NGC/IC Project Restoration Effort
(This is a very very beta version)
NGC1817
![](Images/negative_NGC1817-ngcicproject.jpg)
Basic Information
Location and Magnitude
Right Ascension: 5:12:27.0
Declination: +16:41:0
Constellation: TAU
Visual Magnitude: 7.7
Historic Information
Discoverer: Herschel W.
Year of discovery: 1784
Discovery aperture: 18.7
Observational
Summary description: Cl, L, Ri, lC, st 11…14
Sub-type: III1m
Steve's Notes
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NGC 1817
17.5" (2/11/96): large, roundish group of ~100 stars in a 15' diameter. The three brightest mag 8/9 stars lie on the west side. This trio is part of a 7' arc of 15 stars elongated N-S sharply defining the preceding side of the group. The cluster is fairly well detached except at the east side which merges into the general field density. About 5' NW of the trio described above is an unequal double h3269 = 8.6/10.6 at 20", though it appears detached from the main group. 25' SW is the bright, striking group NGC 1807 which has a cruciform outline.
8": about 65 stars in 15'-20' diameter, large, fairly rich, many faint stars. Includes three brighter stars on the west side including a mag 8.5 star. Forms a poor version of the "Double cluster" with NGC 1807 25' SW.