David's Astronomy Pages CCD Images - Session 898 (2021-05-22)

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Images (S899)

Objects	Session Notes
C/2020 T2 (Palomar) - Comet     UGC 8426 - Spiral Galaxy with Transient AT 2021knq       - NGC 3310 w/SN2021gmj attempt failed (incorrect telescope slew)     Variable Stars (photometric monitoring) - AM CVn, AM Her, BL Lac     Nearby Stars (astrometric monitoring) - 61 Cyg	- Night session (2.8 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 - Poor quality skies - 12" LX200 + ST-10XME for imaging - TS 80mm APO + ZWO ASI178MC for guiding & imaging - Ambient Temperature: 1.5°C (min) - CCD Temperature:  -15°/-20°C - Notes from 2021-05-22 >>    [ Local Files >> ]   -

Observing Result

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C/2020 T2 (Palomar) - Comet

C/2020 T2 (Palomar) - 2021-05-22 (passing through Canes Bootes) Sun Distance 2.14 AU (approaching) Earth Distance 1.42 AU (212.4 million km)		C/2020 T2 (Palomar) - 2021-05-22, Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra -6.65 arcsec/hr, Dec -51.69 arcsec/hr)
Annotated CCD Image (50% size, square root scale) 3 x 45s exposure (average combine), 3x3 binning, C Filter 2021-05-22 23:55 UT (#898025-27) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2		CCD Image (100% size, log scale, cropped) 7 x 45s exposure (average combine), 3x3 binning, C Filter 2021-05-22 23:57 UT (#898025-31) 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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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 - 2021-05-22 (T+27.0d) Image below (2021-05-22.989) was taken 27.0 days after discovery of 2021knq Reported position of transient (faint) is shown by white cross-hairs Poor quality image (poor sky transparency, cloud, single frame)

Annotated CCD Image  (125% size, square root scale, cropped) 180s exposure (single frame), 3x3 binning, C Filter 2021-05-22 23:44 UT (#898022) 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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