David's Astronomy Pages CCD Images - Session 797 (2020-08-08)

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Images (S798)

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Session Notes

NGC 6741 - Planetary Nebula (Phantom Streak Nebula) Berkeley 91 - Open Cluster Berkeley 102 - Open Cluster Berkeley 95 - Open Cluster Berkeley 100 - Open Cluster Berkeley 1 - Open Cluster     Variable Stars (photometric monitoring) - RX And, S Cyg, SS Cyg, AM Her, U Her, FG Sge - Z And attempt failed due to cloud     Nearby Stars (astrometric monitoring) - HH And, 61 Cyg, Groombridge 34

- All Night Session (3.7 hours total).  - Main aims of the session was to test new AutoStart mode of Observatory Operations , test 'Foc2 Wide Range Auto-Focusing'  and acquire images of a selection of targets if conditions allowed.     - 12" LX200 + ST-10XME for imaging - TS 80mm APO + ZWO ASI178MC for guiding & imaging - Ambient Temperature: 9°C (min) - CCD Temperature:  -10°/-15°C  - Notes from 2020-08-08 >> - Notes from Observing Attempt 2020-08-06 >>

NGC 6741 - Planetary Nebula (Phantom Streak Nebula, PLN 33- 2.1)

NGC 6741 (Aquila) Phantom Streak Nebula, PLN 33- 2.1

Annotated CCD Image (50% size, linear scale) 3 x 30s exposure (average combine), 3x3 binning, C Filter 2020-08-08 22:22 UT (#797003-06) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

NGC 6741 - Detail The object looks very stellar-like in the image below - it appears similar to the adjacent 'bright star', but may be slightly elongated, at least more than the other stars in the image which are subject to some poor RA tracking/guiding)

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

NGC 6741 - Alternate Image The object looks to be less stellar-like in the square root scaled image below - it is larger in size and has lower 'surface brightness' than the adjacent 'bright' star

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

NGC 6741 - through 'Star Analyser 100'diffraction grating The object's true identity of NGC 6741 object is shown in image below where its classic Pl.Neb spectrum allows it to be easily distinguished from the stellar spectrum of the adjacent 'bright' star (GSC 5128:756, mag +12.7)

CCD Image (100% size, linear scale, rotated, cropped) 2 x 60s exposure (average combine), 2x2 binning, S Filter 2020-08-08 22:29 UT (#797010-11) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

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

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Berkeley 91 - Open Cluster

Berkeley 91 (Cygnus) Berkeley Catalogue

CCD Image (70% size, square root scale) 6 x 30s exposure (average combine), 3x3 binning, C Filter 2020-08-08 22:40 UT (#797017-23) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Berkeley 91 - Detail

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

Berkeley 91 - Earlier Image (2020-05-06)

CCD Image (70% size, linear scale) 5 x 30s exposure (average combine), 3x3 binning, C Filter 2020-05-06 23:16 UT (#780078-84) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

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Berkeley 102 - Open Cluster

Berkeley 102 (Cassiopeia) Berkeley Catalogue

CCD Image (70% size, linear scale) 3 x 30s exposure (average combine), 3x3 binning, C Filter 2020-08-09 01:12 UT (#797096-98) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

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Berkeley 95 - Open Cluster

Berkeley 95 (Cepheus) Berkeley Catalogue

CCD Image (70% size, linear scale) 5 x 30s exposure (average combine), 3x3 binning, C Filter 2020-08-09 01:45 UT (#797121-26) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

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Berkeley 100 - Open Cluster

Berkeley 100 (Cepheus) Berkeley Catalogue

CCD Image (70% size, linear scale) 6 x 30s exposure (average combine), 3x3 binning, C Filter 2020-08-09 01:59 UT (#797134-39) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

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Berkeley 1 - Open Cluster

Berkeley 1 (Cassiopeia) Berkeley Catalogue

CCD Image (70% size, linear scale) 7 x 30s exposure (average combine), 3x3 binning, C Filter 2020-08-09 02:09 UT (#797142-49) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

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