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Last update: 2017-11-14

VdS FG

- Globular Clusters (CVn) -

And (1) Boo (1) Del (2) Lyr (1) Sct (1) Vir (1)
Aql (2) Cap (1) Her (3) Oph (7) Ser (4)
Aqr (2) Com (3) Lep (1) Peg (2) Sge (1)
Aur (1) CVn (1) Lyn (1) Sco (2) Sgr (4)

M3 (GC)

DSS
© DSS II (red) - 18×18'
Name: M3, NGC5272
Type: GC
Constellation: CVn
Coordinates: 13h42m11.62s / +28°22'38.20"
Brightness / Size: v6.4 mag / 18.0x18.0'
B 40mm, 8x, Bortle 7, NELM 5.0, SQM-L 19.0
Compact with well defined edges. Very bright.

EASY
B 50mm, 7x, Bortle 8, NELM 4.0
Despite of massive light pollution (city & half moon) and large exit pupil of 7mm I could easily see M3 with direct vision as a quite small, but bright nebula.

EASY
80mm f/6.25, 25x, Bortle 7
Apparent with direct vision due to the bright, well defined center. Outer regions much fainter. At 62x the outer regions seemed slightly granulous.

EASY
4.5" f/8, 50x, Bortle 5
At 50x the outer regions appeared granulous, at 100x quite well resolvable.

EASY
120mm f/5, 18x, Bortle 7, NELM 5.0, SQM-L 19.1
Hazy sky, 1/3 moon: At 18x well defined, very bright center. The edge regions appear granular with averted vision. At 75x the edge regions are partly resolved, the cluster itself appears granular. The center is very compact.

EASY
8" f/6, 37x, Bortle 4, NELM 6.0
Extremely bright center. Outer regions granulous. At 150x the cluster was resolvable close to the center, especially the outer regions. The center was still granulous.
EASY