David's Astronomy Pages CCD Images - Session 858 (2021-02-10)

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Session Notes

AT 2021bfs - Transient Fe-II Star in M31 UGC 1436 - Spiral Galaxy with Type Ia Supernova 2021nv Nova Per 2020 - Nova (V1112 Per, AT 2020abap) 398P/Boattini - Comet AT 2021clj - Candidate Nova in M31 (Nova M31 2021-02b?) NGC 684 - Spiral Galaxy with Type II Supernova 2021ass AT 2021bhf - Type CV Transient (Unconfirmed) AT 2021ckv - Type YSO Transient  (GCVS PR Ori) UGC 5760 - Spiral Galaxy with Type II Supernova 2020zoq NGC 4227 - Spiral Galaxy with Type Ia Supernova 2021biz UGC 6930 - Spiral Galaxy with Type Ia Supernova 2020rcq 7P/Pons-Winnecke - Comet C/2020 T2 (Palomar) - Comet SN 2021xn - Type Ia Supernova in PGC 6041 NGC 4041 - Spiral Galaxy (H I-252) with AT 2021cek (Unconfirmed) NGC 4151 - Spiral Galaxy with AGN Outburst UGCA 275 - Irregular Galaxy (PGC 39146) UGCA 279 - Elliptical Galaxy (PGC 40339) UGC 5829 - Irregular Galaxy with LBV Transient AT 2021blu UGCA 262 - Spiral Galaxy (PGC 37862) NGC 4145A - Spiral Galaxy (UGC 7175, VV 814), 1.29 Gly UGCA 289 - Spiral Galaxy (PGC 41965) NGC 4775 - Spiral Galaxy (UGCA 306) UGC 9083 - Spiral Galaxy / Transient AT 2021buk Struve 1814 - Double Star (WDS STF 1814) UGC 7125 - Spiral Galaxy (PGC 38567) NGC 4631 - Spiral Galaxy with Type LRN Transient AT 2021biy     Variable Stars (photometric monitoring) - U Her     Nearby Stars (astrometric monitoring) - Barnards Star, DX Cnc,

- All Night session (10.3 hours) - Main aims of the session were to acquire a selection of variable star, nearby star and comet targets and deep sky targets - Very cold conditions (-10°C (min)  ) - 12" LX200 + ST-10XME for imaging - TS 80mm APO + ZWO ASI178MC for guiding & imaging - Ambient Temperature: -10°C (min) - CCD Temperature:  -30°/-35°C - Notes from 2021-02-10 >>    [ Local Files >> ]   -

AT 2021bfs - Transient Fe-II Star in M31

AT 2021bfs in M31 (Andromeda) AT 2021bfs (Type: FeII) discovered 2021/01/26.720 UT by Italian Supernovae Search Project Alias: PNV-OMB15, PNV J00425220+4116246

AT 2021bfs in M31 - 2021-02-10 (T+15.1d) Image below (2021-02-10.854) was taken 15.1 days after discovery of 2021bfs Transient has faded. Previous position is shown by white circle

Annotated CCD Image  (100% size, log scale) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-02-10 20:40 UT (#858020-24) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2021bfs in M31 - 2021-02-01 (T+6.2d) Image below (2021-02-01.883) was taken 6.2 days after discovery of 2021bfs Transient is shown by white cross-hairs

Annotated CCD Image  (100% size, log scale) 4 x 180s exposure (average combine), 3x3 binning, C Filter 2021-02-01 21:19 UT (#857105-08) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2021bfs in M31 - 2021-01-31 (T+5.1d) Image below (2021-01-31.816) was taken 5.1 days after discovery of 2021bfs Transient is shown by white cross-hairs

Annotated CCD Image  (100% size, log scale) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-01-31 19:45 UT (#856019-23) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Earlier Image 2020-10-23 Image below (2020-10-23) was taken several  months before discovery of AT 2021bfs Position of later transient is shown by white circle.   No indication of any object at position of AT 2021bfs

Annotated CCD Image (100% size, square root scale, cropped) 3 x 120s exposure (average combine), 3x3 binning, C Filter 2020-10-23 20:40 UT (#820069-72) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2021bfs on M31 Page >>

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UGC 1436 - Spiral Galaxy with Type Ia Supernova 2021nv

UGC 1436 with SN 2021nv (Aries) [ Supernovae 2021 ] SN 2021nv (Type: Ia) discovered 2021/01/07.263 UT by ATLAS Magnitude +17.8 at discovery Alias: ATLAS21aqr  (Rochester Supernova site | Claudio Balcon image | )

UGC 1436 with SN 2021nv - 2021-02-10 (T+34.6d) Image below (2021-02-10.869) was taken 34.6 days after discovery of 2021nv SN is shown by white cross hairs.  Measured Magnitude +16.9

Annotated CCD Image  (150% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-02-10 21:02 UT (#858029-33) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2021nv (UGC 1436) on Supernovae 2021 Page >>

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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 - 2021-02-10 (T+77.1d) Image below (2021-02-10.899) was taken 77.1 days after discovery of Nova Nova is shown by white cross hairs.  Measured magnitude +15.0

CCD Image (100% size, linear scale, cropped) 4 x 90s exposure (average combine), 3x3 binning, C Filter 2021-02-10 21:40 UT (#858044-47) 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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398P/Boattini - Comet

398P/Boattini (passing through Orion) Sun Distance 1.41 AU (receeding) Earth Distance 0.56 AU (83.4 million km)		398P/Boattini - 2021-02-10, Detail Alias: P/2020 P2 (Boattini) Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra 93.43 arcsec/hr, Dec 53.35 arcsec/hr)
Annotated CCD Image (50% size, square root scale) 3 x 45s exposure (average combine), 3x3 binning, C Filter 2021-02-10 21:51 UT (#858050-52) 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) 7 x 45s exposure (average combine), 3x3 binning, C Filter 2021-02-10 21:54 UT (#858050-58) 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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AT 2021clj - Candidate Nova in M31 (Nova M31 2021-02b?)

AT 2021clj in M31 (Andromeda) AT 2021clj (Type: unk) discovered 2021/02/09.549 UT by XOSS Alias: XN02JR, Nova M31 2021-02b?, PNV J00424827+4119374

M31 with AT 2021clj - 2021-02-10 (T+1.4d) Image below (2021-02-10.927) was taken 1.4 days after discovery of 2021clj Transient (position circled) is fairly faint and difficult to identity Transient in Unconfirmed

Annotated CCD Image  (100% size, log scale) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-02-10 22:24 UT (#858080-84) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

M31 with AT 2021clj - 2021-02-10 (T+1.4d) Image below (2021-02-10.927) was taken 1.4 days after discovery of 2021clj Transient's reported position is shown by white circle.

Annotated CCD Image  (100% size, linear scale) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-02-10 22:24 UT (#858080-84) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

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NGC 684 - Spiral Galaxy with Type II Supernova 2021ass

NGC 684 with SN 2021ass (Triangulum) Spiral Galaxy with Type II Supernova [ Supernovae ] SN 2021ass (Type: II) discovered 2021/01/18.145 UT by ZTF Alias: ZTF21aafepon  (Rochester Supernova site | Giancarlo Cortini image  )

NGC 684 with SN 2021ass - 2021-02-10 (T+23.8d) Image below (2021-02-10.942) was taken 23.8 days after discovery of 2021ass SN is shown by white cross hairs.  Magnitude ?

Annotated CCD Image  (125% size, log scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-02-10 22:46 UT (#858089-93) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2021ass (NGC 684) on Supernovae 2021 Page >>

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AT 2021bhf - Type CV Transient (Unconfirmed)

AT 2021bhf (CV) (Perseus) AT 2021bhf (Type: CV) discovered 2021/01/28.646 UT by XOSS Alias: XM44HT

AT 2021bhf (CV) - 2021-02-10 (T+13.3d) Image below (2021-02-10.958) was taken 13.3 days after discovery of 2021bhf Position of reported CV is shown by white circle. No indication of any object at report position, so the CV is presumed to have quickly faded

Annotated CCD Image  (100% size, linear scale, cropped) 4 x 60s exposure (average combine), 3x3 binning, C Filter 2021-02-10 23:01 UT (#858097-101) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

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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 - 2021-02-10 (T+2.2d) Image below (2021-02-10.965) was taken 2.2 days after discovery of 2021ckv Position of reported YSO Type Transient is shown by white cross-hairs. Measured Magnitude +11.0 (vs normal range of +12.2 to +13.6)

Annotated CCD Image  (50% size, linear scale, cropped) 180s exposure (single frame), 3x3 binning, C Filter 2021-02-10 23:13 UT (#858104) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

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UGC 5760 - Spiral Galaxy with Type II Supernova 2020zoq

UGC 5760 w/SN 2020zoq (Leo) SN 2020zoq (Type II, z=0.0, zhost=0.010040) discovered 2020/11/14.561 by ASAS-SN  (Rochester Supernova site | Discovery Image | )

UGC 5760 w/SN 2020zoq - 2021-02-10 (T+88.4d) Image below (2021-02-10.982) was taken 88.4 days after discovery of 2020zoq SN is shown by white cross hairs.  Measured magnitude ? Relatively poor quality image due to sky conditions

Annotated CCD Image  (125% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-02-10 23:44 UT (#858111-15) 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 >>

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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 - 2021-02-10 (T+12.5d) Image below (2021-02-10.996) was taken 12.5 days after discovery of 2021biz SN shown by white cross hairs.  Measured magnitude +15.7

Annotated CCD Image  (125% size, linear scale, cropped)  4 x 180s exposure (average combine), 3x3 binning, C Filter 2021-02-11 00:04 UT (#858119-22) 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 >>

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UGC 6930 - Spiral Galaxy with Type Ia Supernova 2020rcq

UGC 6930 with SN 2020rcq (Ursa Major) Spiral Galaxy with Type Ia Supernova [ Supernovae ] SN 2020rcq (Type 1a, z=0.002597) discovered 2020/08/09.168 by Zwicky Transient Facility (ZTF)  (Rochester Supernova site | Giancarlo Cortini image | )

UGC 6930 with SN 2020rcq - 2021-02-11 (T+185.8d) Image below (2021-02-11.012) was taken 185.8 days after discovery of 2020rcq SN is shown by white cross hairs.  Measured SN magnitude +16.5

Annotated CCD Image (100% size, square root scale, cropped) 5 x 120s exposure (average combine), 3x3 binning, C Filter 2021-02-11 00:23 UT (#858125-29) 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 >>

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7P/Pons-Winnecke - Comet

7P/Pons-Winnecke (passing through Serpens) Sun Distance 1.74 AU Earth Distance 1.38 AU (207.1 million km) Expected position of comet shown by white circle No indication of comet		7P/Pons-Winnecke - 2021-02-11, Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra 93.13 arcsec/hr, Dec -2.00 arcsec/hr) No indication of comet
Annotated CCD Image (50% size, square root scale) 14 x 45s exposure (average combine), 3x3 binning, C Filter 2021-02-11 00:40 UT (#858133-47) 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) 14 x 45s exposure (average combine), 3x3 binning, C Filter 2021-02-11 00:40 UT (#858133-47) 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 >>

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C/2020 T2 (Palomar) - Comet

C/2020 T2 (Palomar) (passing through Canes Venatici) Sun Distance 2.70 AU Earth Distance 2.07 AU (310.2 million km) Comet indicated by white cross-hairs		C/2020 T2 (Palomar) - 2021-02-11, Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra 29.19 arcsec/hr, Dec 18.07 arcsec/hr)
Annotated CCD Image (50% size, square root scale) 3 x 45s exposure (average combine), 3x3 binning, C Filter 2021-02-11 00:52 UT (#858150-52) 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 2021-02-11 00:58 UT (#858150-64) 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 >>

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SN 2021xn - Type Ia Supernova in PGC 6041

SN 2021xn (Perseus) Faint Galaxy (PGC 6041, SDSS J013751.16+533958.8, catalog mag +16.1) with Type Ia Supernova [ Supernovae ] SN 2021xn (Type: Ia) discovered 2021/01/10.158 UT by ZTF Alias: ZTF21aacvhsc  (Rochester Supernova site | Claudio Balcon image  )

PGC 6041 with SN 2021xn - 2021-02-11 (T+31.9d) Image below (2021-02-11.048) was taken 31.9 days after discovery of 2021xn SN is shown by white cross hairs.  Measured Magnitude +15.7 (magnitude based on WCS link on cropped image using GSC stars) (too many stars for full frame WCS Link using UCAC stars)

Annotated CCD Image  (150% size, log scale, cropped) 180s exposure (single frame), 3x3 binning, C Filter 2021-02-11 01:12 UT (#858168) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2021xn (PGC 6041) on Supernovae 2021 Page >>

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NGC 4041 - Spiral Galaxy (H I-252) with Transient AT 2021cek (Unconfirmed)

NGC 4041 (Ursa Major) NGC 4041 / alias: Herschel I-252 (catalog mag +11.1) Other galaxy in same field of view is PGC 38090 (catalog mag +15.9)

Annotated CCD Image  (50% size, log scale) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-02-11 01:26 UT (#858171-75) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

NGC 4041 with AT 2021cek (Ursa Major) AT 2021cek (Type: unconf) discovered 2021/02/06.501 UT by Akihiro Nakayama Discovery magnitude 16.5  (Rochester Supernova site | TNS 2021cek ) NGC 4041 with AT 2021cek - 2021-02-11 (T+4.6d) Image below (2021-02-11.053) was taken 4.6 days after reported discovery of 2021cek No firm indication of transient in the image below. It is either faint or lies too close to the nucleus to distinguish as a distinct object. Transient is unconfirmed.

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

Negative CCD Image  (100% size, log scale, cropped) Image details as above

Images of AT 2021cek (NGC 4041) on Transients 2021 Page >>

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NGC 4151 - Spiral Galaxy with AGN Outburst

NGC 4151 with AT 2021baf (Canes Venatici) AT 2021baf (Type: AGN) discovered 2021/01/22.151 UT by Gaia Alias: Gaia21aki (Gaia alert came when AGN reached mag +12.2)  ( Gaia21aki  )

NGC 4151, Seyfet Galaxy - 2021-02-11 (T+19.9d) Image below (2021-02-11.068) was taken 19.9 days after discovery of 2021baf Measured magnitude +11.7 (nucleus)

CCD Image  (100% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-02-11 01:47 UT (#858178-82) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

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UGCA 275 - Irregular Galaxy (PGC 39146)

UGCA 275 (Virgo) Alias: PGC 39146 (catalog mag +15.8) UGCA 275 (position indicated by white circle) is very faint.  [  UGCA Galaxies, Irregular Galaxies ] Other galaxies in same field of view NGC 4207 (catalog mag +12.9 or +13.6) IC 3071 (catalog mag ?)

Annotated CCD Image  (50% size, square root scale) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-02-11 02:07 UT (#858185-89) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

UGCA 275 - Detail

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

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

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UGCA 279 - Elliptical Galaxy (PGC 40339)

UGCA 279 (Virgo) Alias: PGC 40339 (Catalog mag +15.6  [ UGCA Galaxies ] Other galaxies in same field of view PGC 40404 & 40405 (catalog mag +16.5) PGC 1266425 (catalog mag +18.5)

Annotated CCD Image  (50% size, square root scale) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-02-11 02:29 UT (#858192-96) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

UGCA 279 - Detail

CCD Image  (125% size, square root scale, cropped) Image details as above

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

UGC 5829 with LBV2021blu (Leo Minor) AT 2021blu (Type: LBV) discovered 2021/02/01.467 UT by ATLAS Alias: ATLAS21dic, ZTF21aagppzg  [ Irregular Galaxies ] LBV is indicated by white cross-hairs

Annotated CCD Image  (50% size, square root scale) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-02-11 03:03 UT (#858205-09) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

UGC 5829 with LBV 2021blu - 2021-02-11 (T+9.7d) Image below (2021-02-11.120) was taken 9.7 days after discovery of 2021blu LBV is indicated by white cross-hairs. Measured magnitude +16.4

Annotated CCD Image  (100% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-02-11 03:03 UT (#858205-09) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

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

UGC 5829 - Earlier Image (2004)

CCD  Image, 5 x 60 sec exposure (median combine) 2004-03-28 22:27 h UT (#64064-68) 8" LX200 + ST-7E

Images of LBV 2021blu  (UGC 5829) on Transients 2021 Page >>

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UGCA 262 - Spiral Galaxy (PGC 37862)

UGCA 262 (Ursa Major) Alias: PGC 37862 (catalog mag +17.6)  [ UGCA Galaxies ] Other galaxies in same field of view PGC 2302468 (catalog mag +17.5), PGC 2303775 (catalog mag +17.6), PGC 2303818 (catalog mag +17.9),  PGC 2305424 (catalog mag +18.1)

Annotated CCD Image  (50% size, square root scale) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-02-11 03:26 UT (#858213-17) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

UGCA 262 - Detail

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

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NGC 4145A - Spiral Galaxy (UGC 7175, VV 814), 1.29 Gly

NGC 4145A (Canes Venatici) Alias: UGC 7175, VV 814 Distance 1.29 Gyr, z=0.0980 [ Distant Galaxies ]

Annotated CCD Image (50% size, square root scale) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-02-11 03:47 UT (#858220-24) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

NGC 4145A - Detail

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

VV 814 - Detail

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

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UGCA 289 - Spiral Galaxy (PGC 41965)

UGCA 289 (Virgo) Alias: PGC 41965 (catalog mag +14.9)  [ UGCA Galaxies ] Other galaxies in same field of view: PGC 1010646 (catalog magnitude +16.1), PGC 1010602 (catalog mag +17.9)

Annotated CCD Image (50% size, square root scale) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-02-11 04:10 UT (#858228-32) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

UGCA 289 - Detail

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

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NGC 4775 - Spiral Galaxy (UGCA 306)

NGC 4775 (Virgo) Alias: UGCA 306 (catalog mag +11.1 or +12.2)  [ UGCA Galaxies ] Other galaxies in same field of view:  PGC 1030299 (catalog magnitude +16.3), PGC 1029832 (catalog mag +18.0)

Annotated CCD Image (50% size, square root scale) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-02-11 04:32 UT (#858235-39) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

NGC 4775 - Detail

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

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

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UGC 9083 - Spiral Galaxy / Transient AT 2021buk

UGC 9083  & AT 2021buk (Bootes) AT 2021buk (Type: unk) discovered 2021/02/04.453 UT by ZTF Alias: ZTF21aagysdv The position of the reported transient is shown by white circle in image below. The 3.0' offset between transient and UGC 9083 (only 0.8' x0.6' in size) seems too large for UGC 9083 to be the host galaxy of AT 2021buk. The bright 'star' object in the upper righthand side of the image is the double star Struve 1814. Other galaxies in same field of view are  PGC 2363919 (catalog magnitude +16.9), PGC 2364806 (catalog mag +17.9)

Annotated CCD Image (50% size, square root scale) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-02-11 04:32 UT (#858235-39) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

UGC 9083  & AT 2021buk - 2021-02-11 (T+6.7d) Image below (2021-02-11.198) was taken 6.7 days after discovery of transient AT 2021buk

Annotated CCD Image (125% size, linear scale, cropped) Image details as above

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Struve 1814 - Double Star (WDS STF 1814)

Struve 1814 (Bootes) Spiral galaxy UGC 9083 lies 4' 53" away

Annotated CCD Image (100% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-02-11 04:32 UT (#858235-39) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 [ Full Frame 70% size ]

Struve 1814 - Detail Note : Slight blooming streak on the brighter, left hand star. Measured separation 14 arc sec

Annotated CCD Image (150% size, linear scale, cropped) Image details as above

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UGC 7125 - Spiral Galaxy (PGC 38567)

UGC 7125 (Canes Venatici) Alias: PGC 38567 (catalog mag +15.1) Flat Galaxy Atlas  [ Flat Galaxies ] Other galaxies in same field of view are PGC 38604 (catalog mag +16.4), PGC 2086796 (catalog mag +17.2), PGC 2085982 (catalog mag +17.4), PGC 2088590 (catalog mag +17.9), PGC 2087279 (catalog mag +18.4),  PGC 2086609 (catalog mag +18.5),   PGC 2086113 (catalog +18.7)

Annotated CCD Image (50% size, square root scale) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-02-11 05:17 UT (#858250-54) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

UGC 7125 - Detail

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

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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 - 2021-02-11 (T+12.7d) Image below (2021-02-11.229) was taken 12.7 days after discovery of 2021biy LRN shown by white cross hairs.  Measured magnitude +16.6

Annotated CCD Image  (100% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-02-11 05:39 UT (#858257-61) 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 >>

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