David's Astronomy Pages CCD Images - Session 852 (2021-01-18)

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Session Notes

NGC 684 - Spiral Galaxy with Type II Supernova 2021ass UGC 1436 - Spiral Galaxy with Type Ia Supernova 2021nv Nova Per 2020 - Nova (V1112 Per, AT2020abap) AT2021apb - CV Transient UGCA 140 - Spiral Galaxy (PGC 23834) NGC 2782 - Spiral Galaxy with Type Ia Supernova 2020scc UGC 6930 - Spiral Galaxy with Type Ia Supernova 2020rcq NGC 4414 - Spiral Galaxy with Type Ia Supernova 2021J UGCA 336 - Spiral Galaxy (PGC 45882) SN 2021xn - Type Ia Supernova in PGC 6041 AT2021acn - AGN Type Transient (Unconfirmed) UGCA 249 - Irregular Galaxy (PGC 37202) NGC 4742 - Elliptical Galaxy (UGCA 303) UGCA 228 - Spiral Galaxy (PGC 34006) NGC 4454 - Spiral Galaxy with Type Ia Supernova 2020abgq NGC 5331 - Spiral Galaxy with Type Ia Supernova 2020abir UGCA 271 - Irregular Galaxy (PGC 38481) Satellite NGC 4145 - Spiral Galaxy MCG +6-30-84 - Galaxy (PGC 48870) with Type Ia Supernova 2021K PGC 48887 - Spiral Galaxy     Variable Stars (photometric monitoring) - AM CVn, SY Cnc, R CrB, SS Her, U Her, ER UMa     Nearby Stars (astrometric monitoring) - DX Cnc, LAMOST-HVS1, CN Leo

- All Night session (8.2 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: -3°C (min) - CCD Temperature:  -20/-35°C - Notes from 2021-01-18 >>      -

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 - 2021-01-18 (T+0.8d)

Annotated CCD Image  (50% size, square root scale) 3 x 180s exposure (average combine), 3x3 binning, C Filter 2021-01-18 22:55 UT (#852004-07) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

NGC 684 with SN 2021ass - 2021-01-18 (T+0.8d) Image below (2021-01-18.949) was taken 0.8 days after discovery of 2021ass SN is shown by white cross hairs.  Magnitude ?

Annotated CCD Image  (125% size, square root scale, cropped) 3 x 180s exposure (average combine), 3x3 binning, C Filter 2021-01-18 22:55 UT (#852004-07) 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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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 - 2021-01-18 (T+11.7d) Image below (2021-01-18.965) was taken 11.7 days after discovery of 2021nv SN is shown by white cross hairs.  Measured Magnitude +16.3

Annotated CCD Image  (150% size, square root scale, cropped) 4 x 180s exposure (average combine), 3x3 binning, C Filter 2021-01-18 23:20 UT (#852012-16) 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, AT2020abap)

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 AT2020abap (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 - 2021-01-18 (T+54.2d) Image below (2021-01-18.979) was taken 54.2 days after discovery of Nova Nova is shown by white cross hairs.  Measured magnitude +13.5

CCD Image (100% size, linear scale, cropped) 4 x 90s exposure (average combine), 3x3 binning, C Filter 2021-01-18 23:35 UT (#852019-23) 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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AT2021apb - CV Transient

AT2021apb (CV)  (Cassiopeia) AT2021apb (Type: CV) discovered 2021/01/15.584 UT by Gaia Alias: Gaia21agx

AT2021apb (CV) - 2021-01-18 (T+3.4d) Image below (2021-01-18.990) was taken 3.4 days after discovery of 2021apb ? Candidate CV is shown by white cross hairs.   Measured magnitude +16.8 vs catalog mag +15.0

CCD Image (100% size, linear scale, cropped) 5 x 60s exposure (average combine), 3x3 binning, C Filter 2021-01-18 23:49 UT (#852027-31) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

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UGCA 140 - Spiral Galaxy (PGC 23834)

UGCA 140 (Lynx) Alias: PGC 23834 (catalog mag +15.1) [ UGCA Galaxies ] Other galaxy in same field of view   PGC 23803 (catalog mag +16.9) Bright star with slight blooming streak is HIP 41651 (mag +8.6)

Annotated CCD Image (50% size, square root scale) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-01-19 00:12 UT (#852034-38) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

UGCA 140 -  Detail

CCD Image (150% size, square root scale, cropped) Image details as above

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NGC 2782 - Spiral Galaxy (ARP 215) with Type Ia Supernova 2020scc

NGC 2782 with SN 2020scc (Lynx) SN 2020scc (Type Ia, z=0.008483) discovered 2020/08/20.915 by Xingming Observatory Sky Survey (XOSS)  ( Rochester Supernova site | Discovery image | )

NGC 2782 with SN 2020scc - 2021-01-19 (T+151.1d) Image below (2021-01-19.017) was taken 151.1 days after discovery of 2020scc SN is shown by white cross hairs.  SN is to faint to get a magnitude measurement, but is still visible

Annotated CCD Image (100% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-01-19 00:33 UT (#852042-46) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2020scc (NGC 2782) on Supernovae 2020 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 - 2021-01-19 (T+162.9d) Image below (2021-01-19.031) was taken 162.9 days after discovery of 2020rcq SN is shown by white cross hairs.  Measured SN magnitude +16.15

Annotated CCD Image (100% size, square root scale, cropped) 5 x 120s exposure (average combine), 3x3 binning, C Filter 2021-01-19 00:50 UT (#852048-52) 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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NGC 4414 - Spiral Galaxy with Type Ia Supernova 2021J

NGC 4414 (Coma Berenices) SN 2021J (Type Ia, z=0.0024) discovered 2021/01/01.489 UT by ZTF Alias: ZTF21aaabvit Mag +13.97 at discovery  (Rochester Supernova site | Jean-Claude Merlin image | )

NGC 4414 with SN2021J - 2021-01-19 (T+17.6d) Image below (2021-01-19.056) was taken 17.6 days after discovery of 2021J 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 2021-01-19 01:29 UT (#852067-71) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2021J (NGC 4414) on Supernovae 2021 Page >>

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UGCA 336 - Spiral Galaxy (PGC 45882)

UGCA 336 (Canes Venatici) Alias: PGC 45882 (catalog mag +16.7) [ UGCA Galaxies ] Other faint galaxy in same field of view    PGC 2181732 (catalog mag +17.1)

Annotated CCD Image (50% size, square root scale) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-01-19 01:51 UT (#852074-78) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

UGCA 336 -  Detail

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

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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 - 2021-01-19 (T+8.9d)

Annotated CCD Image  (50% size, square root scale) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-01-19 02:16 UT (#852082-86) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

PGC 6041 with SN 2021xn - 2021-01-19 (T+8.9d) Image below (2021-01-19.088) was taken 8.9 days after discovery of 2021xn SN is shown by white cross hairs.  Magnitude ?

Annotated CCD Image  (150% size, log scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-01-19 02:16 UT (#852082-86) 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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AT2021acn - AGN Type Transient (Unconfirmed)

AT2021acn (Gemini) AT2021acn (Type: AGN) discovered 2021/01/11.194 UT by AHTS Alias: AHTS-2021-001, ZTF19aaeidsm  (Rochester Supernova site )

AT2021acn - 2021-01-19 (T+7.9d) Image below (2021-01-19.103) was taken 7.9 days after reported discovery of 2021acn Area with reported AGN is shown by white circle.  No indication of any object at reported discovery poosition. The transient AT2021acn is unconfirmed

Annotated CCD Image  (150% size, log scale, cropped) 4 x 180s exposure (average combine), 3x3 binning, C Filter 2021-01-19 02:36 UT (#852090-93) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

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UGCA 249 - Irregular Galaxy (PGC 37202)

UGCA 249 (Virgo) Alias: PGC 37202 (catalog mag +14.8) [ UGCA Galaxies , Irregular Galaxies ] Other galaxies in field of view are PGC 1068326 (catalog mag +18.4), PGC 1068828 (catalog mag +18.6)

CCD Image (50% size, square root scale) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-01-19 03:34 UT (#852143-47) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

UGCA 249 - 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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NGC 4742 - Elliptical Galaxy (UGCA 303)

NGC 4742 (Virgo) Alias: UGCA 303 (Catalog mag +11.3 or +12.4)  [ UGCA Galaxies ] Other faint galaxy in field of view is  PGC 978915 (catalog mag +18.4)

CCD Image (50% size, square root scale) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-01-19 03:55 UT (#852150-54) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

NGC 4742 / UGCA 303 - Detail

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

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

NGC 4742 / UGCA 303 - Earlier Image (Dec 2020)

CCD Image (100% size, square root scale, cropped) 3 x 180s exposure (average combine), 3x3 binning, C Filter 2020-12-22 06:15 UT (#841174-76) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

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UGCA 228 - Spiral Galaxy (PGC 34006)

UGCA 228 (Crater) Alias: PGC 34006 (catalog mag +14.4)  [ UGCA Galaxies ] Other small galaxy in field of view is PGC 170118 (catalog mag +15.4)

CCD Image (50% size, square root scale) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-01-19 04:17 UT (#852157-61) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

UGCA 228 - 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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NGC 4454 - Spiral Galaxy with Type Ia Supernova 2020abgq

NGC 4454 w/SN 2020abgq (Virgo) SN 2020abgq (Type: Ia) discovered 2020-11-30.854 UT by Koichi Itagaki  (Rochester Supernova site | Discovery Image )

NGC 4454 w/SN 2020abgq - 2021-01-19 (T+49.3d) Image below (2021-01-19.188) was taken 49.3 days after discovery of 2020abgq SN is shown by white cross hairs.  Measured magnitude ?

CCD Image  (125% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-01-19 04:39 UT (#852165-69) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2020abgq (NGC 4454) on Supernovae 2020 Page >>

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NGC 5331 - Spiral Galaxy (PGC 49266) with Type Ia Supernova 2020abir

NGC 5331 with SN 2020abir (Virgo) SN 2020abir (Type Ia, zhost=0.033056) discovered 2020-12-01.547 UT by ZTF Alias: ZTF20actocyw Mag +17.3 at discovery  (Rochester Supernova site | TNS )

NGC 5331 with SN 2020abir  - 2021-01-19 (T+48.7d) Image below (2021-01-19.203) was taken 48.7 days after discovery of 2020abir SN is too close to galaxy center to be separately resolved. Candidate SN is shown by white cross-hair. Measured Magnitude +14.9 (SN + Galaxy Nucleus) vs Host Galaxy catalog mag +14.1 (NGC 5331) or +15.5 (PGC 49266)

Annotated CCD Image (150% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-01-19 05:02 UT (#852173-77) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2020abir (NGC 5331) on Supernovae 2020 Page >>

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UGCA 271 - Irregular Galaxy (PGC 38481)

UGCA 271 (Canes Venatici) Alias: PGC 38481 (catalog mag ?) [ UGCA Galaxies , Irregular Galaxies ] Other faint galaxy in field of view is PGC 2157118 (catalog mag +18.4) Position of UGCA 271 is indicated by white circle

CCD Image (50% size, square root scale) 4 x 180s exposure (average combine), 3x3 binning, C Filter 2021-01-19 05:24 UT (#852181-84) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

UGCA 271 - Detail UGCA 271 is faint but just visible Target to be taken again using a longer exposure in a future session

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

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Satellite

Satellite passing across starfield near UGCA 271 (Canes Venatici) Satellite is evidently spinning

CCD Image (50% size, square root scale) 180s exposure (single exposure), 3x3 binning, C Filter 2021-01-19 05:14 UT (#852180) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

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NGC 4145 - Spiral Galaxy

NGC 4145 (Canes Venatici)

Annotated CCD Image (50% size, square root scale) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-01-19 05:46 UT (#852187-91) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

NGC 4145 -  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

NGC 4145 -  Earlier Image (2021-01-18)

CCD Image (100% size, square root scale, cropped) 2 x 180s exposure (average combine), 3x3 binning, C Filter 2021-01-18 02:52 UT (#851042-43) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

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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  Alias: ZTF21aaabvjk, Gaia21acj  (Rochester Supernova site | ZTF observations | )

MCG +6-30-84 / PGC 48870 with SN 2021K - 2021-01-19 (T+17.8d) Image below (2021-01-19.256) was taken 17.8 days after discovery of 2021K SN is shown by white cross hairs.  Measured magnitude +14.7 (SN + Galaxy Centre) vs  Host Galaxy Catalog Mag +15.5

Annotated CCD Image  (125% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-01-19 06:18 UT (#852199-203) 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 >>

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PGC 48887 - Spiral Galaxy

PGC 48887 (Canes Venatici) PGC 48887 (catalog +14.7), with other galaxies in view: PGC 214152 (catalog mag +17.2) & PGC 2044413 (catalog mag +18.4)

Annotated CCD Image  (125% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-01-19 06:18 UT (#852199-203) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

PGC 48887 - Earlier Image (2021-01-13)

Annotated CCD Image  (125% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-01-13 06:51 UT (#849123-27) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

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