David's Astronomy Pages CCD Images - Session 882 (2021-04-11)

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C/2020 T2 (Palomar) - Comet NGC 3310 - Spiral Galaxy (Herschel IV-60) with SN 2021gmj Nova Per 2020 - Nova (V1112 Per, AT2020abap) Nova Cas 2021 - Nova (V1405 Cas)       -  UGC 6930 w/SN2020rcq attempted failed (due to cloud)     Variable Stars (photometric monitoring) - AM CVn     Nearby Stars (astrometric monitoring) - None

- Night session (5.9 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 - Session interrupted for 4 hours (00:00 to 04:00) by cloud and rain showers - 12" LX200 + ST-10XME for imaging - TS 80mm APO + ZWO ASI178MC for guiding & imaging - Ambient Temperature: 0.5°C (min) - CCD Temperature:  -20°/ -25°C - Notes from 2021-04-11 >>    [ Local Files >> ]   -

C/2020 T2 (Palomar) - Comet

C/2020 T2 (Palomar) (passing through Canes Venatici) Sun Distance 2.32 AU (approaching) Earth Distance 1.49 AU (222.4 million km) Comet indicated by white cross-hairs		C/2020 T2 (Palomar) - 2021-04-11, Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra -22.79 arcsec/hr, Dec -4.07 arcsec/hr) (Note : Image is Log Scaled)
Annotated CCD Image (50% size, square root scale) 3 x 45s exposure (average combine), 3x3 binning, C Filter 2021-04-11 21:50 UT (#882004-06) 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 2021-04-11 21:56 UT (#882004-18) 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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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  ( Rochester Supernova site |  Gianluca Masi image)

NGC 3310 with SN 2021gmj - 2021-04-11 (T+22.6d) Image below (2021-04-11.926) was taken 22.6 days after discovery of 2021gmj SN position indicated by white cross-hairs

CCD Image (100% size, log scale, cropped) 3 x 180s exposure (average combine), 3x3 binning, C Filter 2021-04-11 22:19 UT (#882022-24) 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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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 - 2021-04-11 (T+137.1d) Image below (2021-04-11.944) was taken 137.1 days after discovery of nova Nova is shown by white cross hairs.  Measured magnitude +14.25 (brightening again)

Annotated CCD Image (100% size, linear scale, cropped) 3 x 90s exposure (average combine), 3x3 binning, C Filter 2021-04-11 22:47 UT (#882036-38) 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 - 2021-04-12 (T+24.7d) Image below (2021-04-12.142) was taken 24.7 days after after discovery of Nova Nova is shown by white cross hairs.  Measured magnitude +8.72  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) 3 x 180s exposure (average combine), 3x3 binning, C Filter 2021-04-12 03:30 UT (#882048-50) 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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