Helena Observatory,   Tupperville, NS

M51 and Supernova SN 2011dh

18-Sep-2026 08:41 ADT 18-Sep-2026 11:41 UTC

M51 and Supernova SN 2011dh, 6-Jun-2011

Scope: Orion 200mm Astrograph, f/4
Mount: HEQ5
Guiding: none
Imaging Camera: Pentax ISD-DL
ISO: 1600
Frames: 30 @ 58s
Total Exposure: 29m0s
Processing: DSS, Photoshop
Distance: 23 Mly
 
There was a lot of light in the sky, so a lot of background noise, but capturing a supernova was worth it.

 

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Last modified: 02-Feb-2019