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18 Nov 2018

Views: 1768


For Sale 75" Low Expansion Telescope Blank Corning Glassworks

By: gatorengineer Location: Pittsburgh PA Area

Not a typo. Over 2 yards of fun for someone. Kev and I have to settle for 71" the hard way. This one is not going...

18 Apr 2017

Views: 1812


For Sale Large Lightweight Mirrors

By: Astronorm Location: CANADA

If you are looking for a large Lightweight Mirror, I developed over the last 5 years with the help of Laval Universit...

13 Oct 2020

Views: 455


For Sale Tube and carrier for 8" Newtonian

By: MikeBY Location: Huntington Beach, CA

Greetings, For sale is a handcrafted telescope tube to make an 8" long tube Newtonian. The tube is made of luan type...

22 Jan 2020

Views: 815


For Sale Vacuum Deposition Mirror Coating System

By: DaystarJen Location: Warrensburg, MO

Complete NCR 3117 Vacuum Deposition Coating Deposition System for mirrors up to 18".This system is set up to coat mir...

06 Jun 2020

Updated: 20 Nov 2020

Views: 1023


For Sale Premium 23 inch diameter f/4.74 primary mirror

By: Jedi Dan Location: Illinois

An exquisitely figured ultra low expansion full thickness radially ribbed primary mirror at a phenomenally low price....

25 Apr 2018

Updated: 25 Apr 2018

Views: 1097


For Sale Glass blanks for sale

By: AstroDxtr54 Location: Arizona

1- 22 1/2" Pyrex blank, 3 1/2" thick, center hole, with finished 21 1/2" Maksutov Corrector Plate (the plates the har...

29 Oct 2020

Updated: 12 Nov 2020

Views: 378


For Sale Complete 20" f/5 parts, brand new everything!

By: Edobson20 Location: Datil, NM

Torus OMI 20" f/5 mirror new in box. 3.5" Antares 1/30th wave new. Brand new Astrosystems spider and matching seconda...

05 Jun 2019

Views: 1032


For Sale 60" Polishing Machine

By: ioptics Location: Salt Lake City, UT

60" Capacity Spindle Polisher Heavy Duty Came out of optical lab, fully functional 220Volt Single Phase DC Motors Of...

24 May 2017

Views: 1036


For Sale 24" f/4.1 Mirror

By: Steve Dodds Location: Salt Lake city

For sale a 24" f/4.1 Focal Length 99.25" 2" thick fine annealed Pyrex. Enhanced Aluminum (96%) coating. Tested by dou...

01 Jan 2021

Views: 402


For Sale Exceptional 20" f4.2 Primary 1/16th Wave

By: mcwolfson Location: Ottawa, Canada

Mirror has been refigured and recoated by Normand Fullum. Quality of the optics, Strehl = .991 and weighs 37 pounds,...

16 Oct 2017

Views: 1020


For Sale 22.5" Pyrex Telescope Primary Mirror & Matching 4" Secondary

By: ruachsheavens Location: 60050

This is the end of a dream. Recent diagnosis of issues with 3 discs in my back necessitate this sale. This mirror and...

18 Dec 2019

Views: 550


For Sale GSO 16inch F8 RC mirror set

By: xuranus Location: South Korea

This is the same mirror of the GSO 16" RC OTA. I have 2 set. (primary mirror + secondary mirror) Never used. Each on...

06 Sep 2020

Views: 682


For Sale 20-inch Maksutov corrector lens

By: ThomasMM Location: Danville, CA 94526

For Sale 20-inch Maksutov corrector lens. This has been on an going project for some 20-years. Time is up. Requires a...

03 Dec 2017

Views: 1267


For Sale ZERODUR optical mirror

By: JeanpierreG Location: Belgium

For sale; Two 16,5 inch F1 ZERODUR Mirrors Thickness 4,5 inchorigine Waferstepper Philips factory Eindhoven (Netherl...

12 Nov 2020

Views: 313


For Sale Torus OMI 20" f/5 primary new in box.

By: Edobson20 Location: Datil, NM

Never used still in box Torus primary f/5 Perfect. Have another add with all the rest of the scope plus this mirror....

Yesterday, 06:45 PM

Views: 338


For Sale 36" Pyrex Cellular Mirror Blank

By: Shane LaPierre Location: Connecticut

Are you ready to make your dream telescope? For Sale/Trade is a 36" Pyrex Cellular Mirror Blank I have an amazing...

26 Mar 2020

Views: 605


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 -...

25 Aug 2020

Views: 504


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...

19 Feb 2019

Updated: 20 Feb 2019

Views: 555


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...

11 Jan 2019

Updated: 11 Jan 2019

Views: 1195


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: 1539


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...

11 Oct 2020

Views: 294


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: 521


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: 715


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: 526


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....

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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