First ISS Solar Transit
Taken by Giuseppe Petricca on July 4, 2015 @
La Spezia, Liguria, Italy
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Camera Used: Unavailable Unavailable
Exposure Time: Unavailable
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Date Taken: 2015:07:04 14:22:20
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Details:
This morning the alarm woke me up early, at around 6 o'clock am CEST local time because I had to move from Pisa (my college location) to La Spezia, an hour and a half by train from here. Why? Because I wanted to capture my first ever ISS solar transit, and the sunny day was just inviting me to try.
Seeing was not so good, but I'm surely satisfied and amazed, since this is my first result!
The principal problem I had to solve was the time. A transit of the ISS in front of the Sun or the Moon lasts around a single second, and since I was only with my reflex camera and a 500mm catadrioptic telephoto lens I could not do a movie (due to the little resulting dimension of our star disk) and I had to go with my 'burst shot' of 10 frames at 1/2000" exp, ISO 800, f6.3. But in some of them, the International Space Station was there, and its silhouette is unmistakable!
I could not position myself in the middle of the transit line since this one fell just in the middle of the La Spezia gulf, so I chose a compromise position using calsky and google maps and used the online atomic time of NIST to give me the 'GO' for the burst shot sequence.
Instrumentation used: Canon EOS 700D with Samyang 500mm f6.3 Telephoto Lens - Astrosolar Filter - stack of 25 images on 100 for the background Sun. with AutoStakkert2, elaborated with Registax and Photoshop CC.
Photographer's website:
http://www.astrobin.com/users/gmrphotographer/
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