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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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Messier 33, 


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Messier 33

Imaging telescopes or lenses: Celestron RASA 11"

Imaging cameras: ZWO ASI294MC Pro  ·  ZWO ASI 1600 MM Cooled Pro

Mounts: Paramount MX +

Guiding telescopes or lenses: Orion 30mm Ultra Mini guide scope

Guiding cameras: ZWO ASI120MM Mini

Software: Main Sequence Software Seqence Generator Pro 3  ·  PHD2  ·  pixinsight 1.85

Filters: astrodon 5nm narrowband filters

Accessory: Starizona Microtouch Autofocuser  ·  Interactive Astronomy SkyRoof  ·  Interactive Astronomy Sky Alert  ·  SkyShed Roll-off

Dates:Nov. 25, 2019

Frames: 310x30"

Integration: 2.6 hours

Avg. Moon age: 28.30 days

Avg. Moon phase: 1.70% job: 3080272

RA center: 1h 33' 47"

DEC center: +30° 38' 1"

Pixel scale: 1.542 arcsec/pixel

Orientation: -82.909 degrees

Field radius: 0.683 degrees

Resolution: 2570x1890

Locations: JRO - Home Observatories, Milford, New Jersey, United States

Data source: Backyard


Another go at M33 with 30 sec subs



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License: None (All rights reserved)


  • Messier 33, 


            Tom's Pics
  • Final
    Messier 33, 


            Tom's Pics


Description: I added another couple of hours of data and also added in some Ha data. Total integration is 310 x 30s subs + 20 x 4m Ha subs. I also tried for the first time breaking my RGB into channels and performing the linear processing on each of them before combining. Adding in the Ha data is also something I have never tried to do, it really made the Red Ha pop which I personally like. A shout out to Trevor from AstroBackYard for encouraging me to process channels independently and also to add in Ha to my color images. Also a thanks to Christopher Gomez for the good YouTube tutorial on how to combine Ha with RGB data in PI. Comments welcome!

Sky plot

Sky plot


Messier 33, 


            Tom's Pics