Cr463
Open Cluster in Cassiopeia
About
A large, sparse open cluster in Cassiopeia, far enough north of the Milky Way's main band that it stands out. Collinder described it in 1931; it has no NGC number. Sources give 57–73′ across, with distance estimates from about 2,300 to 2,900 light-years.
Imaging tips
- One imager used a 200 mm lens with 52 five-minute exposures (about 4 h 20 min) and covered a field 7.6° wide.
- Another imager took a 1° field with 11 h 27 min in total: 6 h 15 min of luminance and about 1 h 44 min per colour filter.
- A cluster of stars, so broadband is the right choice.
- Best in October and November; it peaks near 68° from 50°N.
Facts
- Size
- 73′
- Magnitude
- 5.7
- Coordinates
- RA 1h 48.1m, Dec +71° 44′
- Framing, APS-C
- 330–550 mm
- Framing, full frame
- 510–850 mm
- Best months
- Oct, Nov
- Peak altitude
- 68° from 50°N, 53° from 35°N