Observation by Graham Roberts: M33 Triangulum Galaxy

Uploaded by

Graham Roberts

Observer

Graham Roberts

Observed

2021 Nov 04 - 19:00

Uploaded

2021 Dec 21 - 13:44

Objects

The Triangulum Galaxy (M33)

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Constellation

Triangulum

Field centre

RA: 01^h33^m
Dec: +30°40'
Position angle: -89°28'

Field size

1°27' × 1°02'

Title

M33 Triangulum Galaxy

About this image

Only 15^o from M31, M33 AKA the Triangulum Galaxy is the third-largest member of the Local Group of galaxies after Andromeda and the Milky Way. Although faint, in very good dark night sky conditions M33 can apparently be viewed with the naked eye.

Andromeda is eight times brighter and nearly four times larger than Triangulum, which for various reasons I have previously found difficult to image, despite its relative proximity to us. On this occasion I was therefore pleased to obtain a good data set over three nights that included 3-hours of 10-minute Ha exposures. The result is definitely my best image yet of this tricky but attractive target, which in particular highlights the numerous red HII-regions that abound throughout the galaxy’s arms.

For additional image details please refer to my website here: https://watchthisspaceman.wordpress.com/2021/12/12/galactic-triplets/

Files associated with this observation

M33 HaLRGB_FINALX (Medium).png (1.1 MB)

Like this image

Martina McGovern, Martin Lewis, Callum Potter, Mike Greenhill-Hooper, Chris Hooker

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