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Craigslist, ebay and other Vintage Telescope Finds

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#6401 Bomber Bob

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Posted 17 November 2018 - 06:00 PM

Vixen 36mm Extension Tubes

 

Here's how I'm using those Vixen 36mm extension tubes with my Sears Model 6336:

 

Sears 6336 with Vixen 36mm to 32mm Tubes S02.jpg

 

Remove the 30mm chrome manual / coarse focus tube;  unscrew the knurled ring from the larger rack & pinion tube; thread in the Vixen tube(s) as needed; then thread in the standard Vixen 36mm to 1.25" accessory adapter.  I'll probably find out tonight that 3 are too much.

 

These tubes should fit all Royal Astro refractors that have the two-tube focusers; they should also work with the Towa Models 305 & 339 -- and their re-branded versions.


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#6402 deepwoods1

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Posted 17 November 2018 - 07:42 PM

Hope it works! I have one sitting around somewhere and could put it to use. Well, it would be added to the rather large list of things to do.....


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#6403 Esso2112

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Posted 19 November 2018 - 08:57 PM

Added three B&L ASP eyepieces to my collection. A 12.7, 18, and 30mm. Circle Y. They are N.O.S. And are absolutely mint. Will be curious how they perform. Not really expecting anything amazing from them, but they are pretty and very shiny. 


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#6404 Augustus

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Posted 19 November 2018 - 08:59 PM

Got my orange C90 Astro today. Tested it indoors, slightly out of collimation but very sharp images nonetheless. Scope is in great shape. Will post pics soon.
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#6405 rolo

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Posted 20 November 2018 - 02:41 PM

Got another therapy scope...debating wether or not to post about it...


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#6406 wfj

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Posted 20 November 2018 - 03:26 PM

Got another therapy scope...debating wether or not to post about it...

Perhaps a post/thread on what makes for a good therapy scope? Don't even have to mention/show ... a scope. How's that for you?


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#6407 terraclarke

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Posted 20 November 2018 - 05:13 PM

Got another therapy scope...debating wether or not to post about it...


Go for it my Friend! Break the monotony!!

Edited by terraclarke, 20 November 2018 - 06:54 PM.

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#6408 BigC

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Posted 20 November 2018 - 08:00 PM

 Unpacked a Swift Aerolite 60/800 as el last night. Looks very well made.Surprised by tag statin 5 year warranty. As I remember most companies in the 1960s had rather short warranties.


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#6409 rolo

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Posted 20 November 2018 - 08:09 PM

Go for it my Friend! Break the monotony!!

Probably tomorrow... You hired a model for your avatar?waytogo.gif


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#6410 terraclarke

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Posted 20 November 2018 - 11:09 PM

Probably tomorrow... You hired a model for your avatar?waytogo.gif


Nope, just little old self employed me! wink.gif
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#6411 Bomber Bob

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Posted 21 November 2018 - 09:53 AM

Mizar AR-1 vs Bushnell Banner Mounts:

 

Mizar AR-1 GEM S03.jpg Bushnell Banner 1000 GEM S02.jpg

 

Way back 30-odd years ago, when my D&G 5" F10 ruled the skies, I bought a brand new Bushnell Banner 1000 80mm F12 EQ refractor kit.  It looked sharp, and the battery-powered Quartz Drive was advertised as highly accurate, and with my Tasco 80 gone, I needed a grab & go kit.  The 1000 gave decent views (the eyepieces had the same look & quality as those bundled with the Pentax "J Series" fracs), but what really impressed me was the mount & tripod -- about as light as the 1978 Tasco's, but with much more accurate tracking.

 

Thinking back on the 1000, I pounced on Marc's ad for a Mizar AR-1 EQ, convinced that it was "just like" the old 1000.  It's not -- shows how bad my memory is!  While both are Hino/Mizar products from roughly the same period, I see some improvements:  Metal axis lock levers vs. plastic (I had one crack on the 1000 -- fixed with Krazy Glue!); metal knobs for setting latitude & azimuth;  and, best of all for my purposes, a less proprietary polar drive assembly.  Like the Vixen Polaris, the AR-1 has a pre-tapped hole at about the right distance from a slo-mo shaft to attach a cheap 9V AstroMaster-type drive -- the same ones I use successfully on both my Polaris mounts.

 

Who says you can't go home again?  Shoot!  But this time, it'll be either a 1960s Swift 838, 1984 Takahashi FC-50, or 1980s Pentax J-60 riding on a Mizar mount.


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#6412 terraclarke

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Posted 21 November 2018 - 10:04 AM

Back around 2000 Stellarvue used to market those mounts with their scopes. I remember they could be pared with a lovely American-made apple-wood tripod. They are nice mounts.


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#6413 Bomber Bob

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Posted 21 November 2018 - 10:54 AM

Terra, you were right:  I will need some kind of finder on the dinky FC-50, as it's more than just a finder for my 152, or RFT companion for my 4" & 5" F5s...

 

Would a LASER pointer on it look tacky (like a NASCAR sticker on an 1875 Clark)??


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#6414 CCD-Freak

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Posted 21 November 2018 - 01:47 PM

Mizar AR-1 vs Bushnell Banner Mounts:

 

attachicon.gif Mizar AR-1 GEM S03.jpgattachicon.gif Bushnell Banner 1000 GEM S02.jpg

 

Way back 30-odd years ago, when my D&G 5" F10 ruled the skies, I bought a brand new Bushnell Banner 1000 80mm F12 EQ refractor kit.  It looked sharp, and the battery-powered Quartz Drive was advertised as highly accurate, and with my Tasco 80 gone, I needed a grab & go kit.  The 1000 gave decent views (the eyepieces had the same look & quality as those bundled with the Pentax "J Series" fracs), but what really impressed me was the mount & tripod -- about as light as the 1978 Tasco's, but with much more accurate tracking.

 

Thinking back on the 1000, I pounced on Marc's ad for a Mizar AR-1 EQ, convinced that it was "just like" the old 1000.  It's not -- shows how bad my memory is!  While both are Hino/Mizar products from roughly the same period, I see some improvements:  Metal axis lock levers vs. plastic (I had one crack on the 1000 -- fixed with Krazy Glue!); metal knobs for setting latitude & azimuth;  and, best of all for my purposes, a less proprietary polar drive assembly.  Like the Vixen Polaris, the AR-1 has a pre-tapped hole at about the right distance from a slo-mo shaft to attach a cheap 9V AstroMaster-type drive -- the same ones I use successfully on both my Polaris mounts.

 

Who says you can't go home again?  Shoot!  But this time, it'll be either a 1960s Swift 838, 1984 Takahashi FC-50, or 1980s Pentax J-60 riding on a Mizar mount.

I got lucky and picked up one of the early Mizar mounts about 10 years ago.  It is nice for grab and go.  It is now on a nice wooden tripod.

 

Mizar Mt-2-sm.JPG

 

 

John Love

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#6415 roscoe

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Posted 21 November 2018 - 02:20 PM

Yeah, the earlier Mizar's are decent visual mounts for the 3" and under class.... I've had a couple of them, both being replaced with Polaris mounts, but both being just fine as they were.  As with most all mounts, better tripods doubled their performance.....

 

So in other news, when it rains, it pours!!  I finally had time yesterday to drive down and pick up my 60 x900 Unitron, with the almost-complete Unihex (needs a 1.25 EP tube), and when I got home,  a CN and Stellafane acquaintance sent an email offering me for free a working 6" Super Space Conquerer !!  I had snagged a very 'needs work' RV-6, which was truly on the fence of restore or part out, and..... that problem is solved, rather have a working scope than a work-on one!!

 

With my current run, I'll be expecting my $25 Questar to be showing up soon!!!!!


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#6416 Geo31

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Posted 21 November 2018 - 03:23 PM

What kind of work does the RV-6 need Russ?  Certainly not asking for me.  Just curious.



#6417 Vesper818

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Posted 21 November 2018 - 03:32 PM

Terra, you were right: I will need some kind of finder on the dinky FC-50,...

Would a LASER pointer on it look tacky (like a NASCAR sticker on an 1875 Clark)??

How about using the brackets and tube from one of the old 24mm classic finders,painted to match that little beauty? Drill a hole in the finder tube for the switch, stuff the laser (with a little padding, or o rings)in, to disguise it??
I think too much.
JW, I'm following your explorations with that little Tak. My scopes are not much bigger, but all acromats, and even they are getting difficult to handle. How much does the 50mm weigh? In a few monthes, A small apo is in my sights, to make the best of a small thing....

#6418 roscoe

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Posted 22 November 2018 - 08:03 PM

What kind of work does the RV-6 need Russ?  Certainly not asking for me.  Just curious.

It's battered..... it spent a bunch of time in a very wet place, one of the feet is about corroded right away, the mount, while it still works, is very rusty, and has a very bad paint job, the finder's gone, the tube has lots of cracks in the finish and several scuffs and scrapes, and a dent you could perfectly fit half a golf ball into, the top and bottom edges are somewhat shredded,  the mirrors badly need a recoat, .....but the focuser still works.

 

It turns out that the mirrors in the RV-6 and the Space Conquerer are the same, so I'll get both tested, and put the best in the Space Conquerer, same with cell and secondary/spider, and part out the rest.  The mount, I'll keep around.


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#6419 Geo31

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Posted 22 November 2018 - 09:19 PM

It's battered..... it spent a bunch of time in a very wet place, one of the feet is about corroded right away, the mount, while it still works, is very rusty, and has a very bad paint job, the finder's gone, the tube has lots of cracks in the finish and several scuffs and scrapes, and a dent you could perfectly fit half a golf ball into, the top and bottom edges are somewhat shredded,  the mirrors badly need a recoat, .....but the focuser still works.

 

It turns out that the mirrors in the RV-6 and the Space Conquerer are the same, so I'll get both tested, and put the best in the Space Conquerer, same with cell and secondary/spider, and part out the rest.  The mount, I'll keep around.

Oh man.  Sounds like what I started out with.  LOL.  I don't exactly recommend what I did to anybody.  It's cool you can bring the Space Conqueror on-line easily.



#6420 rolo

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Posted 22 November 2018 - 10:01 PM

I found a classic C9.25 on a CG5 with Sky Sky Sensor 2000PC...


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#6421 Bomber Bob

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Posted 23 November 2018 - 11:30 AM

How much does the 50mm weigh?

 

The bare OTA is about 4 pounds -- feels heavier because it's so compact.  The TAK cradle weighs at least half as much, so maybe 7 pounds ready to attach to a mount...


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#6422 terraclarke

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Posted 23 November 2018 - 12:27 PM

How much does the 50mm weigh?

 

The bare OTA is about 4 pounds -- feels heavier because it's so compact.  The TAK cradle weighs at least half as much, so maybe 7 pounds ready to attach to a mount...

 

It is basically the identical OTA to the FC60, just about two inches shorter.

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#6423 DMala

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Posted 23 November 2018 - 06:25 PM

https://www.cloudyni...-ads/?p=8955752

 

 

Well  thanks to BB's post above I am getting the Edmunds 8" F5 Newtonian, as I think it would be a good candidate for my initial efforts to integrate classics with night vision. Faster and more modern scopes may even be better for night vision but I want to stick to classics and to avoid the more challenging collimation requirements of ultrafast scopes. It also comes all set up with rings and dovetail, which is a plus in terms of convenience. I am also getting as individual parts the original finder+hardware, and the heavy original focuser with guiding eyepiece holder, not a common part from what I understand.

 

Question: for the shipping, should I have the mirror packed by itself, or packed while inside the mirror cell? OTA and all hardware will go in a separate box than the mirror.  Thx


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#6424 punk35

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Posted 23 November 2018 - 07:26 PM

A vintage C5 for $100 bucks!

 

https://www.facebook...5681139582990/ 



#6425 Bomber Bob

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Posted 24 November 2018 - 10:25 AM

BIF:  Mizar AR-1 vs Vixen Polaris

 

Seems like I recall a post where Polaris owners bored-out the threads in their counterweights; then, either drilled & tapped a set-screw hole, or used nuts & washers to lock the weight in place.

 

How did that turn out?

 

The threaded shaft makes sense if you use just one scope on the mount (as designed / originally sold), and turning the weight up/down the shaft is minimal.  But this redneck swaps scopes often, and the adjustments are huge -- and tiresome.  I'm not blaming the mount for working as intended, but my idea was have just a few multi-scope mounts in the shed -- clear the forest...


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