NGC/IC Project Restoration Effort

(This is a very very beta version)

NGC1817

 

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

===== 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.