"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
My binos: 6x30, 7x35, 10x70, 15x60, 20x80 My scopes: 12.5" Telekit, 8" SCT, 4"f5 TV, 3"f11 Vixen ARCO OBSERVATORY 7200'
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
C10NGT, Z8, 150 Rumak, XLT 150, C6, C5, SW5 Newt, 4.5 Ball, C102GT, C90, ST80, A70LF; 15x70, 25x100; Burgess BV; Paracorr II; T6 2.5, XO 2.58/5.1, Ethos-SX 3.7, Delos 4.5, TV Plossl 7.4-26, BCO 10, Hutech HC 12.5, Sterling 12.5-25, ES100 14, CZJ H 16/25, CZJ O 16, M5k UWA 24, T5 31, Ultrascopic 35, Titan-II 40; Bino Pairs M5k UWA 6.7, Baader Zoom 8-24, M5k SWA 24, TV Plossl 26, RKE 28.7; Zooms NZ 2-4, NZ 3-6, Leica ASPH 8.9-17.8, Baader 8-24; Baader Zoom Barlow, VIP Barlow
Quote:I DO have one EP that was easily removed from the holder thingy.Never put it back after one look. It has a new job in the workshop....
Quote:I don't know, but... Clear skies!Thomas, Denmark
Jeff Morgan - Wile E. Coyote School of Telescope Making
Skywatcher BD 180mm f/15 Mak Intes M703 180mm f/10 Mak ED102 f/7 refractor Vixen LVW42, 22,13,8,5 and Vixen LV50
Clear, Steady Skies, Ed Kessler sic itur ad astra Living on Earth is expensive, but it does include a free trip around the sun. 16" Jeff Counsil Dob, Stellarvue SVA145mm, TV-85, Coronado SM60 Eyepieces: Vernonscope Binoviewer and Brandons, Pentax, Leica ASPH Zoom, Denkmeier Mount: Nova Hitch (On the way)
Quote: Who invented the barrel safety undercut?
"I have been paddling in the shallows of a great ocean of knowledge." - Sir Isaac Newton * * 15" F4.55 Starsplitter Dob & a Denk II binoviewer * * http://peaceofsky.wordpress.com/ Pacheco State Park Fremont Peak
Quote:When I am struggling to pull my $800. Ethos out of my $500. Paracorr I frequently think " Really? Is it necessary that I put up with this? This is the best you can do?"
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
My eyepieces are made from the waste product of exploding stars.
10XTi 102XLT ST80A(2" Focuser); President, Eypieces Anonymous, Denver Chapter (Hello, I'm an eyepiece junky, what's your excuse?)
DAS Dark Site
Quote: the TMB Planetary's and the William Optics 2inch-1.25 inch do not always mate and it takes a bit of rock to get them free but in general they work just fine...
Quote:Wondering if anyone knows the origin of this ignoramus feature & why the vast majority of eyepieces available today come with it.
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:Personally I like eyepieces with undercuts...There are a few combinations that can result in an eyepiece getting hung up, the TMB Planetary's and the William Optics 2inch-1.25 inch do not always mate and it takes a bit of rock to get them free but in general they work just fine... Never have a problem with the TeleVue adapters or focusers/Paracorrs. I do appreciate them with viewing with my 12.5 inch F/6 equatorial because sometimes the focuser is pointing down and the undercut adds a bit security, an eyepiece falling 5 or 6 feet and hitting concrete is worth avoiding. Jon
Quote:Mike Hosea in 2004 seems to be the first post in the CN Archives that uses the word "undercut". Of course he didn't like it Thread.
I like to move quickly changing out eyepieces. I am careful beyond belief, careful to the point of obsession. I find that the undercuts actually increase (for me) the possibility of dropping an eyepiece. I have the eyepiece in tow, am going to swap it out--and it hangs up getting past the focusser. I then have to play with it to get it home free. All that increases the chance that I will drop it. If the eyepiece just slid out easily, it, for me, would be quicker and safer.
PS--I am talking about TeleVue Naglers, Delos, and Radian eyepieces here.
Quote: 3) Watch how Roger Moore removes the explosive detonator from the nuclear warhead of a Poseidon missile. That's the proper technique.
Quote: But my morality made me confess.
"The heavens declare the glory of God; the skies proclaim the work of his hands." Psalms 19:1