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
22" f/4 Sayre Monocular Tom Osypowski Equatorial Platform (since 1995) Assorted small telescopes, 76-152mm; 25mm ES100°, 20mm ES100°, 13mm Ethos, 9mm ES120° (serial #18), 9mm ES100°, 8mm Delos, 6mm Ethos, 4.7mm Ethos, 3.7mm Ethos SX, 2.5mm Nagler Type 6, 2" 2X Powermate, 2" 1.5X Proxima Barlow, 2" GSO Coma Corrector, 18mm BCO, 10mm BCO, 6mm BCO and other 1.25" eyepieces. Zhumell 8x42 Nova Phase-coated ED Binoculars Burgess 25x100 Binoculars
"You're not afraid of the dark, are you?" - Riddick "The best scientists are humble. They seek to understand, not to ensure their legacy, but merely to understand." - Mori
Quote:I measured TFOV and calculated field stop of ES25-100 along with Nagler 31T5.41.1mm ES25-100 (last 1% vignetting/fuzzy field stop)42.2mm Nagler 31T5 (clean to the very edge)Tammy
"Great men are forged in fire. It is the privilege of lesser men to light the flame." --John Hurt, as The War Doctor12" f/4.9 Skywatcher Collapsible Dobsonian8" f/4.9 Orion Newtonian on alt-az mountOberwerk 15x70 BinocularsMinimalist Eyepiece Collection: 30mm ES-82, 22mm Vixen LVW, 14mm Delos, 10mm Delos, 7mm Pentax XW, 2X GSO 2" ED Barlow, 3X Explore Scientific Focal Extender, 4X Powermate
Astronomy educator/Sidewalk astronomer
Owner of Astronomy Delight franchise
18 inch f4.42 Dob on eq platform w ST120 f/5 finder
12 inch Zhumell Dob
8 inch f/6.9 home made Dob with Seevers optics
William Optics red 10th Anniversary 80mm FD
C8 XLT on Vixen GPDX
26lb eyepiece box
Cernan Space Center astronomer
Member of Northwest Suburban Astronomers
Vixen ED114ss Custom Nikon ED50
Quote:Is the rubber eye guard permanently attached or can it be taken off either by unscrewing it or just pulling it off?
Quote:So from the reports I've read so far this EP would not be suitable for daytime use. How would it compare to the Ethos 17 when it comes to pincushion distortion or the Nagler 31?
Quote: I found the Ethos 17 fine to use as a daytime EP.
Quote:My current daytime EP is the 88deg 30mm Leitz and I love it. I do see distortion(fishbowl effect) but it doesn't bother me. After months of side by side comparisons I actually choose the Leitz over the Pentax XW40 for my daytime viewing to give you idea of my tolerance to pincushion distortion. That being said would the ES25 100 still be considered a bad choice to use as a daytime EP for a guy like me that isn't too sensitive to the distorted fishbowl effect?
Quote:Hi Jack,You're welcome. Field stop size of ES25-100 was one of interest as well.I uploaded closeup ES25-100 photo of side-by-side with Nagler 31T5.Regarding visual experience, I have nothing to add beyond Don described earlier. I agree with him in all accounts.ES25-100 needs about 2.8mm Inward focus distance lesser than N31T5 but if your diagonal 2" holder hits bottom, you loose the advantage. It happened with Baader 2" diagonal. Astro Physics MaxBright was OK. I mean nosepiece went in all the way. Field lens side, trying to show blue fuzzy field stop that people are talking about: Eye lens side: Upper body shot: Tammy
Quote:Welp, I canceled the pre-order I had at one vendor and bought the ES100/25 from eyepiecesetc.com (thanks Don)! I just couldn't wait any longer!
15" f/5 Tectron
Mallincam Junior Pro
TMB 40mm Paragon,Leica ASPH zoom,
WO binoviewer w/assorted pairs
"Yeah, well, you know,that's just, like, your opinion, man."
Quote: It's not the bargain of the other 100s from ES, but it isn't dramatically over-priced, either.
Quote: Quote: It's not the bargain of the other 100s from ES, but it isn't dramatically over-priced, either. Soon, it'll not be $599, but $549. After a while, it'll be $499. Then christmas 2013 comes, and it gets on sale for $399!
17.5" Dob "Beta Version"
NP 127 on a CG-5 and CGEM DX
25x100 and assorted other binos
Naglers, Ethos and various others.
Quote: Quote: It's not the bargain of the other 100s from ES, but it isn't dramatically over-priced, either. Soon, it'll not be $599, but $549. After a while, it'll be $499. Then christmas 2013 comes, and it gets on sale for $399! Clear skies!Thomas, Denmark
Indiana for a three more weeks...
14.5" Teeter w/ Richard Fagin mirror, TT #66
EON 120ED on CG-5 ASGT
Lunt LS60THa/B1200 Sky Guy Porta II
Denk Super System with A45 OCS
Quote:Yet another picture of our favorite ES100! Mine came today from EyepiecesEtc Thanks again Don!!
NP-101 on a DM-6
Teeter 11" STS/Waite Mirror
Zeiss, Fujinon, Nikon, Vixen binoculars