David's Astronomy Pages
CCD Images - Session 844 (2021-01-03)

Objects Session Notes
Bullet 29P/Schwassmann-Wachmann - Comet
Bullet 277P/LINEAR - Comet
Bullet 398P/Boattini - Comet
   
Bullet Nova Per 2020 - Nova (V1112 Per, AT2020abap)
   
Bullet AT2020acxk - Variable Star (CV)
Bullet AT2021bl - Extragalactic Nova in M33
   
Bullet SN 2020aagy - Type II Supernova in WISEA J005708.87 +544449.6
   
Bullet UGC 1161 - Spiral Galaxy with Type Ia Supernova 2020acch
   
Bullet Variable Stars (photometric monitoring)
- RX And, U And, CN Ori

- RR Tau attempt failed due to cloud
   
Bullet Nearby Stars (astrometric monitoring)
- None
  
   
- Evening session (5.3 hours)
- Main aims of the session were to resynchronise Scope Position/T Point Model by performing a short mapping job and to acquire a selection of variable star, nearby star and comet targets and deep sky targets as cloud/showers allowed
- 12" LX200 + ST-10XME for imaging
- TS 80mm APO + ZWO ASI178MC for guiding & imaging
- Ambient Temperature: 2°C (min)
- CCD Temperature:  -20°C
- Notes from 2021-01-03 >>
    
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29P/Schwassmann-Wachmann - Comet

29P/Schwassmann-Wachmann
(passing through Aries)
Sun Distance 5.85 AU (receeding)
Earth Distance 5.35 AU (801.0 million km)
   29P/Schwassmann-Wachmann  - 2021-01-03, Detail
Autoguided on offset star using PHD2 with Lock Shift
set at the comet's rate of motion
(Ra 0.73 arcsec/hr, Dec -4.38 arcsec/hr)
Image   Image
Annotated CCD Image (50% size, square root scale)
6 x 30s exposure (average combine), 3x3 binning, C Filter
2021-01-03 22:16 UT (#844049-55)
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)
Image details as left
     
Images of 29P/Schwassmann-Wachmann on Comets 2020 Page >>    

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277P/LINEAR - Comet

277P/LINEAR
(passing through Aries)
Sun Distance 1.90 AU
Earth Distance 1.20 AU (179.0 million km)
Comet shown by white cross-hairs
Several faint galaxies in same field of view
   277P/LINEAR - 2021-01-03, Detail
Autoguided on offset star using PHD2 with Lock Shift
set at the comet's rate of motion
(Ra 46.70 arcsec/hr, Dec -29.05 arcsec/hr)
Only one confirmed fragment, other candidates are NED galaxies
(cf. earlier 2021-01-02 image where there seemed to be two)
Image   Image
Annotated CCD Image (50% size, square root scale)
4 x 60s exposure (average combine), 3x3 binning, C Filter
2021-01-03 21:10 UT (#844017-20)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
  Annotated CCD Image (100% size, square root scale, cropped)
4 x 60s exposure (average combine), 3x3 binning, C Filter
2021-01-03 21:10 UT (#844017-20)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
     
Images of 277P/LINEAR on Comets 2021 Page >>    

  

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398P/Boattini - Comet

398P/Boattini
(passing through Orion)
Sun Distance 1.31 AU
Earth Distance 0.39 AU (57.6 million km)
   398P/Boattini - 2021-01-03, Detail
Alias: P/2020 P2 (Boattini)
Autoguided on offset star using PHD2 with Lock Shift
set at the comet's rate of motion
(Ra 49.69 arcsec/hr, Dec 91.10 arcsec/hr)
Image   Image
CCD Image (50% size, square root scale)
2 x 45s exposure (average combine), 3x3 binning, C Filter
2021-01-03 22:28 UT (#844060-61)
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)
8 x 45s exposure (average combine), 3x3 binning, C Filter
2021-01-03 22:31 UT (#844060-67)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
     
Images of 398P/Boattini on Comets 2020 Page >>    

  

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Nova Per 2020 - Nova (V1112 Per, AT2020abap)

Nova Per 2020 (Perseus)
Nova in Perseus discovered 2020/11/25.807
discovered independently by Seiji Ueda and Stanislav Korotkiy et al
AT2020abap (Type: CV) reported 2020/11/27.230 UT by PGIR
Alias: N Per 2020 , PGIR20fbf, TCP J04291888+4354233, TCP J04291884+4354232, V1112 Per
 
Nova Per 2020 - 2021-01-03 (T+39.2d)
Image below (2021-01-03.986) was taken 39.2 days after discovery of Nova
Nova is shown by white cross hairs.  Measured magnitude +10.9
Image
CCD Image (100% size, linear scale, cropped)
2 x 90s exposure (average combine), 3x3 binning, C Filter
2021-01-03 23:40 UT (#844091-92)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
Images of Nova Per 2020 on Novae Page >>
 

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AT2020acxk, outburst of candiate CV (CRTS J010522.2+110253) - Variable Star (CV)

AT2020acxk (Pisces)
AT2020acxk (Type: CV) discovered 2020/12/16.316 UT by Gaia
Alias: Gaia20ftq, CRTS J010522.2+110253
Magnitude at discovery +15.1 vs normal magnitude of +20.8
 ( Rochester Supernova site | Gaia20ftq )
 
AT2020acxk, 2021-01-03 (T+18.6d)
Image below (2021-01-03.908) was taken 18.6 days after discovery of AT2020acxk
Magnitude : CV faded signficantly  (> +18)
Image
Annotated CCD Image (50% size, linear scale)
5 x 60s exposure (average combine), 3x3 binning, C Filter
2021-01-03 21:48 UT (#844037-41)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
AT2020acxk - Detail, 2021-01-03 (T+18.6d)
Image
Annotated CCD Image (100% size, linear scale, cropped)
Image details as above
 
AT2020acxk - Earlier Image, 2020-12-21 (T+5.7d)
Image below (2020-12-21.979) was taken 5.7 days after discovery of AT2020acxk
CV is shown by white cross hairs.  Measured magnitude +15.6
Image
Annotated CCD Image (100% size, linear scale, cropped)
5 x 60s exposure (average combine), 3x3 binning, C Filter
2020-12-21 23:30 UT (#841009-13)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
AT2020acxk - Earlier Image, 2020-12-20 (T+4.5d)
Image below (2020-12-20.821) was taken 4.5 days after discovery of AT2020acxk
CV is shown by white cross hairs.  Measured magnitude +15.6
Image
Annotated CCD Image (100% size, linear scale, cropped)
5 x 60s exposure (average combine), 3x3 binning, C Filter
2020-12-20 19:42 UT (#840061-65)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 

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AT2021bl - Extragalactic Nova in M33

 AT2021bl in M33 (Triangulum)
AT2021bl (Type: unk) discovered 2021/01/03.688 UT by XOSS
Alias: XM48MZ
EGN shown by white cross hairs
Image
Annotated CCD Image  (50% size, square root scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, C Filter
2021-01-03 23:20 UT (#844079-83)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
AT2021bl in M33 - 2021-01-03 (T+0.3d)
Image below (2021-01-03.972) was taken 0.28 days after discovery of AT2021bl
EGN is shown by white cross hairs.  Magnitude ?   (vs +17.9 at discovery)
Image
Annotated CCD Image  (100% size, square root scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, C Filter
2021-01-03 23:20 UT (#844079-83)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
Images of AT2021bl on M33 Page >>

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SN 2020aagy - Type II Supernova in WISEA J005708.87 +544449.6

SN 2020aagy (Cassiopeia)
SN 2020aagy (Type: II) discovered 2020/11/17.364 UT by ATLAS
Alias: ATLAS20bfpj
 ( Rochester Supernova site )
 
SN 2020aagy - 2021-01-04 (T+47.7d)
Image below (2021-01-04.087) was taken 47.7 days after discovery of SN 2020aagy
SN is shown by white cross hairs.  Magnitude ?
Image
Annotated CCD Image  (200% size, square root scale, cropped)
180s exposure (single frame), 3x3 binning, C Filter
2021-01-04 02:05 UT (#844100)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
Images of SN 2020aagy on Supernovae 2020 Page >>
 

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UGC 1161 - Spiral Galaxy with Type Ia Supernova 2020acch 

UGC 1161 with SN 2020acch (Andromeda)
SN 2020acch (Type: Ia,  zhost=0.017072) discovered 2020/12/10.204 UT by ZTF
Alias: ZTF20acvziuf
 ( Rochester Supernova site )
 
UGC 1161 with SN 2020acch - 2021-01-03 (T+25.4d)
Image below (2021-01-03.919) was taken 25.4 days after discovery of SN 2020acch
SN is shown by white cross hairs.  Est Magnitude ~ +16.2
Image 
Annotated CCD Image  (150% size, square root scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, C Filter
2021-01-03 22:03 UT (#844043-47)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
Images of SN 2020acch (UGC 1161) on Supernovae 2020 Page >>
 

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