M101 The Pinwheel galaxy



Imaged by Jean-Yves Beninger from Ollioules on 17 July 2023

Astro-Physics AP92, Field Flattener for 644mm focal length, f7

Rainbow Astro RST-135E mount

ZWO ASI2600MC camera with UVRI cut filter


M101 was discovered by Pierre Mechain on 27 March 1781 and added as one of the last entries in Charles Messier's catalogue. It was one of the first "spiral nebulae" identified by William Parsons.

Burnham's Celestial Handbook






Imaged by Jean-Yves Beninger from Singapore on 6 May 2019

AP130 and QSI 683wsg-8 camera, L filter

AP Mach1 mount