Hemisphere:  Northern  ·  Constellation: Triangulum (Tri)  ·  Contains:  M 33  ·  NGC 598  ·  Triangulum galaxy
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M33 - RGB (via OSC), 


M33 - RGB (via OSC)
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M33 - RGB (via OSC)

Technical card

Imaging telescopes or lenses: Celestron Edge HD 8"

Imaging cameras: ZWO Optical ASI071MC-Pro

Mounts: iOptron CEM120

Guiding telescopes or lenses: Celestron Edge HD 8"

Guiding cameras: Starlight Xpress Lodestar 2

Software: Aries Productions Astro Pixel Processor (APP ) v.1 068  ·  PixInsight 1.8

Filters: Baader Planetarium UHC-S

Accessory: Pegasus Astro FocusCube v2  ·  MoonLight Crayford CHL V2  ·  Atik OAG  ·  Atik EFW2 Filter Wheel

Dates:Jan. 19, 2020

Frames:Baader Planetarium UHC-S: 17x600" (gain: 90.00) -5C bin 2x2

Integration: 2.8 hours

Darks: ~20

Bias: ~20

Avg. Moon age: 24.19 days

Avg. Moon phase: 28.98%

Bortle Dark-Sky Scale: 4.00

Basic astrometry details

Astrometry.net job: 3196319

RA center: 1h 33' 51"

DEC center: +30° 39' 10"

Pixel scale: 0.887 arcsec/pixel

Orientation: 86.913 degrees

Field radius: 0.358 degrees

Resolution: 2432x1592

Data source: Backyard


First attempt of M33 via the EdgeHD 8 f/10 setup and processing it in PI while a new PC monitor. The picture lacks more data due to f/10 but nevertheless almost no cropping besides the usual corners was done on it.

This time I also, for the first time, switched to a bin 2x2 camera setting to check if it might improve the overall quality of the pictures.

This also to see if the image would improve as hinted by astronomy.tools, CCD suitability and a post once read from Sara Wager about the influence of binning (https://www.swagastro.com/to-bin-or-not-to-bin.html)

*) A - Quick & Dirty first processing attempt
*) C - Second attempt, less hasty, with RGB channels "split, process and recombine" approach



  • Final
    M33 - RGB (via OSC), 


  • M33 - RGB (via OSC), 



Sky plot

Sky plot


M33 - RGB (via OSC),