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Last update: 2017-09-24

VdS FG

- Open Clusters & Asterisms (Tau) -

And (3) Cep (23) Cyg (23) Lyr (2) Sct (4) Vir (1)
Aql (7) CMa (3) Del (1) Mon (7) Ser (2) Vul (8)
Aqr (1) CMi (1) Dra (1) Oph (3) Sge (1)
Aur (6) Cnc (3) Gem (8) Ori (11) Sgr (5)
Cam (4) Com (1) Her (3) Peg (1) Tau (6)
Cap (1) Crv (1) Hya (1) Per (13) Tri (1)
Cas (21) CVn (1) Lac (6) Pup (6) UMi (1)

M45 (OC)

DSS
© DSS II (blue) - 120×120'
Name: M45, Pleiades, Seven Sisters
Type: OC
Constellation: Tau
Coordinates: 03h47m00.00s / +24°07'00.00"
Brightness / Size: v1.6 mag / 100.0x100.0'
Very nice, bright cluster, but mostly too large for a telescope. Around the brighter stars the embedded reflection nebulas are quite easily visible under dark skies.

naked eye, Bortle 4
Very obvious as small star group. Even under urban skies easily visible with the unaided eye.

EASY
B 40mm, 8x, Bortle 4, NELM 6.1, SQM-L 21.0
A wonderful view :)
EASY

Melotte 25 (OC)

Name: Melotte 25, Hyades
Type: OC
Constellation: Tau
Coordinates: 04h27m00.00s / +16°50'00.00"
Brightness / Size: v0.5 mag / -
naked eye, Bortle 4-, NELM 5.7+, SQM-L 20.9
Easy to see, even under brightened skies, v-shaped. Aldebaran is brightest star, but not member of the cluster. Also nice view in binoculars with large field of view.
EASY

NGC1647 (OC)

DSS
© DSS II (blue) - 45×45'
Name: NGC1647, H8.8
Type: OC
Constellation: Tau
Coordinates: 04h45m55.00s / +19°06'54.00"
Brightness / Size: v6.4 mag / 45.0x45.0'
B 40mm, 8x, Bortle 4-, NELM 5.7+, SQM-L 20.9
Chain of moderately bright stars at the edge of the cluster. The Cluster itself is relatively large, diffuse, evenly bright.

EASY
4.5" f/8, 28x, Bortle 6
Large, loosely scattered with brighter and moderately bright stars. Surrounding poor. At the edge an apparent chain of 3 bright stars.

EASY
8" f/6, 37x, Bortle 3, SQM-L 21.3
Relatively large, stars with similar magnitude, loosely scattered without visible concentration toward the middle. Star density higher than the surroundings. Overall rather evident.
EASY

NGC1746 (OC)

DSS
© DSS II (blue) - 60×60'
Name: NGC1746
Type: OC
Constellation: Tau
Coordinates: 05h03m50.00s / +23°46'12.00"
Brightness / Size: v6.1 mag / 42.0x42.0'
4.5" f/8, 28x, Bortle 6
Very large, loose with moderately bright and fainter stars and a size of approximately 1°.
EASY

NGC1807 (OC)

DSS
© DSS II (blue) - 25×25'
Name: NGC1807
Type: OC
Constellation: Tau
Coordinates: 05h10m48.70s / +16°31'19.00"
Brightness / Size: v7.0 mag / 17.0x17.0'
4.5" f/8, 28x, Bortle 6
Evident with some medium bright and fainter stars, slight concentration toward the middle. Northeastward is the open cluster NGC1817.

EASY
8" f/6, 37x, Bortle 5
Just some scattered medium bright and fainter stars visible. However the cluster was evident while sweeping over.
EASY

NGC1817 (OC)

DSS
© DSS II (blue) - 25×25'
Name: NGC1817, H7.4
Type: OC
Constellation: Tau
Coordinates: 05h12m15.00s / +16°41'24.00"
Brightness / Size: v7.7 mag / 16.0x16.0'
4.5" f/8, 28x, Bortle 6
At 28x just a handful medium bright stars. At 75x some more, fainter stars visible with averted vision. Located near NGC1807.

EASY
8" f/6, 37x, Bortle 5
Three medium bright stars arranged in an arc and some fainter stars visible with averted vision. Somewhat more evident than its neighbour NGC1807.
EASY