Date: Sat Oct 23 2004 - 07:33:25 MST
www.thorlabs.com
Many of the precision mechanical parts used in the secondary holder/collimation assy etc for my 18" Cass came from Thor Labs
Of particular interest are the ultra fine threaded screws used for fine adjusting collimation and mirror separation
examples:
http://www.thorlabs.com/ProductDetail.cfm?&DID=6&ObjectGroup_ID=163&Product_ID=707
Fine Adjustment Screw, 1/4"-80, 2" Long (that's 80 threads per inch folks!)
--- http://www.thorlabs.com/ProductDetail.cfm?DID=6&ObjectGroup_ID=994&Product_ID=1191 Adjuster Nut, Locking Style Sleeve, 1/4"-80, 0.52" Long (the corresponding nut assy for the screw above) ---- http://www.thorlabs.com/NewGroupPage.cfm?Guide=8&Category_ID=32&ObjectGroup_ID=250 Adjustable Spanner Wrench, 1/4" to 3" 1/2" Wrench, Ideal for 1/2" Lens Tubes 1" Wrench, Ideal for 1" Lens Tubes Fully adjustable spanner wrench sets. The range of this spanner wrench is from 1/4" up to 3" diameter. Ideal for inserting retaining rings in our Ø1" and Ø2" lens tubes.
