Stack images from different cameras?

[Jockinireland]

So I have two sets of images of M27. The same OTA and Focal reducer but two different cameras - although both are un-modded Canon EOS 1100D. I have full sets of flats and darks from each set of lights and they are largely the same orientation/framing etc.

Is it possible (or worthwhile) to stack these altogether in DSS - I'm guessing you'd do them in different "group" tabs but can seem to work out how to do that.

Any suggestions?

Rgds

David

[yobbo89]

I have done so with two asi 1600's, and using full stacks from different seasons, ie like 3 hrs of ha from last year and 2 hrs another year of already calibrated data with no problems, i think as long as you keep everything separated then it should be fine ie you stack the data of one camera with it's darks lights flats and then the other camera with it's darks lights flats then combine the two.

I don't know if this is a good way to do so, someone pls correct.

i'll add as well, some people will stack a little of red channel data with their ha to balance out their lum channel, so it seems to be working with mixing and matching in deep sky stacker or other software,

weather it's worthwhile or contains problems, i don't know you'll have to experiment and find out yourself

[Stuart]

Calibrate them first separately, find a registration frame and then stack.

[madperk]

Astro Pixel Processor has that function. I've been using APP for the stacking and calibration phase of my processing workflow for close to a year. I still use photoshop for the final processing, but it does a great job of stacking, noise reduction, color calibration, and light pollution removal. Here is a link to a tutorial where they took images from five different sources to create one final image.

https://www.astropixelprocessor.com/reg ... c-lnc-mbb/

[Jockinireland]

I did a bit of reading and it turns out this is easy to do in DSS - simply put each data set - lights and calibration frames in their own "group" tab and DSS will apply the calibration frames to the appropriate lights then register and stack them all together. Easy Peasy!

So I did that with two data sets, from consecutive nights and with different EOS 1100D cameras and, after processing, got the image below. I had previously posted my image from only one set of data and this one has about 50 % more integration time (45 X 60s against 30 X 60s) There is definitely more detail in the nebula. Still a long way to go though but thats another trick learned! Anyone know a trick to get rid of that blotchy sky?

[madperk]

Looks great.

Not a Pi guy. I know a few ways in photoshop though.

[Jockinireland]

Looks great.

Not a Pi guy. I know a few ways in photoshop though.

Thanks!

Photoshop is what I use so suggestions would be gratefully received!

[madperk]

Astronomy tools photoshop actions. Specifically space noise reduction, deep space noise reduction, color blotch removal and less crunchy more fuzzy.
https://www.prodigitalsoftware.com/Astr ... tions.html

You can also subtract all your stars from an image and all your left with is nebulostity and background space. Isolate those areas you want to flatten and use a Gaussian blur to smooth the background. Then reapply your stars. I'm still fiddling with this as I only learned about it a few weeks ago.

[madperk]

Take a look at starnet++ mentioned in this post.

viewtopic.php?f=22&t=1204

And here are three shots from one of my posts showing some results.

viewtopic.php?f=66&t=3122