David's Astronomy Pages (Solar System) Comets - 2017

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	Comet Images (2017)	This page summarises observations and images of comets in 2017
	C/2015 ER61 (PANSTARRS) (Nov 2017)
	C/2015 V2 (Johnson) (Jan 2017)
	C/2016 R2 (PANSTARRS) (Dec 2017)
	C/2017 T1 (Heinze) (Dec 2017)

C/2015 ER61 (PANSTARRS) - Nov 2017

C/2015 ER61 (PANSTARRS) (passing through Aries) Sun distance 2.93 AU

Annotated CCD Image (50% size) 4 x 30s exposure (average combine), 3x3 binning, C Filter 2017-11-15 03:49h UT (#604064-68) 12" LX200R  (at f/10.4) + ST-10XME (Autoguided using TS 80mm APO + ZWO ASI178MC)

C/2015 ER61 (PANSTARRS) - Detail

Negative CCD Image (75% size, cropped) Image details as above

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C/2015 V2 (Johnson) - Jan 2017

C/2015 V2 (Johnson) (passing through Bootes) Sun distance 2.48 AU

CMOS Colour Image (16% size) Live Stacking of 61 frames 10 min (61 x 10s), Binning 1x1, Gain 400, Raw16, ROI 3096x2080  2017-01-19 01:56h UT   (#01_56_24Z) TS 80mm f/6 APO + ASI178MC Mounted on 12" LX200R Autoguiding using ST-10XME + 12" LX200R f/10

C/2015 V2 (Johnson)  - detail

CMOS Colour Image (50% size, cropped) Image details as above

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C/2016 R2 (PANSTARRS) - Dec 2017

C/2016 R2 (PANSTARRS) (passing through Gemini) Sun distance 3.02 AU (Bright object in upper-left corner of the image is the +7.2 mag star HIP 22221)

CCD Image (50% size, Linear Scaling) 2 x 60s exposure (average combine), 3x3 binning, C Filter  2017-12-13 22:29h UT (#607079-80) 12" LX200R  (at f/10.4) + ST-10XME (Autoguided using TS 80mm APO + ZWO ASI178MC)

C/2016 R2 (PANSTARRS) - detail Image demonstrates motion of comet against background stars

CCD Image (100% size, Linear Scaling) 9 x 60s exposure (average combine), 3x3 binning, C Filter  Frames aligned on combine before stacking 2017-12-13 22:21 to 22:34h UT (#607073-83) 12" LX200R  (at f/10.4) + ST-10XME (Autoguided using TS 80mm APO + ZWO ASI178MC)

C/2016 R2 (PANSTARRS) - detail Image demonstrates size of comet's Coma

CCD Image (100% size, Linear Scaling) 3 x 180s exposure (average combine), 3x3 binning, C Filter  Frames aligned on stars before stacking 2017-12-13 22:40 hUT (#607084-86) 12" LX200R  (at f/10.4) + ST-10XME (Autoguided using TS 80mm APO + ZWO ASI178MC)

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C/2017 T1 (Heinze) - Dec 2017

C/2017 T1 (Heinze) (passing through Hydra) Sun distance 1.49 AU

CCD Image (50% size, Linear Scaling) 6 x 45s exposure (average combine), 3x3 binning, C Filter  2017-12-14 00:35h UT (#607129-35) 12" LX200R  (at f/10.4) + ST-10XME (Autoguided using TS 80mm APO + ZWO ASI178MC)

C/2017 T1 (Heinze) - detail

CCD Image (100% size, Aligned on Comet, Cropped) Image details as above

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