David's Astronomy Pages CCD Images - Session 916 (2021-09-24)

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Objects	Session Notes
C/2019 L3 (ATLAS) - Comet     Nova Per 2020 - Nova (V1112 Per, AT2020abap)     AT 2021vqu - Type QSO Transient      NGC 514 - Spiral Galaxy with Type Ia Supernova 2020uxz      Variable Stars (photometric monitoring) - Z And, TT Ari, SS Cyg      Nearby Stars (astrometric monitoring) - None	- Full night Session (8.8 hours). - Clear skies all night but poor seeing and moonlit - Main aims of the session were to acquire a selection of targets including  Comet 67P/Churyumov-Gerasimenko - 12" LX200 + ST-10XME for imaging - TS 80mm APO + ZWO ASI178MC for guiding & imaging - Ambient Temperature: 12°C (min) - CCD Temperature:  -10°C - Notes from 2021-09-24 >>    [ Local Files >> ]   -

C/2019 L3 (ATLAS) - Comet

C/2019 L3 (ATLAS) - 2021-09-25 (passing through Auriga Sun Distance 3.69 AU (approaching) Earth Distance 3.78 AU (566.0 million km)		C/2019 L3 (ATLAS) - 2021-09-25, Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra 36.12 arcsec/hr, Dec -12.23 arcsec/hr)
Annotated CCD Image (50% size, square root scale) 3 x 45s exposure (average combine), 3x3 binning, C Filter 2021-09-25 04:51 UT (#916075-77) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2		CCD Image (100% size, log scale, cropped) 3 x 45s exposure (average combine), 3x3 binning, C Filter 2021-09-25 04:51 UT (#916075-77) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
Images of C/2019 L3 (ATLAS) 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 - 2021-09-25 (T+303.4d) Image below (2021-09-25.161) was taken 303.4 days after discovery of nova Nova is shown by white cross hairs.  Measured magnitude +15.4 (falling slowly)

Annotated CCD Image (100% size, linear scale, cropped) 5 x 90s exposure (average combine), 3x3 binning, C Filter 2021-09-25 03:56 UT (#916062-66) 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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AT 2021vqu - Type QSO Transient

AT 2021vqu (Pisces) AT 2021vqu (Type: QSO) discovered 2021-08-09.570 UT by Gaia Alias: Gaia21dsc Discovery Magnitude 16.68 (G-Gaia Filter) vs Historic Magnitude 16.94 +/- 0.06 SD ~0.25 mag rise in known QSO ( TNS 2021vqu | Gaia21dsc )

AT 2021vqu - 2021-09-25 (T+46.6d) Image below (2021-09-25.126) was taken 46.6 days after discovery of 2021vqu Position of reported transient (faint but distinct) is indicated by white cross-hairs Measured Magnitude +16.55 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped) 4 x 180s exposure (average combine), 3x3 binning, C Filter 2021-09-25 03:09 UT (#916039-42) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Annotated negative CCD Image (100% size, square root scale, cropped) 4 x 180s exposure (average combine), 3x3 binning, C Filter 2021-09-25 03:09 UT (#916039-42) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2021vqu on Transients 2021 Page >>

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NGC 514 - Spiral Galaxy with Type Ia Supernova 2020uxz

NGC 514 (Pisces) Spiral Galaxy with Type Ia Supernova [ Supernovae ] SN 2020uxz (Type 1a), discovered 2020/10/05.573 by Koichi Itagaki  (Rochester Supernova site | Discovery Image | )

NGC 514 with SN 2020uxz - 2021-09-25 (T+354.6d) Image below (2021-09-25.140) was taken 354.6 days after discovery of 2020uxz Position of earlier SN (faded & no longer visible) is shown by white cross hairs.  Poor quality image (poor sky transparency, low S/N)

Annotated CCD Image  (100% size, square root scale, cropped) 5 x 120s exposure (average combine), 3x3 binning, C Filter 2021-09-25 03:27 UT (#916046-50) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2020uxz (NGC 514) on Supernovae 2020 Page >>

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