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11 Mar 2020

Views: 395


$500.00

For Sale 10.2" f/15 off axis parabola


By: Steve Dodds Location: Salt Lake City

For sale the ultimate planetary telescope. 10.2" unobstructed f/15 off axis parabola. The optical center is 4.5" fr...

15 Jan 2020

Views: 444


$450.00

For Sale 8" f/7 primary mirror


By: Jedi Dan Location: Illinois

This is a high performance mirror has collector's item value made in 1962 at the Adler Planetarium optical shop by on...

23 May 2020

Views: 160


$450.00

For Sale Rare Henry Wildey 12.5 inch F 6.9 mirror, signed, with cell


By: balotin Location: GA

This is a 12.5 inch mirror figured by Henry Wildey, the optician who made the mirrors for Fullerscopes. The mirror is...

20 Jan 2020

Views: 356


$450.00

For Sale NEW ISTAR Optical 127mm (5") F/8 Achromat Objective


By: DaystarJen Location: 64093

Never opened outside of our clean room. We used to use these in our SR-127 but now use our own custom prescription....

27 May 2018

Updated: 21 Jun 2018

Views: 568

UPDATED
$425.00

For Sale 16.5" X 2.75" Pyrex Mirror Blank


By: lonrobie Location: Sacramento, CA

This is a Pyrex 2.75" thick molded mirror blank. The bottom has been ground flat, it is curve generated to f/5.38 wit...

02 Mar 2020

Views: 219


$400.00

For Sale Ceravolo Interferometry Reference Element and GRIN lens


By: AG Optical Location: USA

I have for sale new, unused, unopened Ceravolo Zerodur reference element and GRIN lens. These are the two critical op...

08 Sep 2017

Views: 1085


$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...

08 Dec 2019

Updated: 30 Jan 2020

Views: 503

UPDATED
$400.00

For Sale 16" x 3" thick Pyrex Navy signaling mirror


By: kmelvin Location: fowlerville, michigan

Hello, I have an old 16" x 3" thick Pyrex Navy signaling mirror and mount approx. 115" focal length I believe it is s...

20 Oct 2019

Updated: 27 Oct 2019

Views: 662

UPDATED
$400.00

For Sale 14" F/7.0 Fused Silica Mirror, 0.745" Thick


By: mark cowan Location: Salem, OR

14" F/7.0 Fused Silica Mirror, 0.745" Thick - Outstanding thermal performance, fully polished, excellent edge.Focal L...

12 Aug 2018

Updated: 05 Nov 2018

Views: 481

UPDATED
$395.00

For Sale Exquisite 10" f/8 Pyrex Primary


By: ccaissie Location: 04353

DPAC shows excellent Null, Foucault and XP indicate 1/20 wave. Full thickness Pyrex, 80.0" focal length. Rouge finish...

25 Sep 2019

Updated: 28 Sep 2019

Views: 342

UPDATED
$395.00

For Sale Celestron 9.25" Celestron Prime Mirror, and surplus.


By: Flipper101 Location: Lubbock,Texas

Nice C-9.25" optics Only. Celestron carries some very Fine Pieces...These-I have measured are a 1) 9.56" Diameters' ,...

21 Oct 2019

Views: 505


$395.00

For Sale BYERS GEARS Brand New


By: tincanandstring Location: Philippines

Brand New Gearsets, as received from Ed Byers. Prices include shipping to the US, but I can ship to many countries fo...

29 Jul 2018

Views: 315


$350.00

For Sale Mirror Blank


By: Optics101 Location: Napa

7 3/4'' Diameter X 1 1/8 thickness Zerodur Telescope Mirror Blank. Can generate your radius into blank for a small fee.

22 Feb 2018

Updated: 12 May 2018

Views: 558

UPDATED
$325.00

For Sale 10" BK7 Schott Blank. PK/A (250mm x 35mm)


By: ccaissie Location: 04353

In wrapper, I expect the melt data is on the certs inside. Sold its sister blank years ago, unwrapped, a beautiful p...

01 Nov 2017

Views: 499


$300.00

For Sale Nice Orion 10" Optics set - mirror, cell, diagonal, 4 vane spider !


By: ruachsheavens Location: 60098

here's a nice set of all you would need for the optics on your own homebuilt 10" DOB!. Coatings on both mirrors are i...

28 Jun 2018

Views: 581


$300.00

For Sale Tele Vue Systems Mount


By: Raceman Location: Orlando Fl

Tele Vue System mount with wooden legs Dec and Ra fine control cable Used and some paint scratches on the black paint...

15 Mar 2017

Views: 396


$299.99

For Sale 4" Secondary


By: big gray Location: Az

4" elliptical secondary new uncounted $299.00 shipped conus.

16 Feb 2018

Views: 748


$299.00

For Sale GSO 10" f/5 Primary Mirror with 2.5" Secondary


By: jdburr66 Location: Lakewood, CO, USA

GSO 10" f/5 Primary Mirror with 62mm (2.5") Secondary Mirror.250mm aperture, 1250mm focal length, f/5, 35mm thickness...

08 Nov 2017

Views: 294


$295.00

For Sale Custom Rocker Boxes for any Telescopes . . .


By: Dennis Steele Location: Palm Desert, CA.

Get a furniture grade all Baltic birch rocker box upgrade for your 10", 12" or 16" Lightbridge (or any other telescop...

19 May 2020

Views: 145


$295.00

For Sale Lightbridge Rocker Boxes and more ....


By: Dennis Steele Location: Palm Desert, CA.

Get a furniture grade all Baltic birch rocker box upgrade for your 10", 12" or 16" Lightbridge (or any other telescop...

05 Jan 2019

Views: 477


$285.00

For Sale Vintage 4.5" F15 Airspace Lens in Collimatable Cell


By: starbird Location: 95409

This is an old 4.5" F15 airspaced lens in a collimatable cell. Both parts of the cell are present. Lens has a clear...

19 Jun 2018

Views: 454


$275.00

For Sale CNC cut Baltic Birch rings for 14" Newtonian (Orion Dob)


By: Cerberus Location: Wichita, KS

This ring cradle was cut on a CNC router by Astro-Goods for my 14" F/4.6 Orion XX14i. They fit great and are solid. T...

24 May 2019

Views: 311


$250.00

For Sale Truss Tube Rings - 31"ODx26"ID


By: bill goff Location: Sutter Creek, Calif.

Set of seven aluminum rings for truss tube assembly. All are 31" outside x 26" inside and were water jet cut on CNC...

11 Jan 2018

Updated: 09 Jun 2018

Views: 654

UPDATED
$250.00

For Sale 14.5" diameter x 0.8" thick fused silica mirror blank.


By: Scott Milligan Location: Hubbardston MA

Both sides plano, one shallow edge chip, about 0.020" deep, will easily clean up in grinding or else can be stoned ou...

23 Oct 2017

Views: 558


$250.00

For Sale 10" Fused Silica Optical Window


By: ioptics Location: Salt Lake City, Utah

10" Diameter x 1.0" Thickness Fused Silica Window Good Condition Minor scratches, BackSide has 1/4" chips and ding (...

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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