week and was unsure what it was.
I sent it to Alastair Graham who is the Fish Collection Manager at the Australian National Fish Collection in Hobart. As expected Alastair was a font of fishy knowledge.
“The photo does not show all the diagnostic characters, however I would say that it is most probably a Shaw’s Cowfish (Aracana aurita). They are normally found on coastal rocky reefs and seagrass areas at 10-160 metres. Not being strong swimmers, they are often found washed-up after storms.”
I had to laugh when Alastair said it was was not a good swimmer – seems pretty important to a fish…
Anyway, they are found around southern coastal waters of Australia from central New South Wales to south west Western Australia.
By Dr Megan Clark, CSIRO Chief Executive
Some of you may have seen a series of articles in the local media covering a range of topics in relation to CSIRO. I would like to share with you the opinion piece, below, in response.
For 87 years, CSIRO science has been supporting Australia’s national growth. CSIRO has not done that by standing still, and over a decade ago a radical transformation of the way we deliver our science was undertaken.
To remain relevant to the nation and to answer the complex questions for society, we needed the courage to transform. For example it is no longer enough for farmers merely to have the best crop varieties. For the next level of productivity they need the best farming systems, the best sensors, the best water efficiency and soil knowledge. They need all of these answers delivered in a connected way.
CSIRO provides these answers through its flagship program, multidisciplinary challenge-focussed groups that bring together the best minds and research. Was this the right decision? Yes it was, and others around the world agree with us: the Grand Challenges program in Canada and the INRA metaprogrammes in France are just two examples of similar responses. But to maintain the solutions focus requires a balance with science excellence.
We hold ourselves accountable to those who are passionately committed to quality science, our former employees, our clients and the Australian public and I agree with those who demand science excellence. How do we do this? We subject our experiments, our papers, our fields of research, our output and our operations to rigorous scrutiny.
Each flagship and research division brings in a team of international experts every three to four years. The experts examine many dimensions of our work, make recommendations and when we receive criticism we act.
We respond by increasing investment in some areas of science, building on areas and exiting from others, making decisions that balance our budget constraints with our science goals. If a review shows we are not performing in a science area, we build, we exit or we transform that area. There is no standing still in CSIRO.
For example, in 2009 the Earth Sciences and Resource Engineering review decried the publication rate. In only three years this rate has doubled. CSIRO’s geoscience standing has for the first time entered into the ranks of the top 0.1 per cent of global institutions. And this has been achieved at a time when technology from this division is helping the mining industry in 19 of the 31 Australian long wall mines, for both productivity and safety gains.
As some have feared, the CSIRO transformation has not curtailed our science. Here are some of the facts: Our ranking is in the top ten of all institutions in the world for three scientific fields: environment/ecology, agricultural science, and plant and animal science. This is equal with the standing of research heavyweights such as Oxford and Yale Universities, an extraordinary achievement for an Australian institution.
In 2012 we had record engagement with industry, record licenses of our IP and a record publication rate. Our mandate as an applied science organisation goes beyond research. CSIRO is Australia’s largest patent holder with 3582 live patents, 728 inventions, 275 trademarks and 83 plant breeder rights. We have particular strengths in measurement, biotechnology, materials (metallurgy) and computer technology, winning the prestigious European Inventor Award from the European Patent Office last year for the CSIRO team that invented fast wireless LAN.
CSIRO partners with 38 of the 40 universities in Australia and has connections with 72 countries. These relationships help train future researchers and build international scientific connections. We recruit, train and mentor hundreds of young scientists each year in schools, as university students and as doctoral candidates.
Building science capability for Australia is an important part of CSIRO’s culture. We know our people like the work and find it meaningful. Exit interviews invariably tell the same story “I loved my work here because I knew it was making a difference”. Our externally conducted staff survey tells us our people are more engaged than ever before. Our absentee rate is less than half that of the Australian Public Service and our turnover is low.
This contemporary view of CSIRO as evidenced in our staff measures, has also been validated by our external clients. In a recent pilot client survey, the average willingness-to-recommend score was 8.6 out of 10. Our long term research alliances with Boeing, GE, Orica and many others are a further validation of our contribution to industry.
We do have areas to improve. We have had claims of unacceptable behaviour made by former employees and I have addressed those directly. A number of internal actions are in place as well as an independent external review which is underway. CSIRO has been criticised by some for being silent on this issue but we must respect the privacy of all involved and it is not appropriate to discuss or defend details of alleged cases in public.
The men and women who work at CSIRO are among the most passionate, committed and hard working in Australia. It is a privilege to lead CSIRO and I am proud of the evidence I get every day of the difference we make to the lives of Australians.
I read the other day about a theme park in Japan which had suspend sales of helium-filled balloons because of a temporary global shortage in the gas. Like a lot of things which flit across the internet powered computer screens of today, it pays to have a bit deeper dig before taking some of the claims to the street.
It turns out the estimated worldwide helium reserves are forecast to last for about the next 300 years at today’s usage rates – hardly a reason to stockpile.
Anyway, putting that aside, I started to read up on helium and it is a very interesting gas. Read on.
Colorless, odorless, tasteless, non-toxic, inert, AND monatomic (one atom), helium’s boiling and melting points are the lowest among the elements and it exists only as a gas except in under extreme conditions.
While it is the second lightest element, it is also the second most abundant element in the observable universe. That means that at about 24 per cent of the total mass, it is more than 12 times the mass of all the heavier elements combined.
On Earth it is rare. Most helium is created by the natural decay of heavy radioactive elements (thorium and uranium) and is trapped with natural gas in concentrations up to 7 per cent by volume. The greatest natural concentrations of helium are found in natural gas, from which most commercial helium is extracted.
About a quarter of the helium we use is for keeping stuff cool, particularly superconducting magnets, such as those used in MRI scanners. (Apparently, the second largest use is at parties for blowing up balloons and for inhaling to make your voice squeaky.)
The US is the largest supplier of helium. The bulk extraction of helium in the US began after an oil drilling operation in 1903 Kansas produced a gas geyser that would not burn. It was analysed and found that 1.84 per cent of the gas sample was helium and there were great wads of it under the American Great Plains.
As it is Good Friday I thought I would look into the association of fish with Christianity and religion in general. However, that turned out to be way too hard and full of potholes I just could not be bothered navigating around – and I’m trying to pack the swag for camping.
So, rather that concentrate on one fish I have “researched” Wikipedia for a description of all fish.
Here you go:
A fish is any member of a paraphyletic group of organisms that consist of all gill-bearing aquatic craniate animals that lack limbs with digits. Included in this definition are the living hagfish, lampreys, and cartilaginous and bony fish, as well as various extinct related groups. Most fish are ectothermic (“cold-blooded”), allowing their body temperatures to vary as ambient temperatures change, though some of the large active swimmers like white shark and tuna can hold a higher core temperature.
Fish are abundant in most bodies of water. They can be found in nearly all aquatic environments, from high mountain streams (e.g., char and gudgeon) to the abyssal and even hadal depths of the deepest oceans (e.g., gulpers and anglerfish). At 32,000 species, fish exhibit greater species diversity than any other group of vertebrates.
The earliest organisms that can be classified as fish were soft-bodied chordates that first appeared during the Cambrian period. Although they lacked a true spine, they possessed notochords which allowed them to be more agile than their invertebrate counterparts. Fish would continue to evolve through the Paleozoic era, diversifying into a wide variety of forms. Many fish of the Paleozoic developed external armor that protected them from predators. The first fish with jaws appeared in the Silurian period, after which many (such as sharks) became formidable marine predators rather than just the prey of arthropods.
By Sarah Wilson
Today is World Water Day. In the spirit of this day I would like to pay homage to all things freshwater. In particular I would like to draw your attention to a peculiar fish found in the depths of the largest freshwater lake in the world : behold the Golomyanka.
OK, I admit it is a rather unassuming looking fish, but looks can be deceiving. Golomyankas, also known as Baikal oilfish, are only found in one place in the world – Lake Baikal . This UNESCO World Heritage Listed Lake is located in nippy Siberia. It is 25 million years old, contains one fifth of the world’s unfrozen freshwater, and is home to a staggering number of plant and animal species found nowhere else in the world. Earning it the nickname of ‘the Galapagos of Russia’.
As for the fish, it’s pretty amazing too:
Amazing fact No. 1: They are the world’s most abyssal fish. This means they live in the entire range of depths found in Lake Baikal. That’s a span of up to 1700m below the surface of the water. The pressure of going to these depths would easily crush a human.
No. 2: They rapidly melt in sunlight leaving only oil, fat and bones. (Imagine that!)
No. 3: It is one of only a few viviparous fish in the world. Viviparous means that it doesn’t lay eggs, but gives birth to live young . It gives birth to up to 3000 larvae at a time.
No. 4: They are a primary food source for the Lake Baikal’s nerpa seal. One of the few exclusively freshwater seal species found in the world.
No 5: They have a high fat content (over a third of their body weight is made up of fat). Native Siberians have been known to use them as fuel for their lamps.
By John Sarkissian
About the author
John is an Operations Scientist at the CSIRO Parkes Radio Observatory. His main responsibilities are operations and systems development, and the support of visiting astronomers with their observations. John is a member of the Parkes Pulsar Timing Array team that is endeavouring to use precision pulsar timing to make the first direct detection of gravitational waves. In 1998–99 he acted as a technical advisor for the film The Dish. John has received two NASA Group Achievement Awards and, in 2010, received an official NASA commendation for his search for the missing Apollo 11 tapes.
UPDATE: They have found the engines. How hard can it be to find some video tapes!
It was one giant leap for mankind and it was taken at 12:56 PM (AEST) on 21 July 1969. Six hundred million people, one sixth of mankind at the time, witnessed the Apollo 11 moonwalk live on television.
As a six-year-old school boy, I was one of those millions. Sitting cross-legged on the floor of the school assembly room with my fellow first graders, we watched the events unfold on a small black and white television screen perched at the front of the assembly room. We were spellbound by the dark, fuzzy images flickering on the screen. How did they do it? How did those pictures get from the Moon to my Sydney school? Why were the pictures so dark and ghostly looking?
Little did I know then, but three decades later I would find myself working at the CSIRO Parkes Observatory, at the very place those images were received and that I would have the opportunity to answer those childhood questions. This article is a personal account of my research into the Parkes support of Apollo 11 and how it eventually morphed into a search for the missing Apollo 11 tapes. It’s been a roller-coaster ride, with many highs and lows plus a few twists and turns to make it interesting. Along the way, I’ve met many fine and dedicated people, some of whom are now close friends. This is our story.
At 12:54 PM (AEST) Buzz Aldrin switched on the lunar module camera that would transmit the TV pictures of Armstrong descending the lunar module ladder. Three tracking stations received the signals simultaneously. They were the 64-metre Goldstone antenna in California, the 26-metre antenna at Honeysuckle Creek near Canberra and the CSIRO 64-metre dish at Parkes. The signals were relayed to Houston, where a controller selected what he thought were the best pictures for release to the US television networks and distribution to a worldwide audience.
In the first few minutes of the broadcast, Houston alternated between its two stations at Goldstone and Honeysuckle Creek, searching for the best quality pictures. When they finally switched to Parkes, the pictures were so much better that they stayed with Parkes for the remainder of the 2½ hour moonwalk. From an analysis of the videotapes of the Extra Vehicular Activity (EVA) and of a recording of the NASA NET 2 communications loop (which controlled the TV reception), the timings for the TV switches are shown below.
Time (mm:ss) Video Transmission
00:00 TV on (upside down) Picture is from Goldstone (GDS). Time is 02:54:00 (GMT)
00:27 Picture is inverted and is now the right way up. Very dark, high contrast image
01:39 Houston TV switches to Honeysuckle Creek (HSK)
02:20 Armstrong steps onto the Moon. The time is 02:56:20 (GMT)
04:42 Houston TV switches back to GDS. Picture is negative
05:36 Houston TV switches back to HSK
06:49 Houston TV switched back to GDS. Picture is positive again but still dark
08:51 Houston TV switches to Parkes (PKS). Remains with Parkes for the remainder of the 2½ hour lunar EVA
From these timings, and other evidence, it is clear that at the start of the EVA, Goldstone was experiencing problems with its TV, resulting in high contrast, dark images. The Honeysuckle Creek pictures were better but they suffered from a lower signal- to-noise ratio, thus resulting in grainier images. The pictures from Parkes were the best of the three and it was these that NASA broadcast for the majority of the lunar EVA.
Television from the Moon
The Apollo Lunar Surface Camera was developed by Westinghouse and was a technological marvel of its time. The lunar module was power and bandwidth limited, so it was not possible to transmit commercial standard TV directly from the Moon. Instead, a slow-scan TV (SSTV) system was used that required less power and bandwidth. The SSTV system transmitted b/w pictures at 10 frames-per-second with only 320 lines-per-frame. In order to broadcast this to the watching world, it had to be scan-converted on Earth to commercial TV standards. An RCA scan-converter was used that operated on an optical conversion principle. It was a simple system that worked well on previous Apollo missions. Essentially, as each single SSTV frame was received on Earth, it was displayed on a small 10-inch b/w slowscan monitor. A Vidicon camera was pointed at the screen and imaged the frame at the standard commercial TV frame rate. It was the output of this camera that was broadcast to the world. In this way, a 30 frames-per-second, 525 lines-per-frame, TV picture was achieved. As you can imagine, it’s not an ideal method of scan-converting the pictures but it seemed adequate at the time.
The Goldstone TV was scan-converted on site and relayed directly to Houston via microwave relays and landline. The Honeysuckle Creek TV was scan-converted on site also, and relayed to the Overseas Telecommunications Commission (OTC) Paddington terminal in Sydney, referred to as ‘Sydney Video’. Meanwhile, the Parkes baseband signals were relayed to Sydney Video, where the TV was separated from the telemetry stream and scan-converted there.
At Sydney Video, a NASA controller would select the best of the Honeysuckle Creek or Parkes pictures, and pass that selection on to Houston. His selection would simultaneously be recorded on to 2-inch videotape on an Ampex VR660 recorder. The selected TV would be sent via microwave relays to the Moree Earth Station in northern NSW, then via the Intelsat III geostationary satellite to the United States and then finally along the AT&T landlines to Houston. At Houston, the controller would select the best of the Goldstone or Australian feeds for worldwide distribution. In a further twist, the Australian selection at Paddington was split and sent to the ABC Gore Hill studios for distribution to Australian networks. Consequently, the Australian TV did not have to travel via satellite to the US and back again. This meant that a transmission delay was not present, so Australian audiences watched the moonwalk 300 milliseconds before the rest of the world!
It is clear that scan-converting the SSTV and relaying it to the world was not an ideal situation. Firstly, the picture being displayed on the scan-converter monitor had to be adjusted manually. This was a subjective exercise, as the scan-converter operator had to adjust the brightness and contrast settings to what he thought produced the best looking picture. Unfortunately, the operator at Goldstone was inexperienced, and with the pressure of the moment, he got it wrong. At Sydney Video, the operator, Elmer Fredd, was vastly more experienced. He had helped design the scan-converter and knew it well. In December 1968, he had converted the TV pictures from Apollo 8 at Goldstone. It was no accident therefore, that the Parkes pictures looked the best. In addition, the slow-scan monitors in the scan-converters used high persistence phosphor screens so that the pictures could persist long enough for the Vidicon camera to image them. Unfortunately, a side effect of this was that the images, especially of bright, moving objects (like astronauts), persisted between frames, resulting in the ghosting of the images. Another problem was that the scan-conversion process, introduced additional signal noise and a lower resolution picture.
To make matters worse, relaying the signals via microwave relays, landlines and geostationary satellite added even more signal noise and transmission errors. The result of all these systematic problems was that the TV that the world saw was severely degraded and compromised. We could do much better today. As the video and telemetry downlink was being received at the stations, it was recorded onto 1-inch magnetic data tapes at a rate of 120 inches-per-second. These tapes had to be changed every 15 minutes for the entire duration of the moonwalk. Clearly, if we could find these tapes, we could replay them and recover the original SSTV pictures. With modern image processing techniques, we could enhance them even further and release them to the public.
The tape search begins
Soon after arriving at Parkes in 1996, I learned of a minor controversy about the exact time that the first TV from the Moon was received at Parkes. The Director of the Parkes Observatory at the time, John Bolton, had always insisted that he had received the TV signal from the very beginning when the camera was switched on at 12:54 PM (AEST).
The Moon was not scheduled to come into view at Parkes until 1:02 PM – a full eight minutes later, so there was some doubt. However, I soon learnt that there were two feeds installed in the focus cabin on the day. Realising that the moonwalk was imminent, Bolton was able to receive the signals with the less sensitive off-axis receiver. He carefully aligned the off-axis beam on the Moon and was able to track it until it reached the telescope’s 30-degree elevation horizon at 1:02 PM, after which he could track it normally with the main beam. My calculations showed that this was indeed possible, but I wanted to know for certain. Also, the signal being received by the off-axis feed would have been unstable and probably of a much lower quality, so I wanted to know by how much. I thought that if I could find the original data tapes that contained the signals recorded at Parkes, I could replay them and confirm my conclusions. At this time also, there was still some doubt about the sequence of switches in the broadcast of the TV, so by finding the tapes from the other stations, I could compare their picture quality with the existing video recordings and determine the sequence for certain. A bonus was that we could also recover the original SSTV, which I knew by then was of a much higher quality.
Beginning in the late 1990s I contacted various NASA centres requesting the whereabouts of the data tape recordings. I made countless phone calls, wrote emails and letters to whomever I thought might know where the tapes were located. But, it was all to no avail. No one seemed to know where the tapes were. In fact, many had trouble understanding what exactly I was after. I was convinced that the tapes must still exist somewhere, but where? In 2001 I obtained a Polaroid picture taken directly off a slow-scan monitor at Sydney Video. When compared to the existing scan-converted video image of the same scene, it clearly showed how much better the original SSTV was to the scan-converted videos. So, I persisted.
Also in 2001, the film The Dish premiered in the US and this prompted several past and present NASA personnel to contact me. Three in particular became good friends and search team members. Stan Lebar was the retired Westinghouse engineer who, in 1969, was the program manager for the Apollo Lunar Surface Camera. Dick Nafzger was the Goddard Space Flight Center (GSFC) engineer responsible for all ground systems hardware in support of Apollo TV in 1969, and was still with NASA. Bill Wood was a retired communications engineer who was based at Goldstone in 1969. The search team was completed when, in 2002, I was contacted by Colin Mackellar, who is an amateur historian and the webmaster of the Honeysuckle Creek website. He is a trained geologist and an Anglican minister in Sydney. Together, we joined forces to search for, and recover, the SSTV recordings.
A breakthrough occurred in 2002 when a former technician from Honeysuckle Creek contacted his former colleagues and Colin Mackellar. He admitted that, in 1969, he had made an unauthorised copy of a data tape that he believed contained telemetry from the Apollo 11 lunar EVA. This caused great excitement. The tape had been stored in his garage for 33 years in less than ideal conditions. If it still contained data, the possibility existed that the SSTV could be recovered from it.
Former Honeysuckle Creek personnel, Mike Dinn and John Saxon organised to have the tape transported to the Data Evaluation Lab (DEL) at the GSFC by the NASA representative in Australia, Neal Newman. The DEL contained the only machines in the world that could play and decode the Apollo data tapes. At the DEL, Dick Nafzger replayed the tape with his team. Unfortunately, they discovered that the tape only contained data from a 1967 simulation. The technician had copied the wrong tape. As heartbreaking as this was, it had a positive effect. People suddenly understood what we were after and why we were looking for it. We confirmed that the equipment to replay the data tapes still existed and, most importantly, that even after 34 years the tapes could still retain data.
In 2005, spurred on by this and by new Polaroids from Honeysuckle Creek, Stan and Dick visited the US National Archives in Washington, where all the data tapes from the Apollo era were deposited in the early 1970s – all 250,000 plus tapes. Unfortunately, their search only uncovered a single box of tapes containing Apollo 9 telemetry. The label on the box had details that allowed us to continue the search. Soon after this discovery, we received the alarming news that the DEL was slated for closure in 2006. This would be a disaster because, without the DEL, there would be no way to replay the tapes, and recover the SSTV, if they were ever found. Something had to be done.
The formal search
In February 2006 I visited the DEL and also gave a series of talks at various NASA centres to explain our search. On my return, I compiled a report which slowly began to stir people’s attention. Two months later in July, Stan and Dick were interviewed on national radio on the anniversary of the Apollo 11 mission.
Finally in early August, The Sydney Morning Herald posted a front-page story with the provocative headline ‘One giant blunder for mankind: how NASA lost moon pictures’. This caused a major stir with the story going viral on the internet and news reports appearing on the American TV networks and other news organisations worldwide. Interest became so intense that in August 2006 the NASA Administrator, Michael Griffin, formalised the search and appointed the GSFC deputy director, Dorothy Perkins, to head the search. Dick was the technical lead. The first decision made was to not close the DEL.
With the full resources of NASA brought to bear on our search, we were confident that we would now finally locate the tapes and release the SSTV to the public by Christmas. But it was not to be. Soon after the formal search began, documents were found that suggested that the tapes may have been erased in the early 1980s. This was disturbing news. We were searching for just 45 tapes from over 250,000 tapes of the Apollo era. Surely, these few would have been put aside for historical reasons. Meanwhile, Colin and I followed up leads from the Australian end and provided advice. In the US, our colleagues Stan, Dick and Bill became first-class sleuths. They tracked down long retired personnel and uncovered dusty documents from NASA archives, people’s attics and basements.
Slowly and surely, the evidence mounted. We discovered that in the late 1970s and early 1980s NASA had withdrawn all the Apollo era data tapes from the National Archives and erased and recertified them for later use. But why? Apparently, these tapes were manufactured using whale oil to adhere the oxide to the backing. However, in the mid-1970s, the use of whale oil was banned and manufacturers switched to using synthetic oils. The drawback was that if the synthetic oil-based tapes were not stored correctly, they would absorb moisture from the air which made them sticky. Played back at high speed, they would stick to the recording heads and be shredded to pieces. The older Apollo era tapes didn’t suffer from this drawback.
As NASA’s budget was cut back severely in the late 1970s, the need for more tapes to record the increasing volume of data from satellite programs became acute. The enormous number of tapes in the National Archives was now seen as valuable assets. Over a period of several years, they were all removed, erased and recertified. The labels on the tape canisters were cryptic and there was little way of knowing what each of the tapes contained. Our team didn’t find any evidence that the tapes containing the Apollo 11 lunar EVA data were treated differently to the others. We reluctantly concluded that the tapes were, in all likelihood, erased and reused with the rest.
You can imagine how we felt. To understand why the tapes were treated this way, it’s important to realise that they were never intended to be the primary archival media. In fact, there was never any expectation that the magnetic data would survive more than a few decades. They were only meant to act as backups for the real-time communications relays and other data. If there was a failure during a mission, the tapes could be used to recover the information. If however, all went well, then the tapes were no longer necessary. All the vital information was extracted in real-time and archived for analysis at the relevant NASA centres. The TV was successfully seen by the world and the scan-converted video was properly recorded onto archival b/w film that would last for centuries. Few people outside of the tracking stations were even aware of the SSTV or how much better it was. As far as everyone was concerned, all the data was believed to be properly archived – at least until we came along.
The NASA report HERE
What to do next? In late 2006 Colin noticed a video clip on Eric Jones’ Apollo Lunar Surface Journal website. It showed Armstrong descending the lunar module ladder that was much clearer than anything we’d seen before. We learnt that the clip was sourced from someone who had previously worked at the GSFC. It appears that he found an old 2-inch videotape of the lunar EVA and made a crude VHS video copy of it. We obtained a copy of this videotape and found that it was most likely a copy of the video recording made at Sydney Video of the Australian selection.
It contained the clearest pictures of Armstrong descending the ladder sourced from Honeysuckle. It also showed the switch to Parkes earlier than in any other known recording. Unfortunately, when the original copy was made, the Ampex recorder was not setup properly and this produced a jittery image with many defects. We spent the next few months searching for the original 2-inch tape, but it has mysteriously gone missing. Early in the search Colin was contacted by Ed von Renouard, the former scan-converter operator from Honeysuckle. On the day of the lunar EVA, Ed had brought his home movie camera to work and recorded footage directly off the screens of his console. One of those scenes was the dumping of the astronauts’ portable life support systems, or backpacks. This occurred several hours after the astronauts had re-entered the lunar module and the TV networks had by then ended their broadcasts. Consequently, as far as we could determine, no other footage existed of the dumping. During the search, we came across many archived copies of the scan-converted TV. We decided to switch our search to finding the best of these scan-converted videos and have them archived properly. We also decided to digitise them along with the Sydney Video and Honeysuckle footage. We would take the best parts of each and compile and restore them into a single video of the lunar EVA.
In 2008 we had a demo restoration produced of selected scenes, which we used to convince NASA to underwrite the $245,000 cost of the full restoration. A week later, Neil Armstrong visited Sydney to address the CPA Australia 125th anniversary celebrations. During his address, Neil Armstrong paid a glowing tribute to the many Australians who worked at the tracking stations and helped to ensure the success of the Apollo 11 mission. Some were present in the audience and were individually acknowledged by him. In a brief ceremony following the event, Armstrong symbolically handed over the Australian disks to Dr Phil Diamond, the then-Director of CSIRO Astronomy and Space Science (CASS) – the custodian of the disks in Australia. He noted that ‘”the restored video is a valuable contribution to space exploration and space communication history”.
This ceremony effectively brought the restoration effort to a close. The Australian disks will eventually be deposited in permanent archival storage, most likely with the National Film and Sound Archive in Canberra. The restored Apollo 11 video can now be purchased online from www.apollo11video.com
The proceeds will go toward the continued search and restoration of the other Apollo mission videos.
In early September 2006, soon after we first received news that the tapes may have been erased, I received a phone call from Peter Robertson, the editor of Australian Physics magazine. He had seen the news items regarding the missing Apollo 11 tapes. He phoned to tell me of a letter he had received from John Bolton in the early 1990s. Bolton had mentioned some videotape players that were in the Parkes control room during the Apollo 11 mission. I informed Peter, that we weren’t looking for videotapes but rather magnetic data tapes containing telemetry of the mission. I asked him to send me a copy of the letter anyway.
For many years, I had photographs from the CASS Photo Archive of scenes taken inside the Parkes control room during Apollo 11. Several photos showed a man standing beside Ampex VR660 2-inch videotape players. The Ampex players could only record standard television pictures, so I had no idea what they were doing at Parkes. I also didn’t know who the man standing beside them was, or what he was doing there.
A few days after Peter phoned, the Bolton letter arrived and I was stunned. The letter did indeed describe the Ampex video recorders and, more importantly, Bolton mentioned that they came with their own engineer from Johns Hopkins University in Baltimore. Could this engineer be the mystery man? I knew that Johns Hopkins was the home of the Applied Physics Laboratory (APL), a regular NASA contractor.
In late November 2006, we received definitive evidence that the tapes had been erased. It was then that I sent the information on the possible identity of the engineer to my US colleagues. They immediately set out to find him. Within a few weeks, they found old newsletters from APL that positively identified him. He was contacted and interviewed by Bill and Stan. What he told them lifted our spirits. According to the engineer, in April 1969, the APL was contracted by the GSFC to modify existing Ampex VR660 video recorders to record the non-standard SSTV at Parkes. He was put in charge of this crash program. It was to be an experimental backup recording in case the TV could not be relayed to Houston. This secondary recording was only made at Parkes and if it worked, it could be used on future missions. He reported that the recording succeeded and that he returned to the US with two reels of 2-inch videotape containing the SSTV.
The whereabouts of this videotape was now a mystery. An extensive search was conducted at APL that turned up two tapes that seemed to match the description. Dick organised the loan of an Ampex VR660 video player and a slow-scan monitor from two museums. His team played back the tapes at DEL and found that they were all blank. Again, we were disappointed. Importantly, there was no documentation to suggest the tapes were erased or destroyed. We are working on the assumption that they still exist somewhere, so our search for them continues.
The most striking thing for me was how, just as we were at our lowest ebb, John Bolton appeared, from beyond the grave, to direct us in our search. It was like he was saying, “Hey, look over there. That’s where you’ll find what you’re looking for.” Hope remains.
More information on the Parkes Apollo 11 support and the search for the tapes can be found here:
This is the official NASA search report release in 2009:
This is the page setup in 2009 to publicise the Parkes Apollo 11 40th Anniversary:
This is the site for purchasing the Apollo 11 restored video DVD:
I wish to express my gratitude to Professor Marcus Price, officer-in-charge of the Parkes Observatory in 1997, for asking me to research the Observatory’s support of the Apollo 11 mission, and to Dr John Reynolds, officer-in-charge from 1999–2008, for his continued support throughout. I also thank Marshall Cloyd for giving me the opportunity to search for the tapes a little closer to the source in the United States. Finally, to my friends Bill, Dick, Colin and Stan – thank you.
Bareskin Dogfish: I have an affinity with this dogfish. Little is known about how it works or the environment it inhabits. It is actually a shark and has so far only been found near Japan, along the Australian coast from about Brisbane to Hobart and in a relatively small area from Perth to the north.
Apparently they are dark in color with white-tipped fins, which suggest the pictured specimen above is either an albino or just a very crook sample.
According to what I could find out about them they have no anal fin (who would want one) and has grooved dorsal spines with the second larger than the first. It has a blunt nose, large eyes and large nostrils. It grows to a a maximum of about 45cm.
They are found in a depth range of 500m to 1200m.
It has litters of three to 22 pups.
And that is about where the information on this thing ends: No information on the reproductive cycle, no information on annual fecundity, gestation period, age at maturity or longevity.
From ugly ducklings like the Rough Dreamer to the kiss-me-I’m-really-a-prince Clown Triggerfish, Australia’s marine fishes are now at your fingertips thanks to FishMap.
FishMap is a free online mapping tool that anyone can use to find out which fishes occur at any location or depth in the waters of Australia’s continental shelf and slope. You can create species lists for any region that include photographs and illustrations, distribution maps and current scientific and common names.
FishMap has a million and one uses for everyday fish lovers, such as finding out which fishes occur at your local fishing spot, creating a personalised pictorial guide or identifying the fish you spotted during a dive. Researchers can examine the range of a threatened species, or figure out what occurs in a marine reserve. Commercial fishers can find out what fishes occur at different depths in the areas they fish, or even determine the possible species composition for catches of any fishery in the waters of Australia’s continental shelf and slope.
Australia’s marine biodiversity is among the richest in world, but before FishMap there was no easy way to generate illustrated species lists for any location you choose within Australia’s marine waters. It’s the only resource of its kind in the world that covers virtually all species of fish found in the marine waters of an entire continent.
The tool provides the scientifically known geographical and depth ranges of over 4500 Australian marine fishes – including our 320 sharks and rays. Searches reveal illustrated lists of fishes by area, depth, family or ecosystem. These lists can be printed to create simple guides or, if you really want to get serious about it, data can be downloaded into a spreadsheet for research.
FishMap is built on the Atlas of Living Australia’s open infrastructure, which is bringing Australia’s plants, animals and fungi from Australia’s biological collections to everyone.
The Atlas of Living Australia is an initiative of Australia’s museums, herbaria and other biological collections and is supported by the Australian Government through the National Collaborative Research Infrastructure Strategy, the Super Science Initiative and the Collaborative Research Infrastructure Scheme.
FishMap will be officially launched on Tuesday 26 February 2013 and is available on the Atlas of Living Australia website: http://fish.ala.org.au
Media: Bryony Bennett. Ph: +61 3 6232 5261 MB: 0438 175 268 E: firstname.lastname@example.org
Sturgeon Whiptail: I was kicking back watching one of those fishing shows on TV the other day and they were somewhere in Canada catching sturgeon – and they were huge.
Think sturgeon. Think caviar.
So, does Australia have any of these? Nup. We have this thing above, but I have got to say they are a huge disappointment. Yeah I know – all creatures great and small – but this Whiptail just doesn’t cut it. They are actually part of the grenadier family and seem to be cashing in on the sturgeon name.
They grown to a maximum length of about 20cm and are found in depths of between 400m and 1300m off the northern Australian coast.
That’s about it – they are small and ugly.
The REAL sturgeons are bottom-feeders and are usually found in river deltas and estuaries. Some are entirely freshwater and a few venture into the open sea beyond near coastal areas. Several species of sturgeons are harvested for their roe, which is made into caviar.
Sturgeons appeared in the fossil record about 200 million years ago, around the very end of the Triassic, making them among the most ancient of actinopterygian fishes. True sturgeons appear in the fossil record during the Upper Cretaceous.
They are slow growing and can live to 100+ years and can grow to over 5m in length. They are partially covered with bony plates called scutes rather than scales. They also have four barbels – the feelers in front of their mouths – which don’t have any teeth. These are used to drag along the bottom to help them find food and navigate.
Now, THIS is a sturgeon!
By Ken Taylor, Research Scientist, CSIRO ICT Centre
If you’ve ever watched a professional bike race such as the Tour de France on TV, you might have thought to yourself: “Just how good are the professionals?” And if you do a bit of cycling yourself, you might be inclined to wonder: “How much better are they than me?”
Using data from the 2013 Tour Down Under – held in late January in and around Adelaide – I was able to compare the efforts of amateur recreational cyclists against those of professionals in the race.
Of the 6,500 cyclists that took part in the recreational event, 950 recorded their ride using the popular “social fitness” website Strava. I was then able to analyse this wealth of shared data to compare the efforts of amateur cyclists with the efforts of professional rider Serge Pauwels from the Omega Pharma-Quickstep team.
While German sprinter Andre Greipel won that Tour Down Under stage at the head of the peloton, Pauwels finished 42nd as part of the same group. This meant that Pauwels’s time was considered equal to that of Greipel’s.
As Pauwels remained in the peloton all day, riding conservatively, his effort represents the minimum needed to ride with the pros on a fast stage that averaged 41.5km/h.
So how did the non-pro riders perform over the same course?
While there could be a difference in the effort put in by pros and amateurs – for a start, the pros were racing and the public were not – many riders seem to have been giving it their best, particularly the faster amateurs.
The amateur riders also had to be motivated enough to turn up and choose the full 127km of Stage 4 rather than one of the shorter alternatives available on the day. This would suggest that the riders in question are all reasonably strong.
(If you didn’t ride in the Bupa Challenge you can get a rough idea of how you would have gone by comparing your average speed over a long ride to that of the amateur field below. You’d have to be able to average a punishing 26km/h including rest stops to make the top half of the amateur field in the Bupa Challenge Tour.)
The image above shows that Pauwels and the rest of the riders in the pro peloton were 4.4 standard deviations faster than the mean of everyone else and a full 5.7km/h faster than the quickest amateur.
How did they do it?
Well the obvious answer would be “they pedalled harder” but as it turns out, for the best of the amateurs, this isn’t the case.
A cyclist generates power to propel the bike forward, and this is measured by multiplying the force they exert on the pedals by how fast the pedals are rotating. Power is lost to air drag, rolling resistance and fighting gravity as they climb hills.
The heavier the cyclist, the higher the power they should be able to produce. As such, Serge Pauwels’s weight of 64kg makes his average of 223W more impressive than if he’d been, say, 80kg.
A cyclist can produce high power for short intervals but this will leave them tired. Each cyclist has a maximum amount of power they can produce over any particular interval. These best efforts can be shown in a curve compiled from their highest power over multiple efforts.
The image below compares Pauwels’s previously established best-effort power curve (dashed blue line) against his power curve for stage 4 (dashed red line) and the power curves of the four fastest amateurs (as per Strava) that had power meters during the Bupa Challenge Tour.
This image shows that Pauwels rode at his long-distance best but fairly conservatively – that is, he was well below his best over shorter intervals.
This conservative riding would have helped Pauwels stay fresh enough to achieve strong results in later stages of the six-stage tour. In turn, these strong results allowed him to finish the Tour Down Under in 20th place overall.
Three of the amateurs produced a higher average power than Pauwels, including one who recorded 243W – nearly 10% more than Pauwels’s 223W.
And one of the amateurs, “Spartacus Flying Scotsman”, was able to ride more conservatively (i.e producing less power in short intervals – see figure 3 above) while producing more power overall.
But Pauwels was more efficient, riding at a higher average speed from a lower average power than all of the amateurs.
Just how efficiently Pauwels rode can be seen by plotting speed against power, for all riders who uploaded power meter data to Strava (as seen in figure 4 below). Only 28 of the 950 riders used power meters and of these four were identified as unreliable and excluded.
The power required to overcome air drag is proportional to a rider’s velocity cubed (i.e. the drag increases dramatically the faster you go). And yet the power vs speed relationship for the amateurs is approximately linear.
This is unexpected, but because Pauwels is well below the trend, it emphasises just how efficiently he rode.
So, to keep up with the pros, the average Bupa Challenge rider needs to produce an additional 50W – an increase of a little more than a third – and ride much more efficiently to increase their speed by more than 50%.
And for the rest of us, matching the pros is an even more difficult task – most probably couldn’t ride 127km at any speed.
Ken Taylor has previously conducted cycling research funded through a CSIRO and AIS partnership. See http://www.csiro.au/en/Organisation-Structure/Divisions/Materials-Science–Engineering/CSIRO-and-AIS.aspx .
He works for CSIRO.
OK, this is not the most pleasant FFT picture we have had but it is interesting.
One of our regular FFT readers (and the winner of the inagural FFT identifcation quiz) Phillip Clark from Focus Fisheries in WA sent the pictures in. Phillip is a member of a fishing club and another member found the specimen on the flats of the Swan River in Perth.
Apparently there was a bit of debate among other members of the club as to what exactly had been found. There was an even split between those who thought it was an eel and those who had no idea. Finding the fish in the Swan River threw a few off them of track.
While we are not encouraging all and sundry to send in their pictures of fish they have found, I thought this one was strange enough to send on to our fish ID experts in Hobart.
John Pogonoski who works in fish taxonomy at CSIRO came up with the answer – “It’s Woodward’s Moray Eel, Gymnothorax woodwardi – described by McCulloch in 1912 – a common species in south-western WA (from about Cape Leeuwin north to about Shark Bay, inshore to at least 250m). I saw plenty of preserved specimens in the Western Australian Museum last year, so must be reasonably common.”
There you have it.
Ice cores drilled in the Greenland ice sheet, recounting the history of the last great warming period more than 120,000 years ago, are giving scientists their clearest insight to a world that was warmer than today.
In a paper published today in the journal Nature, scientists have used a 2540 metre long Greenland ice core to reach back to the Eemian period 115-130 thousand years ago and reconstruct the Greenland temperature and ice sheet extent back through the last interglacial. This period is likely to be comparable in several ways to climatic conditions in the future, especially the mean global surface temperature, but without anthropogenic or human influence on the atmospheric composition.
The Eemian period is referred to as the last interglacial, when warm temperatures continued for several thousand years due mainly to the earth’s orbit allowing more energy to be received from the sun. The world today is considered to be in an interglacial period and that has lasted 11,000 years, and called the Holocene.
“The ice is an archive of past climate and analysis of the core is giving us pointers to the future when the world is likely to be warmer,” said CSIRO’s Dr Mauro Rubino, the Australian scientist working with the North Greenland Eemian ice core research project.
Dr Rubino said the Greenland ice sheet is presently losing mass more quickly than the Antarctic ice sheet. Of particular interest is the extent of the Greenland continental ice sheet at the time of the last interglacial and its contribution to global sea level.
Deciphering the ice core archive proved especially difficult for ice layers formed during the last interglacial because, being close to bedrock, the pressure and friction due to ice movement impacted and re-arranged the ice layering. These deep layers were “re-assembled” in their original formation using careful analysis, particularly of concentrations of trace gases that tie the dating to the more reliable Antarctic ice core records.
Using dating techniques and analysing the water stable isotopes, the scientists estimated the warmest Greenland surface temperatures during the interglacial period about 130,000 years ago were 8±4oC degrees warmer than the average of the past 1000 years.
At the same time, the thickness of the Greenland ice sheet decreased by 400±250 metres.
“The findings show a modest response of the Greenland ice sheet to the significant warming in the early Eemian and lead to the deduction that Antarctica must have contributed significantly to the six metre higher Eemian sea levels,” Dr Rubino said.
Additionally, ice core data at the drilling site reveal frequent melt of the ice sheet surface during the Eemian period.
“During the exceptional heat over Greenland in July 2012 melt layers formed at the site. With additional warming, surface melt might become more common in the future,” the authors said.
The paper is the culmination of several years work by organisations across more than 14 nations.
Dr Rubino said the research results provide new benchmarks for climate and ice sheet scenarios used by scientists in projecting future climate influences.
Media: Craig Macaulay. Ph: +61 3 6232 5219 E: email@example.com