David's Astronomy Pages CCD Images - Session 899 (2021-05-31)

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Images (S900)

Objects	Session Notes
NGC 5861 - Spiral Galaxy     Variable Stars (photometric monitoring) - R CrB, AM Her, SS Her, BL Lac     Nearby Stars (astrometric monitoring) - Barnards Star	- Night session (1.8 hours) - Main aims of the session were to test latest AstroMain version and acquire a selection of variable star, nearby star, comet & deep sky targets. - Summer sky - 12" LX200 + ST-10XME for imaging - TS 80mm APO + ZWO ASI178MC for guiding & imaging - Ambient Temperature: 9.5°C (min) - CCD Temperature:  -10°/-15°C - Notes from 2021-05-31 >>    [ Local Files >> ]   -

NGC 5861 - Spiral Galaxy

NGC 5861 (Libra) NGC 5861 (Spiral Galaxy) with NGC 5858 (Elliptical Galaxy) Ast.Now Deep Sky Challenge Object, Jun 2021 [ Deep Sky Challanges (Ast.Now) ]

Annotated CCD Image  (50% size, square root scale) 6 x 90s exposure (average combine), 3x3 binning, C Filter 2021-05-31 23:49 UT (#899010-16) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

NGC 5861 - Detail Image taken under twilight sky conditions (Sun Alt -10.5°) Target to be rescheduled for darker sky condition.

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

NGC 5858 - Detail

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

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