David's Astronomy Pages CCD Images - Session 683 (2019-08-22)

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Session Notes

Kn 61 - Planetary Nebula (Attempt)     NGC 6885 - Open Cluster (H VIII-20)     Palomar 13 - Globular Cluster     Variable Stars (photometric monitoring)   - U And, FG Sge     Nearby Stars (astrometric monitoring)  - None

- Full night session,  Duration 5.4 hr (net) Session operated in fully automated mode, with initial monitoring of the 1st target only - Main aim of the session was general observing with mix of variable stars, nearby stars, comets and deep sky targets, and test integration with updated AstroWeather program which generates Weather Forecast graphs for the observatory, and test the Observatory Manager software for correct and safe operation through a generally cloudy night.     - 12" LX200 + ST-10XME for imaging - TS 80mm APO + ZWO ASI178MC for guiding & imaging - Ambient Temperature:  15.0°C  (min) in observatory (outdoors 1°C cooler,  Dew heaters on manual, ~ 50% power ) - CCD Temperature:  -10°C  (74% av. power) - Notes from 2019-08-22 >>

Kn 61 - Planetary Nebula (attempt)

Kn 61 / Soccer Ball Nebula, SDSSJ192138.93+381857.2 (Lyra) Ast. Now DeepSky Challenge Object, Sep 2012 Location of Kn 61 is shown by white circle. The relatively bright star on edge of Kn 61 circle is GSC 3134:1188 (mag +10.45)

Annotated CCD Image (50% size, linear scale) 5 x 120s exposure (average combine), 3x3 binning, C Filter 2019-08-22 21:16 UT (#683003-09) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Kn 61 (attempt) - Detail No sign of the faint planetary nebula in this image (10 min total exposure time)

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

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

Reference Image : Long Exposure LOIII-RGB-Composite Images of Kn61 see http://www.capella-observatory.com/ImageHTMLs/PNs/Kn61.htm

Image modifications : resize, negative, gamma, grey scale

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NGC 6885 - Open Cluster (H VIII-20)

NGC 6885 \ H VIII-20 (Vulpecula) Central star is 20 Vulpeculae (mag +5.9)

CCD Image (70% size) 6 x 30s exposure (average combine), 3x3 binning, C Filter 2019-08-23 01:59 UT (#683043-48) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

NGC 6885 \ H VIII-20 - Earlier Image (2007)

CCD Image (100%) 3 x 120s exposure, 2x2 binning, C filter  2007-04-05 03:05h UT (#189310-12) 8" LX200 + ST-7E

NGC 6885 \ H VIII-20 - Earlier Wider View Image (2007)

CCD Mosaic 3x4  (50%) 60s exposure, 2x2 binning, C filter 2007-04-05  03:16 UT (#189313-24) 8" LX200 + ST-7E [ Full Size ]

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Palomar 13 - Globular Cluster

Palomar 13 (Pegasus) Pal 13 is only just visible in this single 60s exposure. Other frames were affected by passing cloud Pal 13 is one of the dimmest globular clusters within the Palomar catalog.  It's apparent diameter of approximately 1.8 arc-minutes also makes it one of the smallest member of the catalog

Annotated CCD Image (50% size) 60s exposure (single frame), 3x3 binning, C Filter 2019-08-22 21:34 UT (#683020) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

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