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ES34mm 68 Degree top cap fit?

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46 replies to this topic

#1 tag1260

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Posted 13 January 2018 - 03:04 AM

Anyone have a picture of their ES34mm 68 with the top cap?  Does it fit over the rubber with it folded down or just fit on top with the rubber up?   Thanks



#2 DHEB

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Posted 13 January 2018 - 03:18 AM

I do not have that particular ep, but I own three other ES ep's. All three use the cap over the folded rubber eye guard.

Picture here:

https://epistulaeast...ific-82-degree/
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#3 Astrojensen

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Posted 13 January 2018 - 03:28 AM

You can also turn the cap around and fit it INSIDE the rubber eyeguard. I can do that with my 40mm ES68, at least. It sits much more securely than the normal way, but you have to be a little careful when removing the cap, because it sits so securely, that if you just pull it off, it'll also pull the rubber eyeguard off! That has happened to me a couple of times. It's easy enough to reattach, but it's a little annoying in the dark.

 

 

Clear skies!

Thomas, Denmark



#4 bikerdib

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Posted 13 January 2018 - 09:26 AM

It fits with the eyecup folded down, and that is the way mine arrived from ES.  When removing the cap from any of my eyepieces, I usually give a slight twist as I pull the cap off, that seems to relieve some of the friction/tightness and they come off pretty easy.


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#5 csrlice12

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Posted 13 January 2018 - 12:25 PM

Mine doesn't fit with the eyecup down...and it doesn't fit well with the cup up either.



#6 tag1260

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Posted 13 January 2018 - 02:15 PM

Thanks everyone. Mine must fit like csrlice12's.  Doesn't fit right with the eyecup up and won't fit at all with it down. It will fit inside the eyecup but I'm skeptical of the logo thingy touching the glass that way. This is the only one that I have from ES, and I have almost complete sets of the 82 and 68 series, that fits this way. I guess I'll give ES a call later this week about it.



#7 havasman

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Posted 13 January 2018 - 03:03 PM

I have at last come to the conclusion that eyepiece eye lens caps are not going to fit and if they do it is probably just a temporary happy accident. I've tired of my 10mm Delos cap just popping off when sitting untouched and upright in a rack, having the cap sit loosely on the ES82 6.7 when it stays on at all and having the 6mm Delos' and WO 4mm UWAN caps so oversized that they have no friction retention.

 

Objective lens caps are better, but not 100%.

 

The kicker was reading another's post the other day where the complaint was that TV caps were too tight!?!

 

So while it may seem to us laymen that optics design might be difficult whereas designing an effective cap should be really easy, I conclude that is not at all the case.



#8 Starman1

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Posted 13 January 2018 - 05:03 PM

Experiment: https://agenaastro.c...e-end-caps.html



#9 beatlejuice

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Posted 13 January 2018 - 06:25 PM

I finally figured out that I get a good fit with the cap inside the folded up rubber eye cup without reversing the eye cup.

 

Eric


Edited by beatlejuice, 13 January 2018 - 06:26 PM.


#10 Maurolico

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Posted 13 January 2018 - 09:33 PM

It fit on top with the rubber up. One question: which side are facing the rubber's "threads"? Are these inside or outside? The rubber can be revolted: the "threads" facing outside makes the cap gripper while the rubber is still up.


Edited by Maurolico, 13 January 2018 - 09:35 PM.


#11 beatlejuice

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Posted 13 January 2018 - 10:24 PM

Threads on the inside for me.

 

Eric



#12 csrlice12

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Posted 14 January 2018 - 12:34 AM

The only thing I can say is the cap for the ES68 34mm is one of the poorest designs on the market...its a better frisbee then an eyepiece cap...the rubber design is pretty poor too....they'd been better off just using nothing then what they came up with....that being said, the eyepiece's performance is actually pretty good.


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#13 airbleeder

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Posted 14 January 2018 - 01:12 AM

   Mine fits.



#14 starbase25

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Posted 14 January 2018 - 02:53 AM

Most useless cap ES made for the 34mm.



#15 Ernest_SPB

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Posted 14 January 2018 - 03:07 AM

http://astro-talks.r...32&t=785#p32170



#16 csrlice12

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Posted 15 January 2018 - 10:01 PM

Is there a box to click to translate into English?  Looks like a very interesting thread on the ES line of eyepieces.



#17 starbase25

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Posted 15 January 2018 - 10:14 PM

Is there a box to click to translate into English?  Looks like a very interesting thread on the ES line of eyepieces.

Just use Google Web Page translate.

 

http://itools.com/to...page-translator

 

https://translate.go...32&t=785#p32170


Edited by starbase25, 15 January 2018 - 10:15 PM.

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#18 tag1260

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Posted 15 January 2018 - 10:45 PM

Well, ES sent me a new cap and guess what? It fits the same as the first one. Gonna have to call them tomorrow or Wednesday.



#19 Starman1

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Posted 16 January 2018 - 01:28 AM

Is there a box to click to translate into English?  Looks like a very interesting thread on the ES line of eyepieces.

Chrome has automatically, but most other browsers also have an option for, an add-on that will automatically translate a web page for you.

I use 7 different browsers and only 2 of them don't have a translation add-on.

When I open a webpage in Japanese or Russian or any other language, a few seconds later the page is in English.

 

Or, cut and paste into Google Translate.



#20 howardcano

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Posted 16 January 2018 - 08:05 AM

I used a top from a mayonnaise jar for mine.  It looks silly, but works much better than the original cap.



#21 makeitso

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Posted 16 January 2018 - 03:17 PM

The cap on my 68° 24 fits nice and snug. The caps on my 82° 11 and 4.7 fall off. Not good.

 

Jack



#22 starbase25

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Posted 16 January 2018 - 09:35 PM

Well, ES sent me a new cap and guess what? It fits the same as the first one. Gonna have to call them tomorrow or Wednesday.

Are you kidding?  Wow!  Unbelievable !!! :lol:

 

applause.gif



#23 tag1260

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Posted 16 January 2018 - 10:11 PM

Sent them pictures of the cap, eyepiece and a ruler and they agreed that it wasn't right. Supposedly sent me the right one this time. We'll see.........
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#24 NOLAMusEd

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Posted 17 January 2018 - 01:27 PM

In ES's defense, at least they are attempting to make it right. Most would have assumed that what you get is what you get and found an aftermarket cap elsewhere.

 

There really needs to be some industry-spanning standardization of eyepiece dimensions, mostly in the filter thread category between EP and filter manufacturers, but also on dustcaps.


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#25 aatt

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Posted 17 January 2018 - 10:17 PM

I have found mine only fits with the eyecup up.I just kind of gingerly screw it on and put it in the case.No complaints about the ep other than that!




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