David's Astronomy Pages CCD Images - Session 884 (2021-04-13)

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Session Notes

C/2020 T2 (Palomar) - Comet     Nova Per 2020 - Nova (V1112 Per, AT2020abap) Nova Cas 2021 - Nova (V1405 Cas)     2MASX J12303540+4257559 - Galaxy with AGN / Transient AT 2021bgi     IC 863 - Spiral Galaxy with Type IIn Supernova 2021foa IC 992 - Spiral Galaxy with Type Ic Supernova 2021dwg     NGC 3310 - Spiral Galaxy (Herschel IV-60) with SN 2021gmj NGC 3389 - Spiral Galaxy NGC 4165 - Spiral Galaxy with Type II Supernova 2021gno NGC 4227 - Spiral Galaxy with Type Ia Supernova 2021biz NGC 5018 - Elliptical Galaxy with Type Ia Supernova 2021fxy     UGCA 304 - Spiral Galaxy (PGC 43679)     Variable Stars (photometric monitoring) - AM CVn, SY Cnc, R CrB, CI Cyg, SS Cyg, U Her, BL Lac, CY Lyr     Nearby Stars (astrometric monitoring) - HH And, Barnards Star, 61 Cyg, Groombridge 34, LAMOST-HVS1, CN Leo

- Night session (6.5 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 allowed -   - 12" LX200 + ST-10XME for imaging - TS 80mm APO + ZWO ASI178MC for guiding & imaging - Ambient Temperature: -2.5°C (min) - CCD Temperature:  -20°/-25°C - Notes from 2021-04-13 >>    [ Local Files >> ]   -

Observing Result

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C/2020 T2 (Palomar) - Comet

C/2020 T2 (Palomar) - 2021-04-14 (passing through Canes Venatici) Sun Distance 2.30 AU (approaching) Earth Distance 1.47 AU (220.5 million km) Comet indicated by white cross-hairs		C/2020 T2 (Palomar) - 2021-04-14, Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra -23.47 arcsec/hr, Dec -6.41 arcsec/hr)
Annotated CCD Image (50% size, square root scale) 15 x 45s exposure (average combine), 3x3 binning, C Filter 2021-04-14 01:15 UT (#884136-50) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2		CCD Image (100% size, log scale, cropped) 15 x 45s exposure (average combine), 3x3 binning, C Filter 2021-04-14 01:15 UT (#884136-50) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
Images of C/2020 T2 (Palomar) on Comets 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 - 2021-04-13 (T+139.2d) Image below (2021-04-13.981) was taken 139.2 days after discovery of nova Nova is shown by white cross hairs.  Measured magnitude +14.3 (turning)

Annotated CCD Image (100% size, linear scale, cropped) 5 x 90s exposure (average combine), 3x3 binning, C Filter 2021-04-13 23:38 UT (#884080-84) 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 - 2021-04-14 (T+26.7d) Image below (2021-04-13.105) was taken 26.7 days after after discovery of Nova Nova is shown by white cross hairs.  Measured magnitude +8.27 Note: star object is saturated and shows significant blooming, mag is likely to be underestimated (linked with Detection Threshold = 50)

CCD Image (100% size, linear scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-04-14 02:00 UT (#884163-67) 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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2MASX J12303540+4257559 - Galaxy with AGN / Transient AT 2021bgi

AT 2021bgi (Canes Venatici) In 2MASX J12303540+4257559 AT 2021bgi (Type AGN, zhost=0.065590) discovered 2021/01/27.048 UT by GSNST Alias: GSNST-21ar  ( Rochester Supernova site )  [ Active Galactic Nuclei ]

AT 2021bgi - 2021-04-13 (T+76.9d) Image below (2021-04-13.931) was taken 76.9 days after discovery of 2021bgi Transient/Galaxy nucleus is shown by white cross hairs.  Combined magnitude +15.26 (Clear Filter)

Annotated CCD Image  (125% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-04-13 22:29 UT (#884052-56) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2021bg (2MASX J12303540+4257559) on Transients 2021 Page >>

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IC 863 - Spiral Galaxy with Type IIn Supernova 2021foa

IC 863 with SN 2021foa (Virgo) SN 2021foa (Type: IIn) discovered 2021/03/15.450 UT by ASAS-SN Alias: ASASSN-21dg Discovery Magnitude 15.9 (g-Sloan Filter) vs Prior Non-Detection Limiting Magnitude 17.9  ( Rochester Supernova site | Discovery Image | TNS 2021foa )

IC 863 with SN 2021foa - 2021-04-14 (T+29.6d) Image below (2021-04-14.006) was taken 29.6 days after discovery of 2021foa SN is indicated by white cross-hairs.  Estimated Magnitude +15.3 (Clear Filter)

Annotated CCD Image  (150% size, square root scale, cropped) 4 x 180s exposure (average combine), 3x3 binning, C Filter 2021-04-14 00:15 UT (#884094-97) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2021foa (IC 863) on Supernovae 2021 Page >>

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IC 992 - Spiral Galaxy with Type Ic Supernova 2021dwg

IC 992 with SN2021dwg (Virgo) SN 2021dwg (Type: Ic) discovered 2021/02/27.420 UT by ZTF Alias: ZTF21aannoix Magnitude +18.44 at discovery  (Rochester Supernova site |  TNS SN 2021dwg | ZTF21aannoix Notes) [ Supernovae 2021 ]

IC 992 with SN 2021dwg - 2021-04-14 (T+45.6d) Image below (2021-04-14.066) was taken 45.6 days after discovery of 2021dwg Position of SN (very faint) is shown by white cross-hairs

Annotated CCD Image  (125% size, square root scale, cropped) 3 x 180s exposure (average combine), 3x3 binning, C Filter 2021-04-14 01:40 UT (#884157-59) 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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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 - 2021-04-13 (T+24.7d) Image below (2021-04-13.990) was taken 24.7 days after discovery of 2021gmj Position of SN (faint) is indicated by white cross-hairs

CCD Image (100% size, log scale, cropped) 4 x 180s exposure (average combine), 3x3 binning, C Filter 2021-04-13 23:55 UT (#884087-91) 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 3389 - Spiral Galaxy

NGC 3389 (Leo)

CCD Image (70% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-04-13 21:31 UT (#884018-22) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

NGC 3389 - Detail

Annotated CCD Image (125% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-04-13 21:31 UT (#884018-22) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

NGC 3389 - Earlier Image (Feb 2010)

CCD Image (cropped) 5 x 60s exposure (average combine), 3x3 binning, C Filter  2010-02-18 00:44 hUT (#413054-58) 12" LX200R  (at f/9.7) + ST-10XME

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NGC 4165 - Spiral Galaxy with Type II Supernova 2021gno

NGC 4165 with SN2021gno (Virgo) SN 2021gno (Type: II) discovered 2021/03/20.235 UT by ZTF Alias: ZTF21aaqhhfu Discovery Magnitude 18.20 (r-ZTF Filter)  ( Rochester Supernova site |  Claudio Balcon image | Giancarlo Cortini image | TNS 2021gno )

NGC 4165 with SN 2021gno - 2021-04-14 (T+24.8d) Image below (2021-04-14.037) was taken 24.8 days after discovery of 2021gno Position of SN (very faint) is shown by white cross hairs Poor quality image (poor sky transparency, uneven sky background)

Annotated CCD Image  (125% size, square root scale, cropped) 2 x 180s exposure (average combine), 3x3 binning, C Filter 2021-04-14 00:58 UT (#884130-32) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2021gno (NGC 4165) 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 - 2021-04-13 (T+74.4d) Image below (2021-04-13.915) was taken 74.4 days after discovery of 2021biz Position of SN (faint) is shown by white cross hairs.  Estimated Magnitude +17.3 (Clear Filter)

Annotated CCD Image  (125% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-04-13 22:06 UT (#884043-47) 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 5018 - Elliptical Galaxy with Type Ia Supernova 2021fxy

NGC 5018 with SN2021fxy (Virgo) SN 2021fxy (Type: Ia) discovered 2021/03/17.725 UT by Koichi Itagaki Discovery Magnitude 16.9 (Clear Filter) vs Prior Non-Detection in DSS Image  ( Rochester Supernova site | Discovery Image | Paolo Campaner image ) ( TNS 2021fxy )

NGC 5018 with SN 2021fxy - 2021-04-13 (T+27.2d) Image below (2021-04-13.966) was taken 27.2 days after discovery of 2021fxy SN is indicated by white cross-hairs.  Measured magnitude + 14.23 (Clear Filter)

Annotated CCD Image  (100% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-04-13 23:20 UT (#884073-77) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2021fxy (NGC 5018) on Supernovae 2021 Page >>

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UGCA 304 - Spiral Galaxy (PGC 43679)

UGCA 304 (Virgo) Alias: PGC 43679 (catalog mag +14.2) [ UGCA Galaxies ] With adjacent galaxies PGC 43690 (catalog mag +14.4),   PGC 183366 (catalog mag +16.9), PGC 183375 (catalog mag +17.3),  PGC 987099 (catalog mag +17.6),  PGC 987583 (catalog mag +17.9)

CCD Image (50% size, square root scale) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-04-13 22:59 UT (#884065-69) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

UGCA 304 - Detail

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

UGCA 304 - Earlier Image (Jan 2021)

CCD Image (100% size, square root scale, cropped) 2 x 180s exposure (average combine), 3x3 binning, C Filter 2021-01-23 03:38 UT (#853293-94) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

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