Friends. In aquiring a 5" refractor, two barlows(minus the optics) are used to extend the focus far enough back that the eyepieces will focus. This arrangement is too wobbly. Can you help with a dealer who sells a solid extension tube, if that is even what it is called? Thanks.
Extension tube needed
Started by khking, 04/10/2003 08:02AM
Posted 04/10/2003 08:02AM
Opening Post
Posted 04/10/2003 08:20AM
#1
Not sure how long you need it to be, but Moonlight has a 1.5" extension tube at http://www.focuser.com/cgi-bin/dstore.cgi?category=Focuser+Accessories
Anacortes has a TeleVue 2" extension tube with brass compression ring at http://www.buytelescopes.com/product.asp?t=&pid=4305&m=3
and 3" ones at http://www.buytelescopes.com/product.asp?t=&pid=1139&m=3
and http://www.buytelescopes.com/product.asp?t=&pid=4306&m=3
Hope this helps!
Doug
Midway, FL
Anacortes has a TeleVue 2" extension tube with brass compression ring at http://www.buytelescopes.com/product.asp?t=&pid=4305&m=3
and 3" ones at http://www.buytelescopes.com/product.asp?t=&pid=1139&m=3
and http://www.buytelescopes.com/product.asp?t=&pid=4306&m=3
Hope this helps!
Doug
Midway, FL
Posted 04/10/2003 08:36PM
#4
Thanks for all the help & sites. I checked Orion first thing but maybe I missed the tubes. I don't know the manufacture of this all black 5" refractor. It uses the 2 barlow tubes + a diagonal. Did I mention this lens is perfect when tested under collimation. With the extension tube + one of the violet filters ,this will be a nice scope.
Thanks again all.
Thanks again all.
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