650 replies to this topic

[RichA]

Many scopes, accessories, etc listed in Scarsdale NY Online Auction, starting to close Fri, Jul 12, 2024 at 8:00 PM EDT.

 

Examples:

 

10" Meade Ultra High Contrast SCT

 

Mayflower Model 814 D-60mm F-700mm Altaz & Wood Case

 

76mm 3" Diameter (Surplus Shed) Mak Lens Set (silvered spot meniscus and primary)

 

Barium Sulphate Coated 10" primary & 3 1/2" X 2 1/2" Oval diagonal (curvature not listed)

 

Oberwerk 15x70 Fully Multi Coated BAK-PRISMS Binoculars

 

and other cra... er, treasures.

Why would they used barium sulfate?  It reflects about 98% of the light, but I wasn't aware it was silver in colour, I though it was white?  Good for UV, apparently.

[RichA]

I saw one of those here in another thread.

So very cool. 

Then I saw the price. That took the wind out of my sails.

I no clue if it is a good price, just not for me.

Should be $100.00.

[ccwemyss]

6" Dynascope with three original eyepieces and sales literature. A bit rusty and dusty. $90. Near Albany, NY.

 

https://albany.craig...7763276207.html

 

Chip W. 

[deSitter]

Why would they used barium sulfate?  It reflects about 98% of the light, but I wasn't aware it was silver in colour, I though it was white?  Good for UV, apparently.

Very even and high reflectance curve for IR to visual to UV applications. No idea about blooming or any of that, which is important for reflective coatings. Basically paint I have no idea how paint becomes a mirror coating

 

-drl

[Kasmos]

 

Haven't seen this re-brand before...   Circa ~ 1958 Scanex (T) 60x800 AZ Kit w/ Wood Cabinet:   https://www.ebay.com...oNSQZA&LH_BIN=1

 

$150 OBO + shipping.

Interesting for  a couple of reasons.

1. Not many of these old Towas (other than Selsi) had that mount. 

2. That might be the only example we seen so far of a old 60/800mm Towa that has a engraved focuser featuring a Circle T.

Edited by Kasmos, 06 July 2024 - 04:39 AM.

[Senex Bibax]

Why would they used barium sulfate?  It reflects about 98% of the light, but I wasn't aware it was silver in colour, I though it was white?  Good for UV, apparently.

Left over from a GI tract exam? My only encounter with BaSO4 was drinking a cupful of chalky, heavy liquid.

[Paul Hyndman]

Why would they used barium sulfate?  It reflects about 98% of the light, but I wasn't aware it was silver in colour, I though it was white?  Good for UV, apparently.

Maybe someone  misunderstand and listed as "barium sulfate" instead of "beral" or "beryllium" (brain faht from a would be techie wonk)?

[reverse_syzygy]

Interesting for  a couple of reasons.

1. Not many of these old Towas (other than Selsi) had that mount. 

...

I have to put up photos of my Orbit 2253 for you folks to look at. 

I can't find any real info on it, but various parts look the same as various other scopes.

(that Scanex looks like same mount and legs to my untrained eyes)
 

[deSitter]

Maybe someone  misunderstand and listed as "barium sulfate" instead of "beral" or "beryllium" (brain faht from a would be techie wonk)?

Barium sulfate is just a salt. No idea how they get it on a mirror, but it's just paint! Must be a way to apply a layer of paint that is a few molecules thick. Beral? No one seems to know what it is, but it was an innovation of Leroy Clausing Coatings, That company is still in business I suppose, several generations down the road. But, that is vacuum evaporation deposited like plain old aluminum.

 

-drl

[starfinder123123]

For sale near me. Anyone knows what it is?

 

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[deSitter]

For sale near me. Anyone knows what it is?

That's modern department store junk. Avoid. All plastic, probably a simple sight tube finder, or single element tiny objective.

 

-drl

[laixiaolue]

Edmund Scientific 4 inch reflector? free in Bay Area.

 

https://sfbay.craigs...7763719149.html

[deSitter]

Edmund Scientific 4 inch reflector? free in Bay Area.

 

https://sfbay.craigs...7763719149.html

Holy cow!

 

Putting a Bay Area friend on this.

 

-drl

[laixiaolue]

Holy cow!

 

Putting a Bay Area friend on this.

 

-drl

It was gone? the post was deleted.

[starfinder123123]

That's modern department store junk. Avoid. All plastic, probably a simple sight tube finder, or single element tiny objective.

-drl

Thank you! And it’s $35.

[Marc-Andre]

For sale near me. Anyone knows what it is?

Looks like a Sears I had in 1965. As deSitter said it's all plastic. The finder has no optics. Rubber friction focuser. The metal tube has a "stovepipe" like seam. Pot metal altazimuth mount.  This one has been on the local market for $35, for over a year. Here. Oddly there's another local on for $120. 

Edited by Marc-Andre, 07 July 2024 - 07:36 AM.

[RichA]

Very even and high reflectance curve for IR to visual to UV applications. No idea about blooming or any of that, which is important for reflective coatings. Basically paint I have no idea how paint becomes a mirror coating

 

-drl

Yes, it's like coating a mirror with titanium dioxide.  Weird.

[starfinder123123]

Looks like a Sears I from 1965. As deSitter said it's all plastic. The finder has no optics. Rubber friction focuser. The metal tube has a "stovepipe" like seam. Pot metal altazimuth mount.  This one has been on the local market for $35, for over a year. Here. Oddly there's another local on for $120. 

Thank you. Yup that is it. Same scope.

[Lemmon714]

Here is an Ebay find.  Two (2) bids by the same person.  Mostly complete- I can't tell if there are any eyepieces with the scope.  60/ 800.

 

https://www.ebay.com...84075&recoPos=1

 

 

[ericb760]

Here is an Ebay find.  Two (2) bids by the same person.  Mostly complete- I can't tell if there are any eyepieces with the scope.  60/ 800.

 

https://www.ebay.com...84075&recoPos=1

No doubt that there are a number of people waiting to snipe on that as the auction end draws closer. No way that it doesn't go above $100, or probably even more. If I hadn't just made three other purchases this week, I would have no problem bidding $100 on it.

[Garyth64]

Old mount for 60mm scope:

 

https://www.ebay.com...:Bk9SR-DmpdORZA

 

This is a mount that would come with a Tasco 7TE-5.

[deSitter]

Old mount for 60mm scope:

 

https://www.ebay.com...:Bk9SR-DmpdORZA

 

This is a mount that would come with a Tasco 7TE-5.

That's in good shape! I have the same mount in a Monolux incarnation, and it's the most precise classic mount I have. It is difficult to adjust the RA mesh but once done it is perfectly smooth with very little main gear runout.

 

-drl

[Bomber Bob]

That's in good shape! I have the same mount in a Monolux incarnation, and it's the most precise classic mount I have. It is difficult to adjust the RA mesh but once done it is perfectly smooth with very little main gear runout.

 

-drl

Related:  The BEST Setting Circles I've owned in this 1960s class EQ were the flat-rimmed & engraved pair on the Monolux 4380.  The ASTRO versions - lines & numbers printed / silk-screened (?) on angled metal - can fade or rub off.  Found that out with my Sears 6336.  The whole mount & pedestal was heavily coated in tobacco smoke residue...  Wonder if that damaged them??

[SandyHouTex]

No doubt that there are a number of people waiting to snipe on that as the auction end draws closer. No way that it doesn't go above $100, or probably even more. If I hadn't just made three other purchases this week, I would have no problem bidding $100 on it.

Sold for $67.

[Russell Smith]

Nice, someone stole it.