David's Astronomy Pages CCD Images - Session 741 (2020-01-17)

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Session Notes

38P/Stephan-Oterma - Comet (Attempt) C/2017 T2 (PanStarrs) - Comet     NGC 4222 - Spiral Galaxy     Variable Stars (photometric monitoring)   - SY Cnc, R CrB, U Her, DY per, GK Per     Nearby Stars (astrometric monitoring)  - None

- All night session (7.7 hours total). Dome Shutter closed at 02:21 - Main aims of the session was to test telescope and observatory systems following problems in previous night's session     - 12" LX200 + ST-10XME for imaging - TS 80mm APO + ZWO ASI178MC for guiding & imaging - Ambient Temperature:  1°C (min) (Dew heaters on auto) - CCD Temperature:  -15°C/-20°C  (57%/67% av. power) - Notes from 2020-01-17 >>

Observing Result

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38P/Stephan-Oterma - Comet (attempted observation)

38P/Stephan-Oterma - 2020-01-18 (passing through Virgo) Sun Distance 4.74 AU Earth Distance 4.64 AU (693.8 million km) Expected position of comet (not visible) is shown by white circle		38P/Stephan-Oterma - 2020-01-18, Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra 10.24 arcsec/hr, Dec 3.66 arcsec/hr) Expected position of comet (not visible) is shown by white circle
Annotated CCD Image (50% size, square root scale) 6 x 30s exposure (average combine), 3x3 binning, C Filter 2020-01-18 06:38 UT (#741245-51) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2		CCD Image (100% size, square root scale, cropped) 6 x 30s exposure (average combine), 3x3 binning, C Filter 2020-01-18 06:38 UT (#741245-51) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
Images of 38P/Stephan-Oterma on Comets 2020 Page >>

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C/2017 T2 (PanStarrs) - Comet

C/2017 T2 (PanStarrs) - 2020-01-18  (passing through Perseus) Sun Distance 2.15 AU (approaching) Earth Distance 1.56 AU (234.1 million km) Bright star on right of image is HIP 12302 (mag 7.99)		C/2017 T2 (PanStarrs) - 2020-01-18, Detail Autoguided on an offset star using Lock Shift set at the comet's rate of motion (Ra -79.98 arcsec/hr, Dec 11.26 arcsec/hr)
CCD Image (50% size, square root scale) 2 x 45s exposure (average combine), 3x3 binning, C Filter 2020-01-18 01:23 UT (#741212-13) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2		CCD Image (100% size, log scale, cropped) 5 x 45s exposure (average combine), 3x3 binning, C Filter 2020-01-18 01:26 UT (#741212-20) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
Images of C/2017 T2 (PanStarrs) on Comets 2019 Page
Images of C/2017 T2 (PanStarrs) on Comets 2020 Page

False Colour Image of C/2017 T2 (PanStarrs) - 2020-01-18

False Colour CCD Image (50% size, log scale) 5 x 45s exposure (average combine), 3x3 binning, C Filter 2020-01-18 01:26 UT (#741212-20) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

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NGC 4222 - Spiral Galaxy

NGC 4222 (Coma Berenices) Flat Galaxy Atlas

CCD Image (50% size, linear scale) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2020-01-18 01:12 UT (#741206-10) 12" LX200R (at f/10.4) + ST-10XME (unguided)

NGC 4222 - Detail Unguided

CCD Image (100% size, linear scale, cropped Image details as above

NGC 4222 - Earlier Image (2019-11-19) (poor sky conditions, galaxy barely visible)

CCD Image (100% size, linear scale, cropped 5 x 180s exposure (average combine), 3x3 binning, C Filter 2019-11-19 05:30 UT (#723572-76) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

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