Posts Tagged ‘ISS’

By Tobias Lindemann, © Copyright 2011, All Rights Reserved.

Introduction

I was not happy when Atlantis lifted off last Friday, because I thought we would not have a chance to see it here in Europe. I was relieved when a friend told me that there would be a Solar-Transit of the ISS (International Space Station) near our home in Munich, Germany. The day after the launch, I read that the Shuttle Atlantis docked with the ISS, so I knew I had a chance to get the ISS and Shuttle together in a picture.

To verify the possibility, I went to www.calsky.com which is a nice site where you can calculate where the ISS will pass, as well as moon and solar transits for your location. Even if there is a flyby that is close to the sun, this site tells you where to go to see a perfect crossing. I was happy to learn that I could go to a place that is only a stone’s throw from my house.

I don’t own a mobile telescope, so I took my 300mm telephoto lens, a solar filter I built years ago for a solar-eclipse, and my EOS to the observation site. But before I left I had to synchronize the clock of my camera to match an exact radio clock.  Calsky had calculated the exact time for the crossing at 14h 56min 18.2sec UTC, and the whole transit duration was only 0.89 seconds which is fast.  I arrived at the observation location at 14:40 UTC, so I had enough time to find the sun, focus the lens and set the correct exposure time (I felt the best exposure time was 1/6000 at ISO 100 and f/9 with my filter).

IMPORTANT! Regarding the correct filter, it is extremely important that you do not look at the sun even though a small photo lens without a filter. Direct sunlight can seriously damage your eyes!!!

I choose JPEG as the image format because I can take many more photos in this format in burst-mode than taking raw format images.

A few minutes later, the key moment approached and I started the photo shot. I didn’t look at the sun through the finder, but after one minute of exposing the image I decided that the crossing must be over and released the trigger. I went home and transferred the photos to my computer and was very exited to see there were pictures of the sun, with something in front of it. I had about 800 photos to look at, but I realized that I had adjusted the time of my camera with a radio clock, so every photo has a very exact time stamp. It was unbelievable, but there were some pictures with the ISS in front of the sun at the exact time of 14:56:18. Thank you calsky.com; that is what I call that accurate.

The only tasks I had left was to stack the images with Fitswork using the “minimum function”, so that the dark ISS looks better plus reduce the intensity of the sun in the consolidated photo. Here is my photo from that event:

Even when a telephoto lens lacks high magnification, you can see the modules and solar panels of the ISS. Normal ISS passes occur in the evenings and mornings, and I do photograph very often at either time, but this was the first time I took some photos of the ISS in front of the sun, which was very exciting.

– Tobias <TobiasLindemann@iss-tracking.de>

Editor’s Comment

Tobias does astro-photography and shares his photos with fellow astronomy enthusiasts. He recently took a beautiful image of the ISS transitioning across the sun and I saw it when he shared it with members of the ISS Tracking Yahoo User Group. I was impressed enough to ask Tobias to write a short article about it for the readers of this site and he was happy to comply. Thank you for sharing, Tobias.

– Mike

By Mike Hubbartt, © Copyright 2011, All Rights Reserved.

The Russian Mir and US Skylab space stations were the first space stations used for research done away from the confines of gravity. The news, newspapers and magazine articles of that era showed a bit of what the astronauts saw in orbit, and while the quality of images was generally lacking, they were better than nothing.

Now we have the International Space Station (ISS), which is a near earth orbit (~ 250 miles above earth) space station constructed from components built by the US, Russia, Japan, and Canada over the past 10 years. The first mission to construct the ISS was launched on October 31, 2000, and the ISS is still being updated today. The next major component for the ISS is a tool to help in the search for dark matter, which is scheduled for the last scheduled flight of the space shuttle Discovery in 2011. Modern satellite and cable companies carry the NASA channel, which has live and prerecorded feeds from the space station, and the quality of this material is impressive.

A couple of days ago I looked at the ISS in Starry Night Pro (SNP) 6 and the station was on the far side of the planet away from the sun, so I couldn’t see many details of the station. I left the software running and 15 minutes later the station had returned to the sunny side of earth (makes sense as the ISS makes 18 orbits around the earth every day), so I could easily see the station as well as earth below it. The image below is how the station would appear to a visiting vessel.

By the way, so far there have been 67 Russian, 34 shuttles, 1 European, and 1 Japanese vehicles that have visited the ISS. In the screen shot above, you see the earth revolving under ISS. I like how the station goes from visible to barely seen when it leaves the sun-side of earth. This is a nice way to show students learning astronomy how our planet looks from earth orbit. As they say, a picture is worth a thousand words.

Tip: If you want to know the position of the ISS at any time so you can look at it with a telescope or binoculars, SNP has that data. Select the ISS, then select the Info tab and look at ‘Position in the Sky’ to get current position :

I looked at the ISS information in SNP and it is good, but the software also allows user to access online information about the space station from within SNP. I selected the Online Info option for the ISS, which launched Safari and took me to a page in Wikipedia. Now this choice of information surprised me, because most of my undergrad classes expressly forbid us the use Wikipedia as a source for any project or paper. I’m not knocking Wikipedia, but I’ve heard more than a few college professors express mistrust of the accuracy of some of the information.

In a future update of SNP, I’d like to have the ability to add my own links for external information, because NASA’s excellent site and Wolfram|Alpha have a ton of good information on the ISS – size, weight, missions, people that visit, – and NASA’s site also has a lot of good videos and still images, as well as blog entries and tweets by astronauts on the ISS. I’d also like to be able to jump directly to JPL’s and MIT’s sites that have ISS- and space-related content from within Starry Night.

Speaking of NASA’s site, if you’re interested in the space station, you can have a calendar with beautiful color images of the ISS. NASA has one available – click here to download the 2011 ISS calendar.

Click here for Wolfram|Alpha data on the ISS (as well as other astronomy information), including the current position of the ISS.

by Mike Hubbartt, Copyright 2010, All Rights Reserved.

The recent failure of one of two ammonia cooling pumps for the International Space Station is being addressed by a series of three space walks. Tracy Caldwell Dyson and Doug Wheelock were the astronauts that performed the first space walk last Saturday, which lasted over 8 hours. The second space walk is scheduled to begin at 6:55AM Wednesday 8/10, and the third space walk is scheduled no earlier than Sunday 8/14.

For more information, see click here.

By Mike Hubbartt, © Copyright 2010, All Rights Reserved.

The latest manned flight to the International Space Station (ISS) launched Tuesday at 5:35 PM from Kazakhstan, and the spacecraft is expected to dock with the ISS Zvezda service module tonight. The three person Expedition 24 crew aboard the TMA-19 spacecraft includes Doug Wheelock, Shannon Walker, and Fyodor Yurchikhin. For more information, click here.

A brief reminder, there is just one more ISS visit scheduled for a shuttle, so reliance on cooperation with Soviet and private industry spacecraft will be the way crews and supplies for the ISS are exchanged.

There are environmental issues that affect space, such as the number and types of satellites in orbit, the International Space Station, and commercial space vessels like SpaceShipTwo/WhiteKnightTwo and Falcon 9/Dragon.

On June 4, 2010, SpaceX successfully launched their Falcon 9 spacecraft and it reached low earth orbit while carrying a test version of their Dragon spacecraft. Dragon caries the payload of people, pressurized cargo, and unpressurized cargo. The Falcon/Dragon spacecraft is scheduled to begin providing transport of people and supplies to the International Space Station starting in 2012 at a substantially lower cost than using the space shuttle.

To see a QT video of the simulated rendezvous of the Dragon and ISS, click here.

To see the company website of SpaceX (Space Exploration Technologies), go here.

Now this is exciting, as this could be the way regular citizens get to go into space.

Question: How much do you think this will affect the jobs of current NASA and satellite companies that produce technology for the aerospace industry?