M 101

Posted by on Sep 19, 2019

M 101

The Pinwheel Galaxy (also known as Messier 101, M101 or NGC 5457) is a face-on spiral galaxy distanced 21 million light-years (six megaparsecs) away from Earth in the constellation Ursa Major.

Raw images:
Luminance: 18 x 5min Bin:1
Red: 8 x 5min (Total: 40min) Bin:2x2
Green: 8 x 5min (Total: 40min) Bin:2x2
Blue: 8 x 5min (Total: 40min) Bin:2x2
Seeing: 2-3"

Equipment used:
ASA N12 Astrograph F/3.6
3" Wynne Corrector 0.95x
Moravian G3-16200 camera @-25C
No guiding

Astrodon L,R,G,B

Valla Observatory (FROSON, Sweden)
Mars 20, 2017

Image processing:
Images calibrated and processed in Pixinsight
Some work in Photoshop

Image palette:
Normal LRGB palette

 Image information:
Scale: 1.14 arcsec/pix
FOW: 86x70 arcmin

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