Cr338
Open Cluster in Scorpius
About
An open cluster in Scorpius. From its Gaia parallax of 1.52 mas it lies about 2,100 light-years away, and SIMBAD links 545 member stars to it. SIMBAD gives its width as 29′ and its visual magnitude as 8.0.
Imaging tips
- At 29′ it spans about half a degree, so a field of around 1° holds it with margin.
- Broadband is the right choice for an open cluster; the stars are the subject.
- Low in the sky: it peaks near 2° altitude from 50°N. Best in June.
Facts
- Size
- 29′
- Magnitude
- 8.0
- Coordinates
- RA 17h 37.9m, Dec −37° 39′
- Framing, APS-C
- 840–1390 mm
- Framing, full frame
- 1280–2130 mm
- Best months
- Jun
- Peak altitude
- 2° from 50°N, 17° from 35°N