Scott in Arizona
Fred StarStructure LE Series 18" f/4.3 (Zambuto & Nexus/ServoCat/Skytools3 Pro) Celestron 8" SCT w/Starlight Feathertouch Microfocuser; Celestron 102mm f/9.8 refractor Stellarvue SV80ST f6 Triplet APO Tele Vue & EarthWin binoviewers Enough Eyepieces and Accessories to put my Scopes to Good Use Free-Turn Q HalfHitch, CG5-ASGT(2), Astro-Tech Voyager mounts
-DannyMy warehouseMy Channel
Quote:Where do you have a spring?
Quote:Quote:Where do you have a spring? What spring?
Jeff -----TEC 140, Stellarvue SVR90T, SV115T20 and AT65EDQ refractors,Webster D14, C11 EdgeHD Lunt LS60THa solar scope double stacked with LS60FHaTelevue Pan 41; Ethos 21, 17; Nagler 31T5, 9T6, 7T6, 5T6, 3.5T6; Delos 10, 12, ES25, 14, 9Astro-Physics 900GTO with Rob Miller Tri36M TripodDM-4 Mount-Extension-Tripod w/ Sky CommanderDM-6 Mount-Losmandy Adapter/Extension-Berlebach Planet w/ Argo Navis
Quote:Quote:Where do you have a spring?
The advantage of four screws is that you can move the secondary in 8 directions--the four screws, and the 2:2 directions halfway between.
I find it much easier to adjust than a 3 screw arrangement.
As for tension, I tighten the screw until it takes quite a bit of force to turn it, but not so tight I cannot turn it if I need to. Therefore, the screws are not loose, and to even unscrew one requires a bit of force. But if I have to tighten it another 1/16 turn, I can.
Quote:This Teeter is a high end scope. All the secondary elements, spring, etc seem in appropriate near new condition. The scope holds collimation well during use. I use a glatter laser then Catseye tools and the two-hole auto collimation.
Quote:I just had my first experience with 4 knobs on the secondary. It's a Webster D14. The mirror movement is much easier than the 3 knobs on our Obsession 20 f5. I had to read the instructions to know to loosen with one hand while tightening the opposite knob with the other hand.
Quote: My apologies, there is no spring.
AS of NSW
AS of Hunter Valley
Fact: I like reflectors and big ones. All the refractors I own are either finderscopes, binoculars, or riflescopes.
18"/F4.5 Obsession #1333 fully optioned (OMI Optics)
14"/F4.5 SDM #33 fully optioned (Zambuto Optics)
10"/F5.3 SDM #50 fully optioned (Suchting Optics)
Pentax XW's, T4 & T5 Naglers , UO HD orthos, 6mm Delos, 8mm Radian, 8.5mm Pentax XF, 13mm Ethos. 12mm Celestron Illum Astrometric eyepiece. Rainbow Optics Spectroscopic Eyepiece Set. Orion Optics UK 250 lpi Ronchi grating eyepiece. 2" Astronomiks UHC, OIII & H-Beta filters, 2" DGM Optics NPB filter. 2" Variable Polariser. 2" Hoya colour filters.
Leupold 10x42 & Pentax 16x60 binos.