Thursday, March 02, 2006

Another clear sky!

I had an ISS track forecast for 18:47 tonight from the WSW. So, set up the camera early but noticed the thin crescent moon that I'd missed last night was on show with a nice amount of earth shine lighting the shadow. So took a few heavily bracketted shots of this first.

Then back to the ISS, sure enough it showed right on time, the following images are variations of my second attempt to capture it on "film". This shot was made with a Canon EOS350D using a 35mm SLR equivalent focal length of 28mm, exposure was 24 seconds at f8.0, speed 800 ISO.

Only had chance for one shot, problem is that the stars etc are so faint through the viewfinder, so didn't start the exposure as soon as I could and I wasn't sure if the ISS was out of view. Next time I will try to get more shots in. The photo above is "as is" from the camera.

This version is after adjust levels in photoshop, interesting that you can now see the atmosphere in daylight. The ISS is the long streak crossing Orion. Below is the forecast plot for this pass from heavens-above, I'd say the prediction couldn't have been better!

The predicted track of the ISS is shown by the solid line running right to left with a red arrow near its' beginning. Below is an inverted version of the final image as a comparison to the chart.

This is a cropped version of the same shot, must try to get some observing done while I have the chance.

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