Contains: Sunflower galaxy, M 63, NGC 5055
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M63: Sunflower Galaxy (SN 2017dfc)

Technical card

Resolution: 3347x2232

Dates: May 15, 2017May 16, 2017May 17, 2017May 18, 2017

Frames:
ZWO Blue: 41x150" (gain: 150.00) -20C
ZWO Green: 49x150" (gain: 150.00) -20C
ZWO H-alpha 7nm: 22x300" (gain: 150.00) -20C
Baader IR-Cut Moon & Skyglow Neodymium : 49x150" (gain: 150.00) -20C
ZWO Red: 42x150" (gain: 150.00) -20C

Integration: 9.4 hours

Avg. Moon age: 20.26 days

Avg. Moon phase: 69.10%

Astrometry.net job: 1649501

RA center: 198.942 degrees

DEC center: 42.029 degrees

Pixel scale: 0.920 arcsec/pixel

Orientation: -161.366 degrees

Field radius: 0.514 degrees

Description

My data looks okay, but I'm having a particularly difficult time processing - I'm thinking my light pollution is causing havoc.

Comments

Author

Chris Sullivan
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Revisions

J

Mostly just added a "super luminance" layer constructed from all LRGB subframes.

K

Looks like I caught SN 2017dfc in my data! Here's a close-up inversion to show it more clearly.

L

Inspired by today's APOD from the HST and Suburu Telescope, I decided to give my M63 another look and found it... very colorless. I made some modifications to selective color, cropped it tighter and added a little more noise reduction.

M

One final adjustment - the outer 'nebulosity' just looked too green for me.

Sky plot

Sky plot

Histogram

M63: Sunflower Galaxy (SN 2017dfc), Chris Sullivan