The Triangulum Galaxy


David Slack

Prudhoe, Northumberland

Orion ED80 refractor, Altair Astro 0.6 focal reducer, SXV-H9 CCD, ZWO RGB filters, Astronomik CLS filter, Baader 7nm Ha filter, HEQ5 pro and a finder guider.

This is a HaRGB image of the loosely bound spiral galaxy M33. Taken over 2 nights, it comprises 15 x 10 minute luminance exposures through a CLS LP filter, 7 x 3 minutes RGB (21 subs in total) and 34 x 5 minutes Ha (2×2 bin)