NGC 891
Andromeda · 20 - 24/10/2013 - 17:00 UTC · Talahashi TSA 102 f/8
About the target
NGC 891 (also known as Caldwell 23) is an edge-on unbarred spiral galaxy (opens in a new tab) (actually barred (opens in a new tab)) about 30 million (opens in a new tab) light-years (opens in a new tab) away in the constellation (opens in a new tab) Andromeda (opens in a new tab). It was discovered by William Herschel (opens in a new tab) on October 6, 1784. The galaxy is a member of the NGC 1023 group of galaxies (opens in a new tab) in the Local Supercluster (opens in a new tab). It has an H II nucleus. The object is visible in small to moderate size telescopes (opens in a new tab) as a faint elongated smear of light with a dust lane (opens in a new tab) visible in larger apertures. In 1999, the Hubble Space Telescope (opens in a new tab) imaged NGC 891 in infrared (opens in a new tab).In 2005, due to its attractiveness and scientific interest, NGC 891 was selected to be the first light (opens in a new tab) image of the Large Binocular Telescope (opens in a new tab). In 2012, it was again used as a first light image of the Discovery Channel Telescope (opens in a new tab) with the Large Monolithic Imager.
Text from Wikipedia.
© Nikos Paschalis
Observing log
- Object
- NGC 891
- Constellation
- Andromeda
- Distance + Ap. Magnitude
- 27.3 million Light years - 10.8
- RA / DEC
- 2h:22m.33sec / +42° 20m.57sec
- Date + Time
- 20 - 24/10/2013 - 17:00 UTC
- Location
- “Nunki Observatory” - Skiathos
- Optics
- Talahashi TSA 102 f/8
- Tools
- The SKY X
- Camera
- SBIG ST10XE with CFW10 (Astrodon filters)
- Exposure Time
- Luminance: 48 X 300 sec (1X1) RGB: 4 X 600sec (1X1)
- More Details
- Environment Temperature: 15 °C Camera Temperature 0 °C
- Mount
- Paramount ME
- Guiding
- Self guided
- Processing Details
- Photoshop, Maxim, CCDsoft
- Notes
- Weather:6/10 - Transparence: 4/6 - Humidity: 75-84 %