David's Astronomy Pages CCD Images - Session 861 (2021-02-22)

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Session Notes

Nova Per 2020 - Nova (V1112 Per, AT 2020abap)     AT 2021rl - BL Type Transient (QSO 0954+658) AT 2021ckv - Type YSO Transient  (GCVS PR Ori) AT 2021dbp - Type CV Transient     NGC 304 - Spiral Galaxy with Type Ia Supernova 2021dnn     UGC 784 - Spiral Galaxy with Type Ia Supernova 2021pc UGC 1436 - Spiral Galaxy with Type Ia Supernova 2021nv UGC 2505 - Irregular Galaxy with Type II Supernova 2021bge       - SN 2021xn & C/2019 L3 (ATLAS) attempts failed (poor quality sky)     Variable Stars (photometric monitoring) - SY Cnc, U Gem, DY Per, GK Per     Nearby Stars (astrometric monitoring) - DX Cnc, Groombridge 34

- Evening session (4.5 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/showers allowed - 12" LX200 + ST-10XME for imaging - TS 80mm APO + ZWO ASI178MC for guiding & imaging - Ambient Temperature: 4.5°C (min) - CCD Temperature:  -20°C - Notes from 2021-02-22 >>    [ Local Files >> ]   -

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 - 2021-02-22 (T+89.0d) Image below (2021-02-22.811) was taken 89.0 days after discovery of of Nova Nova is shown by white cross hairs.  Measured magnitude +15.3

CCD Image (100% size, linear scale, cropped) 5 x 90s exposure (average combine), 3x3 binning, C Filter 2021-02-22 19:32 UT (#861011-15) 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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AT 2021rl - BL Type Transient (QSO 0954+658)

AT 2021rl (Ursa Major) BL Type Transient, QSO 0954+658, 6C 095456+654857 AT 2021rl (Type: BL) discovered 2021/01/06.449 UT by Gaia Alias: Gaia21acz

AT 2021rl - 2021-02-22 (T+47.5d) Image below (2021-02-22.914) was taken 47.5 days after discovery of 2021rl BL Type object shown by white cross hairs. Measured magnitude +13.5  (vs catalog mag of +15.5)

Annotated CCD Image  (100% size, linear scale, cropped) 3 x 180s exposure (average combine), 3x3 binning, C Filter 2021-02-22 22:02 UT (#861089-91) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2021rl - Earlier Image (2021-02-17, T+41.6d) Image below (2021-02-17.065) was taken 41.6 days after discovery of 2021rl BL Type object shown by white cross hairs. Measured magnitude +14.2  (vs catalog mag of +15.5)

Annotated CCD Image  (100% size, linear scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-02-17 01:43 UT (#859200-04) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2021rl - Earlier Image (2021-02-02, T+26.6d) Image below (2021-02-02.002) was taken 26.6 days after discovery of 2021rl BL Type object shown by white cross hairs. Measured magnitude +14.3  (vs catalog mag of +15.5)

Annotated CCD Image  (100% size, linear scale, cropped) 180s exposure (single frame), 3x3 binning, C Filter 2021-02-02 00:06 UT (#857195) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2021rl - Earlier Image (2021-01-24, T+17.6d) Image below (2021-01-24.013) was taken 17.6 days after discovery of 2021rl BL Type object shown by white cross hairs.  Measured magnitude +14.1  (vs catalog mag of +15.5)

Annotated CCD Image  (100% size, linear scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-01-24 00:28 UT (#854245-49) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2021rl  (QSO 0954+658) on Type BL Transients Page >>

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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 [ Gaia21arx ]   [ YSO Transients ]

AT 2021ckv / PR Ori - 2021-02-22 (T+14.1d) Image below (2021-02-22.822) was taken 14.1 days after discovery of 2021ckv Position of reported YSO Type Transient is shown by white cross-hairs. Measured Magnitude +11.1 (vs normal range of +12.2 to +13.6)

Annotated CCD Image  (50% size, linear scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-02-22 19:52 UT (#861020-24) 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 >>

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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 - 2021-02-22 (T+8.4d) Image below (2021-02-22.928) was taken 8.4 days after discovery of 2021dbp CV is shown by white cross hairs.  Measured Magnitude +10.8 vs GSC magnitude  +10.2

Annotated CCD Image  (100% size, linear scale, cropped) 3 x 60s exposure (average combine), 3x3 binning, C Filter 2021-02-22 22:21 UT (#861099-101) 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 >>

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NGC 304 - Spiral Galaxy with Type Ia Supernova 2021dnn

NGC 304 with SN 2021dnn (Andromeda) [ Supernovae 2021 ] SN 2021dnn (Type: Ia) discovered 2021/02/22.225 UT by ATLAS Magnitude +18.3 at discovery Alias: ZTF21aabpszb, Gaia21adm  (Rochester Supernova site | TNS | )

NGC 304   Other galaxies in same field of view :  PGC 3302(catalog mag +15.7)

Annotated CCD Image  (50% size, square root scale, cropped) 4 x 180s exposure (average combine), 3x3 binning, C Filter 2021-02-22 20:21 UT (#861038-41) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

NGC 304 with SN 2021dnn - 2021-02-22 (T+0.6d) Image below (2021-02-22.840) was taken 0.6 days after discovery of 2021dnn SN is shown by white cross hairs.

Annotated CCD Image  (150% size, square root scale, cropped) 4 x 180s exposure (average combine), 3x3 binning, C Filter 2021-02-22 20:21 UT (#861038-41) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2021dnn (NGC 304) on Supernovae 2021 Page >>

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UGC 784 - Spiral Galaxy with Type Ia Supernova 2021pc

UGC 784 with SN 2021pc Cetus) [ Supernovae 2021 ] SN 2021pc (Type: Ia) discovered 2021/01/07.160 UT by ZTF Magnitude +18.3 at discovery Alias: ZTF21aabpszb, Gaia21adm  (Rochester Supernova site | TNS | )

UGC 784 with SN 2021pc - 2021-02-22 (T+46.6d) Image below (2021-02-22.797) was taken 46.6 days after discovery of 2021pc Very poor quality image. SN is shown by white cross hairs.  Unable to measure SN magnitude

Annotated CCD Image  (125% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-02-22 19:16 UT (#861004-08) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2021pc (UGC 784) on Supernovae 2021 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 - 2021-02-22 (T+46.6d) Image below (2021-02-22.855) was taken 46.6 days after discovery of 2021nv SN position is shown by white cross hairs.  SN & UG 1436 barely visible above bright sky background

Annotated CCD Image  (150% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-02-22 20:40 UT (#861045-49) 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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UGC 2505 - Irregular Galaxy with Type II Supernova 2021bge

UGC 2505 with SN 2021bge (Cetus) SN 2021bge (Type: II) discovered 2021/01/27.517 UT by Koichi Itagaki Alias: ATLAS21dfn, Gaia21aqd Discovery Magnitude 16.8 (Clear Filter) vs Prior Non-Detection in DSS Image Confirmed SN II  ( Rochester Supernova site | Discovery Image  ) ( TNS 2021bge | Gaia21aqd )

UGC 2505 with SN 2021bge - 2021-02-22 (T+26.4d) Image below (2021-02-22.872) was taken 26.4 days after discovery of 2021bge SN position is shown by white circle  Magnitude ? Poor quality image.

Annotated CCD Image  (125% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-02-22 21:04 UT (#861053-57) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2021bge (UGC 2505) on Supernovae 2021 Page >>

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