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Observation by Tim Haymes: SN 2021gmj in NGC 3310

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Tim Haymes

Observer

Tim Haymes

Observed

2021 Mar 21 - 23:16

Uploaded

2021 Mar 22 - 00:45

Objects

NGC3310

Equipment
  • C11 at F5.5
  • QHY174m-gps
Exposure

30s x 14 stacked

Location

Nr Oxford

Target name

Super Nova 2021gmj

Title

SN 2021gmj in NGC 3310

About this image

Cloud was moving in, and this was causing some deterioration in transparency.  14 x 30s  FITS files stacked with darks as TIFF and stretched in Photoshop CS2.  The image is cropped to show the galaxy more clearly. The SN is indicated on the image. 

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Comments
Tim Haymes
Tim Haymes, 2021 Mar 22 - 22:33 UTC

I used ASTAP and then Astrometrica. The magnitude (UCAC4) was 14.9 but this was including the spiral arms, so i tentatively put the magnitude at 15.3 +/-0.2 ( no filter).

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