British Astronomical Association
Supporting amateur astronomers since 1890

BAA Images Graeme Coates

Observation by Graeme Coates: M33 - The Triangulum Galaxy

Uploaded by

Graeme Coates

Observer

Graeme Coates

Observed

2020 Nov 16 - 00:00

Uploaded

2020 Dec 17 - 09:59

Objects

The Triangulum Galaxy (M33)
NGC604
NGC592
NGC595
NGC588

Planetarium overlay









Constellation

Triangulum

Field centre

RA: 01h33m
Dec: +30°40'
Position angle: +84°44'

Field size

2°28' × 1°48'

Equipment
  • Skywatcher Esprit 80ED
  • MI-250
  • STF8300M
Exposure

29.7 hours total

Location

EEYE

Target name

M33 - The Triangulum Galaxy

Title

M33 - The Triangulum Galaxy

About this image

Here shown as an LRGB + Ha image, M33 is a spiral galaxy located about 2.7 million light years from the Milky Way and is the third largest of the local group behind our own galaxy and M31 in Andromeda.

The LRGB image has been enhanced by the addition of HA data (using lighten mode in Photoshop with a selective mask) to bring out regions of HA emission in the galaxy, and this shows both star forming regions such as NGC604 (the brightest HA region present above the galaxy core here), as well as various loops, arcs and bubbles in the outer arms of the galaxy, some of which are in the IC catalogue (though far from all!).

L: 10h
R: 3h20m
G: 3h10m
B: 2h10m (affected by thin cloud)
Ha: 11h

Image Acquisition: Paul Tribe and Graeme Coates
Processing: Graeme Coates

Files associated with this observation
Like this image
Copyright of all images and other observations submitted to the BAA remains with the owner of the work. Reproduction of work by third parties is expressly forbidden without the consent of the copyright holder. By submitting images to this online gallery, you grant the BAA permission to reproduce them in any of our publications.