Had some fun experiment with my data of M81 and M82, aka. Bode's Galaxy and the Cigar Galaxy. I wanted to figure out how well I can combine different focal lengths. Back in April 2025, I captured 9 hours of exposure time in pure RGB at a focal length of 400 mm.

Someone on a community Discord server shot the same target at 250 mm with a similar camera, but in narrowband H-Alpha & OIII. He kindly made his data available to me.

#astrodon #astrophotography #space #astronomy