David's Astronomy Pages CCD Images - Session 890 (2021-04-24)

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Session Notes

Nova Per 2020 - Nova (V1112 Per, AT2020abap) Nova Cas 2021 - Nova (V1405 Cas)     IC 992 - Spiral Galaxy with Type Ic Supernova 2021dwg KUG 1206+328 - Spiral Galaxy with Type Ia Supernova 2020aeps     NGC 3310 - Spiral Galaxy (Herschel IV-60) with Type II Supernova 2021gmj NGC 4227 - Spiral Galaxy with Type Ia Supernova 2021biz     UGC 6930 - Spiral Galaxy with Type Ia Supernova 2020rcq     Variable Stars (photometric monitoring) - CI Cyg, BL Lac, CY Lyr     Nearby Stars (astrometric monitoring) - HH And, 61 Cyg, EV Lac

- Night session (4.6 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: 1°C (min) - CCD Temperature:  -20°C - Notes from 2021-04-24 >>    [ 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+150.2d) Image below (2021-04-25.019) was taken 150.2 days after discovery of nova Nova is shown by white cross hairs.  Measured magnitude +13.9 (rising again ?) Poor quality skies / low transparency

Annotated CCD Image (100% size, linear scale, cropped) 2 x 90s exposure (average combine), 3x3 binning, C Filter 2021-04-25 00:31 UT (#890060-61) 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 - 2021-04-24 (T+37.5d) Image below (2021-04-24.968) was taken 37.5 days after after discovery of Nova Nova is shown by white cross hairs.  Measured magnitude +7.99  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 2021-04-24 23:17 UT (#890028-32) 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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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 - 2021-04-25 (T+56.6d) Image below (2021-04-25.004) was taken 56.6 days after discovery of 2021dwg Position of SN (not visible) is shown by white cross-hairs 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 2021-04-25 00:15 UT (#890052-56) 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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KUG 1206+328 - Spiral Galaxy with Type Ia Supernova 2020aeps

KUG 1206+328 with SN 2020aeps (Coma Berenices) SN 2020aeps (Type: Ia) discovered 2020/12/29.904 UT by XOSS Alias: XM25HT, ZTF20adagenq, Gaia21adn  (Rochester Supernova site | Discovery Image  )

KUG 1206+328 with SN 2020aeps - 2021-04-24 (T+116.1d) Image below (2021-04-24.977) was taken 116.1 days after discovery of 2020aeps Position of SN (not visible) is shown by white cross-hairs Poor quality image (due to bright sky background causing low S/N)

CCD Image  (150% size, square root scale, cropped) 5 x 120s exposure (average combine), 3x3 binning, C Filter 2021-04-24 23:33 UT (#890036-40) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2020aeps (KUG 1206+328) on Supernovae 2020 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+35.7d) Image below (2021-04-25.033) was taken 35.7 days after discovery of 2021gmj Position of SN (faint) is indicated by white cross-hairs Estimated Magnitude +14.8 (Clear Filter)

CCD Image (100% size, log scale, cropped) 3 x 180s exposure (average combine), 3x3 binning, C Filter 2021-04-25 00:52 UT (#890069-71) 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 - 2021-04-24 (T+85.4d) Image below (2021-04-24.990) was taken 85.4 days after discovery of 2021biz Position of SN (faint) is shown by white cross hairs.  Poor quality image (bright sky background)

Annotated CCD Image  (125% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-04-24 23:54 UT (#890044-48) 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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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+258.9d) Image below (2021-04-25.044) was taken 258.9 days after discovery of 2020rcq SN (barely visible) is shown by white cross hairs.   Poor quality image (bright sky background, low S/N)

Annotated CCD Image (100% size, square root scale, cropped) 4 x 120s exposure (average combine), 3x3 binning, C Filter 2021-04-25 01:07 UT (#890075-78) 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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