Caldwell 37 (C37) with the VC200L: one night in July 2026, 1 h 40 min. Location: Koblenz.
Caldwell 37 (C37) with the VC200L: one night in July 2026, 1 h 40 min. Location: Koblenz.
C 37 is an open star cluster in the constellation Vulpecula, lying about 4,740 light-years away, and reaches its annual culmination at astronomical midnight and is best observed late July.