David's Astronomy Pages CCD Images - Session 896 (2021-05-07)

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Session Notes

C/2020 T2 (Palomar) - Comet     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     UGC 8426 - Spiral Galaxy with Transient AT 2021knq UGC 11177 - Spiral Galaxy with Type Ia Supernova 2021koq     Variable Stars (photometric monitoring) - R CrB, AM Her, BL Lac     Nearby Stars (astrometric monitoring) - 61 Cyg

- Post-Midnight Session (2.6 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 -   - 12" LX200 + ST-10XME for imaging - TS 80mm APO + ZWO ASI178MC for guiding & imaging - Ambient Temperature: 0°C (min) - CCD Temperature:  -15°/-20°C - Notes from 2021-05-07 >>    [ Local Files >> ]   -

Observing Result

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C/2020 T2 (Palomar) - Comet

C/2020 T2 (Palomar) - 2021-05-08 (passing through Canes Venatici) Sun Distance 2.19 AU (approaching) Earth Distance 1.41 AU (211.3 million km)		C/2020 T2 (Palomar) - 2021-05-08, Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra -19.50 arcsec/hr, Dec -35.79 arcsec/hr)
Annotated CCD Image (50% size, square root scale) 3 x 45s exposure (average combine), 3x3 binning, C Filter 2021-05-08 00:39 UT (#896018-20) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2		CCD Image (100% size, log scale, cropped) 14 x 45s exposure (average combine), 3x3 binning, C Filter 2021-05-08 00:44 UT (#896018-32) 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 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 - 2021-05-08 (T+50.6d) Image below (2021-05-08.067) was taken 50.6 days after after discovery of Nova Nova is shown by white cross hairs.  Measured magnitude +8.13 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 2021-05-08 01:39 UT (#896068-72) 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 - 2021-05-08 (T+48.8d) Image below (2021-05-08.074) was taken 48.8 days after discovery of 2021gmj Position of SN (faint) is indicated by white cross-hairs Estimated Magnitude +14.9 (Clear Filter)

CCD Image (100% size, log scale, cropped) 3 x 180s exposure (average combine), 3x3 binning, C Filter 2021-05-08 01:52 UT (#896075-77) 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 - 2021-05-07 (T+48.8d) Image below (2021-05-07.999) was taken 48.8 days after discovery of 2021gno Position of SN (very faint) is shown by white cross hairs Estimated Magnitude +18.1 (Clear Filter)

Annotated CCD Image  (125% size, square root scale, cropped) 4 x 180s exposure (average combine), 3x3 binning, C Filter 2021-05-08 00:05 UT (#896004-07) 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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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 - 2021-05-08 (T+12.0d) Image below (2021-05-08.011) was taken 12.0 days after discovery of 2021knq Reported position of transient (faint) is shown by white cross-hairs

Annotated CCD Image  (125% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-05-08 00:25 UT (#896011-15) 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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UGC 11177 - Spiral Galaxy with Type Ia Supernova 2021koq

UGC 11177 with SN 2021koq (Ophiuchus) SN 2021koq (Type: Ia) discovered 2021/04/28.486 UT by ATLAS Alias: ATLAS21nmi Discovery Magnitude 17.84 (orange-ATLAS Filter)  ( Rochester Supernova site | TNS 2021koq | TNS AstroNote ATLAS21nmi )

UGC 11177 - Spiral Galaxy with SN 2021koq (T+9.6d)

Annotated CCD Image (50% size, square root scale) 180s exposure (single frame), 3x3 binning, C Filter 2021-05-08 02:12 UT (#896083) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

UGC 11177 with SN 2021koq - 2021-05-08 (T+9.6d) Image below (2021-05-08.092) was taken 9.6 days after discovery of 2021koq Position of reported transient (faint but distinct) is shown by white cross-hairs Measured Magnitude +15.92 (Clear Filter)

Annotated CCD Image (150% size, square root scale, cropped) 180s exposure (single frame), 3x3 binning, C Filter 2021-05-08 02:12 UT (#896083) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2021koq (in UGC 11177) on Supernovae 2021 Page >>

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