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Observation by Mike Harlow: SN 2021hpr in NGC3147

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Mike Harlow


Mike Harlow


2021 Apr 12 - 22:00


2021 Apr 13 - 07:31



Planetarium overlay



Field centre

RA: 10h16m
Dec: +73°23'
Position angle: -2°12'

Field size

0°11' × 0°11'

  • 12 inch F/3.6 astrograph
  • Starlight Xpress H16 CCD (2048 x 2048 pxl)
  • Astrodon luminance filter (400-700nm)

23 x 30 seconds


Ipswich, UK

Target name

SN 2021hpr in NGC3147


SN 2021hpr in NGC3147

About this image

My first look at this 'bright' supernova in a really nice galaxy.  See also recent images by Tim Haymes, David Swan, Stewart Bean and Ivan Walton. More details are on the Forum post for this supernova.

Field 12 x 12 arc minutes with north up.  150% original image size.

Update 15th April:

Image annotated with the position of cataclysmic variable CP Dra.  A BAAJ article on this object by J. Shears was published in 2010. CP Dra can approach mag 14 at maximum so it is clearly not currently in outburst!

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