David's Astronomy Pages CCD Images - Session 842 (2020-12-22)

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Images (S843)

Objects	Session Notes
AT2020ablw - Attempted Observation (CV) 156P/Russell-LINEAR - Comet VV 94 - Interacting Galaxy (PGC 8704)     Variable Stars (photometric monitoring) - TT Ari     Nearby Stars (astrometric monitoring) - None	- Short evening session (1.0 hours) - Main aims of the session were the acquisition of a selection of variable star, nearby star and comet targets and deep sky targets before expected cloud arrived. - 12" LX200 + ST-10XME for imaging - TS 80mm APO + ZWO ASI178MC for guiding & imaging - Ambient Temperature: 1°C (min) - CCD Temperature:  -20/-25°C - Notes from 2020-12-22 >>      -

AT2020ablw - Attempted Observation (CV)

AT2020ablw (Pisces) AT2020ablw (Type: CV) discovered 2020/12/02.994 UT by MASTER Alias: MASTER OT J011516.48+245528.7, CRTS J011516.5+245530 Magnitude at discovery +14.9 vs normal magnitude ??  ( Rochester Supernova site )

AT2020ablw, 2020-12-20 (T+19.7d) Image below (2020-12-22.8739) was taken 19.7 days after reported discovery of AT2020ablw No indication of any bright object at the reported position of the CV (shown by white circle). Transient is not confirmed.   (Transient has probably dimmed back to normal magnitude)

Annotated CCD Image (50% size, linear scale) 3 x 120s exposure (average combine), 3x3 binning, C Filter 2020-12-22 17:44 UT (#842004-07) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT2020ablw - Detail, 2020-12-20 (T+19.7d)

Annotated CCD Image (100% size, linear scale, cropped) Image details as above

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156P/Russell-LINEAR - Comet

156P/Russell-LINEAR (passing through Andromeda) Sun Distance 1.39 AU (receeding) Earth Distance 0.73 AU (108.9 million km)		156P/Russell-LINEAR - 2020-12-22, Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra 89.53 arcsec/hr, Dec 78.32 arcsec/hr)
Annotated CCD Image (50% size, square root scale) 2 x 45s exposure (average combine), 3x3 binning, C Filter 2020-12-22 18:09 UT (#842018-19) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2		CCD Image (100% size, square root scale, cropped) 9 x 45s exposure (average combine), 3x3 binning, C Filter 2020-12-22 18:12 UT (#842018-26) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
Images of 156P/Russell-LINEAR on Comets 2020 Page >>

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VV 94 - Interacting Galaxy (PGC 8704)

VV 94 (Andromeda) Vorontsov-Velyaminov Catalogue Alias: PGC 8704 VV 94 (circled) is faint and very small Image taken with moon at 31% phase and separation angle of 44 deg

Annotated CCD Image (50% size, square root scale) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2020-12-22 18:29 UT (#842028-32) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

VV 94 -  Detail (Image is of poorer quality than the earlier image of 2020-12-20)

Annotated CCD Image (100% size, square root scale, cropped) Image details as above

VV 94 -  Earlier Image (2020-12-20)

CCD Image (150% size, square root scale, cropped) 4 x 180s exposure (average combine), 3x3 binning, C Filter 2020-12-20 22:54 UT (#840120-23) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

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