Processing M33. Help!

[ollypenrice]

4 hours ago, Scooot said:

“There is no need for bias with a CMOS camera and you do need to take darks for flats (AKA flat darks) matched to your flats.”

Hi Olly, is that the case with a DSLR or are you just referring to dedicated Astro CMOS cameras.?

I wondered about this but Tony Hallas recommends bias and dither for DSLRs rather than darks. I know little about DSLR imaging I'm afraid.

Olly

[gorann]

The latest generation of cooled CMOS, at least my ASI2600 (and most likely also the 6200), have no need for darks in my opinion. There is no amp glow (which I do have in my ASI071 and 1600) and the darks I have taken with the ASI2600 are just that, dark, so I feel they contribute nothing (except possibly noise).

Edited October 7, 2020 by gorann

[2STAR]

On 01/10/2020 at 13:35, alacant said:

Hi

Lovely shot.

I think that with correctly matched dark and flat frames and with each channel containing only one set of data -R contains only R etc.-  you'd be able to process the whole of the frame without having to spend time correcting in software. Also best to keep the camera attached at the same angle, thus avoiding edge artefacts which have to be cropped.

 

 

 

 

 

 

 

 

 

 

 

 

Here's an in-your-face-shouldn't-be-here lrgb thrash in Siril. You got some great detail:)

Re:  Camera attached at the same angle !,  can you expand on this please as I have had this issue.

regards eric