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Objects Session Notes
10P/Tempel - Comet AT2021abed - Type ulens? Transient Variable Stars (photometric monitoring) - None Nearby Stars (astrometric monitoring) - None
- Evening session 5.6 hours - First Session using new Observatory Computer
(due to failure of previous computer in last session, 2021-12-05)- Only 2 targets were successfully imaged during session. This was due to a show-stopping 'SideOfPier' issue when trying to guide on targets lying west of Meridian due to Guide Calibration being flipped. - 12" LX200 + ST-10XME for imaging - TS 80mm APO + ZWO ASI178MC for guiding & imaging - Ambient Temperature: -3°C (min) - CCD Temperature: -25°C - Notes from 2021-12-10 >> [ Local Files >> ]
10P/Tempel (passing through Taurus) Sun Distance 2.73 AU (receeding) Earth Distance 1.80 AU (269.4 million km) Position of comet shown by white cross-hairs |
10P/Tempel - 2021-12-05, Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra -33.53 arcsec/hr, Dec 7.17 arcsec/hr) |
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Annotated CCD Image (50% size, square root scale) 3 x 180s exposure (average combine), 3x3 binning, C Filter 2021-12-10 20:59 UT (#940012-14) 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) Image details as left |
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Images of 10P/Tempel on Comets 2021 Page >> |
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AT2021abed (Camelopardalis) AT2021abed (Type: ulens?) discovered 2021-10-06.764 UT by Gaia Alias: Gaia21epq Tranisent alert triggered by Gaia at mag +14.2 compared to a historic mag value of + 14.49 [ Gaia21epq ] |
Annotated CCD Image (50% size, square root scale) 4 x 180s exposure (average combine), 3x3 binning, C Filter 2021-12-10 20:42 UT (#940004-07) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
AT2021abed - Detail Image below (2021-12-10.857) was taken 65.1 days after discovery of 2021abed |
Annotated CCD Image (125% size, square root scale, cropped) 4 x 180s exposure (average combine), 3x3 binning, C Filter 2021-12-10 20:42 UT (#940004-07) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
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This Web Page: | CCD Images - Session 940 (2021-12-10) |
Last Updated : | 2024-05-27 |
Site Owner : | David Richards |
Home Page : | David's Astronomy Web Site |