Silver Sliver Galaxy
Galaxy

Silver Sliver Galaxy

C 23 · Andromeda
These photons are ~27 million years old
UV/IR
Date
2026-01-02
Location
53.5481° N, 1.4616° W
Integration
2m (10 × 10s)
Software
ZWO Seestar app
Notes
—
Plate solve
Centre RA
2h 21m 53.3s
Centre Dec
+42° 06′ 50″
Field
42.8′ × 76.0′
Pixel scale
2.38″/px
Orientation
-125.4° E of N
TelescopeZWO Seestar S50
CameraZWO Seestar S50 Camera
RigFamily Holiday Rig
Captured from · United Kingdom
53.5481° N, 1.4616° W · open map ↗

Where to find it

Interactive sky chart centred on 2 21 53.3 +42 06 50, with constellation stick figures overlaid. Locate shows the whole constellation with the target ringed; Field zooms to the close-up. Drag to pan, scroll to zoom, click any star to identify it. Imagery: DSS colour survey via CDS Aladin Lite. Constellation figures © Dominic Ford (GPLv3).

The quintessential edge-on spiral, often used as a textbook example of a galaxy seen exactly from the side. The dark dust lane bisecting the disc is remarkably prominent. Deep imaging reveals looping filaments of dust extending well above the plane.

Frequently asked questions

What kind of object is C 23?
C 23 is a galaxy.
Which constellation is C 23 in?
C 23 lies in the constellation Andromeda.
How far away is C 23?
The light in this image left C 23 roughly ~27 million years ago, so that is how far back in time you are seeing it.
What are the coordinates of C 23?
C 23 sits at right ascension 02h 21m 53s and declination +42° 06′ 50″ (J2000).
When is the best time to photograph C 23?
C 23 is circumpolar from around 54°N — it never sets, and rides highest (about 79° altitude) on evenings around October.
What equipment was used to photograph C 23?
This image of C 23 was captured with ZWO Seestar S50 and ZWO Seestar S50 Camera.
How much exposure time went into this image?
This image of C 23 represents 2m (10 × 10s) of total integration time.