H-NGC3675
Galaxy in Ursa Major
About
A spiral galaxy in Ursa Major, about 50 million light-years away and roughly 100,000 light-years across, the largest member of its home group, the southern part of the Ursa Major clustering. Its core is a LINER, and Hubble measurements put a black hole of 10 to 39 million solar masses there. It is in the Herschel 400.
Imaging tips
- Only 6′ × 3′, so it is too small to frame: use a long focal length and a fine pixel scale.
- Faint for its size at 22.2 mag/arcsec², so plan many hours of broadband data.
- One imager collected 18 hours 25 minutes of LRGB between 21 February and 18 March, more than half of it (9 hours 40 minutes) in luminance.
- Best around February and March; it peaks near 84° from 50°N.
Facts
- Size
- 6′ × 3′
- Magnitude
- 10.4
- Coordinates
- RA 11h 26.2m, Dec +43° 35′
- Framing, APS-C
- longer than 4000 mm
- Framing, full frame
- longer than 4000 mm
- Best months
- Feb, Mar
- Peak altitude
- 84° from 50°N, 81° from 35°N