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De Nova Stella (in M100), 


            Joel Shepherd

De Nova Stella (in M100)

Technical card

Imaging telescope or lens:TEC 140 APO FL

Imaging camera:Atik 460EX Mono

Mount:Astro-Physics Mach1GTO

Guiding telescope or lens:TEC 140 APO FL

Guiding camera:Lodestar X2

Software:Sequence Generator ProPixInsight 1.8

Filters:Baader Planetarium G 1.25"Baader Planetarium R 1.25"


Dates:April 27, 2019April 28, 2019April 29, 2019

Baader Planetarium G 1.25": 8x180" -10C bin 1x1
Baader Planetarium R 1.25": 30x180" -10C bin 1x1

Integration: 1.9 hours

Avg. Moon age: 23.54 days

Avg. Moon phase: 35.56%

Bortle Dark-Sky Scale: 6.00

Basic astrometry details job: 2702220

Resolution: 428x887

Locations: Home, Seattle, WA, United States

Data source: Backyard


Okay, I'm still geeking out on this supernova thing. Here are three images produced from lights that I took of the galaxy M100, for the nights of April 27-29, 2019. You can see that on 4/27 there is nothing to be seen, on 4/28 there appears to be a faint dot and on 4/29 there is "de nova stella": the supernova SN2019ehk. By now, it has faded to the point that it's probably again undetectable by amateur equipment here on earth. I was extraordinarily lucky to happen to be photographing this galaxy when the light from this event reached the earth:



Joel Shepherd
License: Attribution Creative Commons


De Nova Stella (in M100), 


            Joel Shepherd