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15 Jun 2018

Updated: 20 Feb 2019

Views: 1832

Sold!
$999.00

For Sale 17.5 inch f/4.5


By: SomeDoSomeDont Location: MI 48096

Or some lucky atm will get this in the inevitable estate sale.An 17.5 inch f/4.5 1.5 inch thick mirror weighing 35 lb...

25 May 2017

Views: 1711

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...

18 Apr 2017

Views: 1488


$15,000.00

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...

18 Nov 2018

Views: 1460


$50,000.00

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...

28 Aug 2019

Updated: 28 Aug 2019

Views: 1377

UPDATED
$50.00

For Sale Large Tag Sale ! - Great astro items needing new home.


By: ccdguy Location: Connecticut

Hi there....Well, it is time to sell some of my unused equipment. So it's astro tag sale time. Have a look. Priced re...

08 Jan 2018

Updated: 10 Sep 2019

Views: 1322

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...

22 Oct 2018

Updated: 22 Oct 2018

Views: 1305

UPDATED
$1.00

For Sale garage sale mostly refractors.


By: montag Location: Dubuque, Iowa

Too many projects, I'm leaning toward more wood-working with my lathe. 1. Minty 80mm f/5 gloss black OTA beautiful Mg...

26 Dec 2017

Views: 1161

Sold!
$800.00

For Sale 15" f/4.5 Telescope Mirror


By: Steve Dodds Location: Salt Lake City

For sale a 15" f/4.5 Focal length 67.625" 2" thick precision annealed Pyrex 27 lbs. Protected aluminum coating jus...

21 Sep 2017

Views: 1124

Sold!
$3,950.00

For Sale 1 Meter F/3.3 Pyrex Mirror Blank


By: ioptics Location: Salt Lake City, Utah

Actual Dimensions 38.8" x 1.75" Thickness Corning Pyrex Glass has been slumped and Fine Annealed to Menisicus shape...

09 Mar 2018

Updated: 15 Mar 2019

Views: 1091

Sold!
$675.00

For Sale Classic Cave 12.5" F8 Newtonian Mirror - Re-figured by Mike Lockwood


By: markraymond Location: Ohio

Vintage classic Cave 12.5" F/8 Newtonian Mirror Re-figured by Mike Lockwood.​Full-thickness 2.25" annealed Pyrex mirr...

30 May 2017

Updated: 26 Jan 2018

Views: 1081

Sold!
$150.00

For Sale 18" Pyrex Deep Spherical Mirror (REDUCED)


By: ccaissie Location: 04353

Now on Sale!!!! Acquired this from Don Dilworth years ago. Was originally crated and shipped to University of Alabama...

07 Feb 2018

Updated: 20 May 2018

Views: 1071

UPDATED
$800.00

For Sale Full thickness 16"F6 mirror and diagonal


By: bob midiri Location: se pa 19320

UPDATE 052018. Tested mirror with Foucault tester and Couder Mask see pictures, the surface is quite smooth and the e...

08 Sep 2017

Views: 1066


$400.00

For Sale 12.5 2" Mirror


By: Deewaltguy Location: Maryland

This is a 2" thick 12.5 mirror with a fl of 71.5" It is of unknown pedigree, and I never got it into a scope I'm offe...

03 Dec 2017

Views: 1066


$3,200.00

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...

13 Mar 2017

Views: 1061

Sold!
$1,500.00

For Sale Never Used 17.5" Coulter Mirror and 4.25" Secondary Mirror Set


By: madeline wiest Location: Pleasanton, CA

Never Used 17.5" Coulter Mirror and 4.25" Secondary Mirror set originally purchased in 1981 and was never taken out o...

08 Jun 2017

Updated: 12 Dec 2017

Views: 1053

Sold!
$225.00

For Sale Parks 10" f/6 Mirror


By: ccaissie Location: Maine

Full thickness Pyrex mirror with original good coating. Gave excellent views before I graduated to f/8's, and 16"'s.A...

19 Mar 2019

Views: 1049

Sold!
$550.00

For Sale 17" blanks, 16" cdk parts, 12.5" F4 mirror, carbon fiber tube


By: AG Optical Location: Alabama

We're cleaning out the parts bin...... you can pick up the parts or have them shipped..... 1) finished carbon fiber...

21 Jul 2017

Views: 1035

Sold!
$750.00

For Sale 14.5" f/4 Telescope Mirror


By: Steve Dodds Location: Salt Lake City

For sale a 14.5" f/4 Focal Length 58.0" 1.5" Thick precision annealed Pyrex. Protected aluminum coating. Has a 1.5" c...

27 Jul 2018

Views: 1005

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...

23 Dec 2018

Updated: 02 Feb 2020

Views: 1002

UPDATED
$500.00

For Sale 16 inch f/4.5 mirror in 9pt cell


By: carolinaskies Location: Greenville SC

I have this 16" f/4.5 mirror from the 1980s which was part of a local club scope. It's about 1 7/8 thick. I bought i...

28 Apr 2017

Updated: 01 Jun 2017

Views: 993

UPDATED
$85.00

For Sale Pyrex 7740 Mirror Blanks - SOLD


By: johnlynch Location: Leesburg, Virginia

I'm selling two Pyrex 7740 8-inch mirror blanks that I purchased many years ago. The first is a Corning molded blank...

09 Jun 2017

Updated: 10 Jun 2017

Views: 986

Sold!
$289.00

For Sale 10 inch f4 Cave optics set. Possibly entire OTA and mount.


By: mashirts Location: Elgin, TX

**Mount has been sold, OTA and optics available** Mount was Cave Astrola for sure. Primary mirror the focal length is...

01 Nov 2017

Updated: 05 Nov 2017

Views: 978

UPDATED
n/a

For Sale REDUCED 16"F6 pyrex mirror and diagonal read


By: bob midiri Location: se

Last reduction $925 shipped CONUSA, or $875 picked up.REDUCED: High quality This is pyrex, 16"F6 mirror, with 2.5" di...

18 Jun 2018

Updated: 22 Jun 2018

Views: 978

Sold!
$900.00

For Sale 18" Compact Precision Telescope Frame


By: drzhenyu Location: San Francisco Bay Area

For sale here is a frame from Compact Precision Telescope. The frame is machined from aluminium alloy, it includes:3....

07 Jul 2018

Views: 974

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...

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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