Quote:
Originally Posted by Placidus
Chris, that's stunning great wonderful! But you have to tell us some of the technical details. What focal length? What field width?
In my ignorance, I'd always thought that 11th mag proxima was "near" alpha on the sky, and I wondered why your shot was not flooded with light from alpha, but it seems it's something like two degrees away.
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Thanks all for the comments.
The three images were taken using a Nikon D7100 on an M14 SCT, fl = 3556 mm. The field of view is approximately 22 x 15 arc minutes. Each image is a single exposure, and from memory the first two years were 60 secs each, and this year's was 30 secs.
Registration and conversion to jpeg format was done in PixInsight, and I used GIFmaker.me to create the animation.
Prox Cent is located approx half way between Alpha Centaurus and Alpha Circinus.
I might have a crack later at estimating apparent speed, but I don't think I (or any of you for that matter) will live long enough to see the curve of its orbit.
Cheers, Chris