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

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Images (S742)

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Session Notes

NGC 4222 - Spiral Galaxy To be added     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). 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 >>

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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