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Advice on a nice 80mm classic scope to look for "used".........

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#1 Grandpa Jim

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Posted 06 July 2018 - 10:00 AM

I started another post in "refractors" and was referred here.................

I'm looking for a nice "used" 80mm or 90mm refractor OTA that

I can use on a "Porta" style mount with my existing EP's (see signature).

 

Problem is...........I know nothing :(

 

Japanese made 80M Vixen seems a decent scope, but hard to find...........

(I have an "AstroMart" account, but it has been awhile, and I can't get help to get back into it).

 

Not looking for that rare "gem", just a *nice* scope for the $$$$............

 

"Grandpa Jim" - Jim J.



#2 Gary Z

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Posted 06 July 2018 - 10:30 AM

check on the refractor page and scroll down, and you'll see some nicely priced scopes. 

 

https://www.cloudyni...sort_order=desc

 

Starting with the 80mm astro-tech refractor, astro-tech AT72EDII, the AT Quad-65mm, and the 90mm WO.

 

I realize not all there are 80-90mm but you have a nice selection to choose from just on that page.  A friend of mine has the new AT72EDII scope and it is built well.  I have the older version of this little scope. 

 

Not sure what your budget is but you can also find Stellarvue refractors in this similar range (doublet).

 

Gary



#3 Bomber Bob

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Posted 06 July 2018 - 10:40 AM

Here's an 80mm Classic upgraded with a WO focuser for < $200:  https://www.cloudyni...l-wo-2-focuser/


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#4 terraclarke

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Posted 06 July 2018 - 10:45 AM

C80 or Firstscope 80! Vixen/Japan of course.


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#5 terraclarke

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Posted 06 July 2018 - 10:48 AM

Here:

 

https://losangeles.c...6634619243.html


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#6 Jon Isaacs

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Posted 06 July 2018 - 11:25 AM

C80 or Firstscope 80! Vixen/Japan of course.

 

Another alternative is a Meade 310/320. These are also an 80 mm F/11, made in Japan by Mizar. 

Edit:  These were manufactured in the 1980s.

 

Jon

Meade 310 2018 -1.jpg

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#7 KevinFH

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Posted 06 July 2018 - 11:31 AM

I started another post in "refractors" and was referred here.................

I'm looking for a nice "used" 80mm or 90mm refractor OTA that

I can use on a "Porta" style mount with my existing EP's (see signature).

 

Problem is...........I know nothing frown.gif

 

Japanese made 80M Vixen seems a decent scope, but hard to find...........

(I have an "AstroMart" account, but it has been awhile, and I can't get help to get back into it).

 

Not looking for that rare "gem", just a *nice* scope for the $$$$............

 

"Grandpa Jim" - Jim J.

I'm too new to recommend, but I just bought (on CN classifieds) the Orion ED80T CF used with a field flattener and I think it was a good choice at a good price.


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#8 Joe1950

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Posted 06 July 2018 - 11:43 AM

Never had a better scope than the Celestron C80ED, especially optically. Easy to mount and move. Very reasonable used around $300. Great images and NO chromatic aberration visible.

 

DPAC with 150 LPI Ronchi screen:

 

DPAC C80.jpg

 

My opinion from use of the scope. Focuser is good R&P, but I changed it to a 2x speed GSO Crayford.

 

IMG_9302.JPG

 

 

Good luck and whatever you find, ENJOY!


Edited by Joe1950, 06 July 2018 - 11:44 AM.

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#9 bobzeq25

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Posted 06 July 2018 - 11:56 AM

The above is a "modern classic".  The 80mm F7.5 FPL-53 doublet turned out to be a superb lens.  Unusually good color correction for a doublet.  A number of manufacturers used it, one still makes scopes with it.  If you find an 80mm F7.5 scope (shouldn't be hard), it probably uses that lens, I know of no other with that specification.

 

If no one has gotten there first, you will have the pleasure of taking the focuser apart, cleaning it, and putting grease in there that doesn't stick.

 

Yeah, I own one.  <grin>


Edited by bobzeq25, 06 July 2018 - 11:59 AM.

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#10 Grandpa Jim

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Posted 06 July 2018 - 12:22 PM

Here's an 80mm Classic upgraded with a WO focuser for < $200:  https://www.cloudyni...l-wo-2-focuser/

Excellent suggestion, but never having had to deal with this - how does one put a dovetail on it?



#11 Astro-Master

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Posted 06 July 2018 - 12:29 PM

The focusers on most telescopes from  China are one of the weak spots, the other is fair to poor optics.  You never know what you will get.  A used Stellarvue on the other hand is a hand made scope with a good focuser and good optics.  It will keep it's resale value better than China made scopes, and give you years of enjoyment.

     I have owned a Stellarvue 105mm for years.  It is a pleasure to use, and on nights of good seeing I've used 500x on the moon and double stars.



#12 Grandpa Jim

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Posted 06 July 2018 - 12:35 PM

The focusers on most telescopes from  China are one of the weak spots, the other is fair to poor optics.  You never know what you will get.  A used Stellarvue on the other hand is a hand made scope with a good focuser and good optics.  It will keep it's resale value better than China made scopes, and give you years of enjoyment.

     I have owned a Stellarvue 105mm for years.  It is a pleasure to use, and on nights of good seeing I've used 500x on the moon and double stars.

Nice scopes yes, but a bit outside my budget..........



#13 Kasmos

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Posted 06 July 2018 - 12:39 PM

I had a feeling it was. As mentioned earlier the Celestron C80s (Vixen) show up fairly often and won't break your piggy bank.



#14 Grandpa Jim

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Posted 06 July 2018 - 01:15 PM

I had a feeling it was. As mentioned earlier the Celestron C80s (Vixen) show up fairly often and won't break your piggy bank.

This is kind of looking like the way for me to go............*if* I go - just

debating at this point.


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#15 shredder1656

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Posted 06 July 2018 - 01:52 PM

Did you mean to leave our convo?  NO problem, if you did, but I wanted to make sure you knew I answered you.



#16 jallbery

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Posted 06 July 2018 - 03:23 PM

Excellent suggestion, but never having had to deal with this - how does one put a dovetail on it?

You need a clamshell or a set of rings.  For example

https://www.telescop...s?ensembleId=39

 

You'll need to know the outer diameter of the telescope tube to select the right rings. 

 

The dovetail then attaches to the rings.

 

FWIW,  I bought a used Orion 90mm F/11.1 and mount (the older version with the black (not white) tube and substantially better mount) off of ebay for like $150 shipped.   I was mainly buying it for the mount (which was pretty much worth the purchase cost alone), and was pleasantly surprised by the optical quality.  Not a real classic, but a pretty good approximation.



#17 rcwolpert

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Posted 06 July 2018 - 04:57 PM

The real problem is that there are SO MANY really excellent 80mm classic scopes! You buy one and soon you’ll be having 20 of them in your house! Be careful . . . Be VERY careful.Telescope.gif


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#18 Bomber Bob

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Posted 06 July 2018 - 06:16 PM

Most of the Sears branded 76mm refractors use the Orion 80mm hinged rings.


Edited by Bomber Bob, 06 July 2018 - 06:17 PM.


#19 CHASLX200

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Posted 06 July 2018 - 06:18 PM

Another alternative is a Meade 310/320. These are also an 80 mm F/11, made in Japan by Mizar. 

 

Jon

I loved mine, but the mount broke a few months later after i got it.



#20 Augustus

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Posted 06 July 2018 - 09:50 PM

Another alternative is a Meade 310/320. These are also an 80 mm F/11, made in Japan by Mizar. 

 

Jon

I have the same scope but it's called the 312... very good performer!


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#21 Jon Isaacs

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Posted 06 July 2018 - 10:34 PM

The focusers on most telescopes from  China are one of the weak spots, the other is fair to poor optics.  You never know what you will get.  A used Stellarvue on the other hand is a hand made scope with a good focuser and good optics.  It will keep it's resale value better than China made scopes, and give you years of enjoyment.

     I have owned a Stellarvue 105mm for years.  It is a pleasure to use, and on nights of good seeing I've used 500x on the moon and double stars.

 

Most StellarVue refractors are manufactured in China by the very same manufactuers that supply Orion,  William Optics , Astro-Tech and various other end sellers.

 

As Joe has documented , his C80ED was made in China and has excellent optics.  My William Optics Megrez II FD is an 80 mm F/7 FPL-53 doublet with an excellent build and very good optics.  I've had it since about 2005.. It was made in China .

 

Jon



#22 deSitter

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Posted 07 July 2018 - 04:06 AM

I like the Meade 90mm refractors. I liked one so much it became one of my main telescopes. f/10-11 ideal focal length. Good for planets, good for doubles, good for wide fields, easy to deal with, inexpensive, no down sides.

 

-drl



#23 Bob S

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Posted 07 July 2018 - 07:28 AM

I have the Celestron C80ED on a Porta mount. It's a great combination, easy to move and with terrific optics. I got the telescope when Celestron was phasing them out for a song. I've tried a C100ED on the Porta and an 80mm f/15, both were too much for the mount. An 80mm f/11 would be better, but the f/7.5 apochromatic is just about perfect for this mount.



#24 nashvillebill

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Posted 07 July 2018 - 08:23 AM

If the OP was in Phoenix, I've got a Celestron/Synta 80mm I'd practically give him (her)....



#25 grif 678

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Posted 07 July 2018 - 08:29 AM

I certainly agree with Terra, a good used Vixen sourced Celestron C-80 is the one. These come up pretty regularly on CN for around $125 for the OTA. For the money, you can not beat it. Not the newer China made ones, but the originals from the 80's and 90's, you can not go wrong with this one.


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