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#251 Nippon

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Posted 05 December 2020 - 10:14 AM

Vixen ED103s

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#252 stevety

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Posted 05 December 2020 - 10:39 AM

orion eon 130mm triplet refractor

 

 

 

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Edited by stevety, 05 December 2020 - 10:42 AM.

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#253 LukaszLu

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Posted 05 December 2020 - 12:58 PM

Vintage Eschenbach Novalux 415 - before/during/after cleaning and removing fungus

 

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#254 mitsos68

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Posted 08 December 2020 - 10:50 AM

My 8 inch f/9 glass, deep in the focuser the Chromacor II O1 performs nicely.

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#255 Tyson M

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Posted 08 December 2020 - 03:43 PM

A recent small project of mine nearing completion- estimated time of completion end of January

 

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#256 bacon

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Posted 21 January 2021 - 11:55 PM

I've always wanted to post here.  AT102EDL SN00010!

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#257 mmalik

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Posted 22 January 2021 - 05:58 AM

Click for details...

 

 

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#258 StarDust1

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Posted 22 January 2021 - 07:06 AM

Love these fluorite doublets!
 
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Edited by StarDust1, 22 January 2021 - 07:09 AM.

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#259 mmalik

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Posted 22 January 2021 - 08:19 PM

Click for details...

 

 

 

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#260 LukaszLu

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Posted 01 February 2021 - 11:40 AM

Royal Astro R-74

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#261 rkelley8493

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Posted 01 February 2021 - 04:10 PM

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#262 mmalik

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Posted 02 February 2021 - 04:49 AM

Click for details...

 

 

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#263 duck2k

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Posted 02 February 2021 - 12:27 PM

Mine.

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#264 CltFlyboy

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Posted 02 February 2021 - 12:50 PM

Here's my new to me 6" f/5 objective. This is the one recently sold on eBay. It's in excellent shape and is very clear, pardon the crappy photo. Now I have to source the tube and focuser - it's going to be a treat.

 

 

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#265 j.gardavsky

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Posted 02 February 2021 - 02:18 PM

Here's my new to me 6" f/5 objective. This is the one recently sold on eBay. It's in excellent shape and is very clear, pardon the crappy photo. Now I have to source the tube and focuser - it's going to be a treat.

Hello Henry,

 

this glass smells to me and it looks to me like a triplet, so it should be an air-spaced triplet.

How do you find and pick up the 6" F/5 triplets?

 

Congrats on your glass,

JG


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#266 CltFlyboy

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Posted 02 February 2021 - 02:47 PM

Hello Henry,

 

this glass smells to me and it looks to me like a triplet, so it should be an air-spaced triplet.

How do you find and pick up the 6" F/5 triplets?

 

Congrats on your glass,

JG

Thanks JG! From what I can see without taking the glass out of the cell is only a single layer of air spacers, so I'm thinking doublet. I found it on eBay by chance; someone was parting out a brass scope that looked identical to an old Cheshire. I'm pretty sure that they had no clue as to what they had. It's a tragedy that the scope got dismantled in the first place, but at least I ended up with a great objective that I will take care of, use, and love.



#267 j.gardavsky

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Posted 02 February 2021 - 04:12 PM

Hello Henry,

 

what is looking like 6 shim plates, has been the reason to guess it might be a triplet.

But even a doublet is a great find!

 

Best,

JG


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#268 3 i Guy

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Posted 02 February 2021 - 10:37 PM

Just celebrated 10 years with No. 494. It’s the best Astro $ I’ve ever spent and now that I live under bortle 2.5 skies, I love it even more!

 

Thank you Yuri

 

 

Mark

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#269 Hax

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Posted 04 February 2021 - 06:24 PM

Here’s one of my ES 127, FCD100 series, delivers fantastic views!

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#270 GoodAsh

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Posted 20 February 2021 - 06:49 PM

Newton rings in my Orion by Vixen 80mm achro. Love seeing these perfectly aligned as evidenced by the great image this scope puts up!

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#271 lionel

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Posted 20 February 2021 - 11:58 PM

Glass....what glass?

 

Lionel

 

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#272 Reid W

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Posted 22 February 2021 - 10:29 PM

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#273 drprovi57

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Posted Yesterday, 07:42 AM

Some BIG GLASS:  My CFF Telescope 200mm F6.5 - number 01 of its kind...

 

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#274 Rutilus

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Posted Yesterday, 08:04 AM

One of my all time favourite lenses, U.S.S.R. built 60mm f/4.5 Achromat. I've just posted a finder/spotter scope build

with this lens in the ATM forum.  A long with some more information about these wonderful little lenses.

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