Observation by David Swan: Astrometry: C/2017 T1 (Heinze)

Uploaded by

David Swan

Observer

David Swan

Observed

2018 Jan 01 - 21:00

Uploaded

2018 Jan 02 - 11:31

Objects

C/2017 T1 (Heinze)

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Constellation

Lynx

Field centre

RA: 07^h18^m
Dec: +49°19'
Position angle: +114°55'

Field size

0°27' × 0°13'

Equipment

200mm SCT @ f/6.3
ASI178MM
Baader UV+IR cut
FireCapture, DeepSkyStacker and Astrometrica

Exposure

3 x 5s

Location

Tynemouth, UK

Target name

C/2017 T1 (Heinze)

Title

Astrometry: C/2017 T1 (Heinze)

About this image

Computer clock was sync'ed to time.nist.gov just prior to observing. I stacked three five-second frames centred on 21:00:08 UT on 01/01/2018. I astrometrically reduced the image and to my surprise found that the position of the object in my image was way off that predicted by the MPC (nearly two arcmin in RA and Dec). Fortunately, my position was much closer to that on the JPL Horizons website - so I'm less worried than I was. Also a major plus: I've completely solved the fixed pattern noise problem (horizontal bands gone!)

JPL Horizons, object at 21:00:00 - RA 07 18 45 Dec 49 17 09

DJS, object at 21:00:08 - RA 07 18 45 Dec 49 17 13

Files associated with this observation

astrometryheinze.PNG (1.3 MB)

Like this image

Jeremy Shears, Peter Mulligan, Peter Carson

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