M101 Pinwheel Galaxy

M101 Pinwheel Galaxy

Curdridge Observatory, Southampton,UK
Object name: M101 Pinwheel Galaxy
Apparent RA: 14 03 12.4  Apparent Dec:+54 20 58
Constellation: Ursa Major
08 Apr 2014
Unusual look for this popular spring galaxy: m101 with the 3nm Hydrogen alpha filter on the Atik 490 with 2x binning. 10 exposures of 900s.

The Ha filter cuts out all the light from M101 except for the Ha light from the bright star forming regions in the spiral arms.

View full sized image of M101 Pinwheel Galaxy

cCaptured in maxim.

This image was autoguided using my homemade off axis guider with Lodestar.

Imaged with my homemade telescope mount

Exposure Details :

Coma Corrector Astrodon 3nm Ha 10x900s on 200 @ F5 f.l. 1000 with Artemis 285 camera


Skywatcher 200 Newt (upgraded with OO Hilux secondary)
Baader Focuser
Homemade focus motor
Homemade filterwheel / OAG combo with Lodestar guide camera
Artemis 285 CCD camera
Homemade Telescope mount

Curdridge Observatory, Southampton,UK

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