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1976 Edscorp 4" f/15 with Manual

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#1 kaymann

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Posted 09 October 2017 - 11:16 PM

First and only owner since 1976

 

Edscorp, Barrington New Jersey no. 85,038  Air-Spaced (foil spacers) 4" Achromat 60" Focal Length (f/15) First Crown/Second Flint Objective

With manual dated 5/74

Edscorp no. 85,034 Equatorial Mount with Oak tripod legs.

With manual dated 5/74

Edscorp no. 40,477 Barlow

With manual dated 5/72

Edscorp Lens:

  25mm Kelner

  1/2" Ramsden

  1/4" Ramsden

 

 

How to use YOUR TELESCOPE no. 9055,  Copyright 1972

TIME in Astronomy no. 9054,  Copyright 1966 

 

Really so much fun to dig these out of the closet again.

Going to try the scope out on the CGE mount soon!

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Edited by kaymann, 09 October 2017 - 11:26 PM.

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#2 terraclarke

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Posted 10 October 2017 - 06:22 AM

They are wonderful telescopes for sure! The 1/2" and 1/4" Ramsden eyepieces are a bit of kit that is best kept in the box as memorabilia. They are as bad as the scope is good.


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#3 kaymann

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Posted 10 October 2017 - 07:27 AM

I am not sure why I kept them and you are right they look brand new in the box for lack of use :-)


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#4 terraclarke

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Posted 10 October 2017 - 07:28 AM

They are nice reminders that 'the good old days' weren't always that good!


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#5 clamchip

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Posted 10 October 2017 - 09:34 AM

Very nice!

The Edmund 4 inch f/15 equatorial is my favorite telescope of all time.

I try other scopes but I always love my Edmund the most.

I bought my first one in the 1970's, a used one. The love started though

in the late 60's with the Edmund catalog picture of the beauty. I knew

from the catalog that was the telescope for me.

 

Robert 


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#6 kaymann

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Posted 10 October 2017 - 11:19 AM

The instruction manual is as classic as the catalog. I find it interesting that the print material looks so much more dated than the 70's. No matter I was obviously taken the minute I saw it in the catalog. I am going to go through the how to and time in booklets to check their accuracy by today's standards.

#7 Joe Cepleur

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Posted 10 October 2017 - 11:33 AM

Wow! The ultimate find, in your own closet! When did you last use it?
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#8 kaymann

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Posted 10 October 2017 - 12:56 PM

Joe, Every time I take out a scope it was my 1981 8" Meade Model 2080 SCT with motorized RA Only (No GoTo in 1981). It is on a Equatorial Wedge with extremely steady factory tripod. Nothing on the Meade mount would have helped the Edscorp. The tripod for the Edscorp was a little more "primative" than I could handle.

 

I recently purchased a CGE mount from a friend but now I up against Celestron discontinuing the distribution of the motors and the supplier (Pittman) is refusing to sell to anyone else. So I am looking for another mount and my friend reminded me I still had the Edscoorp and ensure whatever I got could handle it. I started looking for it and there in the back of the guest room closet is my little (Big) gem with manuals/booklets and oak lens case with the all the lens provided by Edscorp... Last observed through in... ... ... 1990's  So sad. The glass looks perfect and I can't wait to get a mount that can handle it and take it out again...


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#9 Bomber Bob

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Posted 10 October 2017 - 04:01 PM

The Edmund 4 inch f/15 equatorial is my favorite telescope of all time.

 

Same here.  It never disappoints.  Mine's about 60 years old, but after the powder coat, it shines like a new penny.

 

[Gratuitous Edmund 4" F15 refractor photo.]

 

Edmund 4 - OTA Done (Mounted) S06.jpg


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#10 Joe Cepleur

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Posted 11 October 2017 - 12:08 PM

Kaymann, it sounds as though you have the original Edscorp mount. Perhaps a friend could help you assemble and align it? Do you belong to an astronomy club? Any of the astronomers in my club would be over in a minute to help you, if only we were nearby. We're in Maine.

Edited by Joe Cepleur, 11 October 2017 - 12:08 PM.

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#11 terraclarke

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Posted 11 October 2017 - 12:19 PM

I know I love my 4" Edmund F15!

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#12 bremms

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Posted 12 October 2017 - 12:23 PM

They need a modern 2" focuser. The foot long 1.25" ID tube with a diagonal nearly vignettes the center of field. It's a much more versatile scope with a proper 2" focuser. Poor design in my book.


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#13 rolo

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Posted 12 October 2017 - 05:49 PM

I wasn't impressed with the one I had. Paper baffles, not collimateable and poor focuser really dissapointed me.


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#14 terraclarke

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Posted 13 October 2017 - 08:59 AM

I will just say this.  I sold my Unitron model 152 (4", F15 with equatorial mount) and I kept my Edmund 4" F15, and it wasn't even a hard decision. The Edmund had sharper optics, snapped to focus better, and is three times easier to set up and take down! I will not let this one go as long as I am able to use it, and hopefully, that will be a very long time.


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#15 clamchip

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Posted 13 October 2017 - 09:49 AM

I did the same.

Back in the 1970's I bought a Unitron 3 inch to compare to my Edmund hoping I could have a easier

to transport scope with my VW bug. There was no comparison, sold the Unitron struggled with daddy long

legs Edmund.

Again recently, sold my Unitron multi-coated 4 inch kept the Edmund.

 

Robert


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#16 diglit

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Posted 13 October 2017 - 09:50 AM

Wonderful scope.

Really a good shot!

 

Paolo



#17 terraclarke

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Posted 13 October 2017 - 09:50 AM

The Edmund 4" objective lenses are unstoppable! :yay:


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#18 rolo

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Posted 13 October 2017 - 05:58 PM

The one I had did have  excellent optics , it was the build quality I was dissapointed with.


Edited by rolo, 13 October 2017 - 05:59 PM.

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#19 kaymann

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Posted 13 October 2017 - 07:26 PM

Joe,

 

I do have the original and it is adjusted to the proper latitude and when placed in it's proper location aligned celestial north.

Being a long focal refractor it is easy to align with bright objects and star hop but the original setting circles on that mount are approximate at best.

I would just like to get it going on a nice GoTo mount.



#20 bremms

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Posted 13 October 2017 - 09:12 PM

I will just say this.  I sold my Unitron model 152 (4", F15 with equatorial mount) and I kept my Edmund 4" F15, and it wasn't even a hard decision. The Edmund had sharper optics, snapped to focus better, and is three times easier to set up and take down! I will not let this one go as long as I am able to use it, and hopefully, that will be a very long time.

The red tube versions have the Rank designed lens made in USA. They are some of the best achromats you will find. Toyed for a year with getting the 5" F15 lens before the 6" F10 Jaegers.



#21 clamchip

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Posted 13 October 2017 - 10:46 PM

I built a telescope for a Edmund 5 inch f/15 lens, its everything you ever dreamed for.

Here it is on a Edmund Extra Heavy Duty mount. (top photo)

And a photo of my equally wonderful Edmund 4 inch on a Unistar mount and Losmandy tripod.

Robert

 

post-50896-0-78775400-1471157064.jpg

post-50896-0-28710700-1470762770.jpg


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#22 mustgobigger

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Posted 14 October 2017 - 01:23 AM

i have owned 3 of these.....wish i woulda kept one, for the money they cant be beat.


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#23 terraclarke

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Posted 14 October 2017 - 08:15 AM

i have owned 3 of these.....wish i woulda kept one, for the money they cant be beat.

 

I'm eternally grateful for the one you sold me Brian! The military spec objective lens is superb!

 

https://www.cloudyni...ke-a-good-look/


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#24 kaymann

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Posted 15 October 2017 - 04:03 PM

Here is the mount and scope married again after a couple of decades.

 

The original grey vinyl/belt buckle holding straps stretched and became useless very early on.

They were replaced with a couple double D cotton athletic belts.

The best a high school student could come up :-)

I could barely afford the telescope and mount, from my profits delivering newspapers on a bicycle! 

Wow I do need to come up with something else now!

 

The only lens cap I could afford was the lid from a coffee canister...

 

My dad was pretty good at wood working and varnished the wood

Do I remember correctly it came unvarnished?

 

The grey cast iron mount is stamped "B-2088 Edmond Scientific Barrington NJ"

The setting circles are marked ©1958 Edmond Scientific Co., Barrington New Jersey"

On a sad note the grey plastic Dec circle is cracked chip in a big way during one of many many moves...

 

BTW the other scope is a K-Mart scope given to me for Christmas ~1972 and got the whole astronomy thing rolling...

 

20171015-s.jpg

 

 

 


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#25 Joe Cepleur

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Posted 15 October 2017 - 04:54 PM

Perfect! The coffee can lids and cotton straps only enhance the scope's provenience as a one-owner, resurrected classic. Try it on any mount you like; buy rings of you want; but, as is, you are ready to roll into your astronomic future! (Or, sell it to me, if you *really* hate those straps!)
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