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Observation by Nick James: M31 mosaic

Uploaded by

Nick James

Observer

Nick James

Observed

2020 Sep 05 - 19:30

Uploaded

2020 Sep 06 - 09:28

Objects

M31

Planetarium overlay









Constellation

Andromeda

Field centre

RA: 00h42m
Dec: +41°19'
Position angle: -0°00'

Field size

1°42' × 1°51'

Equipment
  • Celestron HD11 + FLI6303
Exposure

12 panels of 2x120s

Location

Chelmsford, UK

Target name

M31

Title

M31 mosaic

About this image

I've been playing around with automatically generating mosaics. This is last night's effort on M31. My C11 system has a FoV of 34x22 arcmin  (Celestron HD11 and a KAF-6303 CCD). The telescope is scripted to take the individual panels, in this case 2 exposures of 120s for each of the 15 panels. The images are then calibrated and background normalised using my normal pipeline, plate solved using a local version of astrometry.net and combined into a mosaic using swarp. There is no human intervention in this. The background normalisation isn't brilliant but the general process works quite well giving something like 3 square degrees of coverage to mag 19.5 in an hour. Not quite LSST though!

The full resolution version is here.

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