David's Astronomy Pages CCD Images - Session 897 (2021-05-10)

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Session Notes

C/2020 T2 (Palomar) - Comet     Nova Cas 2021 - Nova (V1405 Cas)     CGCG 056-009 - Galaxy with Type Ia Supernova 2021apf     PGC 48336 - Spiral Galaxy UGC 11177 - Spiral Galaxy with Type Ia Supernova 2021koq       - UGC 8426 w/AT2021knq attempt failed (due to cloud / poor sky transparency)     Variable Stars (photometric monitoring) - SS Her, U Her, BL Lac     Nearby Stars (astrometric monitoring) - Barnards Star

- Night session (5.6 hours), Session delayed and interrupted by cloud. - 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: 2°C (min) - CCD Temperature:  -20°C - Notes from 2021-05-10 >>    [ Local Files >> ]   -

Observing Result

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C/2020 T2 (Palomar) - Comet

C/2020 T2 (Palomar) - 2021-05-11 (passing through Canes Venatici) Sun Distance 2.18 AU (approaching) Earth Distance 1.41 AU (211.1 million km)		C/2020 T2 (Palomar) - 2021-05-11, Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra -17.38 arcsec/hr, Dec -39.32 arcsec/hr)
Annotated CCD Image (50% size, square root scale) 3 x 45s exposure (average combine), 3x3 binning, C Filter 2021-05-11 00:56 UT (#897028-30) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2		CCD Image (100% size, log scale, cropped) 8 x 45s exposure (average combine), 3x3 binning, C Filter 2021-05-11 00:59 UT (#897028-35) 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 - 2021-05-10 (T+53.5d) Image below (2021-05-10.967) was taken 53.5 days after after discovery of Nova Nova is shown by white cross hairs.  Measured magnitude +8.14 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 2021-05-10 23:16 UT (#897009-13) 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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CGCG 056-009 - Galaxy with Type Ia Supernova 2021apf

CGCG 056-009 with SN 2021apf (Ophiuchus) SN 2021apf (Type Ia, z=0.006531) discovered 2021/01/16.557 UT by ZTF Alias: ZTF21aafdxca Discovery Magnitude 15.34 (r-0ZTF Filter)  (Rochester Supernova site | Fabio Feijo image | TNS 2021apf )

CGCG 056-009 with SN 2021apf - 2021-05-11 (T+114.5d) Image below (2021-05-11.047) was taken 114.5 days after discovery of 2021apf Position of SN (very faint) is shown by white cross hairs.   Estimated Magnitude +18.4 (Clear Filter)

Annotated CCD Image  (150% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-05-11 01:17 UT (#897039-43) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2021apf (CGCG 056-009) on Supernovae 2021 Page >>

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PGC 48336 - Spiral Galaxy

PGC 48336 (Canes Venatici)

PGC 48336 - Spiral Galaxy with Comet C/2020 T2 (Palomar) in same FOV

CCD Image (100% size, log scale, cropped) 3 x 45s exposure (average combine), 3x3 binning, C Filter 2021-05-11 00:56 UT (#897028-30) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

PGC 48336 - Detail PGC 48336 (catalog mag +15.7) with adjacent galaxies PGC 48327 (catalog mag 16.0) & PGC 214134 (catalog mag 16.8)

Annotated CCD Image (150% size, square root scale, cropped) Image details as above

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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 with SN 2021koq - 2021-05-11 (T+12.6d) Image below (2021-05-11.063) was taken 12.6 days after discovery of 2021koq Position of reported transient (distinct) is shown by white cross-hairs Measured Magnitude +16.19 (Clear Filter)

Annotated CCD Image (150% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-05-11 01:38 UT (#897047-51) 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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