David's Astronomy Pages CCD Images - Session 895 (2021-05-06)

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Session Notes

C/2020 T2 (Palomar) - Comet     Nova Per 2020 - Nova (V1112 Per, AT2020abap) Nova Cas 2021 - Nova (V1405 Cas)     NGC 3310 - Spiral Galaxy (Herschel IV-60) with Type II Supernova 2021gmj NGC 4165 - Spiral Galaxy with Type II Supernova 2021gno NGC 4227 - Spiral Galaxy with Type Ia Supernova 2021biz     UGC 8426 - Spiral Galaxy with Transient AT 2021knq       - NGC 7767 w/AT2021kni attempt failed (due to bright sky & bad guiding)   - UGC 11177 w/AT2021koq attempt failed (due to mis-location)     Variable Stars (photometric monitoring) - U Her, BL Lac     Nearby Stars (astrometric monitoring) - HH And, 61 Cyg

- Late-night session (3.7 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: 3°C (min) - CCD Temperature:  -15°/-20°C - Notes from 2021-05-06 >>    [ Local Files >> ]   -

Observing Result

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C/2020 T2 (Palomar) - Comet

C/2020 T2 (Palomar) - 2021-05-07 (passing through Canes Venatici) Sun Distance 2.20 AU (approaching) Earth Distance 1.41 AU (211.4 million km)		C/2020 T2 (Palomar) - 2021-05-07, Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra -20.13 arcsec/hr, Dec -34.60 arcsec/hr)
Annotated CCD Image (50% size, square root scale) 3 x 45s exposure (average combine), 3x3 binning, C Filter 2021-05-07 00:42 UT (#895033-35) 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 2021-05-07 00:47 UT (#895033-47) 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 - 2021-05-06 (T+162.1d) Image below (2021-05-06.948) was taken 162.1 days after discovery of nova Nova is shown by white cross hairs.  Measured magnitude +14.35 (falling)

Annotated CCD Image (100% size, linear scale, cropped) 90s exposure (single frame), 3x3 binning, C Filter 2021-05-06 22:47 UT (#895004) 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 - 2021-05-07 (T+49.7d) Image below (2021-05-07.074) was taken 49.7 days after after discovery of Nova Nova is shown by white cross hairs.  Measured magnitude +7.90 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 60s exposure (average combine), 3x3 binning, C Filter 2021-05-07 01:51 UT (#895088-92) 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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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 - 2021-05-06 (T+47.6d) Image below (2021-05-06.955) was taken 47.6 days after discovery of 2021gmj Position of SN (very faint) is indicated by white cross-hairs Very poor quality image (poor sky transparency / single sub-frame)

CCD Image (100% size, log scale, cropped) 180s exposure (single frame), 3x3 binning, C Filter 2021-05-06 22:55 UT (#895008) 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 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 - 2021-05-06 (T+47.7d) Image below (2021-05-06.981) was taken 47.7 days after discovery of 2021gno Position of SN (very faint) is shown by white cross hairs Estimated Magnitude +18.2 (Clear Filter)

Annotated CCD Image  (125% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-05-06 23:41 UT (#895012-16) 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 - 2021-05-06 (T+97.5d) Image below (2021-05-06.996) was taken 97.5 days after discovery of 2021biz Position of SN (faint) is shown by white cross hairs.  Estimated Magnitude +18.1 (Clear Filter)

Annotated CCD Image  (125% size, square root scale, cropped) 2 x 180s exposure (average combine), 3x3 binning, C Filter 2021-05-06 23:57 UT (#895019-20) 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 8426 - Spiral Galaxy with Transient AT 2021knq

UGC 8426 with AT 2021knq (Canes Venatici) AT 2021knq (Type: unk) discovered 2021/04/26.034 UT by MASTER Alias: MASTER OT J132415.53+312019.0 Discovery Magnitude 17.2  ( Rochester Supernova site | TNS 2021knq )

UGC 8426 with AT 2021knq - 2021-05-07 (T+11.0d) Image below (2021-05-07.013) was taken 11.0 days after discovery of 2021knq Reported position of transient (faint) is shown by white cross-hairs Estimated Magnitude +17.9 (Clear Filter)

Annotated CCD Image  (125% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-05-07 00:28 UT (#895026-30) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2021knq (UGC 8426) on Transients 2021 Page >>

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