NGC 1954: A Distant Galactic Interaction (Annotated) (Alex Woronow)

Celestial hemisphere: Southern · Constellation: Lepus (Lep) · Contains: IC 2132 · NGC 1954 · NGC 1957

NGC 1954: A Distant Galactic Interaction (Annotated)

NGC 1954: A Distant Galactic Interaction

OTA: CDK24
Camera: Moravian 61000 Pro
Observatory: Heaven's Mirror
Date of Capture: Jan '24
Date of Processing: Feb '24

Exposures:
R: 13 x 900 sec
G: 17 x "
B: 14 x "
H: 10 x 900 sec
Total Exposure time: 13.5 hours
Image Width: 19.5 arc-minutes

Processing Tools:
1.   Commercial: PixInsight, Topaz, Photo Director 365, Radiant Photo
2.   Pixinsight Addons: NoiseXTerminator, BlurXTerminator, StarXTerminator, GraXpert
3.   My Scripts: AC_Restar, Subframe Weighting Tool (Excel w/ J. Hunt), StarTweaker

Target Description:
A distorted galaxy, NGC 1954 undoubtedly had a close gravitational encounter with another galaxy. Perhaps that galaxy was NGC 1957 at the top of this image, as it also shows gravitational distortions. However, I did not find a definitive statement to that effect. (The tail stretching toward NGC 1957 lies well to the foreground of that galaxy, and the geometry devolves from our viewing direction.)
Considerable interstellar gas appears in this picture and somewhat blurs many stars. Being poorly versed in identifying the local interstellar gases, I presume this is either a Loop I or a Local Bubble (or both) manifestation—Does anyone have more information?

Processing Description:
In addition to the suite of 900s subframes enumerated above, Heaven's Mirror provided a set of 180s RGB subs to ameliorate the saturation of the stars. However, star saturation was not encountered, and those subs were not used.

Statistics:
Distance: 146K ly
Apparent Magnitude: 12.5
Average Surface Magnitude: 23.6
Apparent Span: about3.6x1.8 arc-minutes
Pixel Span at Target: 2.6E11 km

Alex Woronow

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Status	Advanced success
Started	...
Astrometry.net job	9154273
PixInsight job	FJR4DH2KPQBAT2FI31HWUBVKM6VVLE43
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	05h32m44s.212
RA (top/left)	05h33m24s.432
RA (top/right)	05h32m04s.930
RA (bottom/right)	05h32m04s.910
RA (bottom/left)	05h33m24s.501

Dec (center)	-14°02′42″.35
Dec (top/left)	-13°54′21″.95
Dec (top/right)	-13°54′23″.60
Dec (bottom/right)	-14°11′01″.96
Dec (bottom/left)	-14°11′01″.41

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NGC 1954: A Distant Galactic Interaction (Annotated)

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