Quote:
Originally Posted by Terry B
Only light capture matters hence a big scope will image dimmer stars than a little scope.
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Hi There
as stated, yes i know about the field changing size, and TBH i didnt want to be rude at all the replies, but i kinda had a rough idea about all that to, but what i asked hasnt really been tackled by any reply, so i will try to explain it more simply
say i am taking an image of the Eta Carina. Ragardless of image size, or any of that, i have 2 telescopes an 80mm refractor at F7.5 and a 200mm reflector at around F5. now then,
purely based on telescope aperture and the telescopes light gathering power what would be the eqivelant exposure time for an image of equal brightness? thats equal brightness, not detail captured, or area captured, or size of image.
hope that explains it.
