David's Astronomy Pages Images - Session 1126 (2023-08-06)

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Images (S1127)

Objects	Session Notes
NGC 6891 - Planetary Nebula     -  NGC 5532 attempt failed (due to cloud above the western horizon)     Variable Stars (photometric monitoring) - None      Nearby Stars (astrometric monitoring) -  None   -	- Attempted all night session (0.8 hrs), but ended early when the sky became overcast, which lasted for the remainder of the night.     - 12" LX200 + ST-10XME for imaging - TS 80mm APO + ZWO ASI178MC for guiding & imaging - Ambient Temperature: 7.5°C (min) - CCD Temperature:  -10° / -15° C - Notes from 2023-08-06 >>     -

NGC 6891 - Planetary Nebula

NGC 6891 (Delphinus)  Ast. Now Deep Sky Challenge Object, Aug 2023 [ Deep Sky Challanges (Ast.Now) ]   [ Planetary Nebula ]

Annotated CCD Image (50% size, log scale) 3 x 30s exposure (average combine), 3x3 binning, Clear Filter 2023-08-06 22:31 UT (#1126011-24) 12" LX200R  (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

NGC 6891 - Detail

Annotated CCD Image (150% size, log scale, cropped) 4 x 45s exposure (average combine), 2x2 binning, Clear Filter 2023-08-06 22:32 UT (#1126013-21) 12" LX200R  (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

NGC 6891 - Spectra

CCD Image (100% size, rotated, square root scale, cropped) 3 x 60s exposure (average combine), 2x2 binning, S Filter 2023-08-06 22:30 UT (#1126012-17) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

NGC 6891 - Earlier Image (2018)

CCD Image (100% size, cropped) 7 x 30 sec exposure (average combine), 3x3 binning, C Filter 2018-07-26 01:30 UT (#616165-71) 12" LX200R  (at f/10.4) + ST-10XME

NGC 6891 - Earlier Image (2017)

Annotated CCD Image (50% size) 2 x 30s exposure (average combine), 3x3 binning, C Filter 2017-11-02 19:41h UT (#603096-98) 12" LX200R  (at f/10.4) + ST-10XME

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