David's Astronomy Pages CCD Images - Session 891 (2021-04-25)

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Nova Per 2020 - Nova (V1112 Per, AT2020abap) Nova Cas 2021 - Nova (V1405 Cas)     MCG +6-30-84 - Galaxy (PGC 48870) with Type Ia Supernova 2021K     NGC 3310 - Spiral Galaxy (Herschel IV-60) with Type II Supernova 2021gmj NGC 4227 - Spiral Galaxy with Type Ia Supernova 2021biz NGC 4774 - Spiral Galaxy with Type IIP Supernova 2021cjd     UGC 6930 - Spiral Galaxy with Type Ia Supernova 2020rcq     Variable Stars (photometric monitoring) - None     Nearby Stars (astrometric monitoring) - None

- Night session (2.4 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 allowed - Poor quality skies - 12" LX200 + ST-10XME for imaging - TS 80mm APO + ZWO ASI178MC for guiding & imaging - Ambient Temperature: 6°C (min) - CCD Temperature:  -20°C - Notes from 2021-04-25 >>    [ Local Files >> ]   -

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 - 2021-04-25 (T+151.1d) Image below (2021-04-25.936) was taken 151.1 days after discovery of nova Nova is shown by white cross hairs.  Measured magnitude +14.2 (falling)

Annotated CCD Image (100% size, linear scale, cropped) 5 x 90s exposure (average combine), 3x3 binning, C Filter 2021-04-25 22:33 UT (#891030-34) 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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Nova Cas 2021 - Nova (V1405 Cas)

Nova Cas 2021 (Cassiopeia) Nova in Cassiopeia discovered 2021-03-18.4236,  by Yuji Nakamura (Japan) Magnitude at discovery +9.6 (unfiltered CCD) AT2021hkn (Type: Nova) reported by 2021/03/30.055 UT by Gaia Alias: Gaia21bpe, AT2021hkn, V1405 Cas

Nova Cas 2021 / AT2021hkn - 2021-04-25 (T+38.5d) Image below (2021-04-25.946) was taken 38.5days after after discovery of Nova Nova is shown by white cross hairs.  Measured magnitude +8.12  Note: star object is saturated and shows some blooming, mag is probably underestimated (linked with Detection Threshold = 50)

CCD Image (100% size, linear scale, cropped) 5 x 60s exposure (average combine), 3x3 binning, C Filter 2021-04-25 22:45 UT (#891037-41) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of Nova Cas 2021 on Novae Page >>

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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  Discovery Magnitude 15.71 Alias: ZTF21aaabvjk, Gaia21acj Confirmed SN Ia Gaia, 2021-01-04 03:38:42, Mag 15.42 Gaia, 2021-01-27 03:33:29, Mag 15.86 Gaia, 2021-05-03 12:37:25, Mag 18.30 Gaia, 2021-05-16 06:43:09, Mag 18.49 Gaia, 2021-05-16 08:29:43, Mag 18.62 Gaia, 2021-07-28 07:08:07, Mag 19.80 Gaia, 2021-08-21 19:10:09, Mag 20.21  (Rochester Supernova site | ZTF observations | TNS 2021K | Gaia21acj )

MCG +6-30-84 with SN 2021K - 2021-04-25 (T+114.5d) Image below (2021-04-25.994) was taken 114.5 days after discovery of 2021K Position of reported SN is shown by white cross hairs.  Measured magnitude +15.06 (SN + Galaxy Centre, Clear Filter) vs  Host Galaxy Catalog Mag +15.29 Poor quality image (due to bright sky background causing low S/N)

Annotated CCD Image  (125% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-04-26 00:01 UT (#891069-73) 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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NGC 3310 - Spiral Galaxy  (Herschel IV-60) with Type II Supernova 2021gmj

NGC 3310 / Herschel IV-60 with SN2021gmj (Ursa Major) SN 2021gmj (Type: II) discovered 2021/03/20.320 UT by DLT40 Alias: ZTF21aaqgmjt, ATLAS21izq Discovery Magnitude 15.98 (r-Sloan Filter)  ( Rochester Supernova site |  Gianluca Masi image | TNS 2021gmj )

NGC 3310 with SN 2021gmj - 2021-04-25 (T+36.6d) Image below (2021-04-25.953) was taken 36.6 days after discovery of 2021gmj Position of SN (faint) is indicated by white cross-hairs Estimated Magnitude +14.7 (Clear Filter)

CCD Image (100% size, log scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-04-25 23:02 UT (#891045-49) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2021gmj (NGC 3310) on Supernovae 2021 Page >>

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NGC 4227 - Spiral Galaxy with Type Ia Supernova 2021biz

NGC 4227 with SN2021biz (Canes Venatici) SN 2021biz (Type: Ia) discovered 2021/01/29.543 UT by ATLAS Alias: ATLAS21dfz Discovery Magnitude 18.33 (orange-ATLAS Filter) ( Rochester Supernova site | Gianluca Masi image | Jean-Claude Merlin image | TNS 2021biz )

NGC 4227 with SN 2021biz - 2021-04-25 (T+86.4d) Image below (2021-04-25.910) was taken 86.4 days after discovery of 2021biz Position of SN (faint) is shown by white cross hairs.  Estimated Magnitude +17.7 (Clear Filter)

Annotated CCD Image  (125% size, square root scale, cropped) 4 x 180s exposure (average combine), 3x3 binning, C Filter 2021-04-25 21:57 UT (#891005-08) 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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NGC 4774 - Spiral Galaxy with Type IIP Supernova 2021cjd

NGC 4774 / Kidney Bean Galaxy (Canes Venatici) NGC 4774 with SN 2021cjd (Canes Venatici) SN 2021cjd (Type: IIP) discovered 2021/02/07.491 UT by ZTF Alias: ZTF21aajgdeu Discovery Magnitude 20.23 (g-ZTF Filter) ( TNS 2021cjd )

NGC 4774 with SN 2021cjd - 2021-04-25 (T+77.5d) Image below (2021-04-25.980) was taken 77.5 days after discovery of 2021cjd Position of SN (faint  / not separately visisble) is shown by white cross hairs. Measured Magnitude +14.30 (SN + Galaxy Centre, Clear Filter)  Poor quality image (due to bright sky background causing low S/N)

Annotated CCD Image (50% size, square root scale) 3 x 180s exposure (average combine), 3x3 binning, C Filter 2021-04-25 23:36 UT (#891061-63) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2021cjd (in NGC 4774) on Supernovae 2021 Page >>

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UGC 6930 - Spiral Galaxy with Type Ia Supernova 2020rcq

UGC 6930 with SN 2020rcq (Ursa Major) SN 2020rcq (Type 1a) discovered 2020/08/09.168 by Zwicky Transient Facility (ZTF) Discovery Magnitude +18.43 (r-ZTF Filter)  (Rochester Supernova site | Giancarlo Cortini image | TNS 2020rcq )

UGC 6930 with SN 2020rcq - 2021-04-25 (T+259.8d) Image below (2021-04-25.969) was taken 259.8 days after discovery of 2020rcq Position of SN (very faint) is shown by white cross hairs.   Measured Magnitude +18.07 (Clear Filter)

Annotated CCD Image (100% size, square root scale, cropped) 5 x 120s exposure (average combine), 3x3 binning, C Filter 2021-04-25 23:21 UT (#891053-57) 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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