David's Astronomy Pages Images - Session 1102 (2023-02-26)

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Images (S1103)

Objects	Session Notes
C/2020 V2 (ZTF) - Comet C/2021 X1 (Maury-Attard) - Comet C/2022 U2 (ATLAS) - Comet     M31 - Spiral Galaxy with Transient AT 2023brc (Attempt)     Variable Stars (photometric monitoring) - SS Cyg      Nearby Stars (astrometric monitoring) - Groombridge 34	- Short evening session (1.9 hours) . Skies became cloudy 2 hours into session and remained overcast until dawn     - 12" LX200 + ST-10XME for imaging - TS 80mm APO + ZWO ASI178MC for guiding & imaging - Ambient Temperature: -1.0°C (min) - CCD Temperature:   -20°/-25°C - Notes from 2023-02-26 >>

C/2020 V2 (ZTF) - Comet

C/2020 V2 (ZTF) - 2023-02-26 (passing through Andromeda) Sun Distance 2.37 AU (approaching) Earth Distance 2.58 AU (385.9 million km) Passing by galaxy PGC 6404 (catalog mag 15.5)		C/2020 V2 (ZTF) - 2023-02-26 Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra 27.29 arcsec/hr, Dec -63.61 arcsec/hr)
Annotated CCD Image (50% size, square root scale) 3 x 60s exposure (average combine), 3x3 binning, Clear Filter 2023-02-26 19:54 UT (#1102035-37) 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) 14 x 60s exposure (average combine), 3x3 binning, Clear Filter 2023-02-26 20:01 UT (#1102035-49) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
Images of C/2020 V2 (ZTF) on Comets 2022 Page >>  Images of C/2020 V2 (ZTF) on Comets 2023 Page >>

C/2020 V2 (ZTF)  - False Colour Inverse Spectrum Images

C/2020 V2 (ZTF)  - 2023-02-26

False Colour CCD Image (70% size, log scale) 14 x 60s exposure (average combine), 3x3 binning, Clear Filter 2023-02-26 20:01 UT (#1102035-49) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

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C/2021 X1 (Maury-Attard) - Comet

C/2021 X1 (Maury-Attard) - 2023-02-26 (passing through Cetus) Sun Distance 3.34 AU Earth Distance 3.74 AU (559.7 million km)		C/2021 X1 (Maury-Attard) - 2023-02-26 Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra -13.36 arcsec/hr, Dec 29.35 arcsec/hr)
Annotated CCD Image (50% size, square root scale) 7 x 90s exposure (average combine), 3x3 binning, Clear Filter 2023-02-26 19:14 UT (#1102006-12) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2		Annotated CCD Image (100% size, square root scale, cropped) 7 x 90s exposure (average combine), 3x3 binning, Clear Filter 2023-02-26 19:14 UT (#1102006-12) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
Images of C/2021 X1 (Maury-Attard) on Comets 2023 Page >>

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C/2022 U2 (ATLAS) - Comet

C/2022 U2 (ATLAS) - 2023-02-26 (passing through Orion) Sun Distance 1.47 AU (receeding) Earth Distance 0.79 AU (118.8 million km)		C/2022 U2 (ATLAS) - 2023-02-26 Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra 77.47 arcsec/hr, Dec -139.57 arcsec/hr)
Annotated CCD Image (50% size, square root scale) 4 x 90s exposure (average combine), 3x3 binning, Clear Filter 2023-02-26 20:24 UT (#1102052-58) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2		Annotated CCD Image (100% size, square root scale, cropped) 4 x 90s exposure (average combine), 3x3 binning, Clear Filter 2023-02-26 20:24 UT (#1102052-58) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
Images of C/2022 U2 (ATLAS) on Comets 2023 Page >>

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M31 - Spiral Galaxy with Transient AT 2023brc (Attempt / Unconfirmed)

M31 with AT 2023brc (Andromeda) AT 2023brc (Type: unk) discovered 2023-02-13.558 UT by XOSS Alias: XM96MZ, PNV J00422147+4112452 Discovery Mag 18 (Clear filter)  ( Rochester Supernova site | TNS 2023brc )

M31 with AT 2023brc Image taking with secondary scope showing position of reported transient (blue circle) relative to outline of M31 galaxy (white ellipse) & M31 Galaxy centre (labelled)

CMOS Image (16% size) 10s exposure (stacked), 1x1 binning 2023-02-26 20:33 UT (#Cam2_Ref) TS 80mm APO, ZWO ASI178MC & PHD2

M31 with AT 2023brc (T+13.3d) Position of reported transient is shown by white circle

Annotated CCD Image (50% size, square root scale) 4 x 180s exposure (average combine), 3x3 binning, Clear Filter 2023-02-26 20:44 UT (#1102061-65) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

M31 with AT 2023brc - 2023-02-26 (T+13.3d) Image below (2023-02-26.858) was taken 13.3 days after discovery of 2023brc Position of reported transient (not visible) is shown by white circle

Annotated CCD Image (100% size, square root scale) 4 x 180s exposure (average combine), 3x3 binning, Clear Filter 2023-02-26 20:44 UT (#1102061-65) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2023brc (M31) on Transients 2023 Page >>

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