NGC 225
DSS image of NGC 225
Overlaid DSS image of NGC 225, 30' x 30' with north at top and west to the right

Aladin viewer for the region around NGC 225
H VIII 78, h 52, GC 120, Collinder 7, Cr 7, C 0040+615, Lund 25, OCl 305

Type  Open Cluster
Magnitude  7
Size  15'
Right Ascension  0h 43' 36"  (2000)
Declination  61° 46' 0" N
Constellation  Cassiopeia
Description  Cl, L, lC, st 9...10
Classification  III1pn
Observing Notes

Andrew Cooper
Nov 2, 2019    Kaʻohe, Mauna Kea, HI (map)
28cm f/10 SCT, NexStar 11" GyPSy @ 127x
Seeing: 7 Transparency: 6 Moon: 39%

Large, poor, coarse, fully resolved, a dozen 10-11 magnitude stars in a 15' area

Andrew Cooper
Dec 27, 2002    Sentinel, AZ (map)
46cm f/4.5 Deep Violet

Large, bright, sparse, about 20 members of the same magnitude evenly spread in a circular area, rich galactic star field

Rev. T.W. Webb
May 19, 1885    Hardwick, Herefordshire, England (map)

Fine cluster, somewhat like the letter W; half way from γ to κ.
― Celestial Objects for Common Telescopes, T. W. Webb, 1917

Captain William Henry Smyth
Nov 17, 1833    No. 6 The Crescent, Bedford, England (map)
150mm f/17.6 refractor by Tully 1827

A small double star, in a loose cluster of about thirty of the 9th and 10th magnitudes, occupying all the field; but there being no star- dust, or nebulosity intermixed, the firmament appears unusually dark between them. The most conspicuous object is the double star here carefully estimated, of which A is of the 8½ magnitude, and B of the llth, both pale. It is No. 1046 of H.'s Fourth Series. This cluster, which is on the seat of Cassiopea, and exactly half-way between γ and κ, was discovered by Miss Herschel in 1784; and described by William Herschel. as "taking up 15 or 20 minutes."
― A Cycle of Celestial Objects Vol II, The Bedford Catalogue, William Henry Smyth, 1844

Harold Corwin

This cluster has a loose concentration in its southeast side that is usually taken as the center of the cluster. I've kept the position (from Brian Skiff) that clearly refers to this concentration, but looking at the field, I put the center a few arcminutes to the northeast. This is a little closer to the positions that WH and John Herschel have left us. I also note that a star on the northwestern side has a patch of nebulosity associated with it.
NGC Notes by Harold Corwin
Other Data Sources for NGC 225
Nearby objects for NGC 225

Drawings, descriptions, and CCD photos are copyright Andrew Cooper unless otherwise noted, no usage without permission.

A complete list of credits and sources can be found on the about page

NGC 225