[sac-forum] Re: SAC H400 List
- From: gene lucas <geneluca@xxxxxxxxxxxxx>
- To: SAC-Forum <sac-forum@xxxxxxxxxxxxx>
- Date: Wed, 09 Jan 2008 04:33:51 -0700
(Reposting this for second time, due to faulty computer date/year
yesterday, sorry... GL)
Fellow Deep Sky archivists:
Here's what I can contribute... several web references which may shed
some light, or maybe just more "noise"...
The AL H400 lists are given in several ways. Anyways, I couldn't find
my printed copy of the AL H400 list with the "brown" cover.
It might be worth noting that the author of the materials and list(s)
used for the AL Herschel 400 Certificate program, Brenda Branchett
indicated privately, when she and her husband visited SAC some years
ago, that the collection of "400" Herschel objects originally put
together by the Ancient City Astronomers club in St. Augustine, Florida
consisted of >>just those observations that their members had
collected<< with various small telescopes.... There WAS NO systematic
survey or attempt to include any particular group(s) of objects!
I note that, as another example of where this leads (for instance), that
although there are about 400 Herschel objects shown on the Norton's Star
Atlas charts (dating from the early 1900s), there are a number of
Herschel objects that are NOT in the AL400 list, and vice-versa....
There are a total of (at least) 2514 "Herschel Objects" (found by
William Herschel) to pick from !!
Have fun, Cheers,
Gene Lucas
(17250)
Much information on William Herschel and the list(s) of deep sky objects:
http://messier.obspm.fr/xtra/similar/herschel.html
Deep sky collections and lists similar to Messier's:
http://messier.obspm.fr/xtra/similar/similar.html
(Includes the SAC Messier Plus lists)
Same info, in a slightly more systematic listing:
http://messier.obspm.fr/xtra/similar/catalogs.html
Bill Arnett's version of the AL H400 list (includes NGC 1750, but NOT
7814):
http://obs.nineplanets.org/herschel/h400.txt
Astronomical League's pages on the H400:
http://www.astroleague.org/al/obsclubs/herschel/hers400.html
AL H400 ordered by NGC no. (NGC 1750 is NOT listed, but 7814 is listed):
http://www.astroleague.org/al/obsclubs/herschel/h400lstn.html
AJ Crayon, Jack Jones [and others] wrote:
[lots of interesting traffic snipped, in fear of the dreaded Net
N-N-N-Nanny.....GL]
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