David's Astronomy Pages CCD Images - Session 643 (2018-12-23)

Images (S642)

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Images (S644)

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Session Notes

46P/Wirtanen - Comet     Photometric Monitoring - Variables    - AM Her, DY Per - AM CVn , SS Her, CY Lyr attempts failed     Astrometric Monitoring - Nearby Stars  - None

- Evening Session (3.7 hours duration) . Poor sky transparency - Main aim of the session was acquire images of a selection of nearby stars, variable stars and deep sky objects , and perform software testing.'     - 12" LX200 + ST-10XME for imaging - TS 80mm APO + ZWO ASI178MC for guiding & imaging - Ambient Temperature:  -2.5°C (minimum)  - CCD Temperature:  -25°C (70% av. power) - Notes from 2018-12-23 >>

46P/Wirtanen - Comet

46P/Wirtanen (passing through Auriga) Sun Distance 1.07 AU Earth Distance 0.09 AU (13.6 million km) poor conditions (bright sky gradients)
CCD Image (50% size, linear scale) 3 x 15s exposure (average combine), 3x3 binning, C Filter 2018-12-24 07:28 UT (#643070-72) 12" LX200R (at f/10.4) + ST-10XME
46P/Wirtanen - Earlier Image (2019-12-16) (passing through Taurus) Near to point of closest distance from earth Sun Distance 1.06 AU Earth Distance 0.08 AU (11.6 million km)		46P/Wirtanen - Earlier Image (2019-12-16)
CCD Image (50% size, linear scale) 15s exposure (single frame), 3x3 binning, C Filter  2018-12-16 21:03 UT (#641184) 12" LX200R  (at f/10.4) + ST-10XME (Autoguided on comet using TS 80mm APO + ZWO ASI178MC)		CCD Image (50% size, log scale) 31 x 15s exposure (average combine), 3x3 binning, C Filter  2018-12-16 21:03 to 21:16 UT (#641184-222) 12" LX200R  (at f/10.4) + ST-10XME (Autoguided on comet using TS 80mm APO + ZWO ASI178MC)
		False Color CCD Image (50% size, logscale) Inverse Spectrum Image details as above

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