PixInsight Forum (historical)

PixInsight => Tutorials and Processing Examples => Topic started by: DB on 2011 March 19 19:31:33

Title: Sequence sequence one shot color camera
Post by: DB on 2011 March 19 19:31:33

I have followed Harry's advice with a SBIG XCM2000 one shot color camera:

>>
Yes it should be
1) Dark /flat application
2) debayer
3) Alignment
4) Image integration

There is also a Batch debayer tool under scripts , also there is the new script to do all this in one go
>>
This worked fine - thanks again Harry!

The resulting RGB image of M83 is completely grey. Have i missed something in the processing to obtain color in the image or is that just it for M83 without filter wheels to pick up difference emission spectra?

Thanks.

Title: Re: Sequence sequence one shot color camera
Post by: Nocturnal on 2011 March 19 19:47:14

Hi,

there's a difference between an image that looks gray and one that really is. What does the histogram look like? If you see 3 separate lines/hills and they're not exactly the same then you have a color image. Processing will bring out the color.

Title: Re: Sequence sequence one shot color camera
Post by: DB on 2011 March 21 01:42:00

Hi Sander

There are three separate peaks with a slight difference between them.  What steps after a histogram stretch is needed to bring the image out?

regards

David

Title: Re: Sequence sequence one shot color camera
Post by: Nocturnal on 2011 March 21 06:14:56

Ok so you have a color image that looks grey. You'll need to brighten it with a non-linear histogram stretch and possibly increase saturation with a curvetransformation. I'm pretty sure Harry has videos on these topics.