Tom (Pegster)DSH-8 (GSO Dob) - 15x70 Oberwerks
ED80/SVP - WO 66P
Sears Discoverer EQ 60/900 - 8x42 Regals
History is Philosophy teaching by examples. Thucydides
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.
Quote:14mm Meade Series 4000 UWA, setting #1 when used in 2" mode.
Quote:Second plea: I'm now willing to accept much less than before. Will anyone simply measure the total travel span distance (overall height increase from lowest to highest setting) for their modern style (high profile adapter model, the one with no recess slot for the adapters set-screw) Visual Paracorrs tunable top? This is a non-destructive measurement.
Quote:Don, Thank you again!
Just to clarify. Are you saying that both the 14mm UWA and 8.8mm UWA when used in 2" mode would safely fit into the Paracorr while at its lowest tunable top setting and without a filter screwed on, but at least one of them (if not both) would most certainly hit the lens of the Paracorr with a filter screwed on?
If this is correct, then can someone who has these eyepieces tell me what their length is from the focuser shoulder to the end of the 1.25" barrel section? Perhaps just standing them up on a table top and carefully measuring from the table top to the focuser shoulder would be the easiest means to accomplish this.
Quote:One "relatively" safe means to measure the insertion depth of a late model Visual Paracorr while at its lowest height setting on the tunable top would be to simply place a cotton 'Q'-tip down the side until it rests by gravity on the lens element, and then mark it at the shoulder junction. Then remove it, and stand it up (without any downward force applied), and measure from the table top to the mark on the 'Q'-tip.CAUTION / WARNING: Again, I warn that I would not wish or intend that anyone scratch a Paracorr in attempting to measure it.
Eager to get the Cave 6" f/4 out with some 'high' (medium in this scope) power eyepieces!
The Spreadsheet I posted does show the optimum setting even if its negative or larger than 5.
Quote:Lawrence,I have a question about your spreadsheet:On the TeleVue site, TeleVue shows the setting for the 1-1/4" Type 6 Naglers as setting 4. It also shows that the field stop for each of these eyepieces is 0.25" below (toward the field lens end) the eyepiece "shoulder" (where the inserted eyepiece sits).Do I enter this as a positve (as TV shows on their site) in your calculator, or as a negative?