NGC 891 - The Silver Sliver Galaxy
Nov 2025
@sharon
Botnang, Stuttgart
New Moon, -7 degrees and clear skies for the first take of this Galaxy!
Wikipedia says:
NGC 891 (also known as Caldwell 23, the Silver Sliver Galaxy, and the Outer Limits Galaxy) is an edge-on unbarred spiral galaxy about 30 million light-years away in the constellation Andromeda. It was discovered by William Herschel on October 6, 1784. The galaxy is a member of the NGC 1023 group of galaxies in the Local Supercluster. It has an H II nucleus.
The object is visible in small to moderate size telescopes as a faint elongated smear of light with a dust lane visible in larger apertures.
| Filter | SV240 Multi-Narrowband |
| Lights | 62 |
| Single Exposure | 180 sec |
| Total Exposure | 3 hr 6 min |
| Gain | 101 |
| Offset | 200 |
| Temp (°C) | -10.0 °C |
| Capture Dates | Moon Illumination |
| 23 November 2025 | Waxing Crescent (6.91%) |
| Camera: | Omegon VeTec571c |
| Telescope: | Omegon Ritchey-Chretien Pro RC203/1624 |
| Reducer: | Skywatcher Flatenner 0.9x Evolux-82ED |
| Guide Camera: | ZWO ASI174MM Mini |
| Guider: | Askar Off-Axis-Guider |
| Mount: | ZWO AM5N |
| Tripod: | ZWO Carbon Fiber Tripod TC40 |
| Filter Wheel: | Svbony SV226 |
| Eaf: | Gemini Automatic Star Focuser Pro |
| Dew Heater: | Svbony SV172 |
| Flat Panel: | WELZK A3 Light Pad |
| Acquisition | |
| Processing |
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