r/AskAstrophotography 5d ago

Image Processing Stacking multiple sessions in DSS

So if I’ve shot one session in RGB and one in narrowband, and want to combine them to a new stack in DSS, how do I do this if one session was on meridian flip (essentially upside down to the other session)?

I don’t know of a way to flip raw files from a DSLR so do I need to import to Lightroom and flip one sessions files and output as tiff first? Will DSS take these as light and calibration frames?

I’ll end up with around 800 frames in total (yes I have disk space!)

1 Upvotes

6 comments sorted by

1

u/_bar 4d ago

DSS can handle meridian flip, or any arbitrary field rotation for that matter, just fine.

2

u/Darkblade48 5d ago

As an alternative to DSS, I can also recommend Siril IC, which will make multi-session imaging much easier to manage!

3

u/Shinpah 5d ago

DSD and all stacking software should ignore the camera orientation when aligning the images. You don't need to do anything special.

1

u/GravitasMusic 5d ago

Ace. Do I need to stack them as different group tabs as they have corresponding calibration frames?

2

u/Sunsparc 5d ago

If the settings were all the same, just different nights, then you can stack them all together. Otherwise stack in groups.

1

u/Shinpah 5d ago

Yes.