LRGB Stacking not detecting B,R frames

[NGC1977]

After running analysis on my list of LRGB frames, all of the B and R frames are coming back with "?B" and "?R" respectively. How do I get ASTAP to properly recognize them as they apparently did for L and G?

Running ASTAP 2023.05.04, 64 bit on Windows.

Thank you!

[han.k]

The colour labels of the B and R lights should match with the names in the table in tab stack method.

Just look into the header of the B, R lights and look to the text behind keyword FILTER. Type that in the table. Then press analyse again. See attached screenshot.

That should work. If not ask again

Cheers, Han

[NGC1977]

Thank you, that did the trick.