Hemisphere:  Northern  ·  Contains:  IC131  ·  IC132  ·  IC133  ·  IC135  ·  IC136  ·  IC137  ·  IC142  ·  IC143  ·  M 33  ·  M33  ·  NGC 598  ·  NGC588  ·  NGC592  ·  NGC595  ·  NGC604  ·  Triangulum galaxy
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M33 (Triangulum Galaxy), 


            Joel Shepherd
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M33 (Triangulum Galaxy)

Imaging telescopes or lenses: Skywatcher Esprit 80ED APO Triplet

Imaging cameras: Atik 460EX Mono

Mounts: Astro-Physics Mach1GTO

Guiding telescopes or lenses: Orion Deluxe Mini 50mm Guide Scope with Helical Focuser

Guiding cameras: Lodestar X2

Software: Sequence Generator Pro  ·  PixInsight 1.8

Filters: Baader Planetarium B 1.25"  ·  Baader Planetarium G 1.25"  ·  Baader Planetarium R 1.25"  ·  Astrodon 5nm H-alpha

Accessory: Skywatcher Field Flattener for Esprit 80

Dates:Sept. 26, 2017Sept. 27, 2017Oct. 16, 2018

Astrodon 5nm H-alpha: 12x600" 0C bin 1x1
Baader Planetarium B 1.25": 14x180" 0C bin 1x1
Baader Planetarium B 1.25": 16x300" 0C bin 1x1
Baader Planetarium G 1.25": 12x180" 0C bin 1x1
Baader Planetarium G 1.25": 18x300" 0C bin 1x1
Baader Planetarium R 1.25": 12x180" 0C bin 1x1
Baader Planetarium R 1.25": 18x300" 0C bin 1x1

Integration: 8.2 hours

Avg. Moon age: 6.64 days

Avg. Moon phase: 42.22%

Bortle Dark-Sky Scale: 6.00

Astrometry.net job: 2459216

RA center: 1h 33' 50"

DEC center: +30° 39' 37"

Pixel scale: 2.713 arcsec/pixel

Orientation: 65.315 degrees

Field radius: 0.776 degrees

Resolution: 1600x1293

Locations: Home, Seattle, WA, United States

Data source: Backyard


I captured about four more hours of RGB and Ha data on M33 this past October, and combined it with the RGB data I captured the previous year. This is the result. It is stretched somewhat less than my earlier effort, and although the nebulosity is more subtle, I actually like this rendition more. Triangulum is faint and I have to believe that any appreciable distance it would appear to be a structured mist more than a bright gleaming oval ... but that's just my interpretation.



Joel Shepherd
License: Attribution Creative Commons

Sky plot

Sky plot


M33 (Triangulum Galaxy), 


            Joel Shepherd

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