Observation by Martin Butcher: M33 - The Triangulum Galaxy.

Uploaded by

Stuart Morris

Observer

Martin Butcher

Observed

2009 Oct 17 - 00:49

Uploaded

2021 Mar 28 - 18:08

Objects

The Triangulum Galaxy (M33)

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Constellation

Triangulum

Field centre

RA: 01^h34^m
Dec: +30°42'
Position angle: +1°05'

Field size

2°31' × 1°38'

Equipment

Meade LX-90 8" telescope fitted to its field tripod by an equatorial wedge.
LX-90 Periodic Error Correction enabled.
Dew Removal straps fitted to telescope and camera lens
Telescope and camera powered by Mains Power.
Stock Canon 40D with 200mm f/2.8 lens stopped down to f/4
Telescope driven but unguided

Exposure

Twelve sub-exposures each 10 minutes long taken at ISO400.

Location

Isle of Colonsay

Target name

M33

Title

M33 - The Triangulum Galaxy.

About this image

M33, The Triangulum Galaxy is a spiral galaxy 2.73 million light-years from Earth in the constellation Triangulum.

Equipment used:- Stock Canon 40D with 200mm f/2.8 lens stopped down to f/4 mounted piggy-back on Meade LX-90 8" telescope fitted to its field tripod by an equatorial wedge. Telescope polar aligned. LX-90 Periodic Error Correction enabled. Dew Removal straps fitted to telescope and camera lens and operating. Telescope driven and manually guided. Telescope and camera powered by Mains Power.

Exposure details:- Twelve sub-exposures each 10 minutes long taken at ISO400. Ambient temperature 3 degrees Celsius at beginning reducing to one degree Celsius at the end.

Processing details:- After quality control 9 sub-exposures calibrated with Dark, Flat-field and Bias master frames before being combined in Images Plus. Image then further processed in Photoshop CS3 and Noise Ninja. North is at the top.

Narrative description:- Twenty eight days after New Moon. The weather was cold, calm and clear with very heavy dew.

Files associated with this observation

MButcherNGC598 or M33.jpg (316.8 kB)

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