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Contains:  M 63, NGC 5055, Sunflower galaxy
Getting plate-solving status, please wait...
M63 (Sunflower Galaxy), 


            Joel Shepherd
M63 (Sunflower Galaxy)
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M63 (Sunflower Galaxy)

Technical card

Dates:March 19, 2019

Baader Planetarium B 1.25": 24x300" -10C bin 1x1
Baader Planetarium G 1.25": 22x300" -10C bin 1x1
Baader Planetarium R 1.25": 24x300" -10C bin 1x1

Integration: 5.8 hours

Avg. Moon age: 12.96 days

Avg. Moon phase: 96.37%

Bortle Dark-Sky Scale: 6.00

Basic astrometry details job: 2656952

RA center: 13h 15' 49"

DEC center: +42° 1' 51"

Pixel scale: 1.001 arcsec/pixel

Orientation: 26.392 degrees

Field radius: 0.288 degrees

Resolution: 1600x1317

Locations: Home, Seattle, WA, United States

Data source: Backyard


This is probably the last hurrah for my 8" Edge. I've learned a lot (with the usual commensurate cost in effort and frustrations) from its long focal length and moving mirror but after a couple of years I've concluded that it's not the scope that I look forward to taking out. Will find it a more appreciative home.

This is from just under six hours of RGB over one night, with a synthetic luminance. While the green channel lights were being taken, some high thin clouds came through so I ended up discarding a couple of lights and the rest don't have SNR on par with the other two channels. This target has become kind of a benchmark for my equipment, capture and processing skills, so I'm looking forward to coming back to it in a couple years with another scope that hasn't quite yet made it into service ...



Joel Shepherd
License: Attribution Creative Commons


  • M63 (Sunflower Galaxy), 


            Joel Shepherd
  • Final
    M63 (Sunflower Galaxy), 


            Joel Shepherd


Description: I reprocessed this, trying out Mure Denoise for the first time, and taking a different approach to stretching as well. Mure Denoise made it possible to pull out the fainter edges of the galaxy without bringing up a ton of noise in the background. A different approach to stretching seemed to lead to better color balance and brightness. The brightest stars have some kind of weird chromatic aberration. I'm not sure if it's atmospheric (I didn't think the target was particularly low) or some misalignment in the light path. Disappointing, but there it is.

Sky plot

Sky plot


M63 (Sunflower Galaxy), 


            Joel Shepherd