David's Astronomy Pages Images - Session 628 (2018-09-09)

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Session Notes

Hickson 77 - Galaxy Group (PGC 56123 et al)     Photometric Monitoring - Variables     - AM Her     Astrometric Monitoring - Nearby Stars   - None

- Evening Session (2.1 hours total duration including sky flats). Clear skies until 21:30 when cloud rolled in from SW ending the session early - Generally Fully Automated operation, but dropping to Manual on occasion ( Session was monitored remotely from indoors to observe operations and spot any new or recurrent issues  ) - Main aim of the session was to test a new routine for taking Sky Flats before an observing session taking images of a selection of variable stars, nearby stars and deep sky targets. - - 12" LX200 + ST-10XME for imaging - TS 80mm APO + ZWO ASI178MC for guiding - Ambient Temperature:  11°C (minimum)  (12°C sky flats) - CCD Temperature:  -10°C ( -15°C for sky flats ) (75% av. power for -10°C set) (98% av. power for -15°C, sky flats) - Notes from 2018-09-09 >>

Hickson 77 - Galaxy Group (PGC 56123 et al)

Hickson 77 (Serpens) Hickson 77 lies at centre of image

CCD Image (50% size) 3 x 180 sec exposure (average combine), 3x3 binning, C Filter 2018-09-09 20:23 UT (#628127-29) 12" LX200R  (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Hickson 77 - detail a) PGC 56122 (catalog mag +16.4)  b) PGC 56123 (catalog mag +16.2) c) PGC 56121 (catalog mag +16.0)  d)  PGC 56125 (catalog mag +17.2)

Annotated CCD Image (150% size, cropped) Image details as above

Negative CCD Image (150% size, cropped) Image details as above

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