M33, taken Sept.14, 2007 for stack of 4 x 3 minute exposures with 135mm L-series lens at f/2.8 and Canon 20Da camera at ISO 800. Simulates binocular field.
The Local Group spiral galaxy, Messier 33 in Triangulum, with some of its star forming nebulas showing up as green-blue Oxygen III regions in its spiral arms. This is a stack of 30 x 6-minute exposures, with the Starfield Optics Géar115 f/7 apo refractor taken as part of testing the scope, with its 1x Adjustable Field Flattener for the scope's native 805mm focal length, and with the stock 45-megapixel Canon R5 at ISO 1600. Autoguided and dithered with the MGEN3 autoguider on the Astro-Physics Mach1 mount. No dark frames or LENR applied on this chilly night in December 2022. Noise reduction with RC-Astro Noise XTerminator; star reduction with RC-Astro StarShrink. Galaxy details were enhanced with applications of: a masked High Pass Sharpen filter, Starizona's Galaxy Enhance action, and PhotoKemi Dark Details action. All stacking, alignment and processing in Photoshop.
