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Astro Gallery

M 101

Astro Gallery  >  Astronomy  >  Messier
M 101
M 101


Object name: M 101
Popular name: Pinwheel Galaxy
Object type: Galaxy
Magnitude: 7.5
Size: 28.8'x26.9'
Position angle: 26°
Constellation: Ursa Major

Watec 120N camera on 8" f/4 Newtonian telescope. Baader IR/UV filter. Stack of 48x10.24s images with 50x10.24s dark frames and 50 flat frames subtracted. Captured in VirtualDub, stacked in DeepSkyStacker and processed in PhotoShop Elements 5. FITS files extracted from AVI file using AstroVideo. Watec focussed using K3CCDTools.

Conditions during the capture were very poor. Haze virtually obliterated the galaxy halfway through the process. The image has been heavily processed and shows some artefacts. I will replace this image when I can get a better one.


This image has been viewed 311 times
M 101 image © J C Talbot
Image taken 7th Mar 2008
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