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26 Mar 2020

Views: 561


$2,950.00

For Sale Objective C 110/750 Carl Zeiss Jena


By: lusen Location: Germany Deggendorf

CARL ZEISS JENA Objective Lens C 110/750 COMETFINDER-Objectiv Nr. 62141 it is the last one Cometfinder C 110/750 -...

27 Jul 2018

Views: 1132

Sold!
$2,600.00

For Sale 1 meter F/3 Pyrex Primary Mirror Blank


By: ioptics Location: Salt Lake City

39 1/4" Diameter x 1 3/4" Thickness uniform throughout (meniscus convex back) Blank was slumped and fine annealed pri...

05 Mar 2018

Views: 694

Sold!
$2,600.00

For Sale Recently Finished 17.5" F /4.5 Primary Mirror by Steve Swayze


By: ruachsheavens Location: 60050

I sent this mirror off to Steve Swayze for re-figuring and it came out very, very nice according to him (have paperwo...

25 May 2017

Views: 1909

Sold!
$2,500.00

For Sale It’s just not a big telescope mirror, it’s a piece of history….


By: Rexcat Location: New Berlin, Wisconsin

It’s just not a big telescope mirror, it’s a piece of history…. The Milwaukee Astronomical Society purchased a blank...

25 Aug 2020

Views: 476


$2,500.00

For Sale 3 Kilns For Saale - Up To 40 - Electronic Controller


By: wrecker_0 Location: La Grange, Texas

3 separate kilns for sale. Has electronic controller! 1 is 40 inches in diameter. Can be used to cast or slump or ann...

31 Dec 2017

Views: 477

Sold!
$2,500.00

For Sale 25" dia. x 2 1/8" thick Pyrex Mirror Blank


By: Scott Milligan Location: Hubbardston MA

25" dia. x 2 1/8" thick Pyrex Mirror Blank sourced from United Lens. Edged round and beveled, one side generated fla...

22 Aug 2020

Views: 388

Sold!
$2,500.00

For Sale 24" Flat Test Mirror


By: ioptics Location: Salt Lake City

24" Diameter x 2.5" Thick Precision Optical Flat Mirror 2.5" Central Perforation Manufactured by Kodak Optical for Au...

19 Feb 2019

Updated: 20 Feb 2019

Views: 543

UPDATED
$2,500.00

For Sale 10" Stainless steel vacuum system


By: Stan_kohut Location: North east Ohio

I have a 10" Stainless double wall "for cooling I imagine" vacuum chamber, with a valve to close off the Diffusion Pu...

01 Jan 2018

Views: 626

Sold!
$2,300.00

For Sale 15 Inch Hextek Optical Flat


By: gatorengineer Location: Ne PA

Had this for a while, was thinking about using it to fold the 36, but have decided against it hence its available. L...

13 Mar 2019

Views: 595

Sold!
$2,200.00

For Sale Beautiful 20 inch F/5 OMI Torus Primary with Enhanced Coatings


By: ruachsheavens Location: 60050

This is the primary mirror that is in my 20 inch Obsession Telescope. It is in great shape, mirror and coatings both,...

07 Jul 2018

Views: 1136

Sold!
$2,200.00

For Sale Large Telescope Mirror Polishing Machine


By: ioptics Location: Salt Lake City

Custom built Litton Optical Polishing Machine Engineered for high tolerance work. Draper style 2 Variable drive DC mo...

28 Oct 2017

Views: 624

Sold!
$2,150.00

For Sale 17.5" F4 Swayze Primary mirror


By: bartine Location: Silver Spring, MD

17.5" F4 Swayze Primary mirror Beautiful and like new - bought it for a project that didn't work out Signed, 2009 -...

24 Jul 2018

Views: 581

Sold!
$2,000.00

For Sale 24 inch Byers gear set


By: howardbrown Location: N. Utah

24 inch Byers gear set- 584 tooth, worm section= 3 inches,3.5 inch bore. $2000 plus shipping. Beautiful set haven't s...

11 Jan 2019

Updated: 11 Jan 2019

Views: 1145

UPDATED
$2,000.00

For Sale 16" Parabolic mirrors - Parks "lightweight"


By: Cary Location: Sacramento, CA

As part of our recent acquisitions, we acquired the remnants of the Parks Optical Inventory.We have a number of the 1...

08 Jan 2018

Updated: 10 Sep 2019

Views: 1505

UPDATED
$2,000.00

For Sale 20inch RC ATM project (Lower Price)


By: Gert Location: Bay Area CA

Dear CN enthusiasts, This is a chance for the dedicated ATM to complete a project that I have started a long time bac...

21 Jan 2018

Views: 783

Sold!
$2,000.00

For Sale Swayze 18 inch f/4.5 Mirror


By: gdjsky01 Location: Harbor City, CA

Excellent condition including coatings. 1.8 inches thick In Southern CA for your inspection. $2000 or $2200 shipped...

11 Oct 2020

Views: 258


$2,000.00

For Sale Carbon Fiber Tube 38.75" x 78"


By: Fabry Location: Tucson, Arizona

Here is a project I’ll never complete, I have a carbon fiber tube 38.75" o.d. x 78" long. It is laid up carbon fiber...

28 Mar 2019

Views: 499


$2,000.00

For Sale 100ED triplet binocular optics


By: skyward_eyes Location: AZ

I have a set of optics for a 100mm f/5.5 binocular project. I had planed to put this together and frankly just have t...

05 Apr 2020

Views: 676


$1,950.00

For Sale Zambuto 12.5" F4.6 Mirror


By: sqrlman Location: Central Ohio

Zambuto 12.5" F4.6 Pyrex mirror. 1.25" thick. I purchased this new from Carl Zambuto. It was a custom order made to f...

06 Jan 2020

Views: 501


$1,875.00

For Sale Fused Silica Massive Double Sided Flat


By: Peter Nance Location: 92870

Fused Silica Massive Double Sided Optical Flat This is the master flat which you can use as a standard for flatness....

14 Aug 2020

Views: 960

Sold!
$1,800.00

For Sale 24" F/3 Intermountain Optics Mirror


By: ioptics Location: Salt Lake City

24" Diameter x 3" Thick F/3 Pyrex Parabolic Mirror F.L. 73.5" 3" Central Perforation (used previously for mounting) C...

23 May 2017

Views: 616

Sold!
$1,800.00

For Sale 16" f/3.7 Mirror


By: Steve Dodds Location: Sal;t Lake City

I have a 16" f/3.7 1.5" Fine annealed Pyrex. Focal Length 59.0" Mirror New Coating. Tested by Double pass autocollima...

17 Nov 2020

Views: 385

Offer Pending
$1,750.00

For Sale Zambuto 10" F/5 quartz mirror *Brand New*


By: jeanine Location: Utah

Selling my Zambuto quartz mirror. Thickness is .8" Only removed from box for photos and inspection. Purchased late sp...

23 Jun 2018

Views: 425

Sold!
$1,749.00

For Sale CerVit 17" x 1.98" Mirror Blank


By: PeteDCard81 Location: Minneapolis, MN area

CerVit mirror blank, 17.0 inches diameter by 1.96 inches thick, blanchard ground flat both sides. No chips or cracks....

27 Oct 2018

Views: 733

Sold!
$1,700.00

For Sale 17.25" f/4 Lightweight Quartz Telescope Mirror


By: Steve Dodds Location: Salt Lake City

For sale a superb 17.25" f/4 quartz mirror. Focal length 68.25" 1.2" thick precision annealed Quartz. Weight 20 lbs S...

CNers have asked about a donation box for Cloudy Nights over the years, so here you go. Donation is not required by any means, so please enjoy your stay.


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