David's Astronomy Pages Images - Session 622 (2018-08-30)

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Session Notes

37P/Forbes - Comet     NGC 6804 - Planetary Nebula (PLN 45- 4.1)     Photometric Monitoring - Variables     - RX And, U And, Z And, TT Ari, CI Cyg,     BL Lac, CY Lyr, DY Per, GK Per, ER UMa   SS Her attempt failed due to CCD frosting     Astrometric Monitoring - Nearby Stars   - Ross 248 (And HH), 61 Cyg, Groombridge 34, Teegardens Star

- Night Session (4.1 hours duration). - Fully Automated operation  (Session was monitored remotely from indoors to observe and intervene if required). - Main aim of the session was to acquire images of a selection of variable stars, nearby stars, star clusters and deep sky targets. Secondary aims were to test transfer and reporting of AllSky Cloud Measurements for current and next targets, and confirm other code was working as expected. - - 12" LX200 + ST-10XME for imaging - TS 80mm APO + ZWO ASI178MC for guiding - Ambient Temperature:  6°C (minimum) - CCD Temperature:  -15°C (77% av. power) & -20°C (85% av. power) - Notes from 2018-08-30 >>

UGC 2536 - Spiral Galaxy

UGC 2536  (Perseus) UGC 2536 (catalog mag +15.6),   PGC 11664 (catalog mag +15.1),  PGC 2182550 (catalog mag +16.8)

Annotated CCD Image (75% size, cropped) 5 x 180s exposure (average combine), 3x3 binning, C Filter  2018-08-31 00:44 UT (#622201-05) 12" LX200R  (at f/10.4) + ST-10XME (Autoguided on a guide star using TS 80mm APO + ZWO ASI178MC)   (see later Image 2018-12-03 )

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37P/Forbes - Comet

37P/Forbes (passing through star-field in Pisces) Two images showing motion of the comet over 4.75 hrs Comet is marked by white cross hairs

2018-08-30 22:00 UT (#622043-47)

2018-08-31 02:43 UT (#622307-11)

Annotated CCD Images (100% size, cropped) 5 x 60 sec exposure (average combine), 3x3 binning, C Filter 12" LX200R  (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

37P/Forbes - Earlier Image

Annotated CCD Image (100% size, cropped) 5 x 60 sec exposure (average combine), 3x3 binning, C Filter 2018-08-31 23:09 UT (#623111-15) 12" LX200R  (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

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NGC 6804 - Planetary Nebula (PLN 45- 4.1)

NGC 6804 was the Deep Sky Challenge object in Sep 2018 edition of Astronomy Now magazine

NGC 6804 / PLN 45- 4.1 (Aquila)

CCD Image (50% size) 5 x 60 sec exposure (average combine), 3x3 binning, C Filter 2018-08-30 22:21 UT (#622063-67) 12" LX200R  (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 (Average Guide Error 1.7" rms, PHD2)

NGC 6804 / PLN 45- 4.1 - detail

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

CCD Image (250% size, cropped) Image details as above

NGC 6804 / PLN 45- 4.1 - Spectroscopy

'Double image' in spectroscopic image taken with Star Analyser 100SA is typical of Planetary Nebula and helps confirm NGC 6804 as belonging to this family of objects 0 order image (faint) to left, 1 order image in middle

CCD Image (100% size, rotated, cropped) 5 x 90 sec exposure (average combine), 3x3 binning, S Filter 2018-08-30 22:29 UT (#622068-72) 12" LX200R  (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

CCD Image (50% size) Image details as above

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