David's Astronomy Pages
CCD Images - Session 877 (2021-03-29)

Objects Session Notes
Bullet 7P/Pons-Winnecke - Comet
Bullet C/2020 T2 (Palomar) - Comet
   
Bullet Nova Per 2020 - Nova (V1112 Per, AT 2020abap)
   
Bullet AT 2021dbp - Type CV Transient
Bullet AT 2021ckv - Type YSO Transient  (GCVS PR Ori)
Bullet AT 2021gyc - CV Type Transient
Bullet AT 2021hdk - CV Type Transient
   
Bullet 2MASX J12303540+4257559 - Galaxy with AGN / Transient AT 2021bgi
Bullet IC 357 - Spiral Galaxy with AT2021fyd (unconfirmed)
Bullet MCG +6-30-84 - Galaxy (PGC 48870) with Type Ia Supernova 2021K
   
Bullet NGC 3310 - Spiral Galaxy (Herschel IV-60) with SN 2021gmj
Bullet NGC 3515 - Spiral Galaxy with Possible Transient AT 2021fmd
Bullet NGC 4227 - Spiral Galaxy with Type Ia Supernova 2021biz
Bullet NGC 4631 - Spiral Galaxy with Type LRN Transient AT 2021biy
   
Bullet UGC 3502 - Spiral Galaxy with Type Ia Supernova 2021cwc
Bullet UGC 5760 - Spiral Galaxy with Type II Supernova 2020zoq
Bullet UGC 5829 - Irregular Galaxy with LBV Transient AT 2021blu
Bullet UGC 6930 - Spiral Galaxy with Type Ia Supernova 2020rcq
   
Bullet Variable Stars (photometric monitoring)
- R CrB, U Her, BL Lac, ER UMa

   
Bullet Nearby Stars (astrometric monitoring)
- Barnards Star, 61 Cyg
  
   
- All Night session (7.7 hours)
- Main aims of the session were to acquire a selection of variable star, nearby star and comet targets and deep sky targets as cloud allowed
- Session interrupted by interval of cloud between 02:05 & 03:15
- 12" LX200 + ST-10XME for imaging
- TS 80mm APO + ZWO ASI178MC for guiding & imaging
- Ambient Temperature: 10°C (min)
- CCD Temperature:  -10°/-15°C
- Notes from 2021-03-29 >>
   [ Local Files >> ]  
-  
   

7P/Pons-Winnecke - Comet

7P/Pons-Winnecke
(passing through Serpens)

Sun Distance 1.42 AU (approaching)
Earth Distance 0.83 AU (124.0 million km)
Expected position of comet shown by white circle
   7P/Pons-Winnecke - 2021-03-30, Detail
Autoguided on offset star using PHD2 with Lock Shift
set at the comet's rate of motion
(Ra 114.49 arcsec/hr, Dec -8.63 arcsec/hr)
Comet is indicated by white cross-hairs.
Image   Image
Annotated CCD Image (50% size, square root scale)
3 x 45s exposure (average combine), 3x3 binning, C Filter
2021-03-30 03:41 UT (#877173-76)
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)
4 x 45s exposure (average combine), 3x3 binning, C Filter
2021-03-30 03:41 UT (#877173-77)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
     
Images of 7P/Pons-Winnecke on Comets 2021 Page >>    

Back to Top


C/2020 T2 (Palomar) - Comet

C/2020 T2 (Palomar)
(passing through Canes Venatici)
Sun Distance 2.39 AU (approaching)
Earth Distance 1.56 AU (233.7 million km)
Comet indicated by white cross-hairs
   C/2020 T2 (Palomar) - 2021-03-30, Detail
Autoguided on offset star using PHD2 with Lock Shift
set at the comet's rate of motion
(Ra -14.25 arcsec/hr, Dec 8.20 arcsec/hr)
Image   Image
Annotated CCD Image (50% size, square root scale)
3 x 45s exposure (average combine), 3x3 binning, C Filter
2021-03-30 03:13 UT (#877148-50)
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)
15 x 45s exposure (average combine), 3x3 binning, C Filter
2021-03-30 03:18 UT (#877148-62)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
     
Images of C/2020 T2 (Palomar) on Comets 2021 Page >>    

Back to Top


Nova Per 2020 - Nova (V1112 Per, AT 2020abap)

Nova Per 2020 (Perseus)
Nova in Perseus discovered 2020/11/25.807
[ Novae ]
Nova Per 2020 discovered independently by Seiji Ueda and Stanislav Korotkiy et al
AT 2020abap (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 - 2021-03-30 (T+124.2d)
Image below (2021-03-30.006) was taken 124.2 days after discovery of Nova
Nova is shown by white cross hairs.  
Measured magnitude +14.48
Image
CCD Image (100% size, linear scale, cropped)
4 x 90s exposure (average combine), 3x3 binning, C Filter
2021-03-30 00:13 UT (#877088-92)
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 >>
 

Back to Top


AT 2021dbp - Type CV Transient

AT 2021dbp (Auriga)
AT 2021dbp (Type: CV) discovered 2021/02/14.535 UT by Gaia
Alias: Gaia21auv,  GSC 2374:280
 ( Rochester Supernova site |  Gaia21auv )
Based on Gaia Alert at magnitude +10.04
 
AT 2021dbp - 2021-03-29 (T+43.3d)
Image below (2021-03-29.855) was taken 43.3 days after discovery of 2021dbp
CV is shown by white cross hairs.  Measured Magnitude +10.89 vs GSC magnitude  +10.2
Image
Annotated CCD Image  (100% size, linear scale, cropped)
4 x 60s exposure (average combine), 3x3 binning, C Filter
2021-03-29 20:35 UT (#877005-08)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
Images of AT 2021dbp on Transients 2021 Page >>

Back to Top


AT 2021ckv - Type YSO Transient  (GCVS PR Ori)

AT 2021ckv / PR Ori  (Orion)
AT 2021ckv (Type: YSO) discovered 2021/02/08.759 UT by Gaia
Alias: Gaia21arx, GCVS PR Ori
 
AT 2021ckv / PR Ori - 2021-03-29 (T+49.1d)
Image below (2021-03-29.863) was taken 49.1 days after discovery of 2021ckv
Position of reported YSO Type Transient is shown by white cross-hairs.
Measured Magnitude +11.07 (vs normal range of +12.2 to +13.6)
Image
Annotated CCD Image  (50% size, linear scale, cropped)
4 x 60s exposure (average combine), 3x3 binning, C Filter
2021-03-29 20:46 UT (#877012-15)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
Images of AT 2021ckv (PR Ori) on Transients 2021 Page >>

Back to Top


AT 2021gyc - Type CV Transient

AT 2021gyc (Perseus)
AT 2021gyc (Type: CV) discovered 2021/03/19.526 UT by Gaia
Alias: Gaia21blz
Bright blue gal.plane source rises by 0.2 mag
Alerting Magnitude 8.38 (vs historic magnitude 8.62)
 ( Rochester Supernova site |  Gaia21blz )
  
AT 2021gyc (T+10.4d)
CV is shown by white cross hairs. 
Image
Annotated CCD Image (50% size, linear scale)
2 x 60s exposure (average combine), 3x3 binning, C Filter
2021-03-29 21:23 UT (#877031-32)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
AT 2021gyc - 2021-03-29 (T+10.4d)
Image below (2021-03-29.888) was taken 10.4 days after discovery of 2021gyc
CV is shown by white cross hairs. 
Measured Magnitude +10.89 (probably underestimated)
Image
Annotated CCD Image  (100% size, linear scale, cropped)
2 x 60s exposure (average combine), 3x3 binning, C Filter
2021-03-29 21:23 UT (#877031-32)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
Images of AT 2021gyc on Transients 2021 Page >>

Back to Top


AT 2021hdk - CV Type Transient

AT 2021hdk (Ophiuchus)
AT 2021hdk (Type: CV) discovered 2021/03/25.862 UT by XOSS
Alias: XM64HT
Discovery Magnitude 15.71
 ( Rochester Supernova site |  TNS 2021hdk )
 
AT 2021hdk (T+4.3d)
Reported CV transient (faint) is shown by white cross hairs. 
Image
Annotated CCD Image (50% size, linear scale)
5 x 60s exposure (average combine), 3x3 binning, C Filter
2021-03-30 04:00 UT (#877190-94)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
AT 2021hdk - 2021-03-30 (T+4.3d)
Image below (2021-03-30.165) was taken 4.3 days after discovery of 2021hdk
Reported CV transient (faint) is shown by white cross hairs. 
Measured Magnitude +16.10
Image
Annotated CCD Image (50% size, linear scale)
5 x 60s exposure (average combine), 3x3 binning, C Filter
2021-03-30 04:00 UT (#877190-94)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
AT 2021hdk - Ref Image
No indication of any object at the position of the
reported transient  (shown by mauve cross-hairs)
Image
Reference Image DSS2
Images of AT 2021hdk on Transients 2021 Page >>

Back to Top


2MASX J12303540+4257559 - Galaxy with AGN / Transient AT 2021bgi

AT 2021bgi (Canes Venatici)
In 2MASX J12303540+4257559
AT 2021bgi (Type AGN, zhost=0.065590) discovered 2021/01/27.048 UT by GSNST
Alias: GSNST-21ar
 ( Rochester Supernova site )
 [ Active Galactic Nuclei ]
2MASX J12303540+4257559 with AT 2021bgi - 2021-03-29 (T+61.9d)
Image below (2021-03-29.990) was taken 61.9 days after discovery of 2021bgi
Transient/Galaxy nucleus is shown by white cross hairs. 
Combined magnitude +15.61 (fading ?)
Image
Annotated CCD Image  (125% size, square root scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, C Filter
2021-03-29 23:56 UT (#877081-85)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
Images of AT 2021bg (2MASX J12303540+4257559) on Transients 2021 Page >>

Back to Top


IC 357 - Spiral Galaxy with AT 2021fyd (unconfirmed)

IC 357 with AT 2021fyd (Taurus)
AT 2021fyd (Type: unk) discovered 2021/03/17.187 UT by ZTF
Alias: ZTF21aapdpup
Discovery Magnitude 18.01
(Rochester Supernova site | TNS 2021fyd )
 
IC 357 with AT 2021fyd - 2021-03-29 (T+12.7d)
Image below (2021-03-29.872) was taken 12.7 days after discovery of 2021fyd
Unable to identify transient. It might lay at or very close to
 the galaxy' center.  Transient is unconfirmed.
Measured Magnitude (nucleus) +14.77
Image
Annotated CCD Image (125% size, square root scale, cropped)
3 x 180s exposure (average combine), 3x3 binning, C Filter
2021-03-29 21:04 UT (#877021-23)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
Images of AT 2021fyd (IC 357) on Transients 2021 Page >>

Back to Top


MCG +6-30-84 - Galaxy (PGC 48870) with Type Ia Supernova 2021K

MCG +6-30-84 / PGC 48870 with SN 2021K (Canes Venatici)
MCG +6-30-84 / Alias
SN 2021K (Type: Ia) discovered 2021/01/01.490 UT by ZTF 
Discovery Magnitude 15.71
Alias: ZTF21aaabvjk, Gaia21acj
Confirmed SN Ia
Gaia, 2021-01-04 03:38:42, Mag 15.42
Gaia, 2021-01-27 03:33:29, Mag 15.86
Gaia, 2021-05-03 12:37:25, Mag 18.30
Gaia, 2021-05-16 06:43:09, Mag 18.49
Gaia, 2021-05-16 08:29:43, Mag 18.62
Gaia, 2021-07-28 07:08:07, Mag 19.80
Gaia, 2021-08-21 19:10:09, Mag 20.21
 (Rochester Supernova site | ZTF observations | TNS 2021K | Gaia21acj )
 
MCG +6-30-84 with SN 2021K - 2021-03-30 (T+87.5d)
Image below (2021-03-30.034) was taken 87.5 days after discovery of 2021K
Position of reported SN is shown by white cross hairs. 
Measured magnitude +15.29 (SN + Galaxy Centre) (steady)
vs  Host Galaxy Catalog Mag +15.29
Image
Annotated CCD Image  (125% size, square root scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, C Filter
2021-03-30 00:58 UT (#877102-06)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
Images of SN 2021K (MCG +6-30-84) on Supernovae 2021 Page >>

Back to Top


NGC 3310 - Spiral Galaxy  (Herschel IV-60) with Type II Supernova 2021gmj

NGC 3310 / Herschel IV-60 with SN 2021gmj (Ursa Major)
SN 2021gmj (Type: II) discovered 2021/03/20.320 UT by DLT40
Alias: ZTF21aaqgmjt, ATLAS21izq
 ( Rochester Supernova site |  Gianluca Masi image)
 
NGC 3310 with SN 2021gmj - 2021-03-29 (T+9.6d)
Image below (2021-03-29.917) was taken 9.6 days after discovery of 2021gmj
SN position indicated by white cross-hairs
Poor quality image (affected by wind shake/poor seeing)
Image
Annotated CCD Image (100% size, log scale, cropped)
3 x 180s exposure (average combine), 3x3 binning, C Filter
2021-03-29 22:13 UT (#877050-52)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
Images of SN 2021gmj (NGC 3310) on Supernovae 2021 Page >>
 

Back to Top


NGC 3515 - Spiral Galaxy with Possible Transient AT 2021fmd

NGC 3515 with AT 2021fmd (Leo Minor)
AT 2021fmd (Type: unk) discovered 2021/03/12.290 UT by ASAS-SN
Alias: ASASSN-21de
Discovery Magnitude 17.3 (ABMag vs Limiting flux: 17.5)
 ( Rochester Supernova site | TNS 2021fmd )
NGC 3515 with AT 2021fmd - 2021-03-30 (T+17.7d)
Image below (2021-03-30.017) was taken 17.7 days after discovery of 2021fmd
No definate confirmation of transient object it may be faint or very close to galaxy nucleus
Measured magnitude + 15.36 (nucleus+transient)
Image
Annotated CCD Image  (125% size, square root scale, cropped)
3 x 180s exposure (average combine), 3x3 binning, C Filter
2021-03-30 00:35 UT (#877096-99)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
Images of AT 2021fmd (NGC 3515) on Transients 2021 Page >>

Back to Top


NGC 4227 - Spiral Galaxy with Type Ia Supernova 2021biz

NGC 4227 with SN 2021biz (Canes Venatici)
SN 2021biz (Type: Ia) discovered 2021/01/29.543 UT by ATLAS
Alias: ATLAS21dfz
 (Rochester Supernova site | Gianluca Masi image | Jean-Claude Merlin image )
  
NGC 4227 with SN 2021biz - 2021-03-29 (T+59.4d)
Image below (2021-03-29.948) was taken 59.4 days after discovery of 2021biz
Postion of SN (faint) shown by white cross hairs. 
Measured magnitude +17.25
Image
Annotated CCD Image  (125% size, linear scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, C Filter
2021-03-29 22:52 UT (#877061-64)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
Images of SN 2021biz (NGC 4227) on Supernovae 2021 Page >>

Back to Top


NGC 4631 - Spiral Galaxy with Type LRN Transient AT 2021biy

NGC 4631 with AT 2021biy (Canes Venatici)
AT 2021biy (Type: LRN) discovered 2021/01/29.559 UT by ATLAS
Alias: ATLAS21dfy (Discovery Note)
 (Rochester Supernova site | Odd Trondal image | Nick James image )

LRN = Luminous Red Nova [ LRN Transients ]
 
NGC 4631 with AT 2021biy - 2021-03-30 (T+59.6d)
Image below (2021-03-30.119) was taken 59.6 days after discovery of 2021biy
Position of earlier LRN (not distinguishable/not visible) is shown by white cross hairs.
Image
Annotated CCD Image  (100% size, square root scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, C Filter
2021-03-30 03:00 UT (#877140-44)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
Images of AT 2021biy (NGC 4631) on Transients 2021 Page >>

Back to Top


UGC 3502 - Spiral Galaxy with Type Ia Supernova 2021cwc (faded)

UGC 3502 with SN 2021cwc (Camelopardalis)
SN 2021cwc (Type Ia, z=0.021) discovered 2021/02/13.381 UT by ATLAS
Alias: ATLAS21flz
 ( Rochester Supernova site |  Giancarlo Cortini image | Odd Trondal image )
 
UGC 3502 with SN 2021cwc - 2021-03-29 (T+44.5d)
Image below (2021-03-29.894) was taken 44.5 days after discovery of 2021cwc
Position of earlier SN (faded / not visible) is shown by white cross hairs. 
Image
Annotated CCD Image  (150% size, square root scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, C Filter
2021-03-29 21:36 UT (#877036-40)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
Images of SN 2021cwc (UGC 3502) on Supernovae 2021 Page >>

Back to Top


UGC 5760 - Spiral Galaxy with Type II Supernova 2020zoq

UGC 5760 with SN 2020zoq (Leo)
SN 2020zoq (Type II, z=0.0, zhost=0.010040) discovered 2020/11/14.561 by ASAS-SN
Discovery Magnitude +17.5 (g-Sloan)
 (Rochester Supernova site | Discovery Image | TNS 2020zoq )
 
UGC 5760 with SN 2020zoq - 2021-03-29 (T+135.4d)
Image below (2021-03-29.963) was taken 135.4 days after discovery of 2020zoq
Position of earlier SN (not distinguishable) is shown by white cross hairs.
Poor quality image (affected by wind shake/poor seeing and uneven sky background)
Image
Annotated CCD Image (125% size, square root scale, cropped)
2 x 180s exposure (average combine), 3x3 binning, C Filter
2021-03-29 23:11 UT (#877068-69)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
UGC 5760 with SN 2020zoq - Earlier Image 2020-11-22 (T+11.7d)
Image below (2020-11-26.219) was taken 11.7 days after discovery of SN 2020zoq
SN is shown by white cross hairs.   Measured magnitude +15.75
Image
Annotated CCD Image  (125% size, square root scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, C Filter
2020-11-26 05:16 UT (#833235-39)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
Images of SN 2020zoq (UGC 5760) on Supernovae 2020 Page >>

Back to Top


UGC 5829 - Irregular Galaxy (Spider Galaxy) with Type LBV Transient AT 2021blu

UGC 5829 with LBV 2021blu (Leo Minor)
AT 2021blu (Type: LBV) discovered 2021/02/01.467 UT by ATLAS
Alias: ATLAS21dic, ZTF21aagppzg
 [ Irregular Galaxies ]
 
UGC 5829 with LBV2021blu - 2021-03-29 (T+56.5d)
Image below (2021-03-29.933) was taken 56.5 days after discovery of 2021blu
Position of LBV (faint) is indicated by white cross-hairs.
Measured magnitude +17.83 (fading)
Image
Annotated CCD Image  (100% size, square root scale, cropped)
3 x 180s exposure (average combine), 3x3 binning, C Filter
2021-03-29 22:32 UT (#877055-57)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
Images of LBV 2021blu  (UGC 5829) on Transients 2021 Page >>

Back to Top


UGC 6930 - Spiral Galaxy with Type Ia Supernova 2020rcq

UGC 6930 with SN 2020rcq (Ursa Major)
SN 2020rcq (Type 1a) discovered 2020/08/09.168 by Zwicky Transient Facility (ZTF)
Discovery Magnitude +18.43 (r-ZTF Filter)
 (Rochester Supernova site | Giancarlo Cortini image | TNS 2020rcq )
 
UGC 6930 with SN 2020rcq - 2021-03-29 (T+232.8d)
Image below (2021-03-29.978) was taken 232.8 days after discovery of 2020rcq
SN (faint) is shown by white cross hairs.  
Measured SN magnitude +17.53
Image
Annotated CCD Image (100% size, square root scale, cropped)
3 x 120s exposure (average combine), 3x3 binning, C Filter
2021-03-29 23:37 UT (#877076-78)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
Images of SN 2020rcq (UGC 6930) on Supernovae 2020 Page >>

Back to Top