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M33 NGC 598 Triangulum Galaxy

I decided to reprocess M33, the original was too red, too noisy and over saturated. I hope you like this version.


This is another Collaboration with Andy D'Arienzo, he shot the Ha from New York using his TMB. For my part the LRGB (color and luminence) was shot from Fremont Michigan.

Total Exposure time 19.5 hours


This was my first attempt and old version shot in 2009 for comparison using the QHY8 on the TMB130


Andy's details

Location of shoot: Waning Crescent Observatory Long Island New York

Date of shoot: 6th October 2011

Ha11x30 minute subs

TMB 92ss

FLI ML8300

FLI CFW 2-7 Filter Wheel

Astronomiks HA, S2, OIII 50mm unmounted filter


Borg mini 50mm guidescope

StarShoot Autoguider

CCD Stack

Photoshop CS/2


Terry's Details

Location: DownUnder Observatory, Fremont MI

Date of Shoot 2nd thru 7th October 2011

RED 12x15 min

GREEN 16x15 min

BLUE 16x15 min

LUM 12x15 min

Total 14 hours


Camera: QHY9M monochrome CCD by

Scope: TMB 130SS F7 Refractor using Williams Optics 68mm Field Flattener.

Autoguided using QHY5 autoguider

Guide scope Celestron Short Tube 80mm refractor.

Paramount GT-1100S German Equatorial Mount (with MKS 4000)

Image Aquisition software Maxim DL5

Stacking software Deep sky Stacker

Registered with Registar

Post Processed with Photoshop CS5.


M33 is a spiral galaxy at approximately 3 million light years distance in the constellation Triangulum. It is catalogued as Messier 33 or NGC 598, and is sometimes informally referred to as the Pinwheel Galaxy, a moniker it shares with Messier 101. The Triangulum Galaxy is a member of the Local Group of galaxies, which includes the Milky Way Galaxy, the Andromeda Galaxy and about 30 other smaller galaxies

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Taken on October 17, 2011