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

Objects Session Notes
Bullet 156P/Russell-LINEAR - Comet
   
Bullet AT2020ablw (CV) (Attempt)
   
Bullet VV 94 - Interacting Galaxy (PGC 8704)
   
Bullet Variable Stars (photometric monitoring)
- TT Ari
   
Bullet 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 >>
    
-  
   

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

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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
Image
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)
Image
Annotated CCD Image (100% size, square root scale, cropped)
Image details as above
 
VV 94 -  Earlier Image (2020-12-20)
Image
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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