David's Astronomy Pages Images - Session 1299 (2025-01-22)

Images (S1298)

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Image (S1300)

Objects	Session Notes
29P/Schwassmann-Wachmann - Comet   Variable Stars (photometric monitoring) - None   Nearby Stars (astrometric monitoring) - None	- Attempted all-night session (5.5 hr) delayed by and significantly affected by cloud. Only 1 target recorded. - 12" LX200 + ST-10XME for imaging - TS 80mm APO + ZWO ASI178MC for guiding & imaging - Ambient Temperature: -0.5°C (min) - CCD Temperature:  -25°C - Notes from 2025-01-22 >> - -

Observing Result

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29P/Schwassmann-Wachmann  - Comet

29P/Schwassmann-Wachmann - 2025-01-23 (passing through Leo) Sun Distance 6.26 AU Earth Distance 5.37 AU (802.7 million km)		29P/Schwassmann-Wachmann - 2025-01-23 Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra -14.1 arcsec/hr, Dec 2.8 arcsec/hr)
Annotated CCD Image (50% size, square root scale) 2 x 90s exposure (average combine), 3x3 binning, Clear Filter 2025-01-23 02:26 UT (#1299010-13) 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 Comet 29P Schwassmann-Wachmann on Comets 2025 Page  >>

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