Jump to content


Secondary adjustable mirror 4 vane mount Sold!

Price - $45.00

Ad Number: 128447

Posted: 08 Feb 2018

Please sign in to message advertiser

Here is a 4 vane and adjustable secondary spider mount that was used on a 16 " Dobsonian Telescope. The dimensions are,
1. Will support up to a 3.5 " Diagonal ( I was using a 3.1 with it ) that dimension is the width of the diagonal mirror of course
2. The inside Diameter that you would need for this to fit should be close to 16 3/4". this will depend on your tube or secondary cage if its a truss tube Dobby
3. Vane length not measuring the attachment bolts is 7 1/4" in length
4. the attachment bolts have 3/4" of thread
5. The Diagonal mirror support was designed with a 2 piece assembly that you can take apart and inside of these parts is the main support bolt for the swivel action that allows the 3 adjustment screws to work again'st
an plate that pushes again'st the 45 degree mirror holder. I will send more pictures of how that works if someone requests it.

The secondary was constructed from 6061 Grade Aluminum and it does need a bit of a retouch with some good spray paint.
the price is $45.00 plus shipping


  • Condition used
  • Location Cottage Grove, OR 97424

Advertiser Info

Powered by Classifieds

Cloudy Nights LLC
Cloudy Nights Sponsor: Astronomics