David's Astronomy Pages Images - Session 1079 (2022-12-31)

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Objects	Session Notes
Jupiter - Planet 73P/Schwassmann-Wachmann - Comet     AT 2021afdl - CV Type Transient (Attempt)     M31 2022-12a? - Candidate Extragalactic Nova in M31     Variable Stars (photometric monitoring) - None      Nearby Stars (astrometric monitoring) - None	- Short pre-dawn session (2.2h), start delayed by wind.     - 12" LX200 + ST-10XME for imaging - TS 80mm APO + ZWO ASI178MC for guiding & imaging - Ambient Temperature: -1.5°C (min) - CCD Temperature:  -25°-30 C - Notes from 2022-12-31 >>

Jupiter - Planet

Jupiter (passing through Pisces) Sun Distance 4.95 AU Earth Distance 5.01 AU (749.0 million km) (Ra 16.02 arcsec/hr, Dec 7.72 arcsec/hr)

Jupiter  Approx Colour

Approx Colour CCD Image (100% size, cropped, unsharp masked) Combined BVR Image from 3 images (20 frames): Blue Channel: 10 x 0.2s exposure, 1x1 binning, B Filter Green Channel: 10 x 0.12s exposure, 1x1 binning, V Filter Red Channel: 10 x 0.12s exposure, 1x1 binning, R Filter 2022-12-31 18:19 UT (#1079042-71) 12" LX200R (at f/10.4) + ST-10XME

Approx Colour CCD Image (150% size, cropped, unsharp masked) Image details as above

Jupiter Moons

Annotated CCD Image (70% size, linear scale) 5 x 0.2s exposure (average combine), 3x3 binning, V Filter 2022-12-31 18:17 UT (#1079037-41) 12" LX200R (at f/10.4) + ST-10XME

Annotated CCD Image (70% size, linear scale) 5 x 0.2s exposure (average combine), 3x3 binning, V Filter 2022-12-31 18:57 UT (#1079177-81) 12" LX200R (at f/10.4) + ST-10XME

Io & Europa Moons showing movement of moons over a 40 min period

Annotated CCD Image (70% size, linear scale) 5 x 0.2s exposure (average combine), 3x3 binning, V Filter 2022-12-31 18:17 UT (#1079037-41) 12" LX200R (at f/10.4) + ST-10XME

Annotated CCD Image (70% size, linear scale) 5 x 0.2s exposure (average combine), 3x3 binning, V Filter 2022-12-31 18:57 UT (#1079177-81) 12" LX200R (at f/10.4) + ST-10XME

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73P/Schwassmann-Wachmann - Comet

73P/Schwassmann-Wachmann (passing through Aquarius) Sun Distance 1.89 AU (Receeding) Earth Distance 2.12 AU (316.6 million km) Forecast position of comet indicated by white circle		73P/Schwassmann-Wachmann - 2022-12-31 Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra 82.55 arcsec/hr, Dec 44.62 arcsec/hr) Poor quality image (poor sky transparency)
Annotated CCD Image (50% size, square root scale) 12 x 45s exposure (average combine), 3x3 binning, Clear Filter 2022-12-31 17:35 UT (#1079007-18) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2		Annotated CCD Image (100% size, log scale, cropped) 12 x 45s exposure (average combine), 3x3 binning, Clear Filter 2022-12-31 17:35 UT (#1079007-18) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
Images of 73P/Schwassmann-Wachmann on Comets 2022 Page >>

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AT 2021afdl - CV Type Transient (Attempt)

AT 2021afdl (Pegasus) AT 2021afdl (Type: CV) discovered 2021-11-22.240 UT by Gaia Alias: Gaia21fgm Alerting magnitude 15.22 (vs Historic magnitude 18.78) Outburst in candidate CV, previous outburst reported in Gaia15abf  ( TNS 2021afdl  | Gaia21fgm )

AT 2021afdl - 2022-12-31 (T+404.5d) Image below (2022-12-31.739) was taken 404.5 days after discovery of 2021afdl Position of earlier reported transient (not visible) is shown by white circle Object is likely at it's normal (non-outburst) magnitude level

Annotated CCD Image (100% size, linear scale, cropped) 5 x 60s exposure (average combine), 3x3 binning, Clear Filter 2022-12-31 17:48 UT (#1079022-26) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2021afdl on Transients 2021 Page >>

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M31 2022-12a? - Candidate Extragalactic Nova in M31

M31 with Nova M31 2022-12a? (Andromeda) Nova M31 2022-12a? (Type: unk) discovered 2022-12-12.489 UT by Koichi Itagaki Alias: TCP J00411172+4023211 Discovery Mag 17.5  ( Rochester Latest Extragalactic Novae | Klaus Wenzel image )

Nova M31 2022-12a? - 2022-12-31 (T+19.3d) Image below (2022-12-31.747) was taken 19.3 days after discovery of Nova M31 2022-12a? Position of reported candidate nova (faint) is shown by white cross-hairs Measured magnitude 17.55

Annotated CCD Image (100% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2022-12-31 18:05 UT (#1079029-33) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of Nova M31 2022-12d? (M31) on Transients 2022 Page >>

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