No materialistic vanity list to sport.
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
Cactus Patch Observatory / 14" LX200
"The four points of the compass be logic, knowledge, wisdom, and the unknown. Some do bow in that final direction. Others advance upon it. To bow before the one is to lose sight of the three."
Quote:I believe the problem is pretty common; I'd think ES would change the caps once word gets out about it.
Binos: APM100 | Obie 20x80D3 | Resolux 15x70, 7x50 | Nikon AE 12x50, 7x35 | FMT-SX 10x50 | Canon 10x30 | Vanguard ED 8x42
Mounts: AVX | Orion Paragon | Tecnosky eLLe
Telescopes: XT8g | AT6RC | Onyx 80EDF | 102GT | ST80
1.25" EPs: Hyperion 8, 17mm | ES68º: 20, 24mm | ES82º: 4.7, 6.7, 8.8, 11, 14mm
2" EPs: Meade 5k 82º: 24, 30mm | ES100º: 5.5, 9, 14, 20mm
10" F/4.7 Modified Skywatcher Reflector, 38mm Orion Q70, 17mm Modified Ultima LX, 10mm TeleVue Delos, 7mm Pentax XL.
Blog: Astronomy & Living by Hernando
Celestron CPC1100 XLT w/ Stellarvue 10x60 finder ES 100° 5.5mm, 9mm, 14mm, 20mm, 25mm ES 82° 30mm ES 68° 40mm UO Abbe Ortho 4mm, 5mm, 6mm, 7mm, 9mm, 12.5mm, 18mm, 25mm Docter Nobilem 10x50 Binoculars
Vixen 140mm Neo-achro, 2" AP Maxbright diagonal, 40mm Orion Optilux, 35mm, 30mm, 18mm, and 15mm Ultrascopic/Ultima, 28mm & 20mm ES 68, 19mm TV Panoptic, 5.5mm Meade UWA, 2.4x 2" Dakin barlow (prototype barrel),1.6x Antares barlow.
Quote:I put a vernonscope 2" cap on the bottom of my 14mm ES100 and had no problems with it falling off or with smudges after that.Dave
Quote:My ES82 30mm got badly smudged by the bottom cap one time and I was so disappointed with it's views, it really affects the view, big time. I was comparing it to my ES100 20mm on M31, the contrast was so bad in comparison that I almost considered selling it until I noticed the nasty smear on the field lens!
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
Quote: I solved the problem with a Kim Wipe stuffed into the cap
Quote:Quote: I solved the problem with a Kim Wipe stuffed into the cap Forgive me... but that's not a solution! Sounds like a way to cause more problems! The bottom cap should protect the field lens! Bottom line! Be careful, the lens is very close to the bottom of the ES20 barrel!
Quote:Quote:Quote: I solved the problem with a Kim Wipe stuffed into the cap Forgive me... but that's not a solution! Sounds like a way to cause more problems! The bottom cap should protect the field lens! Bottom line! Be careful, the lens is very close to the bottom of the ES20 barrel!It may not be a solution, but it's less likely to cause more problems than a replacement non-smudging bottom plastic cap that is in still in contact with the field lens. After all, KimWipes are widely used by professionals to clean the finest and costliest optics.
Quote:I have the same smudging problem with my 20mm 100* ES eyepiece. I cleaned it off, and under normal house lighting, it looked sparkling clean.However, when I was observing at my dark sky location, I was able to see a faint smudge on the field lens under the subdued light of my red flashlight. It appears that the lens cap may have left a permanent, but ghostly stain.I doubt it affects the views though.
Quote:The field lenses arent' right *at* the bottom, it's just that the rubber cup flexes that much! A rigid cap would definitely fix the problem...
Quote: I checked to see if the soft cap on the bottom of the eyepiece was in contact with the field lens. Sure enough it had been, and had left a fairly good-sized smudge.
Happy owner of-- A Mag 1, 12.5 inch Porta Ball A Dual Axis Equatorial Platform A PST Double Stack
Quote:Quote: I checked to see if the soft cap on the bottom of the eyepiece was in contact with the field lens. Sure enough it had been, and had left a fairly good-sized smudge. I hope this was just an anomaly. Anyone else have this problem?