M1 LHaGB

[FraserClarke]

M1 in L, H-alpha, G and B (actually photometric V and . Trying to learn how to do LRGB image processing from MartinB's excellent tutorials. Think this is not the ideal target though as the L is so dominated by the broadband emission from the core that it rather loses the nice H-alpha structure in the outer regions.

Image quality is about 2.2" FWHM on the stars, which is not too bad. I still need to play with the registration, as the plate scale of the image is subtly different in the H-alpha filter than the others (slight colour misalignment on the left of the image). I think this is about 40 minutes of L, 2 hrs of H-alpha and 30 min of B and V. Camera is SBIG ST8 on a 16-inch LX200 at f/6.3

Image is resized to 50% here because of the size rules (and it makes the stars look sharper! )

[ollypenrice]

That's looking good. I think a lot of people use an O111 layer to bring the R and B deeper into the core. Registqr would sort out your slight plate scale mismatch but isn't a giveaway!

Olly

[Glasspusher]

Very nice, you are a man of many talents!!!

John