From: "Arthur" 
To: , 
Reply-To: "Arthur" 



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Thanks Bob,=0D
=0D
What are the benefits of baffling? especially with an objective this smal= l,
it's only 4.125 inches. If I decide to enclude baffles in 'scopes design,
how do I figure the proper spacing of each baffle? Can you send me the
article you mentioned about converting A/C to DC drive.=0D
=0D
Many thanks,=0D
=0D
Bill Morgan=0D
=0D
-------Original Message-------=0D
=0D
From: Bob May=0D
Date: Sunday, July 27, 2003 02:38:59 PM=0D
To: atmlist=0D
Subject: Re: ATM Recent purchase questions=0D
=0D
The 5" tube will work but I think that a 6" tube will be easier to baffle=
=0D
nicely - you are going to put baffles in it, aren't you?=0D The work is all
going to be custom lathe work so either get your lathe=0D working of find
somebody that does have one. Getting a one-off item will = be=0D
expensive if you go to a commercial shop. For the focuser, I suggest that=
=0D
you do a large tube of maybe 3" ID and of the Crayford design with plenty=
 of=0D
travel in so that you can put a nice complex set of optical stuff on the=0D
scope. A set of stepdown rings will allow the various sized eyepieces and=
=0D
cameras to be used without problems, especially of vignetting.=0D The mount
sounds like an old equatorial head mount and it was intended to=
 be=0D
mounted to something for a base, a concrete pier to a wood tripod with a=0D
matching interface will work fine. The OTA was intended to be strapped on=
=0D
the V mounting interface and the whole assy. balanced at that time.=0D For
a drive corrector, I've got an article on converting one of the 12V=0D
power inverters to use as a drive corrector. The article has already been=
=0D
revised a little from one individual trying to get his convertor working = and=0D
those problems answered in the article.=0D Bob May=0D
http://nav.to/bobmay=0D
bobmay{at}nethere.com=0D
NEW! http://bobmay.astronomy.net=0D
=0D
=0D
=0D
=2E
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      Thanks Bob,
       
      What are the benefits of baffling? especially with an objectiv=
e this=20
      small, it's only 4.125 inches. If I decide to enclude baffles in 's=
copes=20
      design, how do I figure the proper spacing of each baffle? Can you =
send me=20
      the article you mentioned about converting A/C to DC drive.
       
      Many thanks,
       
      Bill Morgan
       
      -------Original
Message-------<=
/I>
       
      
      
Bob">mailto:bobmay{at}nethere.com">Bob May
      
atmlist">mailto:atm{at}shore.net">atmlist
      
http://nav.to/bobmay=">http://nav.to/bobmayhttp://nav.to/bobmay">http://nav.to/bobmay=
>
      bobmay{at}nethere.commailto:bobmay{at}nethere.com">bobmay{at}nethere.com
DIV>
      NEW! http://bobmay.astronomy.net=">http://bobmay.astronomy.nethttp://bobmay.astronomy.net">http://bobmay.astronomy.net=
>
       
       
       
      .





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