Cr258
Open Cluster in Crux
About
An open cluster in Crux, also listed as Harvard 5, roughly 4,300 light-years away judging from its Gaia parallax. SIMBAD puts it about 15′ across, with an integrated V magnitude near 7.1, and it lies close to the galactic plane at a latitude of about +2°.
Imaging tips
- SIMBAD gives it as about 15′ across.
- Broadband is the filter choice for an open cluster.
- Best March and April, but it never rises from 50°N or 35°N: a southern-hemisphere target.
Facts
- Size
- 15.4′
- Magnitude
- 7.8
- Coordinates
- RA 12h 27.2m, Dec −60° 46′
- Framing, APS-C
- 1570–2620 mm
- Framing, full frame
- 2410–4020 mm
- Best months
- Mar, Apr
- Peak altitude
- never rises from 50°N, never rises from 35°N