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Celestron Kellner Info Needed

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#1 Blake Andrews

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Posted 18 December 2012 - 09:22 PM

OK, Here are a couple of questions regarding the Rodney Dangerfield of the Celestron Eyepiece family... The Kellner.

I'm trying to pull together a vintage Celestron Kellner family shot for Bill's book project and I've found that I'm not sure which focal lengths are out there. Here's why...

1) From my past research I've led myself to believe that the Celestron Kellner family consisted (at one point of time or another) of 6mm, 9mm, 12mm, 18mm, 25mm and 40mm focal lengths. Is this correct?

2) I'm beginning to suspect that there is no such thing as a Celestron 18mm Kellner. I've been collecting Circle-KD marked Celestron eyepieces (Kellners & Orthos) and I have one of those pale-green Circle-KD boxes marked "18mm Kellner". Interestingly, it came in a grab bag of eyepieces that included an 18mm Circle-KD Ortho. Now, looking through my notes, I've discovered that I've never even seen an 18mm Celestron Kellner (any vintage, any barrel mark). Could it be the the box labeling is actually a typo and the content was in fact the 18mm Circle-KD Ortho?

Anyone care to prove me wrong one way or the other? Thanks!
:grin:

Cheers!
Blake

PS In order to complete the family photo, I'm still looking for the 6mm and 9mm focal lengths.

#2 Sarkikos

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Posted 18 December 2012 - 11:25 PM

I have two 25mm Kellners and one 10mm Kellner. AFAIK, they are all Celestron, but I could be wrong, because they do not show a Celestron brand. Maybe they are Meade's? The 25mm's say "KE 25mm Wide Angle fully coated". The 10mm says "KE 10mm Wide Angle fully coated".

Mike

#3 a_adam

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Posted 19 December 2012 - 05:04 AM

Hey Blake,

I have two of those, 12mm and 25mm. Exact markings on the top are

CELESTRON K. 12mm
CELESTRON K. 25mm

and both are vulcano tops. The barrels are both marked circle T, though these stamps look different compared to recent production circle Ts; the recent ones are distinct T letters inside the circle. In contrast to that, the older Celestron Kellners show a T where all three outer end-points of the letter are merging with the circle.

Hope that is of help, cheers!

-André

#4 hottr6

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Posted 19 December 2012 - 08:11 AM

All my Celestron Kellners (9, 12, 25, 40) are Circle-T volcano tops.

Rodney Dangerfield? I'd call them the the Indiana Jones of the Celestron EP world. Old, crusty, familiar, comfortable (like Indy's leather jacket) and ready for an surprising adventure in any telescope, anywhere, any target.

#5 PiSigma

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Posted 19 December 2012 - 09:47 AM

Does this help? Middle row, the Kellners are all Circle T.

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#6 BillP

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Posted 19 December 2012 - 10:20 AM

FWIW, The 1985 Celestron Catalog Index page lists Kellner focal lengths of: 25mm, 40mm, 60mm, and 70mm (last 2 being 2").

#7 hottr6

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Posted 19 December 2012 - 10:52 AM

Does this help? Middle row, the Kellners are all Circle T.

What a bunch of anachronistic, effete, ugly-looking, agricultural, straw-view eyepieces. You need to get rid of them all and replace them with the latest-and-greatest Ethos/Delos/Blobos that are way nice looking and sure to impress your astro-buddies. Tell ya what, I'll take them off your hands... I'll even pay shipping.




Seriously nice collection. :waytogo:

#8 Jon Isaacs

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Posted 19 December 2012 - 03:37 PM

Blake:

You seem to be missing the 32mm Celestron Kellner. :poke: :)

Jon

#9 scott4comp

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Posted 19 December 2012 - 07:55 PM

Celestron K 18mm "Circle -" w/ dark grey box:

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#10 scott4comp

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Posted 19 December 2012 - 07:56 PM

"Circle -"

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#11 scott4comp

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Posted 19 December 2012 - 07:57 PM

Celestron K 18mm "circle T" w/ light grey box:

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#12 scott4comp

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Posted 19 December 2012 - 07:58 PM

"Circle T"

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#13 Blake Andrews

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Posted 19 December 2012 - 08:33 PM

Does this help? Middle row, the Kellners are all Circle T.


Thanks, that does help. The 18mm Kellner does exist. Perhaps you should send Bill a glamor shot of your Kellners!

;)

Cheers!
Blake

#14 Blake Andrews

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Posted 19 December 2012 - 08:36 PM

FWIW, The 1985 Celestron Catalog Index page lists Kellner focal lengths of: 25mm, 40mm, 60mm, and 70mm (last 2 being 2").


Thanks, Bill.

It gets more interesting the farther back in time you go. Celestron's Circle-T Kellners from the 1960s and 1970's were very nice eyepieces in their day.

It looks like we can confirm 6mm, 9mm, 12mm, 18mm, 25mm, and 40mm focal lengths in 1.25" barrels and 60mm and 70mm focal lengths in 2" barrels.

Cheers!
Blake

#15 Blake Andrews

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Posted 19 December 2012 - 08:38 PM

Blake:

You seem to be missing the 32mm Celestron Kellner. :poke: :)

Jon


Hmmmm,

Quite right Jon. I guess I'll just have to settle for my University Optics 22mm Circle-A.

:grin:

Cheers!
Blake

#16 Blake Andrews

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Posted 19 December 2012 - 08:46 PM

Celestron K 18mm "Circle -" w/ dark grey box:


Thanks!
I love seeing those Circle - eyepieces! :jump:
Cheers!
Blake

#17 Glen A W

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Posted 19 December 2012 - 09:07 PM

I still use the Celestron 9, 12, and 18, just like the ones pictured. They are pretty good eyepieces. Very contrasty, but the 9 in particular is prone to ghosting on Jupiter. Still, on the Moon and planets these are hard to beat. I also have the 6 but it is so narrow I can't stand it at such high power.

Jon, I am so jealous of your collection I can hardly stand it. GW

#18 CharlieB

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Posted 20 December 2012 - 08:21 AM

There was also an 18mm Kellner in .965 format that came with the old orange tube C90. It's a pretty good eyepiece.

#19 Jon Isaacs

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Posted 20 December 2012 - 10:03 AM

There was also an 18mm Kellner in .965 format that came with the old orange tube C90. It's a pretty good eyepiece.


Good point. I had a 0.965 inch Celestron Kellner that was somewhere between 20-25mm and was quite good...

Jon

#20 bgi

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Posted 25 June 2014 - 07:26 AM

Does this help? Middle row, the Kellners are all Circle T.


The middle row 40, 25, 12, 6 look EXACTLY like the old Meade Kellner's I had back in the mid 70's. I gave them away with my home-made 8" newt. /sadface Even the gray box shown a few posts down match the boxes I had.

#21 roscoe

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Posted 25 June 2014 - 06:01 PM

There was also an 18mm Kellner in .965 format that came with the old orange tube C90. It's a pretty good eyepiece.


I have a Celestron 18-K .965 that is made by Vixen. It's a good EP in my long-tube 60's.

#22 roscoe

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Posted 25 June 2014 - 06:03 PM

Also, a 30-K and a 10-K .965

#23 csrlice12

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Posted 27 June 2014 - 01:15 PM

There's a .965 40mm Celestron Kellner too....






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