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Last update: 2019-03-13

VdS FG

- Open Clusters (Tri) -

And (3) Cep (23) CVn (1) Lac (6) Per (13) Sgr (5)
Aql (5) CMa (3) Cyg (23) Lyr (2) Pup (6) Tau (6)
Aur (8) CMi (1) Gem (10) Mon (7) Sct (3) Tri (1)
Cam (3) Cnc (3) Her (1) Oph (3) Ser (2) UMa (1)
Cas (25) Com (1) Hya (1) Ori (11) Sge (1) Vul (5)

Collinder 21 (OC)

DSS
Image source: DSS II (blue) - 12×12'
Name: Collinder 21
Type: OC
Constellation: Tri
Coordinates: 01h50m07.00s / +27°05'00.00"
Brightness / Size: v8.2 mag / 6.0x6.0'
8" f/6, 37x, Bortle 4
Apparent group of brighter stars forming a semicircle.
EASY