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Eyepieces

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#226 Chuck Hards

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Posted 06 August 2014 - 09:55 AM

I've got two of those Edmund military eyepieces.   If I remember, I'll post pics when I get home tonight.  Very nice, especially in a rich-field application or finderscope, as the ad suggests.


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#227 Dave M

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Posted 06 August 2014 - 10:08 AM

Attached File  Masuyama60mm-CN1.jpg   89.15KB   33 downloadsAttached File  Masuyama60mm-EL-CN.jpg   93KB   27 downloads

 

Acquired this 2" 60mm Masuyama at a excellent price from a Great friend last year.

Weight wise its 1 lb 13.8 oz or 845 Grams and its as tall as a 16 oz beer can, in the second image i removed

the threaded top ring that serves as a eye placement guide, removed to show the size of the eye/field lens. Cans and Pentax 7mm for scale. 

This eyepiece is the Flagship of my classics eyepiece collection :grin:  



#228 Chuck Hards

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Posted 06 August 2014 - 07:59 PM

I lied, I actually have 3 of those Edmund eyepieces.  All are in finderscopes.  Here is the one in my 10" f/5.6.

EdmundFinder01_zpsb7bd66e5.jpg

 

The other 2 are not mounted at present.

EdmundFinder02_zps0b2005aa.jpg

 

The eyepiece itself.  I polished the brass cell on this one.  Need to turn a 2" focuser adapter for it one of these days.

Edmundeyepiece_zps95e344e9.jpg


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#229 Chuck Hards

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Posted 06 August 2014 - 08:08 PM

Getting organized in the shop tonight, so I took pics of the bulk of the eyepiece collection, 95% are "classics".

 

My current oldest eyepiece case, goes back nearly 30 years.  Almost everything in there is University Optics, except the filters which are various makers.  Colored filters in white boxes, LPR & narrowband filters to their right.   Klee Barlow (red cap), with Orion tri-mag below it.  Complete set of 1.25" Zebra Konigs, 11mm & 16mm Widescans in 1.25".  32mm Widescan in 2", 40mm 7/70 in 2", Limited Edition 55mm Plossl 2", 2x 2" Barlow, 25mm Konig 2".  Also my 1.25" Erfles, 16mm, 20mm, 25mm, 32mm.  Couple of flat-top old Orthos as well.

UOcase_zps5c93c1fb.jpg

 

The "Everything Else" case, which I just fitted with a new foam insert today.   I had a spare pistol case doing nothing, so now it has a purpose in life.  Actually there are more accessories so I guess I need a third case.  More diagonals, including the 2" stuff, extension tubes, etc.; they may as well go into a case too.  1.25" on the left, .965" on the right.  There are 6 matched pairs in the approximate center, for the bino viewer.  Still putting caps on eyepieces at this stage but it looks more impressive with most of the caps off for the photo.

EverythingElsecase_zps9296e403.jpg

 

I used closed-cell packaging foam, removing the egg-crate foam rubber insert but leaving the top egg crate in place. The eyepiece holes were drilled on a drill press with a Forstner bit.  The foam was cut-down from a larger sheet to fit the case, using the table saw.Foamfabrication001_zps654b618e.jpg


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#230 PawPaw

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Posted 07 August 2014 - 09:42 AM

Another Edmund military surplus eyepiece. This is the same eyepiece that came with the 8" F/8 reflector finder. The ad is from Sept 1970.

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#231 Rich (RLTYS)

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Posted 08 August 2014 - 05:44 AM

I had one of them. Edmund also sold an adapter so you could mount the eyepiece in a standard 1.25" focuser. That eyepiece gave great views with my 6" f8 refl. :waytogo:

 

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#232 Chuck Hards

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Posted 08 August 2014 - 07:56 AM

With the lens specifics right there in the ad, you could probably make a decent-performing clone. 



#233 John Jarosz

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Posted 08 August 2014 - 09:01 AM

Here are my two vintage eyepieces.  My one and only Televue EP, and another 31mm Erfle from the 60's.  The Erfle is now my finder eyepiece.  
 
Chuck:  I had the 1/2" version of that Ramsden eyepiece you showed a few pages back.  I bought it in '64 for $3.00 at the Edmund outlet in Chicago (forget the name).

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#234 Svezda

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Posted 08 August 2014 - 01:07 PM

I tried posting this in the 'Eyepieces" forum but I guess no one there knows anything about it. A friend of mine gave me a few eyepieces and one of them was this "Owens W15X" made in Japan. The 1.25" barrel was extremely dirty and covered with a "Liquid Nails" like residue. I decided to clean it up a little and try it out.

11558923205_6b1365f14e_z.jpg

Jupiter was the target using an older Meade 856 8" f/6 scope. Eye relief was pretty tight. The image was fairly bright with some color fringing but there was some fair detail.

11559053953_227677d960_z.jpg

Does anyone here have any information regarding this eyepiece? I'm curious as to who made it and how old it is. Was it sold with a particular brand of telescope?

This is a microscope eyepiece and looks like many Huyghens types I've seen, incl one sold by Edmund Scientific that I bought in about 1979. The 15x indicates that it has a focal length of 250/15 = 16.7mm (not 31mm as another poster typed) since the standard for microscopes is a 250mm FL. So, a typical 10x microscope eyepiece has FL = 25, 20x = 12.5, 30x = 8.3. You don't see too many 15x like this but sometimes you see 8x = 31mm



#235 badback

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Posted 08 August 2014 - 03:29 PM

Well...I wiggled it, and jiggled it, and removed it from it's holder. I took some photos and added more accurate dimensions. It certainly seems similar to the Edmund pieces but.. the dimensions are different.  IMO this is an excellent finder/wide-field eyepiece. :)

Any more suggestions as to what this is? :confused:

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#236 terraclarke

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Posted 08 August 2014 - 03:40 PM

It's longer than the Edmund eyepiece I used to have that was the exact one from the old advert in the catalog. Mine didn't have the 4 holes in the side other. Yours is just a bit bigger. Mine was just like Chucks.



#237 Chuck Hards

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Posted 05 May 2015 - 06:58 PM

I finally plugged a hole in my 1.25" classic Kellner lineup.  I found a 30mm, branded for Lumicon.  The 20mm UO is probably the oldest of these, not a true volcano-top, but I have procured one that matches the rest and will be picking it up in a month or so.  The 18mm is really an outstanding eyepiece, it is more recent than the others.

 

Kellner%20lineup_zpsvudfsdwb.jpg


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#238 Bomber Bob

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Posted 05 May 2015 - 07:14 PM

The 18mm is really an outstanding eyepiece...

 

Chuck, is it branded TELE-OPTICS?  I just got one to use with the Edmund, and it is an excellent Kellner.


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#239 Chuck Hards

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Posted 05 May 2015 - 07:23 PM

The 18mm is really an outstanding eyepiece...

 

Chuck, is it branded TELE-OPTICS?  I just got one to use with the Edmund, and it is an excellent Kellner.

 

 

Yes sir, JW, TELE-OPTICS.  Years ago I bought two of them, kept one and gave the other to my friend, who also still has his.  One of the best Kellners I've ever used.  Wasn't it Pocono Mountain Optics who sold them?



#240 Bomber Bob

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Posted 05 May 2015 - 07:27 PM

Wasn't it Pocono Mountain Optics who sold them?

 

I vaguely remember the brand... No maker's mark, but there's some very faint black flowing script on the chrome barrel -- too faded to read.  Seems to be very well made - and heavy.  Superb glass & coatings.

 

No Joy:  With my magnifier I see that a previous owner wrote his name on the barrel with a black fine point Sharpie -- Steve xxxd Sxxxxxxr


Edited by Bomber Bob, 05 May 2015 - 07:31 PM.


#241 DocFinance

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Posted 05 May 2015 - 09:22 PM

I finally plugged a hole in my 1.25" classic Kellner lineup.


Wow, nice bunch of glass there...
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#242 bremms

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Posted 06 May 2015 - 12:12 PM

I was using a Celestron circle T 25mm Kellner the other day and was pretty happy with the performance. It was a use the classic EP night. Winners..

18 and 12.5mm UO VT Orthos, Meade RGO 28 10.5 and 7mm.  The RGO's are just plain good.  Tried a 25mm 1940's Ramsden and a 50mm 1880's Huygens. Plus a couple WW2 surplus things.


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#243 catboat

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Posted 06 May 2015 - 12:53 PM

Any one recognize this .965  20mm Huygens volcano top?   Certainly Japanese but no branding.  

 

Very well built.  Good finish.  'Downward sloping' lettering.  I tried it out with a Towa 339 on open clusters -- surprisingly nice.

 

Attached File  H-20mm huygens .jpg   17.83KB   22 downloads


Edited by catboat, 06 May 2015 - 03:02 PM.

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#244 Bomber Bob

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Posted 06 May 2015 - 02:51 PM

UO Zoom and 1.25" volcano tops I collected for the Edmund 4" & Tinsley 6".  The UO has the Mercedes symbol;  the two Jaegers front left have none;  most of the others are Tani.  The TELE-OPTICS KE18 is the big'un in the middle.

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#245 catboat

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Posted 06 May 2015 - 04:05 PM

Very nice!  I’ve got the B&L labelled version of the circle-Benz zoom. 8.4-21mm.  Bought it used, but unused.  Haven’t gotten to trying it out.

 

Attached File  B&L 8-21mm zoom.jpg   54.56KB   11 downloads 


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#246 Chuck Hards

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Posted 06 May 2015 - 06:36 PM

Any one recognize this .965  20mm Huygens volcano top?   Certainly Japanese but no branding.  

 

Very well built.  Good finish.  'Downward sloping' lettering.  I tried it out with a Towa 339 on open clusters -- surprisingly nice.

 

attachicon.gifH-20mm huygens .jpg

 

Edward, I recognize it.  I have a couple of Tasco 7TE-5 scopes that came with a set of that style, including that very same H20mm.  Excellent eyepiece.  Definitely Tasco brand in my case, though I have no idea who actually made them.  I'm guessing that they were probably standard equipment for any number of Japanese export brands at the time.


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#247 catboat

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Posted 07 May 2015 - 01:29 AM

Thanks, Chuck.  I’ve been wondering about this eyepiece for awhile.  The fit-and-finish put my Towa kit eps to shame.  

 

I googled up some 7TE-5 info.  Great looking scope.  Must be a pleasure to use.  


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#248 Chuck Hards

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Posted 07 May 2015 - 12:29 PM

Thanks, Chuck.  I’ve been wondering about this eyepiece for awhile.  The fit-and-finish put my Towa kit eps to shame.  

 

I googled up some 7TE-5 info.  Great looking scope.  Must be a pleasure to use.  

 

The 7TE, in it's various incarnations, is my favorite Tasco.  The mount is nicely sized for the payload, smooth and well-built, and tracks nicely with the Tasco motor drive.    The 1000mm FL version is optically superior to most other 60mm achromats I've looked through.  The eyepieces did vary though, depending on year, and the 7TE had a good long run.

 

You wouldn't think just 16mm more aperture would result in a much larger telescope overall, but the Tasco 10/15TE is just a beast compared to the 7TE.  I also think the 7TE is more aesthetically pleasing in it's proportions than it's larger brother.  It's kind of a sweet spot in overall size, aperture, and FL.  Other brands have produced winners using the same formula.

 

It is definitely a pleasure to use, Edward.


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#249 DreamWeaver

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Posted 14 May 2015 - 10:14 AM

Did anyone here know that EDSCORP and Meade had merged at one time?  Going by my recent Goodwill find it looks like they had.  If I get tired of looking through the 25mm Ortho, I can just flip it over and look through the modified achromatic.  Now if I can just figure out a way to get it to go into the diagnol!   :lol:

 

Eyepiece_zps1ivifr1f.jpg


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#250 Chuck Hards

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Posted 14 May 2015 - 10:38 AM

The "Dr. Doolittle" eyepiece.


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