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Video astrometry of comet C/2015 V2 (Johnson)


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About this observation
Alex Pratt
Time of observation
26/03/2017 - 02:08
Comet C/2015 V2 (Johnson)
Observing location
C11 @ f/3.3
Watec 910 video camera
IOTA-VTI GPS time inserter
Tangra software
0.32s integrations
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Video astrometry of comet C/2015 V2 (Johnson) was obtained during a couple of recent clear nights.

Tangra plate-solved ~200 video frames from each 1 minute recording. The comet had a sky motion <2"/min so Tangra plotted each measure of RA and Dec and their median values. Clicking on the mini-plot gives the RA and Dec (and magnitude estimate) at the selected instant and its corresponding 5-figure time for reporting to MPC.

The resultant MPC formatted lines are:-

    CK15V020  C2017 03 23.88768 16 31 59.54 +47 23 09.6          12.8 N      Z92

    CK15V020  C2017 03 23.93029 16 31 59.90 +47 23 16.3          12.9 N      Z92

    CK15V020  C2017 03 26.02843 16 32 09.92 +47 27 51.4          12.6 N      Z92

    CK15V020  C2017 03 26.04709 16 32 09.93 +47 27 53.6          12.7 N      Z92

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