returned to ACO 1656 (Halifax)

Asked BGO to try ACO 1656 again (centred on star GSC 01995 02059). Last attempt, 7 Apr '20.

Luminance only, 13 seconds subexposures, 10 stacked shots. FITS Liberator, GIMP. North is up; east is left.

Log method used for stretch. No moonlight. Also, I used the SOM option, side of meridian, to force the capture when to the west. Hopefully a bit less light pollution then. A far better result.

OK. Let's ID things... This is gonna take a while.

Thanks to SkyTools 3 Pro, I was able to identify most of the fuzzies in the image. You'll want to embiggen to read the annotations.

Corrected...

Wow. 125 objects!

First, the galaxies...

• IC 3960A aka MCG 5-31-56, PGC 44552. Small, dim, round fuzzy.
• IC 3963 aka MCG 5-31-61, PGC 44567. Round, small, smooth.
• IC 3973 aka PGC 44612. Fairly bright while small. Irregular.
• IC 3976 aka PGC 44603. Elliptical, small, somewhat bright.
• IC 3998 aka PGC 44664. Elliptical or canted spiral. Medium bright core.
• IC 4011 aka PGC 44705. Round elliptical, medium bright, small.
• IC 4012 aka PGC 44714. Somewhat bright core, oval ball.
• IC 4021 aka MCG 5-31-80, PGC 44726. Round, small, somewhat bright core.
• IC 4026 aka PGC 44749. Small, medium bright oval patch. Or a spiral?
• IC 4040 aka MCG 5-31-85, PGC 44789. Diffuse patch. Maybe an irregular galaxy.
• IC 4041 aka MCG 5-31-86, PGC 44802. Small, soft elliptical. Not round.
• IC 4042 aka PGC 44808. Small but bright elliptical.
• IC 4045 aka MCG 5-31-88, PGC 44818. Possibly an elliptical. Bright, oval.
• IC 4051 aka MCG 5-31-90, UGC 8129, PGC 44832. Round, medium size, bright core. Elliptical.
• LEDA 83734. Very small, dim, round.
• LEDA 83740. Small, dim. Odd shape.
• LEDA 83745. Almond shape, small, dim.
• LEDA 83750. Oblong small dim fuzzy.
• LEDA 83751. Small round elliptical, south-west of NGC 4911.
• LEDA 93697. Horizontal smudge, very faint, small.
• LEDA 126752. Very small dim round lint ball.
• LEDA 126754. Tiny blotch. Irregular.
• LEDA 126756. Barely detectable. Very smudge, small.
• LEDA 126758. Barely visible, nearly rounded smudge.
• LEDA 126759. Very small, round.
• LEDA 126760. Very dim small extended patch.
• LEDA 126761. Barely visible. Small smudge.
• LEDA 126762. Extremely faint, small. Barely detectable.
• LEDA 126763. Wouldn't know it was there. Extremely faint.
• LEDA 126764. Barely visible, small smudge.
• LEDA 126765. Very dim, very small, round fuzzy.
• LEDA 126767. Medium sized but very dim blob.
• LEDA 126768. Barely detectable. Very small, very faint. Round.
• LEDA 126771. Barely visible, extremely faint smudge.
• LEDA 126775. Irregular. Barely visible. Small.
• LEDA 126777. Barely visible. Small smudge.
• LEDA 126778. Irregular. Barely visible. Small.
• LEDA 126779. Stretched smudge. Barely visible.
• LEDA 126780. Barely visible. Very faint smudge.
• LEDA 126781. Very small. Barely visible.
• LEDA 126784. Barely detectable. Small.
• LEDA 126787. Barely detectable. Strange shape.
• LEDA 126789. Very faint, diffuse, small.
• LEDA 126790. Wow. Medium small, very dim.
• LEDA 126791. Stretched. Very dim. Rather small.
• LEDA 126792. Barely visible. Very faint small smudge.
• LEDA 126794. Very faint, very small, nearly round.
• LEDA 126799. Very small, very faint.
• LEDA 126800. Small, very faint, diffuse.
• LEDA 1819490. Barely visible. Small elongated smudge.
• LEDA 1820864. Barely visible. Medium size elongated patch.
• LEDA 1820946. Barely visible. Medium size patch.
• LEDA 1821341. Barely visible, extremely small faint smudge.
• LEDA 1821892. Very diffuse, small, very faint.
• LEDA 1822111. Quite diffuse, small, very faint.
• LEDA 1822502. Faint small blotch. One of two?
• LEDA 1822726. Very faint. Slightly larger. Irregular.
• LEDA 1822852. Very faint. Slightly small. Diffuse.
• LEDA 1826064. Very small, very dim.
• MCG 5-31-63 aka PGC 44560. Oval. Somewhat dim.
• Markarian 60 aka PGC 44716. Small nearly-round elliptical, medium bright core.
• NGC 4864 aka MCG 5-31-58, PGC 44566. Small, round, medium bright. A twin?
• NGC 4865 aka MCG 5-31-64, UGC 8100, PGC 44578. Canted spiral or elliptical? I can't tell. Small, bright core. Thin oval. 
• NGC 4867 aka MCG 5-31-62, PGC 44568. Round, small, medium bright.
• NGC 4869 aka MCG 5-31-65, PGC 44587. Nearly round with a bright large core.
• NGC 4871 aka MCG 5-31-66, PGC 44606. Elliptical? Spiral? Very hard to tell. Small core.
• NGC 4872 aka MCG 5-31-68, PGC 44624. Nearly round. Compact. Bright.
• NGC 4873 aka MCG 5-31-69, PGC 44621. Small, smooth, round.
• NGC 4874 aka MCG 5-31-70, UGC 8103, PGC 44628. Large elliptical. Large bright core. Round.
• NGC 4875 aka PGC 44640. Slightly smaller than 6. Slightly different angle.
• NGC 4876 aka MCG 5-31-73, PGC 44658. Elliptical. Medium size. Smooth core.
• NGC 4882 aka MCG 5-31-76, PGC 44698. Round elliptical, medium bright core.
• NGC 4883 aka PGC 44682. Large smooth core, diffuse outer edges, medium size.
• NGC 4884 aka MCG 5-31-77, UGC 8110, PGC 44715. Large elliptical, bright core.
• NGC 4894 aka PGC 44732. Small dim edge on with a medium bright core.
• NGC 4898 aka MCG 5-31-82, PGC 44736. Assuming it is the brighter of the two round fuzzy balls.
• NGC 4906 aka PGC 44799. Small round but bright elliptical.
• NGC 4908 aka MCG 5-31-92, PGC 44828. An elliptical. Bright core.
• NGC 4911 aka MCG 5-31-93, UGC 8128, PGC 44840. Medium large face on spiral, medium bright core.
• PGC 44574. Small, nearly round, fuzz ball.
• PGC 44576. Very faint, very small.
• PGC 44581. Faint oval.
• PGC 44585. Small, round, medium bright.
• PGC 44594. Small almond shape.
• PGC 44595. Very small, dim. Not round.
• PGC 44597. Slightly dimmer than 8. Nearly round, small. South.
• PGC 44598. Slightly brighter than 7. Nearly round, small. North.
• PGC 44602. Round, dim. Possible extended north and south?
• PGC 44608. Small, round, dim.
• PGC 44609. Irregular, small, dim.
• PGC 44616. Elongated patch, something bright core.
• PGC 44635. Barely visible, small, diffuse, dim.
• PGC 44636. Small, dim. Somewhat irregular.
• PGC 44637. Barely detectable. Small.
• PGC 44644. Small, round.
• PGC 44649. Small, round, somewhat bright.
• PGC 44651. Small, round, faint.
• PGC 44652. Small, elongated, faint.
• PGC 44653. Tiny. Barely detectable.
• PGC 44654. Not quite round, small, dim.
• PGC 44656. Small, round.
• PGC 44662. Oval shape, medium bright.
• PGC 44666. Stretched, dim, small.
• PGC 44675. Medium size. Maybe a canted spiral? Double core?!
• PGC 44676. Very faint, diffuse.
• PGC 44679. Diffuse, round, medium size, somewhat bright core.
• PGC 44692. Barely visible, extremely small faint smudge. Dimmer than 3.
• PGC 44693. Barely visible, extremely small faint smudge. Slightly brighter than 2.
• PGC 44699. Edge on. Oriented north-south. Bright core.
• PGC 44704. Canted galaxy. Possibly a spiral. Bright compact core.
• PGC 44707. Medium large, edge on spiral?
• PGC 44708. Small canted spiral, soft core, immediately west of NGC 4884.
• PGC 44709. Small, dim, round. Very close to Markarian 60.
• PGC 44723. Small, oval, diffuse cotton ball.
• PGC 44740. Small nearly round glowing ball.
• PGC 44741. Small medium bright smudge. Not round.
• PGC 44763. Small round elliptical.
• PGC 44771. Medium size. Dim. Cannot discern the type.
• PGC 44773. Small dim round elliptical with a medium bright core.
• PGC 44784. Canted spiral, medium size, medium bright core.
• PGC 44792. Small kidney bean.
• PGC 44809. Small batch, irregular.
• PGC 44815. Canted spiral, small, smooth.
• PGC 44821. Very small, dim elliptical. Not round.
• PGC 44835. Very non-uniform batch.

Found a quasar too.

• PB 3185 aka Q1256+0281. Magnitude 18.20 V. Redshift (z): 0.38. Light Time: 3.8 Gyr. Barely visible. West of PGC 44585.

Unidentified:

• Small round elliptical north-east of, very near to, NGC 4898. A "GinCl" or galaxy in cluster. ACO 1656 120.
• Elongated oval south-east of PCG 44740. Aladin shows two objects here: GMP 2787 and [CTM2010] 32265.
• West of LEDA 126777. GMP 3154.
• East of bright star, medium size elongated smudge, right along diffraction spike. Possibly GMP 3202.
• Two objects north-west of bright star? Just stars it seems.
• Smudge north-west of PCG 44576. Equal to the LEDAs to the south. Might be [EDG2007] 167.
• Twin to NGC 4864. May be [EDG2007] 34.
• Small irregular smudge south-east of IC 3973. No designation proper; 2MASX J12593524+2751488.

Used Aladin 10 Desktop to identify the last few.

§

Hmmm. There are another 20 objects visible in April 7 shot, including the amazing needle galaxy IC 3949, as the mount aimed further to the west for some reason.

• IC 3947 aka PGC 44515
• IC 3949 aka MCG 5-31-52, UGC 8096, PGC 44524
• IC 3955 aka PGC 44544
• IC 3957 aka MCG 5-31-60, PGC 44554
• IC 3959 aka MCG 5-31-59, PGC 44553
• IC 3960 aka MCG 5-31-55, PGC 44551
• LEDA 83727
• LEDA 93696
• LEDA 126801
• LEDA 126809
• LEDA 126811
• LEDA 1817584
• NGC 4858 aka MCG 5-31-51, PGC 44535
• NGC 4860 aka MCG 5-31-54, PGC 44539
• PGC 44518
• PGC 44519
• PGC 44522
• PGC 44533
• PGC 44546
• PGC 44547

OK.