AD10, NoName8, DS-16 with Spooner primary.
ES, Sterling, Parks, Baader, TV, GSO EP's and a lone Nagler.
Nikon, Celestron binos
The opinions expressed herein are solely mine as an amateur astronomer hobbyist & consumer. Information herein was correlated from experience, discussions with others, & research from multiple sources freely available at time of posting. All reasonable care & skill was used, but no warranty is made as to accuracy, & liability cannot be accepted for errors/omissions. This is for information only and not intended nor implied to be a substitute for professional advice.
Quote:The other major problem is dust. You may think you don't have any, and you may be very careful, but somehow, this stuff always gets into the airgaps in an eyepiece or Barlow. Always.
Quote:Thanks Bill, I'll look into one of those pickup tools. Having ruined one eyepiece last spring while attempting to "fix" it, I'm aware of the risks...Quote:The other major problem is dust. You may think you don't have any, and you may be very careful, but somehow, this stuff always gets into the airgaps in an eyepiece or Barlow. Always.Dust? In New Mexico? Surely you jest!
Quote:Don, Google advanced search is a wonderful thing!Yes, one has to wonder what (or if) they were thinking. The 140 I picked up is blackened inside, but it's a glossy black. It seems reasonably sharp but has color fringing issues on Jupiter.
Quote:Quote:It seems reasonably sharp but has color fringing issues on Jupiter. On axis? Bet the lenses aren't spaced right. Or was this a variation in QC on the production? Hard to say.
Quote:It seems reasonably sharp but has color fringing issues on Jupiter.
Quote:Quote:Quote:It seems reasonably sharp but has color fringing issues on Jupiter. On axis? Bet the lenses aren't spaced right. Or was this a variation in QC on the production? Hard to say. I'll doublecheck if it's clean on axis next viewing session. But I can say, it's the worst of any barlow I've tested.
Quote:The 140 I picked up is blackened inside, but it's a glossy black. It seems reasonably sharp but has color fringing issues on Jupiter.
8" f/5 Discovery - Celestron Advanced VX mount
23mm Celestron Axiom 11mm, 6.7mm, 4.7mm ES N2 zhumell ED 2x barlow (2")
Quote:In your pic the retaining ring appears to extend past the barrel. On my Meade 140 the retaining ring is just a hair under the barrel. Maybe you have an element that is not in correctly.
10" F/4.7 Modified Skywatcher Reflector, 38mm Orion Q70, 17mm Modified Ultima LX, 10mm TeleVue Delos, 7mm Pentax XL.
Quote:So THAT'S WHY the 38mm Orion Q-70 you shipped me was so bad in my scope Syed !!! Just kidding....Cheers,
SyedTeeter STS 11 f/4.3 Zambuto | XT8i | XT8g | XLT 150 | C90 | EON 80mmAT Voyager and Nexstar SLT mountsEyepieces: Mostly TeleVue and PentaxDenk II BV'er, Earthwin PFS-SE, Pentax 10x50 PCF WP II
Quote:I've never had or seen an eyepiece taken apart and put back together that did not get some dust between elements, Outside of a clean room, it is extremely difficult.
As always, YMMV or more likely, YMWV [ Your Mileage Will Vary! ] Clear Skies, Bill
Cliff Hipsher ICC USN (Ret.) '03 883 XLH Meade 2080/LXD75 (Big Blue) Meade DSI Color Meade DSI Pro TEC Cooled Celestron Neximage Celestron Radial Guider Star Guider Filter Wheel Vixen Flip Mirror Some Eyepieces Swift 7x50's Empty Wallet I.A.M.B.K. I ride. There fore I am...
Quote:Step 1: Don't do it.
Zhumell Z8 8" f/6 Dob Meade DS-2090 90mm f/9 on EQ1 mount (modified) Olympus Trooper 10x50 DPS I bino Quantaray Dakota 9x40 bino
Quote:Quote:Step 1: Don't do it.Why? What's the problem?" Everything around you...was made up by people that were no smarter than you..." Steve Jobs
My eyepieces are made from the waste product of exploding stars. 10XTi 102XLT ST80A(2" Focuser) XW: All; XO: 2.58 Televue: Naglers-T1 Smoothside-full set, 17T4,12T4,Ethos 17,4.7; plossels-40,32,20,17,&7.4mm; Pans-22,24mm; Delos-6,8,12,17.3mm ES100: 5.5,9*,14,20 ES82: full set ES68: 16,20,24,34 NLV: 5,9,10,15 Ortho: HD-7,9; OPS-9,12 Meade RG 7mm Other: Pentax 12.5K(.965), 10mm Parks Zoom: Nag3-6 *=on b/o DAS Dark Site
Quote:There are several brands of these vacuum tweezers. Here's on - link.These inexpensive vacuums are life savers...especially for small eyepieces like the 7mm Pentax SMC Ortho I just took apart for cleaning. It was a snap with this tool.