21p 20180903 jpurvis

Comet 21P/Giacobini-Zinner in Auriga on 3rd September 2018. Just managed to get 8 x 45 second subs at ISO 800 before the clouds closed in. Tried longer subs but the nucleus/coma started to blur. This was taken with: 8 x 45 second exposures at ISO 800 with a 200mm Canon f/2.8 L lens at f/3.5. Modified Canon 80D camera, IDAS LPS D1 filter. AstroTrac TT 320X AG mount with QHY PoleMaster Backyard EOS focusing and acquisition control SQM = 20.17 magnitude/arcsec2 Astrometry: Centre (RA, hms): 05h 18m 21.524s Centre (Dec, dms): +43 48' 24.992" Image size: 103 x 59.5 arcmin Pixel scale: 3.95 arcsec/pixel

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