[sac-forum] Re: SAC H400 List

Not quite so sinister. Of the Herschels, only the 400 on the "H400" you already 
observed are excluded. See directions on SAC website for 'listing of the lists' 
you exclude from your '1000 Other Objects'.

Jack

----- Original Message ----- 
From: David Hofland 
To: sac-forum@xxxxxxxxxxxxx 
Sent: Wednesday, January 09, 2008 7:24 AM
Subject: [sac-forum] Re: SAC H400 List


Interesting.  If that's true I was done a long time ago!  I have logged over 
100 additional Herschel objects beyond the 380 list objects I currently have in 
my H-400 "list" log as I am also working on the "1000 Objects Not Included On 
Any Other List" uh .. list :-)   I feel bad for the folks that struggled for 
years to get the last few "list" objects when they most certainly observed many 
additional "non-list" Herschel objects over the course of observing the "list" 
objects.  

But then this leads to another more sinister situation . . .  If the Herschel 
400 "list" is really any 400 objects from the 2514 "Herschel" objects, then is 
the full 2514 "Herschel" objects list a "list" whereby now my quest for the 
"1000 Objects Not Included on Any Other List" list has to be objects exclusive 
of the entire 2514 "Herschel List" list????


David Hofland

Alabama 

----- Original Message ----- 
From: "gene lucas" <geneluca@xxxxxxxxxxxxx>
To: "SAC-Forum" <sac-forum@xxxxxxxxxxxxx>
Sent: Wednesday, January 09, 2008 5:33 AM
Subject: [sac-forum] Re: SAC H400 List


> (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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