M101 Pinwheel Galaxy

M101 Pinwheel Galaxy

17 Apr 2010
Object name: M101 Pinwheel Galaxy
Apparent RA: 14 03 12.4  Apparent Dec: +54 20 58
Constellation: Ursa Major

Probably the last image of the season, a 4 hour integration on M101. Some equipment issues have lead to some odd shaped stars in this image of the slightly irregular M101 face on spiral galaxy. Also a test of a new light box for making flat fields. No great issue with image flatness, so that is a success. Various parts of M101 have their own designation, so this image also shows NGC5462, NGC5461, NGC5458, NGC5453, NGC5455, NGC5449, NGC5451, NGC5447, NGC5450 and the outlying background galaxy PGC 49919 / MCG 9-23-25 in the top left.

View full sized image of M101 Pinwheel Galaxy

Captured in ArtemisCapture, calibrated in ImagetoolsCa, combined in maxim, thuggery in photoshop. Total integration time 4 hours.

This image was autoguided using my homemade off axis guider and my black and white SC1 webcam.

Imaged with my homemade telescope mount

Exposure Details :

Coma Corrector 79x180s on 200mm @ F5 with ART285

Curdridge Observatory, Southampton,UK