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CCD Images - Session 863 (2021-02-25)
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Objects Session Notes
398P/Boattini - Comet C/2019 L3 (ATLAS) - Comet 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 CGCG 264-017 - Galaxy (PGC 24798) with Type Ia SN 2021bjy NGC 304 - Spiral Galaxy with Type Ia Supernova 2021dnn NGC 4041 - Spiral Galaxy (H I-252) with AT 2021cek (Unconfirmed) SN 2021xn - Type Ia Supernova in PGC 6041 UGC 3502 - Spiral Galaxy with Type Ia Supernova 2021cwc Variable Stars (photometric monitoring) - U Gem, RZ LMi, DY Per, RR Tau Nearby Stars (astrometric monitoring) - DX Cnc, LAMOST-HVS1, Scholz's Star
- Night session (5.7 hours) - Main aims of the session were to acquire a selection of variable star, nearby star and comet targets and deep sky targets as conditions allowed. - 12" LX200 + ST-10XME for imaging - TS 80mm APO + ZWO ASI178MC for guiding & imaging - Ambient Temperature: 2°C (min) - CCD Temperature: -20°C/-25°C - Notes from 2021-02-25 >> [ Local Files >> ] -
| 398P/Boattini (passing through Cancer) Sun Distance 1.48 AU (receeding) Earth Distance 0.69 AU (102.5 million km) Comet position indicated by white circle |
398P/Boattini - 2021-02-25, Detail Alias: P/2020 P2 (Boattini) Autoguided on offset star. Comet's rate of motion (Ra 97.94 arcsec/hr, Dec 28.78 arcsec/hr) Comet very faint, indicated by white cross-hairs |
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| Annotated CCD Image (50% size, square root scale) 3 x 45s exposure (average combine), 3x3 binning, C Filter 2021-02-25 22:51 UT (#863098-100) 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) Image details as left |
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| Images of 398P/Boattini on Comets 2020 Page >> |
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| C/2019 L3 (ATLAS) (passing through Cassiopeia) Sun Distance 4.55 AU (approaching) Earth Distance 4.78 AU (714.7 million km) |
C/2019 L3 (ATLAS) - 2021-02-25, Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra 59.29 arcsec/hr, Dec -7.10 arcsec/hr) |
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| Annotated CCD Image (50% size, square root scale) 3 x 45s exposure (average combine), 3x3 binning, C Filter 2021-02-25 22:00 UT (#863065-67) 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) 6 x 45s exposure (average combine), 3x3 binning, C Filter 2021-02-25 22:02 UT (#863065-71) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
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| Images of C/2019 L3 (ATLAS) on Comets 2020 Page >> |
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| 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 - 2021-02-25 (T+92.0d) Image below (2021-02-25.840) was taken 92.0 days after discovery of of Nova Nova is shown by white cross hairs. Measured magnitude +15.3 (fading) |
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| CCD Image (100% size, linear scale, cropped) 4 x 90s exposure (average combine), 3x3 binning, C Filter 2021-02-25 20:13 UT (#863006-09) 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 (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 - 2021-02-26 (T+50.6d) Image below (2021-02-26.033) was taken 50.6 days after discovery of 2021rl BL Type object shown by white cross hairs. Measured magnitude +13.8 (fading) |
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| Annotated CCD Image (100% size, linear scale, cropped) 4 x 180s exposure (average combine), 3x3 binning, C Filter 2021-02-26 00:56 UT (#863167-70) 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 / 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 - 2021-02-25 (T+17.1d) Image below (2021-02-25.849) was taken 17.1 days after discovery of 2021ckv Position of reported YSO Type Transient is shown by white cross-hairs. Measured Magnitude +11.5 (fading) (vs normal range of +12.2 to +13.6) |
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| Annotated CCD Image (50% size, linear scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-02-25 20:31 UT (#863013-17) 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 (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 - 2021-02-25 (T+11.3d) Image below (2021-02-25.878) was taken 11.3 days after discovery of 2021dbp CV is shown by white cross hairs. Measured Magnitude +10.95 (fading) vs GSC magnitude +10.2 |
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| Annotated CCD Image (100% size, linear scale, cropped) 3 x 60s exposure (average combine), 3x3 binning, C Filter 2021-02-25 21:08 UT (#863029-32) 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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| CGCG 264-017 with SN 2021bjy (Ursa Major) SN 2021bjy (Type Ia, zhost=0.02749) discovered 2021/01/30.481 UT by ATLAS Alias: ATLAS21dgz ( Rochester Supernova site | Odd Trondal image ) [ Supernovae 2021 ] |
| CGCG 264-017 with SN 2021bjy - 2021-02-25 (T+26.5d) Image below (2021-02-25.980) was taken 26.5 days after discovery of 2021bjy SN is indicated by white cross-hairs. Measured magnitude ? (faint) |
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| Annotated CCD Image (150% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-02-25 23:40 UT (#863131-35) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| Images of SN 2021bjy (CGCG 264-017) on Supernovae 2021 Page >> |
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| 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 with SN 2021dnn - 2021-02-25 (T+3.7d) Image below (2021-02-25.894) was taken 3.7 days after discovery of 2021dnn SN position is shown by white cross hairs. Poor quality image - SN is not clearly resolved |
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| Annotated CCD Image (150% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-02-25 21:36 UT (#863047-51) 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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| NGC 4041 with AT 2021cek (Ursa Major) AT 2021cek (Type: unconf) discovered 2021/02/06.501 UT by Akihiro Nakayama NGC 4041 with AT 2021cek - 2021-02-26 (T+19.5d) Image below (2021-02-26.047) was taken 19.5 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 again unconfirmed. |
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| CCD Image (100% size, log scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-02-26 01:16 UT (#863174-78) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| NGC 4041 with AT 2021cek - Earlier Image (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. |
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| CCD Image (100% size, log scale, cropped) 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 |
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| Negative CCD Image (100% size, log scale, cropped) Image details as above |
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| 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 - 2021-02-25 (T+46.8d) Image below (2021-02-25.926) was taken 46.8 days after discovery of 2021xn SN is shown by white cross hairs. Measured Magnitude +16.3 (SN) (magnitude based on WCS link on cropped image using GSC stars with x3 scale, too many stars for full frame WCS Link using UCAC stars) |
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| Annotated CCD Image (150% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-02-25 22:22 UT (#863076-80) 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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| 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 - 2021-02-26 (T+12.6d) Image below (2021-02-26.001) was taken 12.6 days after discovery of 2021cwc SN is shown by white cross hairs. Measured Mag ? (SN too faint to extract object properties using sextractor) |
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| Annotated CCD Image (150% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-02-26 00:12 UT (#863148-52) 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 >> |
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| This Web Page: | CCD Images - Session 863 (2021-02-25) |
| Last Updated : | 2024-05-27 |
| Site Owner : | David Richards |
| Home Page : | David's Astronomy Web Site |
