David's Astronomy Pages CCD Images - Session 692 (2019-09-11)

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Session Notes

C/2018 W2 (Africano) - Comet     NGC 6539 - Globular Cluster       Attempted imaging of Koposov 2 failed due to incorrect coords (database has been fixed since)     Variable Stars (photometric monitoring)   - RX And, U And, Z And, CY Cyg, SS Cyg, BL Lac, CY Lyr, FO Ori, FG Sge, RR Tau     Nearby Stars (astrometric monitoring)  - HH And, Barnards Star, 61 Cyg, EV Lac

- Full night session (6.6 hours) Session operated in fully automated mode with some  interventions & monitoring during the first half of the session - Main aim of the session was to aquire images of a range of deep sky targets and one or two comets Conditions relatively good, but interruptions due to cloud later in session.  Bright sky , moon at 95% phase     - 12" LX200 + ST-10XME for imaging - TS 80mm APO + ZWO ASI178MC for guiding & imaging - Ambient Temperature:  Falling  to 10°C (min). Outdoors 9°C (min) (Dew heaters on manual,  45%) - CCD Temperature:  -10°/-15°C  (65 / 75% av. power) - Notes from 2019-09-11 >>

C/2018 W2 (Africano) - Comet

C/2018 W2 (Africano) (passing through Andromeda) Sun Distance 1.46 AU Earth Distance 0.68 AU (102.0 million km)		C/2018 W2 (Africano) - Detail Frames aligned on comet (stars appear trailed due to movement of comet and somewhat bloated due to an image quality issue)
CCD Image (50% size) 2 x 45s exposure (average combine), 3x3 binning, C Filter 2019-09-11 22:26 UT (#692102-03) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2		CCD Image (100% size, log scale, cropped) 9 x 45s exposure (average combine), 3x3 binning, C Filter 2019-09-11 22:26 UT (#692099-107) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
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NGC 6539 - Globular Cluster

NGC 6539 (Serpens)

CCD Image (50% size, square root scale) 5 x 30s exposure (average combine), 3x3 binning, C Filter 2019-09-11 21:49 UT (#692062-68) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

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