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Old 25-01-2025, 10:58 AM
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gregbradley
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gregbradley is offline
 
Join Date: Feb 2006
Location: Sydney
Posts: 18,185
Quote:
Originally Posted by alpal View Post
Thanks Greg,
it seems you definitely know what you're doing
and you're getting top results.

cheers
Allan
Thanks Allan.

Quote:
Originally Posted by PRejto View Post
Hi Greg,

Not to argue a point too much, but from what (little) I know about CMOS cameras (my Player One Poseidon is quite new) there are more than a few guys over at CloudyNights that say the flat-darks are quite unnecessary with the newer CMOS cameras and that just taking flats in the normal way (just subtracting bias) will work just fine. I've done it both ways with my camera and so far I cannot see any difference.

Peter
It would suit those who use illuminated discs for making flats as then you can control the exposure length to just one length rather than it shifting with dusk flats.

It's a bit of a trial and error approach as to what works and what doesn't.

Quote:
Originally Posted by Startrek View Post
Greg,
I forgot to ask before and just out of interest, what camera are you using and what temp and Gain/offset settings ?
Thanks

Martin
Hi Martin, it's a QHY600mm and read mode 0 with gain of 26 and offset of 40. Ideally I would use 56 50 for narrowband but it starts to get too complicated as it requires its own set of darks etc.

Last edited by gregbradley; 25-01-2025 at 07:31 PM.
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