Ad Astra Observatory

Hi Diana,

I was just contemplating building out my 8” f/6 mirror into the Sonotube,
and remembered that I’d need some rings for it. So I went to Orion’s

site… they don’t quite have the right size, do they. So I poked around
some more, and found this URL:

http://www.handsonoptics.com/pts_antares.html

we’d either need the CR-10 or the CR-9.8 (depending on whether it’s really
10” or slightly under and how snug you want it).

Now I’m in search of a couple of spiders and secondary holders (they sell
these separately apparently) and I’m off to the races.

J
PS: Orion still sells the proper counterweights for your mount:
http://www.telescope.com/shopping/product/detailmain.jsp?itemID=6290&itemType=PRODUCT&iMainCat=6&iSubCat=31&iProductID=6290