MAPOW Nr 5: Magnificent Pinwheel

M101, the Pinwheel Galaxy, is a wonderful galaxy in Ursa Major.

Here is the latest result of the collaboration between me and my friend Luigi Fontana. The RGB signal was caught by Luigi with his ODK 12" and an unmodified Canon 6D.

Since the unmodified Canon is nearly blind to hydrogen light, I added the Hα signal, caught with a William Optics FLT 110 with my SBIG ST2000XM and a Baader Hα filter.

The Pinwheel Galaxy M101

Messier 101 (M101), The Pinwheel Galaxy

Date and locationApril 11th and May 10th 2015
SensorSBIG ST2000XV (Hα)
Canon 6D unmodified (RGB)
TelescopeWilliam Optics FLT 110
ODK 12"
Mount10Micron GM1000 HPS
10Micron GM2000 QCI
ExposureBaader Planetarium Hα 7nm: 16x900" binning 1
Canon 6D: 39x600s ISO 1600
Total exposure10.5 hours
AuthorLuigi Fontana and Edoardo Luca Radice
NotesProcessing: PixInsight 1.8