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Last update: 2019-03-13

VdS FG

- Open Clusters (Oph) -

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 350 (OC)

DSS
Image source: DSS II (red) - 60×60'
Name: Collinder 350
Type: OC
Constellation: Oph
Coordinates: 17h48m06.00s / +01°18'00.00"
Brightness / Size: v6.1 mag / 45.0x45.0'
8" f/6, 37x, Bortle 4
Over a field of about 1.5° a couple of bright and medium bright, loosely scattered stars.
EASY

IC4665 (OC)

DSS
Image source: DSS II (red) - 41×41'
Name: IC4665
Type: OC
Constellation: Oph
Coordinates: 17h46m18.00s / +05°43'00.00"
Brightness / Size: v4.2 mag / 41.0x41.0'
B 40mm, 8x, Bortle 5, NELM 5.5
Evident, large. Scattered brighter and moderately bright stars without concentration toward the middle.

EASY
80mm f/6.25, 25x, Bortle 5-, NELM 5.6
Very large, obvious. Some scattered brighter and moderately bright stars. About 15-20 stars.
EASY

NGC6633 (OC)

DSS
Image source: DSS II (red) - 27×27'
Name: NGC6633, H8.72
Type: OC
Constellation: Oph
Coordinates: 18h27m18.00s / +06°31'00.00"
Brightness / Size: v4.6 mag / 27.0x27.0'
80mm f/6.25, 25x, Bortle 5-, NELM 5.6
Evident. Good contrast to surrounding area. Slightly elongated with moderately bright and fainter stars. Rather scattered.
EASY