Observation by Mike Olason: C/2023 A3 on the morning of 2024 October...

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BAA Comet Section

Observer

Mike Olason

Observed

2024 Oct 01 - 12:41

Uploaded

2024 Oct 05 - 19:09

Objects

C/2023 A3 (Tsuchinshan-ATLAS)

Full filename

2023a3/2023a3_20241001_1241_molason.jpg

Target name

C/2023 A3

Title

C/2023 A3 on the morning of 2024 October 1 UT was magnitude G=2.4 as calculated from 8x2 second images taken thru a red filter in an aperture diameter of 5'. Looking at yesterday's magnitude calculation it became clear that the images used for the calculation were near saturation and did not generate enough stars for Astrometrica to properly calculate the comets magnitude. By using images a few minutes after the comet rose above the mountains Astrometrica had more good stars to calculate a magnitude G=2.8 for the comet on 2024 September 30

About this image
C/2023 A3 on the morning of 2024 October 1 UT was magnitude G=2.4 as calculated from 8x2 second images taken thru a red filter in an aperture diameter of 5'. Looking at yesterday's magnitude calculation it became clear that the images used for the calculation were near saturation and did not generate enough stars for Astrometrica to properly calculate the comets magnitude. By using images a few minutes after the comet rose above the mountains Astrometrica had more good stars to calculate a magnitude G=2.8 for the comet on 2024 September 30
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