M51

 Posted: May 19th, 2026
Technical Info
Telescope/Lens: Hubble space telescope
Camera: ASC/WFC
Software: Siril, PixInsight, Photoshop
Exposure:
24 x 680" ISO/Gain: 0 - F435W
24 x 340" ISO/Gain: 0 - F555W
24 x 340" ISO/Gain: 0 - F814W
24 x 340" ISO/Gain: 0 - F658N
 Earth Orbit, Estonia
 Jan 12th, 2005
11 h 20 m
17
Resolution: 11509x7608 px
Scale: 16197 KB
Yes, I fully understand that this photo was not taken with my telescope, but with the Hubble Space Telescope. Still, I really enjoy working with such data: processing it, examining the finest details, and sharing this beauty with others. Especially now, when the weather and white nights prevent me from shooting myself.

Processing was done in Siril and PixInsight. In Siril, histogram stretching was performed on the RGB and H-alpha channels, then in PixInsight — channel combination and work with the color stack in Siril. Final processing and image refinement were done in Adobe Photoshop.
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