Deep Sky Object in Autumn
Andromeda I (Galaxy in Andromeda)

Click on image to enlarge

Date & Time: Aug 10 2024, from 25:41 to 26:53 JST(+0900)
Composed 10 shots with 8 minutes exposed
Optical: TAKAHASHI 16cm(6.3") epsilon (f=530mm, F3.3)
with LPS-D1 Light-pollution suppression filter
Auto-guided with TAKAHASHI JP Equatorial & SBIG STV
CMOS Camera: ZWO ASI2600MC Pro (Cooled temp.: -5°C)
Location: Ooizumi, Hokuto city, Yamanashi pref.

Camera Settings: Recording format...16bit FITS, converted to 16bit TIFF(6248×4176)
Device Size...23.5×15.7mm, Gain...100


Andromeda I / Galaxy, type dSph
R.A.00h 45m 41.5s (2000.0)
Dec.+38°02' 09" (2000.0)
Apparent Size4.0×3.0'
Radial VelocityN/A
Magnitude13.6
Distance2.4 million light yrs.
Group of GalaxiesLocal Group
Other IDsPGC 2666
This is a faint dwarf elliptical galaxy located nearly in the center of Andromeda, positioned 3.5 degrees south of the Andromeda Galaxy (M31). It was discovered in 1970 and is one of M31's companion galaxies. With a long diameter of about 4 arc minutes and a brightness of 13th magnitude, it is extremely faint and not visible to the telescope-aided naked eye. The distance from the Milky Way is approximately 2.4 million light-years, and its distance from M31 is estimated to be within 150,000 light-years.
This image has been cropped with an equivalent focal length of 700mm.



Cart Wheel Galaxy
UGCA 86

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