Hemisphere:  Northern  ·  Constellation: Taurus (Tau)  ·  Contains:  Crab nebula  ·  M 1  ·  M1  ·  NGC 1952  ·  Sh2-244
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M1 - SHO, 


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Imaging telescopes or lenses: Astro-Physics Riccardi-Honders 305mm

Imaging cameras: Finger Lakes Instruments ML16200

Mounts: 10 Micron GM3000 HPS

Guiding telescopes or lenses: Stellarvue F050G

Guiding cameras: ZWO ASI178MM

Software: Pleaides Astrophoto PixInsight 1.8 Ripley  ·  PHD2

Filters: Astrodon OIII 3nm  ·  Astrodon Ha 3nm  ·  Astrodon SII 3nm

Dates:Dec. 10, 2020Dec. 11, 2020Jan. 9, 2021Jan. 10, 2021

Astrodon Ha 3nm: 25x600" -25C bin 1x1
Astrodon OIII 3nm: 29x600" -25C bin 1x1
Astrodon SII 3nm: 25x600" -25C bin 1x1

Integration: 13.2 hours

Darks: ~25

Flats: ~5

Bias: ~25

Avg. Moon age: 25.71 days

Avg. Moon phase: 15.95%

Astrometry.net job: 4146985

RA center: 5h 34' 29"

DEC center: +22° 2' 17"

Pixel scale: 0.552 arcsec/pixel

Orientation: 179.106 degrees

Field radius: 0.346 degrees

Resolution: 3670x2638

Locations: Mathias, Mathias, WV, United States

Data source: Own remote observatory

Remote source: Non-commercial independent facility


I finally did a Hubble palette image. :)

This is 13 hours of data from December 2019 and January 2021. Processing was a little different from what I've been doing lately. I opted for a drizzle integration since the nebula was so small, even in an 1,100mm focal length telescope.

On each master:
dynamic crop
MLT noise reduction

on the combined master:
channel combination
cloned the master

On the first copy (call it starless)
mild stretch (moved the histogram up about ⅛ on the graph)
curves for contrast

on the second copy (call it stars)
minimal stretch to bring out some stars but not too many
adv sharpening script

combined the two with max(stars, starless) using pxielmath
final crop


Sky plot

Sky plot


M1 - SHO,