Author Topic: And another one from Petts Wood - The Tadpoles in Auriga - IC410 - HaRGB  (Read 43 times)

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Roberto

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Same setup as per the Jellyfish's mosaic, completed as a stand-in object whilst the former climbed up into the sky.

Details here:  https://www.astrobin.com/pvlkk6/E/?nc=user

Roberto


Carole

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Looks really nice Roberto, I sometimes do the same and sometimes the "while I am waiting" image turns out to be better than the one I was waiting for. 

I hesitate to say as "I am one to talk", but on zooming in - is there a small degree of coma in the corner stars?

Carole

Roberto

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Hi Carole

Thanks; yes, there is some under (or over?) correction in the corners from the reducer/flattener.  This is a large chip and usually those stars get compensated and rounded by meridian flips averaging the elongation.  In this case, IC410 was always past the meridian when I was imaging so the effect is more obvious (stacked up consistently).   I could agonise and try to get the correction 100% but I'd rather shoot and crop than spend my time down that rabbit hole!   :lol:

Roberto

Carole

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I could agonise and try to get the correction 100% but I'd rather shoot and crop than spend my time down that rabbit hole!   :lol:
I agree, I only just got my coma "almost" sorted out about nearly 10 years of imaging.

Carole