David's Astronomy Pages CCD Images - Session 867 (2021-03-05)

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Nova Per 2020 - Nova (V1112 Per, AT 2020abap) NGC 304 - Spiral Galaxy with Type Ia Supernova 2021dnn UGC 2505 - Irregular Galaxy with Type II Supernova 2021bge UGC 1436 - Spiral Galaxy with Type Ia Supernova 2021nv AT 2021dbp - Type CV Transient AT 2021bkv - Type CV Transient  (GCVS HV Aur) AT 2021ckv - Type YSO Transient  (GCVS PR Ori) AT 2021elr - Type CV Transient, Candidate Be Star NGC 2903 - Spiral Galaxy (Herschel I-56) UGCA 308 - Irregular Galaxy (PGC 44042) IC 992 - Spiral Galaxy with Type Ic Supernova 2021dwg UGC 3502 - Spiral Galaxy with Type Ia Supernova 2021cwc NGC 4227 - Spiral Galaxy with Type Ia Supernova 2021biz CGCG 056-009 - Galaxy with Type Ia Supernova 2021apf     Variable Stars (photometric monitoring) - R CrB, Nova Per 2020, RR Tau,     Nearby Stars (astrometric monitoring) - Barnards Star, DX Cnc, Scholz's Star

- All Night session (9.7 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/showers allowed and to test stability of AstroMain 3.38 -   - 12" LX200 + ST-10XME for imaging - TS 80mm APO + ZWO ASI178MC for guiding & imaging - Ambient Temperature: -2.5°C (min) - CCD Temperature:  -20°C - Notes from 2021-03-05 >>    [ 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 - 2021-03-05 (T+100.0d) Image below (2021-03-05.826) was taken 100.0 days after discovery of nova Nova is shown by white cross hairs.  Measured magnitude +15.2 (brightening)

CCD Image (100% size, linear scale, cropped) 5 x 90s exposure (average combine), 3x3 binning, C Filter 2021-03-05 19:55 UT (#867004-08) 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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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 with SN 2021dnn - 2021-03-05 (T+11.6d) Image below (2021-03-05.836) was taken 11.6 days after discovery of 2021dnn SN is shown by white cross hairs.  Measured magnitude ? (unable to resolve SN using CCDSoft/Sextractor)

Annotated CCD Image  (150% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-03-05 20:13 UT (#867011-15) 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 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  ( Rochester Supernova site | Discovery Image  )

UGC 2505 with SN 2021bge - 2021-03-05 (T+37.3d) Image below (2021-03-05.851) was taken 37.3 days after discovery of 2021bge SN position is shown by white circle  Measured Magnitude +16.7 (fading)

Annotated CCD Image  (125% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-03-05 20:36 UT (#867020-24) 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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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 - 2021-03-05 (T+57.6d) Image below (2021-03-05.874) was taken 57.6 days after discovery of 2021nv SN position 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 2021-03-05 21:09 UT (#867040-43) 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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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 - 2021-03-05 (T+19.4d) Image below (2021-03-05.888) was taken 19.4 days after discovery of 2021dbp CV is shown by white cross hairs.  Measured Magnitude +10.95 (fading)

Annotated CCD Image  (100% size, linear scale, cropped) 4 x 60s exposure (average combine), 3x3 binning, C Filter 2021-03-05 21:22 UT (#867047-50) 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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AT 2021bkv - Type CV Transient (GCVS HV Aur)

AT 2021bkv (CV) (Auriga) AT 2021bkv (Type: CV) discovered 2021/01/31.675 UT by XOSS Alias: XM48HT  ( Rochester Supernova site  )

AT 2021bkv (CV) - 2021-03-05 (T+33.2d) Image below (2021-03-05.897) was taken 33.2 days after discovery of 2021bkv Reported position of CV is shown by white circle.  No obvious indication of an object at the reported position.  Transient is therefore unconfirmed  (CV may have faded to be at or below the limiting magnitude of image)

Annotated CCD Image  (100% size, linear scale, cropped) 5 x 60s exposure (average combine), 3x3 binning, C Filter 2021-03-05 21:34 UT (#867053-57) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2021bkv / HV Aur Detailed inspection of the image shows a faint stellar object at the position of HV Aur in the following enlarged negative display. This would seem to confirm that the AT 2021bkv transient has faded back to its normal magnitude

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

Images of AT 2021bkv on Type CV 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 - 2021-03-05 (T+25.1d) Image below (2021-03-05.905) was taken 25.1 days after discovery of 2021ckv Position of reported YSO Type Transient is shown by white cross-hairs. Measured Magnitude +11.2 (brightening)

Annotated CCD Image  (50% size, linear scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-03-05 21:53 UT (#867060-64) 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 2021elr - Type CV Transient (discovered 2021-03-03), Candidate Be Star

AT 2021elr (Monoceros) AT 2021elr (Type: CV) discovered 2021/03/03.586 UT by Gaia Alias: Gaia21bev  ( Rochester Supernova site |  Gaia21bev ) Candidate Be star CoRoT 102656190 brightens by 0.2 mag Transient triggererd at alerting magnitude of +13.78 Historic magnitude +13.95 UCAC2 star magnitude +13.80

AT 2021elr (CV) - 2021-03-05 (T+2.3d) Image below (2021-03-05.919) was taken 2.3 days after discovery of 2021elr CV is shown by white cross hairs.  Measured Magnitude +13.9

Annotated CCD Image  (100% size, linear scale, cropped) 5 x 60s exposure (average combine), 3x3 binning, C Filter 2021-03-05 22:08 UT (#867067-71) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2021elr on Type CV Transients Page >>

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NGC 2903 - Spiral Galaxy (Herschel I-56)

NGC 2903 (Leo) Alias : Herschel I-56, Hidden Treasures 51   [ Herschel 400 Objects ] [ Hidden Treasures ]

CCD Image  (50% size, square root scale) 4 x 120s exposure (average combine), 3x3 binning, C Filter 2021-03-05 23:05 UT (#867106-09) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Negative CCD Image  (50% size, square root scale) Image details as above

False Colour CCD Image  (50% size, square root scale) Inverse Spectrum Image details as above

NGC 2903 - Earlier Image (2011)

CCD Image (cropped) 2 x 120s exposure (average combine), 3x3 binning, C Filter 2011-02-26 23:16 h UT  (#458189-90) 12" LX200R  (at f/9.7) + ST-10XME

NGC 2903 - Earlier Image (2004)

CCD Image 12x10s (average combine), 2x2 binning, C Filter 2004-02-19  21:45 to 22:27h UT (#58171-202) 8" LX200 Classic + ST-7E

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UGCA 308 - Irregular Galaxy (PGC 44042)

UGCA 308 (Virgo) Alias: PGC 44042  [ UGCA Galaxies , Irregular Galaxies ]

Annotated CCD Image  (50% size, square root scale) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-03-06 01:52 UT (#867122-26) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

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

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

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IC 992 - Spiral Galaxy with Type Ic Supernova 2021dwg

IC 992 with SN 2021dwg (Virgo) SN 2021dwg (Type: Ic) discovered 2021/02/27.420 UT by ZTF Alias: ZTF21aannoix Magnitude +18.44 at discovery  (Rochester Supernova site )

IC 992 with SN 2021dwg - 2021-03-06 (T+6.7d) Image below (2021-03-06.086) was taken 6.7 days after discovery of 2021dwg SN shown by white cross-hairs. Measured magnitude +17.6

Annotated CCD Image  (125% size, square root scale, cropped) 3 x 180s exposure (average combine), 3x3 binning, C Filter 2021-03-06 02:10 UT (#867130-32) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2021dwg (IC 992) on Supernovae 2021 Page >>

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UGC 3502 - Spiral Galaxy with Type Ia Supernova 2021cwc

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 - 2021-03-06 (T+20.7d) Image below (2021-03-06.102) was taken 20.7 days after discovery of 2021cwc SN is shown by white cross hairs.    Measured Mag ? (unable to resolve SN properties using sextractor)

Annotated CCD Image  (150% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-03-06 02:36 UT (#867138-42) 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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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 - 2021-03-06 (T+35.6d) Image below (2021-03-06.117) was taken 35.6 days after discovery of 2021biz SN shown by white cross hairs.  Measured magnitude +16.4 (fading)

Annotated CCD Image (125% size, square root scale, cropped) 4 x 180s exposure (average combine), 3x3 binning, C Filter 2021-03-06 02:56 UT (#867146-49) 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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CGCG 056-009 - Galaxy with Type Ia Supernova 2021apf

CGCG 056-009 with SN 2021apf (Ophiuchus) SN 2021apf (Type Ia, z=0.006531) discovered 2021/01/16.557 UT by ZTF Alias: ZTF21aafdxca  (Rochester Supernova site | Fabio Feijo image | )

CGCG 056-009 with SN 2021apf - 2021-03-06 (T+48.7d) Image below (2021-03-06.216) was taken 48.7 days after discovery of 2021apf SN is shown by white cross hairs.   Measured magnitude ?

Annotated CCD Image  (150% size, square root scale, cropped) 180s exposure (single frame), 3x3 binning, C Filter 2021-03-06 05:14 UT (#867170) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2021apf (CGCG 056-009) on Supernovae 2021 Page >>

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