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Equipment Discussions >> Eyepieces

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Starman1
Vendor (EyepiecesEtc.com)
*****

Reged: 06/24/03

Loc: Los Angeles
Re: ES 100 caps leaving smudges - impacting reviews? new [Re: azure1961p]
      #5947286 - 06/29/13 10:50 PM

Quote:

I don't ever use eyepiece caps ever. The ocular case when closed is dust proof and has desiccant to insure dryness. I'd never cap my oculars particularly where it could conceivably have air that's moist trapped under the cap even the the case is desiccant dry.

Pete



All well and good unless the foam in your case hits the bottom and top lenses on your eyepieces.


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Scanning4Comets
Markus
*****

Reged: 12/26/04

Loc: Ontario, Canada
Re: ES 100 caps leaving smudges - impacting reviews? new [Re: azure1961p]
      #5947305 - 06/29/13 11:09 PM

Quote:

I don't ever use eyepiece caps ever. The ocular case when closed is dust proof and has desiccant to insure dryness. I'd never cap my oculars particularly where it could conceivably have air that's moist trapped under the cap even the the case is desiccant dry.

Pete




I've been using eyepiece caps for years without any problems. I'd never put eyepieces in my case without putting caps on them ever. Dust is everywhere and can accumulate....especially on a cold eyepiece after an observing session and after it warms up.

Cheers,


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Jim7728
Postmaster
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Reged: 04/10/05

Loc: Stoop Landing Observatory, NYC
Re: ES 100 caps leaving smudges - impacting reviews? [Re: csrlice12]
      #5948031 - 06/30/13 01:06 PM Attachment (5 downloads)

Quote:

I've replaced most of mine with televue caps as the ES ones kept falling off.




Same here. I think any eyepiece with a negative element on the bottom should be stored horizontally.


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gnowellsct
Postmaster
*****

Reged: 06/24/09

Re: ES 100 caps leaving smudges - impacting reviews? new [Re: Jim7728]
      #5952373 - 07/03/13 12:49 AM

I haven't used eyepiece caps in 7 or 8 years. I used to put each eyepiece into its own bolt case. When I got tired of that--I would spend 20 minutes sorting out eyepieces and bolt cases--I made an eyepiece box and just stick the eyepieces in the box. When it's closed up they're not getting any dust.

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gnowellsct
Postmaster
*****

Reged: 06/24/09

Re: ES 100 caps leaving smudges - impacting reviews? new [Re: Starman1]
      #5952376 - 07/03/13 12:51 AM

Quote:

Quote:

I don't ever use eyepiece caps ever. The ocular case when closed is dust proof and has desiccant to insure dryness. I'd never cap my oculars particularly where it could conceivably have air that's moist trapped under the cap even the the case is desiccant dry.

Pete



All well and good unless the foam in your case hits the bottom and top lenses on your eyepieces.




No, no foam. It's a gunk collector. My eyepieces are free range like God wants 'em to be. No caps, no foam.


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DHurst
super member


Reged: 03/10/06

Re: ES 100 caps leaving smudges - impacting reviews? new [Re: Jim7728]
      #5953036 - 07/03/13 12:27 PM

Quote:

Quote:

I've replaced most of mine with televue caps as the ES ones kept falling off.




Same here. I think any eyepiece with a negative element on the bottom should be stored horizontally.




Got to love the TV sticker next to an ES ep!


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csrlice12
Postmaster
*****

Reged: 05/22/12

Loc: Denver, CO
Re: ES 100 caps leaving smudges - impacting reviews? new [Re: DHurst]
      #5953206 - 07/03/13 02:11 PM

TeleScientific?

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Kutno
Pooh-Bah
*****

Reged: 08/17/09

Re: ES 100 caps leaving smudges - impacting reviews? new [Re: DHurst]
      #5953723 - 07/03/13 08:03 PM

Quote:

Got to love the TV sticker next to an ES ep!




True confessions.


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Rick Woods
Postmaster
*****

Reged: 01/27/05

Loc: Inner Solar System
Re: ES 100 caps leaving smudges - impacting reviews? new [Re: Kutno]
      #5978143 - 07/18/13 03:26 PM

I emailed ES and asked about replacement lens caps for my 3 ES100's. They sent them right out; unfortunately, these new ones fall off same as the old ones.
I appreciate that they sent free replacements, and I'm not going to ask them to do it again. I'll probably take Don P's advice and order some caps from OPT for $3 each. He says they fit right.

But my thanks to ES for acting so quickly - their intentions were good. They probably ought to find a new cap supplier, though.


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bherv
Carpal Tunnel
*****

Reged: 03/10/06

Loc: WMass
Re: ES 100 caps leaving smudges - impacting reviews? new [Re: Rick Woods]
      #5978180 - 07/18/13 03:47 PM

I rechecked my ES eyepieces and found that the 30 had a big smudge in the center of the lens. I cleaned it and took the hard plastic cap from my Barlow to replace the soft cap which I put on the Barlow.
Barry


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csrlice12
Postmaster
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Reged: 05/22/12

Loc: Denver, CO
Re: ES 100 caps leaving smudges - impacting reviews? new [Re: bherv]
      #5978216 - 07/18/13 04:05 PM

I just bought the hard two sided Televue endcaps and replaced the original ones.....which brings up a good question, why do eyepiece caps cost so much, it's a cheap to make, easy to shape piece of rubber/plastic?????

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Starman1
Vendor (EyepiecesEtc.com)
*****

Reged: 06/24/03

Loc: Los Angeles
Re: ES 100 caps leaving smudges - impacting reviews? new [Re: csrlice12]
      #5978226 - 07/18/13 04:11 PM

Try pricing the mold for a simple eyepiece cap. You would have to sell thousands before you would recoup your expenses.
And if the material is ozone-proof, stiff, and has your name molded in, increase the cost significantly.


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csrlice12
Postmaster
*****

Reged: 05/22/12

Loc: Denver, CO
Re: ES 100 caps leaving smudges - impacting reviews? new [Re: Starman1]
      #5978250 - 07/18/13 04:25 PM

and I imagine the design and specs for caps of all sorts have been known for a few hundreds of years. How many centuries does it take to get a "mold" or come up with a decent rubber formula? I understand times and materials change, but getting caps to fit....we should have that down by now.......

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Scanning4Comets
Markus
*****

Reged: 12/26/04

Loc: Ontario, Canada
Re: ES 100 caps leaving smudges - impacting reviews? new [Re: csrlice12]
      #5979097 - 07/19/13 02:08 AM

Quote:

I emailed ES and asked about replacement lens caps for my 3 ES100's. They sent them right out; unfortunately, these new ones fall off same as the old ones.
I appreciate that they sent free replacements, and I'm not going to ask them to do it again. I'll probably take Don P's advice and order some caps from OPT for $3 each. He says they fit right.

But my thanks to ES for acting so quickly - their intentions were good. They probably ought to find a new cap supplier, though.

--------------------
- Rick




Same here Rick. I got three replacements sent really quick, but when I tried any the caps on my ES 100's they just fell right off. They are stiff enough, but the fit was really loose for any of the three I had. I'm going to line the inside of all three with something thin for a better fit. I know I shouldn't have to do this, but I have three new caps here, and I may as well do something with them, lol.


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csrlice12
Postmaster
*****

Reged: 05/22/12

Loc: Denver, CO
Re: ES 100 caps leaving smudges - impacting reviews? new [Re: Scanning4Comets]
      #5979490 - 07/19/13 09:57 AM

We could play frisbee with them till the sun goes down.....

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Sarkikos
Postmaster
*****

Reged: 12/18/07

Loc: Scotophobe Maryland, USA
Re: ES 100 caps leaving smudges - impacting reviews? new [Re: csrlice12]
      #5979864 - 07/19/13 02:00 PM

I keep all my eyepieces capped to protect them from my sweaty fingers. I don't want any chance of my reaching into the equipment case at a dark site and getting fingerprints on the lenses.

Mike


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JackeShan
sage


Reged: 06/19/10

Loc: Sweden, Dalarna.
Re: ES 100 caps leaving smudges - impacting reviews? new [Re: Sarkikos]
      #6084127 - 09/16/13 03:07 PM

Just got an ES 100 20mm today, brand new and it also had a smudge on the lens from the cap. From now on I don't put on the cap completely, until I can get some stiffer caps.

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csrlice12
Postmaster
*****

Reged: 05/22/12

Loc: Denver, CO
Re: ES 100 caps leaving smudges - impacting reviews? new [Re: JackeShan]
      #6084135 - 09/16/13 03:12 PM

I just got a bunch of Televue caps from the scope shop @ $2 apiece. These are dual sided 2" caps. I just replaced the loose ones. Apparently, eyepiece cups are technologically impossible to make so that they stay on, yet remove easily......

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herrointment
Post Laureate
*****

Reged: 03/12/11

Loc: North of Hwy. 64
Re: ES 100 caps leaving smudges - impacting reviews? new [Re: csrlice12]
      #6084399 - 09/16/13 05:43 PM

"My eyepieces are free range like God wants 'em to be."

Speaking of...where's the Buddha been lately?


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Shneor
scholastic sledgehammer
*****

Reged: 03/01/05

Loc: Northern California
Re: ES 100 caps leaving smudges - impacting reviews? new [Re: herrointment]
      #6085208 - 09/17/13 02:10 AM

For the very few eyepiece caps I've had which were too loose, I just put some masking tape on the inside wall of the cap. Worked every time.

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