Observation by Mike Greenhill-Hooper: NGC 253 - starburst galaxy in Sculptor

Uploaded by

Mike Greenhill-Hooper

Observer

Mike Greenhill-Hooper

Observed

2024 Nov 28 - 18:15

Uploaded

2024 Dec 01 - 14:46

Objects

The Sculptor Galaxy (NGC253)

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Constellation

Sculptor

Field centre

RA: 00^h47^m
Dec: -25°17'
Position angle: +158°39'

Field size

0°24' × 0°14'

Equipment

Telescope: 20" f/4 Obsession Dobsonian; Paracorr coma corrector
ASI294MMPro with RGB filters

Exposure

4x150 frame live stacks for each filter; 2s exposure, gain 450, temp 1C, dark and flats corrected

Location

Miradoux, S.W. France

Target name

NGC 253

Title

NGC 253 - starburst galaxy in Sculptor

About this image

Images aligned stacked and processed with GraXpert and Affinity Photo, pre-calibrated by SharpCap Pro (darks, flats). This was a tricky object due to its low declination and I used filters in the order RGB, allowing the B images to be captured at the highest altitude, believing they would be the most affected by atmospheric refraction near the horizon. I took L images at the end of the session, but could not use these as the galaxy started to disappear behind a tree in my garden and as a result there were some oval stars due to poor live stacking and some missed frames. It didn't seem to affect the final result.

Files associated with this observation

NGC253 M Greenhill Hooper 281124 v2.jpg (1.4 MB)

Like this image

Manolo_Rodriguez, Simon Paul Davis

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