Steve_M_M
scholastic sledgehammer
Reged: 06/09/04
Posts: 976
Loc: Moorpark, CA
|
|
Once in a while, one of those Ebay auctions falls to one of our Classic Forum members. Today, I picked up this..
Kosmos Ebay
I will post a couple more pictures, but the Ebay ad has some nice ones.
The telescope appears to be a 68mm f13.2 (just a close guess at this point).
After picking up the telescope, I stopped by Dan Schechter's house for a quick run through. The telescope is in good condition. The focuser is smooth and the focuser shaft is original, although quite thin. It has a slight wobble which I will repair easily. The tube is dent free with a few paint chips that have been repainted.
Dan and I looked at the moon and the lens performed well. It has a slight scratch of about 10mmm on one edge, but does not appear to affect the view. The telescope appears to have been made for table top use as you literally have to lay on the ground to look through it. I took a picture next to a door knob and included a standard flashlight so you can visualize the size.
The seller told Dan the ocular holder was about 1.32". It turns out it is actually about 1.20" as is the eyepiece. I will do accurate measurements tomorrow unless someone else (Michael) knows. It is definitely obscure. Finally, there is no cap or dewshield and clearly marks indicating one did exist.
The mount is Zeiss like. It has gear reduction on the RA axis similar to my 1950's Goto and Zeiss mounts I have seen. It is a work of art and is in good working condition. The knobs are Bakelite which should help us determine the age. Anyone have any guesses?
The only issue is the Dec Axis is either missing some parts or I have not set it up right. I have attached a picture showing the Dec Axis. As you can see, the telescope rides on a plate, like a tangent arm. There is another plate below that that houses an adjustment pin. This provides slow motion. Above the adjustment pin you can see a Set screw. The problem is there is nothing to hold the telescope against this pin except gravity. So, the telescope just spins around. Does anyone have any ideas on what is wrong here? There appears to be some type of spring loaded mechanism missing. As Dan said, I can get it to work with just a simple rubber band 
This is a really cool telescope. I can't wait for some clear skies to check it out!
Steve
--------------------
1956 Goto Optical 6" f15 Observatory Refractor
From the Titan Observatory as featured in S&T 1957-1959
&
1961 Nishimura 6" Reflector
Edited by Steve_M_M (10/27/09 01:46 AM)
|
Steve_M_M
scholastic sledgehammer
Reged: 06/09/04
Posts: 976
Loc: Moorpark, CA
|
|
The Dec Assembly...
--------------------
1956 Goto Optical 6" f15 Observatory Refractor
From the Titan Observatory as featured in S&T 1957-1959
&
1961 Nishimura 6" Reflector
|
mustgobigger
Carpal Tunnel
Reged: 06/12/07
Posts: 2421
|
|
congrats steve,
i must have looked at that 50 times in the last week,
truly a work of art.
several of us tried to get him to ship but it was a no go.
i was going to post a who got it tonight.
try drawing that adjustment all the way out and close part
then look on other end and see if there is a little nub that would hold a spring to keep pressure on the adjustment.
just a thought.
congrats again,
Brian
--------------------
RV-6
Meade 826
Meade 880 Deluxe
Unitron's 114,128,140,142,150,152,155,160
4" Jaegertron
4.5" A.E f/14 Refractor
4" f/15 Edmund's Refractor
|
Dan /schechter
sage
Reged: 12/21/06
Posts: 365
Loc: Long Beach, Calif.
|
|
I can second everything Steve said. This is one cool telescope. It is very compact and surprised me on how little it was. I own a Zeiss AS 80/1200 from the early 1900`s and had visions of it being 7/8`s that size. Its not, but it is very solidly built, oozes German engineering, gave a great image of the daylight moon and moves very smoothely in RA.
Steve mentioned to me that he wanted this telescopoe for his office and it will be perfect. When I looked at the EBay picture of this telescope and saw a pier mounted equatorial telescope, I never imagined it would fit or need to be on a table for convient viewing, but it does.
Congratulations Steve and thanks for stopping by and showing it to me. You said on the phone it would cause me to drool with envy and it does.
Dan
|
Happy-Idiot
Carpal Tunnel
Reged: 04/06/06
Posts: 2818
Loc: 3rd Rock
|
|
Steve you are a great person to have on this forum, you always seem to find the most interesting telescopes. The scope is a work of art, almost Jules Verne-ish.  I don't know too much about older scopes, but what i do know is that is in the right hands. Enjoy it Steve, i know you will share it with us in pictures and reports.
--------------------
Brian
A small scope that gets used often is a better investment than a big scope that stays in the closet.
Unitrons, you spend more time looking at them than you do through them.
|
Jae
professor emeritus
Reged: 04/13/06
Posts: 559
Loc: near Boston
|
|
Quote:
The Dec Assembly...
Steve,
I agree with you that it may be missing a spring loaded piece or even just a spring that attaches to the end of screw and through the loop hole. Would be interesting to see an original catalog picture. Maybe one of our German members could find one out of Stuttgart....someone that owns an old porsche there might have one.. 
Hey - nice pick up ! I couldn't believe the great condition !
--------------------
Jae
|
clintwhitman
Caveman
Reged: 01/01/07
Posts: 2429
Loc: ValVerde CA(SoEasyaCavemanCanD...
|
|
That is one strange tangent arm setup. The needle point fine adjustment looks out of place for a dec adjustment? Look like something off a carberator... LOL. Like I was saying today Steve the knobs are leading me to think it was made some time in the 40s or maybe 30s but the BakeOlite seems to have been the big deal in the 40s and 50s.
I would give the scope a 10 on the rare scope list!! I to looked high and low for information on it to see if Zeiss might have made the lens, but did not find anything really reffering to Kosmos telescopes, just books and otical devices like microscopes!! Plus it was all in German and my German is spotty at best... Awsome that you won it and I hope to see it soon. Dan If you liked it, it must be cool!!
Clint 
PS Steve what did you think of the Schechter Optical Museum of long Beach!! I was like a kid in a candie store!! 
--------------------
Clint&Debbie Whitman (aveman
1960s 6"F15 Jaegers-Unipons by John Pons on a Byers 812, 1947 4" F15 TINSLEY, 1965 10" F8 CAVE, 1950 5CM & 6.5CM Nippon Kogakus (the twins), 1960s UNITRONS a 152 restored a 160 numbered green lens original mint a 114 original 50s mint, 1950s UNITRON M100 100mm F15 OTA, WO 80mm Florite, ASTROPHYSICS 155 EDFS on LOSMANDY G11, a bunch of Tascos,Sears Mayflowers The list goes on Add infinitum.
|
donnw
super member
Reged: 08/03/08
Posts: 166
Loc: Maryland
|
|
Hi Steve:
Congrats on a really cool scope - and I think one tremendous deal too! That should have gone for at least twice that price, but the seller was fixated on a local purchaser who could pick it up in person the next day. (I tried all kinds of options to bid on it - even having a friend pick it up but he was beyond reason :-( ... Definitely glad to see a CNer got it (so we can see some more cool photos and drool a little more ;-) Cheers...
--------------------
Peace & Blessings,
Donn Williams
Member - AAVSO
----------------------------------
Celestron EdgeHD 11 on CGE in SkyShed POD GL5
Meade Lightbridge 12", SN10, LX200 Classic 8", AR5, 314 Brass & ETX125PE
Lunt LS60T/DS, Stellarvue SV102ED, SV80BV, SV80/9D, SV NH2
Cave Astrolla 8", Zeiss Telementor II, Unitron 114, 128, 142
Towa 339, Royal Astro 76/1200, Pentax J80, Borg 100, AT 102-F/11
Goto 105, Various Sears/Tasco/Selsi/Towa 60-80mm's
|
tim53
Pooh-Bah
Reged: 12/17/04
Posts: 1447
Loc: Highland Park, CA
|
|
Wow, how did I miss seeing that one?
Truly a beaut!
I must have seen the name and thought it was some modern Chinese scope!
-Tim.
--------------------
"We`re just waiting looking skyward as the days come down.
Someone promised there`d be answers, if we stayed around."
-Orchestral Maneuvers in the Dark, "The Romance of the Telescope"
|
mustgobigger
Carpal Tunnel
Reged: 06/12/07
Posts: 2421
|
|
tim,
i posted it in vintage scope ads the night it went up for sale.
i knew one of you westcoasters would get it.
Brian
--------------------
RV-6
Meade 826
Meade 880 Deluxe
Unitron's 114,128,140,142,150,152,155,160
4" Jaegertron
4.5" A.E f/14 Refractor
4" f/15 Edmund's Refractor
|
Happy-Idiot
Carpal Tunnel
Reged: 04/06/06
Posts: 2818
Loc: 3rd Rock
|
|
Quote:
i knew one of you westcoasters would get it.
better skies= better scopes.
Not too many nice scope purchased near NYC, even though thats where some of the heavy hitters came from. Unitron, Jaegers, Lafayette..... 
--------------------
Brian
A small scope that gets used often is a better investment than a big scope that stays in the closet.
Unitrons, you spend more time looking at them than you do through them.
|
Lew Chilton
Pooh-Bah
Reged: 10/20/05
Posts: 1022
Loc: SoCal
|
|
Steve,
Nice score! I'd like to see it sometime.
(Did you sell the Nishamura yet?)
-Lew
--------------------
I don't get no respect, but my scopes do! 
----------------------------------------------
1961 Swift 60mm model 839 (2); 2003 TV-102/GM-8; 1959 8" f/6 Treckerscope; 1959 8" f/7.4 Murray Scope; 1959 Fecker Celestar-4; 1978 4" Edmund Astroscan; c. 1986 4-inch Celestron-Vixen SP-C102; c. 1950 20X60 Saturn spotting scope; 1963 7X50 Nippon Kogaku binoculars; Unitron #114 alt-az mount (Swifty-tron)
|
Steve_M_M
scholastic sledgehammer
Reged: 06/09/04
Posts: 976
Loc: Moorpark, CA
|
|
Tonight is looking to be clear, so I should have a good chance to test it out.
I am going to need a dew shield. It would need to be about 83mm or so inside diameter. Could you all check your various scopes and see if any of the common vintage refractors have an 83mm dew shield??
Until some of our german members pipe in, I am going to have to just wrap rubberbands around the dec axis so I can use the telescope.
Clint, yes Dan's house is quite the optical museum. It is really amazing. Dan, maybe you could put together a video such as Rod did? And Lew, I still have the Nishimura. It is sold, but I still get to use it :-)
Steve
--------------------
1956 Goto Optical 6" f15 Observatory Refractor
From the Titan Observatory as featured in S&T 1957-1959
&
1961 Nishimura 6" Reflector
|
Steve_M_M
scholastic sledgehammer
Reged: 06/09/04
Posts: 976
Loc: Moorpark, CA
|
|
As has been the case for the past couple weeks....the mush rolled in right after dark. I will check it out next weekend.
I am still looking for thoughts on the Dec Axis. Rubberbands work well, but just kind of take away for the overall appearance
--------------------
1956 Goto Optical 6" f15 Observatory Refractor
From the Titan Observatory as featured in S&T 1957-1959
&
1961 Nishimura 6" Reflector
|
akman1955
sage
Reged: 09/07/09
Posts: 363
Loc: Alaska, USA
|
|
Nice scope steve!! Quality it is and more info / pictures on scope. congradulations! ...john 
|
AaronM
super member
Reged: 02/02/06
Posts: 340
Loc: NRW, Germany
|
|
Hello Steve,
I had the same mount, but unfortunately on my mount exact the same part was missing. I helped me with a simple spring/festher.
I'm sorry to say, that I have no more detailed infos for you. And : it's even here in germany very difficult to find old KOSMOS catalogues or data sheets !
The mount you have was produced nearly without modifications for a lon time ( perhaps from 1925 till 1960!!).
Regards Michael
|
clintwhitman
Caveman
Reged: 01/01/07
Posts: 2429
Loc: ValVerde CA(SoEasyaCavemanCanD...
|
|
U2 rocked the Rose Bowl Last night!!! Caveman and Cavegirl gotto Go!!! Awsome Star Gazeing!!!
--------------------
Clint&Debbie Whitman (aveman
1960s 6"F15 Jaegers-Unipons by John Pons on a Byers 812, 1947 4" F15 TINSLEY, 1965 10" F8 CAVE, 1950 5CM & 6.5CM Nippon Kogakus (the twins), 1960s UNITRONS a 152 restored a 160 numbered green lens original mint a 114 original 50s mint, 1950s UNITRON M100 100mm F15 OTA, WO 80mm Florite, ASTROPHYSICS 155 EDFS on LOSMANDY G11, a bunch of Tascos,Sears Mayflowers The list goes on Add infinitum.
|
Astrojensen
sage
Reged: 10/05/08
Posts: 219
Loc: Bornholm, Denmark
|
|
A little more info here:
http://www.achromat.de/oldpage/html/kosmos_1960_g1.html
Clear skies!
Thomas, Bornholm
|
mare233
member
Reged: 10/25/09
Posts: 15
|
|
Hi,
my name is Martin and i am from Germany, so excuse my bad school english. I read about your scope steve, so i logged in the first time. I am collecting Kosmos scopes.
About your scope:
Kosmos in Stuttgart never build scopes on its own. They only made their label on it.
Kosmos made only books and from the twenties on they began to sell science kits, microscopes,.... Ca. 1920 they sold their first scopes until the eighties. In the beginning they got them from Merz until Merz closed. From the sixties to the eighties they got them from Lichtenknecker. In the time between i don´t know there they got them. 4 months ago I got a catalouge from Tremel, and Kosmos and Tremel looked near the same, this can be a hint. The history is very difficult, because in World war two the house from Kosmos was bombed and all papers were destroyed.
Your scope is a "Kosmos E 68" from the fifties. In the sixties the knobs on the eyepieceholder (i don´t know the english word) were bakelit.
Before this time all knobs were metal.
For the missing part give me some time so I can give you a detailed photo from the missing part. I have some of this scopes at home (and no i have no Porsche / Daimler);-).
I hope i could help you a little bit. If you have more questions please feel free to ask.
greets
Martin
P.S.: If you don´t know what to do with this thing, send it to me.
|
Steve_M_M
scholastic sledgehammer
Reged: 06/09/04
Posts: 976
Loc: Moorpark, CA
|
|
Thomas/Michael/Martin,
Thank you so much for the information. It is great to see little pieces come in and help me form the complete picture. The catalog link is great...Thanks!
Martin, any pictures you have of the Declination assembly would be VERY much appreciated. If you have a Tremel catalog, I would love a scan of that too. I guess you are saying that my telescope is 1950's and therefore is not Lichtenknecker or Merz???Correct?
Seems like Kosmos is the Tasco of Germany...parts from all over and put your label on the finished product.
Steve
--------------------
1956 Goto Optical 6" f15 Observatory Refractor
From the Titan Observatory as featured in S&T 1957-1959
&
1961 Nishimura 6" Reflector
|
mare233
member
Reged: 10/25/09
Posts: 15
|
|
Hi,
it´s more difficult. The model before yours is the Kosmos D 61. It was sold in a time when Merz was closed. The Kosmos d61 and the Tremel look very similiar. I have no evidence that Tremel made the early Kosmos E 68. Lichtenknecker and Wachter made the Kosmos E68 later in the sixties and the mount is very different than before.
So I don´t know who made your telescope. It wasn´t Merz or Lichtenknecker.
The problem is that (as i know) only Merz marked the objektives.
The comparison to Tasco is very good.
The telescopes for Kosmos were only made for Kosmos.
One thing to the eyepiece: The Photo isn´t very good, but i think it is not from kosmos.
And the Kosmos telescope weren´t very cheap. They were about 700,- DM, a lot of money for these times.
I have no scanner, so if you like to have scans, i need to copy the cataloges and send it to you.
Martin
|
Steve_M_M
scholastic sledgehammer
Reged: 06/09/04
Posts: 976
Loc: Moorpark, CA
|
|
Martin,
By the way...Welcome to Cloudynights! It is great to have you here as a member and poster.
A copy of the catalog would be great. I will send you a message with my info and I can get you the postage due.
I look forward to any pictures you have of your Kosmos telescopes! I will take a picture of the eypiece when I get home from work and post it here.
Steve
--------------------
1956 Goto Optical 6" f15 Observatory Refractor
From the Titan Observatory as featured in S&T 1957-1959
&
1961 Nishimura 6" Reflector
|
Steve_M_M
scholastic sledgehammer
Reged: 06/09/04
Posts: 976
Loc: Moorpark, CA
|
|
More Kosmos
How about Busch as a possible manufacturer after Merz? Or was Busch gone too by then??
--------------------
1956 Goto Optical 6" f15 Observatory Refractor
From the Titan Observatory as featured in S&T 1957-1959
&
1961 Nishimura 6" Reflector
|
Steve_M_M
scholastic sledgehammer
Reged: 06/09/04
Posts: 976
Loc: Moorpark, CA
|
|
Eyepiece
--------------------
1956 Goto Optical 6" f15 Observatory Refractor
From the Titan Observatory as featured in S&T 1957-1959
&
1961 Nishimura 6" Reflector
|
Steve_M_M
scholastic sledgehammer
Reged: 06/09/04
Posts: 976
Loc: Moorpark, CA
|
|
#2
--------------------
1956 Goto Optical 6" f15 Observatory Refractor
From the Titan Observatory as featured in S&T 1957-1959
&
1961 Nishimura 6" Reflector
|
Steve_M_M
scholastic sledgehammer
Reged: 06/09/04
Posts: 976
Loc: Moorpark, CA
|
|
I disassembled the mount and OTA and cleaned everything. It really looks nice now.
By the way, the RA gear is stamped "FV71" if that helps.
--------------------
1956 Goto Optical 6" f15 Observatory Refractor
From the Titan Observatory as featured in S&T 1957-1959
&
1961 Nishimura 6" Reflector
|
AaronM
super member
Reged: 02/02/06
Posts: 340
Loc: NRW, Germany
|
|
Hello Steve and hallo Martin,
at first : wellcome Martin, schön, einen Landsmann hier zu haben !
Unfortunately I sold my Kosmos mount 2 years ago...and I can't find my old postings about it in the CN archive...
But I have found a few pictures again.
I guess, if Martin collects Kosmos items, he's the real expert to give us more and detailed informations !
But in anycase : I saw ( owned ) myself 3 Kosmos E68 refractors with mount in my life and they were all very good in mechanics and optics ! So you did a nice find Steve ! Very disappointing for me was a Kosmos refractor 100/1500 a friend of mine owned. The results of an optics test was very poor ( Strehl 0.61 ). Here are my few photos..
seems to be, that the spring was a part that is easy going missing, because on all 4 or 5 Kosmos mounts I have seen, this part was missing !
Kind regards, liebe Grüsse - Michael
|
AaronM
super member
Reged: 02/02/06
Posts: 340
Loc: NRW, Germany
|
|
pic 2
|
AaronM
super member
Reged: 02/02/06
Posts: 340
Loc: NRW, Germany
|
|
pic3
|
AaronM
super member
Reged: 02/02/06
Posts: 340
Loc: NRW, Germany
|
|
another
|
AaronM
super member
Reged: 02/02/06
Posts: 340
Loc: NRW, Germany
|
|
pic
|
Steve_M_M
scholastic sledgehammer
Reged: 06/09/04
Posts: 976
Loc: Moorpark, CA
|
|
You have to love the way the RA drive attaches at a 90 degree angle to the slow motion control.
based on what I see, I think my mount and telescope must be older than what you have posted. I will post some closeups of mine tomorrow.
Steve
--------------------
1956 Goto Optical 6" f15 Observatory Refractor
From the Titan Observatory as featured in S&T 1957-1959
&
1961 Nishimura 6" Reflector
|
Jae
professor emeritus
Reged: 04/13/06
Posts: 559
Loc: near Boston
|
|
The right angle pinion and drive gears remind me of parts inside the old Mitchell fishing reels (300, etc.)- similar era design would be my guess. Cool.
--------------------
Jae
|
mare233
member
Reged: 10/25/09
Posts: 15
|
|
Hi,
Busch´s produktion of telescopes endet with the beginning of World war II.
Martin
|
mare233
member
Reged: 10/25/09
Posts: 15
|
|
So photos:
This is a E 68 a little bit after yours
|
mare233
member
Reged: 10/25/09
Posts: 15
|
|
another:
|
mare233
member
Reged: 10/25/09
Posts: 15
|
|
pic 3
|
mare233
member
Reged: 10/25/09
Posts: 15
|
|
so to the part that´s missing:
|
mare233
member
Reged: 10/25/09
Posts: 15
|
|
Here´s the spring that´s missing with the two screws
|
mare233
member
Reged: 10/25/09
Posts: 15
|
|
And here two pics from a D61. You can see the difference: no bakelit.
|
mare233
member
Reged: 10/25/09
Posts: 15
|
|
The focuser with typical eyepieces. So i don`t think that yours isn´t Kosmos:
|
Steve_M_M
scholastic sledgehammer
Reged: 06/09/04
Posts: 976
Loc: Moorpark, CA
|
|
Thank you so much for the pictures. They were very helpful and I should be able to make the proper piece fairly easily.
Steve
--------------------
1956 Goto Optical 6" f15 Observatory Refractor
From the Titan Observatory as featured in S&T 1957-1959
&
1961 Nishimura 6" Reflector
|
Steve_M_M
scholastic sledgehammer
Reged: 06/09/04
Posts: 976
Loc: Moorpark, CA
|
|
I pulled the lens from the cell today. It appears to be cemented. The alignment marks are not matched.
--------------------
1956 Goto Optical 6" f15 Observatory Refractor
From the Titan Observatory as featured in S&T 1957-1959
&
1961 Nishimura 6" Reflector
Edited by Steve_M_M (10/27/09 10:35 PM)
|
mikey cee
Post Laureate
Reged: 01/18/07
Posts: 3520
Loc: bellevue ne.
|
|
Well I'll be. An extension spring that has two screws threaded into it. Learn something new every day.   Mike
--------------------
7x35 and 10x50 sears tower binocs, 3" f/10 edmunds reflector, 2.4" f/11.7 manon refractor, 6" f/8 jaegers refractor, "The 8 Ball" 8" f/13.3 brandt refractor, 3" f/15.8 sans&streiffe refractor, 3.1" f/15 selsi refractor(towa 339), 2.4" f/15 sears refractor, selsi 30x30mm spyglass, criterion 5-draw 25x45x75x spyglass(1957), 4.25" f/14.8 tasco 20te.
|
Dan /schechter
sage
Reged: 12/21/06
Posts: 365
Loc: Long Beach, Calif.
|
|
Hi Steve,
Are you sure they are cemented? I once swore a doublet of mine was cemented until the two lenses came apart.
Dan
|
Steve_M_M
scholastic sledgehammer
Reged: 06/09/04
Posts: 976
Loc: Moorpark, CA
|
|
How do I check without damaging the lens? If it is not cemented, wouldn't I expect to find some type of spacer?
--------------------
1956 Goto Optical 6" f15 Observatory Refractor
From the Titan Observatory as featured in S&T 1957-1959
&
1961 Nishimura 6" Reflector
|
AaronM
super member
Reged: 02/02/06
Posts: 340
Loc: NRW, Germany
|
|
Dear Steve,
please don't try to open the objective ! These lenses were allways cemented !!
CS Michael
|
Steve_M_M
scholastic sledgehammer
Reged: 06/09/04
Posts: 976
Loc: Moorpark, CA
|
|
Don't worry, no craziness here. But, if cemented, how could the lenses get mis-aligned?
--------------------
1956 Goto Optical 6" f15 Observatory Refractor
From the Titan Observatory as featured in S&T 1957-1959
&
1961 Nishimura 6" Reflector
|
mare233
member
Reged: 10/25/09
Posts: 15
|
|
Hi,
i never saw a cemented by kosmos, but you never know. Be carefully!
Quote:
But, if cemented, how could the lenses get mis-aligned
That was my first thought too.
Martin
|
AaronM
super member
Reged: 02/02/06
Posts: 340
Loc: NRW, Germany
|
|
?????
Hmmm thats curious Martin !
Every E68 I have seen has cemented objectives...I have never seen an E68 with metal foile spacers or distance rings.
Maybe you can photograph your lenses ?
Mit freundlichen Grüßen, Michael
picture shown below with friendly permission by Kosmos Stuttgart
|
mare233
member
Reged: 10/25/09
Posts: 15
|
|
Hi Michael,
you´re right! I have mixed id up with the d 61. I pull not often my lenses apart. My opinion is: never change a running system. Sorry for that mistake!
I have a photo from both lenses. On the left the e68 and on the right the d61 (not cemented and no marks)
But very strange that the marks on steve´s lens are not aligned.
CS Martin
|
Steve_M_M
scholastic sledgehammer
Reged: 06/09/04
Posts: 976
Loc: Moorpark, CA
|
|
Well, I made the part and then realized our Dec Assemblies are not the same....Interesting.
Mine...
--------------------
1956 Goto Optical 6" f15 Observatory Refractor
From the Titan Observatory as featured in S&T 1957-1959
&
1961 Nishimura 6" Reflector
|
Steve_M_M
scholastic sledgehammer
Reged: 06/09/04
Posts: 976
Loc: Moorpark, CA
|
|
Yours...Adjustment rod threads through lower plate and from the right.
--------------------
1956 Goto Optical 6" f15 Observatory Refractor
From the Titan Observatory as featured in S&T 1957-1959
&
1961 Nishimura 6" Reflector
|
mare233
member
Reged: 10/25/09
Posts: 15
|
|
Hi Steve,
yes i noted that, too. Another point why i think yours is a early from the fifties. The earliest scopes from the fifties only had a fine adjustment in Rec.
Another thing that often is missing and that i don´t saw on your photo, too, are the brass plates under the feets of the telescope.
But it took me years to find a complete refractor, so you are a lucky guy.
CS Martin
|
Steve_M_M
scholastic sledgehammer
Reged: 06/09/04
Posts: 976
Loc: Moorpark, CA
|
|
I took the telescope outside today to test it with my artificial star.
The telescope shows quite a lot of chromatic aberration for a 68mm f13.2 lens. Inside focus yielded nice rings with even distribution of light. Outside focus was a mush. Something is not right. Focus, even with the lens I rec'd was barely achievable at the end of the travel.
I pulled the lens out and noticed something down at the focuser end. I unscrewed the brass extensions and found this. It appears to be some kind of barlow lens that threads into the light path. If you look through the focuser with the lens in place the objective looks to be about 3mm wide rather than 68mm.
I pulled this little lens from the cell. It is a doublet concave lens. It will thread in from the front or rear of the extension piece. It could also be a field flattener, but I doubt it for this time period.
Does anyone know the purpose of this or the proper placement??
Thanks!
--------------------
1956 Goto Optical 6" f15 Observatory Refractor
From the Titan Observatory as featured in S&T 1957-1959
&
1961 Nishimura 6" Reflector
|
Steve_M_M
scholastic sledgehammer
Reged: 06/09/04
Posts: 976
Loc: Moorpark, CA
|
|
Removed.
--------------------
1956 Goto Optical 6" f15 Observatory Refractor
From the Titan Observatory as featured in S&T 1957-1959
&
1961 Nishimura 6" Reflector
|
Astrojensen
sage
Reged: 10/05/08
Posts: 219
Loc: Bornholm, Denmark
|
|
More importantly: Will the scope come to focus without it????
I've never heard of such a design used in a serious telescope for amateurs, only on some meant to be used as toys.
Clear skies!
Thomas, Denmark
|
Steve_M_M
scholastic sledgehammer
Reged: 06/09/04
Posts: 976
Loc: Moorpark, CA
|
|
This Kosmos telescope is actually turning out to be very Zeiss Like in construction. I am VERY impressed. This lens in the light path appears to be a barlow type lens very similar to what Zeiss offers.
The telescope comes to focus nicely in the middle of the focus range without the lens.
Steve
--------------------
1956 Goto Optical 6" f15 Observatory Refractor
From the Titan Observatory as featured in S&T 1957-1959
&
1961 Nishimura 6" Reflector
|
mare233
member
Reged: 10/25/09
Posts: 15
|
|
Hi Steve,
i never saw this (and there is nothing in the cataloges i have). Very interesting!
And i have no idea for what it was used. And I never heard from barlows in these times.
CS Martin
|
AaronM
super member
Reged: 02/02/06
Posts: 340
Loc: NRW, Germany
|
|
Hi Steve,
I agree with Martin & Thomas and I suppose, that this barlow-element was added later.
CS Michael
|
Steve_M_M
scholastic sledgehammer
Reged: 06/09/04
Posts: 976
Loc: Moorpark, CA
|
|
I just finished testing the unknown optical element. It is a 2x barlow of very good quality. In order to reach focus with a modern type mirror diagonal (Televue), it is necessary to have this piece in place of the telescope does not provide enough in travel on the focuser. Making a shorter ocular holder with alleviate this issue.
The pictures presented thus far show either straight thru or a turret diagonal using less travel. Somewhere along the past 60 years or so, someone must have acquired this piece which I am actually really happy to have. With a proper adapter, this little fellow should also allow the use of a diagonal in a Zeiss Asiola.
--------------------
1956 Goto Optical 6" f15 Observatory Refractor
From the Titan Observatory as featured in S&T 1957-1959
&
1961 Nishimura 6" Reflector
|
mustgobigger
Carpal Tunnel
Reged: 06/12/07
Posts: 2421
|
|
interesting steve,
i wonder if adding a unitron barlow to my 80mm unitron spotter would allow the same.
Brian
--------------------
RV-6
Meade 826
Meade 880 Deluxe
Unitron's 114,128,140,142,150,152,155,160
4" Jaegertron
4.5" A.E f/14 Refractor
4" f/15 Edmund's Refractor
|
Steve_M_M
scholastic sledgehammer
Reged: 06/09/04
Posts: 976
Loc: Moorpark, CA
|
|
Yes, it might. The Unitron spotter also has the advantage of having an actual ocular holder. I would suggest first trying as short a barlow as possible. This old Celestron version is not bad.
--------------------
1956 Goto Optical 6" f15 Observatory Refractor
From the Titan Observatory as featured in S&T 1957-1959
&
1961 Nishimura 6" Reflector
|
mustgobigger
Carpal Tunnel
Reged: 06/12/07
Posts: 2421
|
|
i do not have one of those.
looks like it would do the trick.
do they still sell those in .96
brian
--------------------
RV-6
Meade 826
Meade 880 Deluxe
Unitron's 114,128,140,142,150,152,155,160
4" Jaegertron
4.5" A.E f/14 Refractor
4" f/15 Edmund's Refractor
|
Previous
Index
Next
Threaded
Edit
Reply
Quote
[Re: 
