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Contains:  IC 783, IC783, M 100, M100, NGC 4312, NGC 4321, NGC 4322, NGC 4328, NGC4312, NGC4322, NGC4328
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M100 and SN2019ehk, 


            Joel Shepherd
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M100 and SN2019ehk

Technical card

Imaging telescopes or lenses:TEC 140 APO FL

Imaging cameras:Atik 460EX Mono

Mounts:Astro-Physics Mach1GTO

Guiding telescopes or lenses:TEC 140 APO FL

Guiding cameras:Lodestar X2

Software:Sequence Generator ProPixInsight 1.8

Filters:Baader Planetarium LRGB CCD 1.25"


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

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

Integration: 4.5 hours

Avg. Moon age: 23.54 days

Avg. Moon phase: 35.56%

Bortle Dark-Sky Scale: 6.00 job: 2701226

RA center: 12h 22' 33"

DEC center: +15° 44' 26"

Pixel scale: 1.197 arcsec/pixel

Orientation: -56.513 degrees

Field radius: 0.348 degrees

Resolution: 1600x1351

Locations: Home, Seattle, WA, United States

Data source: Backyard


First light with a TEC140 that was delivered in February of this year. This is M100, a Milky Way-sized spiral galaxy, roughly 55 million light years distance.

As I was finishing processing tonight, I learned that a supernova had been discovered in M100 by Jaroslaw Grzegorzek, on the same night (April 29) that I took my last lights of this target. Apparently, I caught it. See green crosshairs in the image and this page for reference:

I have to tell you: as excited as I am to start working with the TEC, and as moderately pleased as I am with this image (colors were a challenge), I'm thrilled with accidentally capturing my first supernova: something that's been on my bucket list for a while.



Joel Shepherd
License: Attribution Creative Commons

Sky plot

Sky plot


M100 and SN2019ehk, 


            Joel Shepherd

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Suburban Astrophotography