David's Astronomy Pages Images - Session 1210 (2024-04-19)

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Images (S1211)

Objects	Session Notes
29P/Schwassmann-Wachmann - Comet C/2023 A3 (Tsuchinshan-ATLAS) - Comet     Variable Stars (photometric monitoring) - None      Nearby Stars (astrometric monitoring) - None	- Evening Session (2.0 hrs), before clouds became overcast Due to software problems only 2 targets were acquired during the time that sky was clear..     - 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 2024-04-19 >>     -

Observing Result

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29P/Schwassmann-Wachmann - Comet

29P/Schwassmann-Wachmann - 2024-04-19 (passing through Cancer) Sun Distance 6.20 AU (receeding slowly) Earth Distance 6.12 AU (916.0 million km)		29P/Schwassmann-Wachmann - 2024-04-19 Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra 9.27 arcsec/hr, Dec -3.69 arcsec/hr)
Annotated CCD Image (50% size, square root scale) 5 x 90s exposure (average combine), 3x3 binning, Clear Filter 2024-04-19 21:18 UT (#1210005-09) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2		Annotated CCD Image (125% size, square root scale, cropped) Image details as left
Images of 29P/Schwassmann-Wachmann on Comets 2023 Page >>
Images of 29P/Schwassmann-Wachmann on Comets 2024 Page >>

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C/2023 A3 (Tsuchinshan-ATLAS) - Comet

C/2023 A3 (Tsuchinshan-ATLAS) - 2024-04-19 (passing through Virgo) Sun Distance 2.91 AU Earth Distance 1.92 AU (286.7 million km)		C/2023 A3 (Tsuchinshan-ATLAS) - 2024-04-19 Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra -93.96 arcsec/hr, Dec 22.06 arcsec/hr)
Annotated CCD Image (50% size, square root scale) 180s exposure (single frame), 3x3 binning, Clear Filter 2024-04-19 22:58 UT (#1210015) 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) Image details as left
Images of C/2023 A3 Tsuchinshan-ATLAS on Comets 2024 Page >>

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