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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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29 Jun 2020

Views: 143


$40.00

For Sale TSI (U.S.) 70mm Achromat lens in cell 375mm f.l.


By: RichA Location: Toronto

TSI (Italy) 70mm Achromat lens in cell 375mm f.l. Good condition, cemented, mag-fluoride coated. Cell top ring o.d....

29 Jun 2020

Views: 181

Sold!
$110.00

For Sale Dob Driver II & Related (Maybe) Parts


By: Tom Duncan Location: Chico, CA

Got this lot in a recent astro estate buy, all in the same box but I'm not sure they all related, mostly because of t...

29 Jun 2020

Views: 126

Sold!
$35.00

For Sale 90mm x 1000mm AirSpaced Achromat


By: MASILMW Location: US

90mm x 1000mm AirSpaced Achromat The lenses are coated and come in a plastic cell. This is a used achromat and would...

29 Jun 2020

Views: 61

Found!
$1.00

Wanted Spider for 10" scope project


By: scottinash Location: TN

I'm looking for a spider assembly, hopefully with secondary holder as well that will work with my 10" truss build pro...

29 Jun 2020

Views: 247


$125.00

For Sale Celestron Star Hopper 8" f/6 Primary Mirror & Cell


By: astromajor Location: Greater Metro-Detroit (North) Area

For your consideration is a Celestron StarHopper 8" f/6 (Conical) Primary Mirror & Cell. The Mirror appears to b...

28 Jun 2020

Views: 162


$40.00

For Sale 1" OD Aluminum Round Poles for Truss Dobs


By: Augustus Location: Connecticut

These are all from DX Engineering. Originally backups for my 14.7", not needed now. 0.058" wall thickness, Includes:S...

28 Jun 2020

Views: 216

Sold!
$50.00

For Sale 6” f8 Criterion Mirror with Cell


By: Eric P Location: PA

Needs new coating. $ 50 includes CONUS shipping and PayPal fees

27 Jun 2020

Views: 295

Sold!
$80.00

For Sale Firsthand Discovery 6" Mirror Kit


By: Augustus Location: Connecticut

Was going to make a 6" f/3 out of this but lost interest. Includes all grits except #80, 150mm Supremax blank ground...

27 Jun 2020

Views: 175

Sold!
$60.00

For Sale GSO 6" f/6 primary


By: alvin58 Location: MN

I have a GSO primary that I bought for a project several years back and never did use it. Bought it from an individua...

26 Jun 2020

Views: 406

Sold!
$175.00

For Sale 102mm F6.5 Air Spaced Achromatic Lens NASA Spec


By: starbird Location: 95409

This is a superb 102mm 26" focal length F6.5 airspaced nasa spec lens. It is in a metal cell with outside threads. Gr...

26 Jun 2020

Views: 307

Sold!
$95.00

For Sale Celestron C8 Optics Primary, Secondary, Secondary Holder


By: starbird Location: 95409

This is a set of celestron C8 optics. Including the primary mirror, convex secondary mirror, and adjustable secondary...

26 Jun 2020

Views: 167

Sold!
$10.00

For Sale Dobsonian Truss Shroud Fabric


By: Barry Peckham Location: HI

If you use the rip-stop nylon material for your shroud you know it is not ideal. It sags into the light path, it is n...

25 Jun 2020

Views: 202


$50.00

For Sale Truss Tubes for 10" & 12" Explore Scientific Dobs


By: scopehed Location: Meadview, Az

Truss Tubes 10" & 12" to Choose From These came off of an Explore Scientific DOB 1) 10" Truss Tubes complete set...

25 Jun 2020

Updated: 15 Jul 2020

Views: 461

UPDATED
$600.00

For Sale NIB 12.5" mirror - see description for more info & specs


By: cjmangino Location: Olympia, WA

NIB 12.5" mirror, focal length 63.58", P-V1/ 10.2, RMS1/ 24, S Ratio .931Hi - this is a mirror my husband purchased t...

24 Jun 2020

Views: 182

Sold!
$20.00

For Sale 18" Trunnions (altitude bearings)


By: Barry Peckham Location: HI

Designed in AutoCad and made on a CNC router using cabinet-grade 3/4" plywood, ready for edge-banding and finishing....

24 Jun 2020

Views: 528

Sold!
$150.00

For Sale 10" Dobstuff kit, mostly finished


By: Augustus Location: Connecticut

Used, no focuser board, a few extra holes and some wear here and there. Varnished with Minwax triple-thick polyuretha...

24 Jun 2020

Views: 230


$15.00

For Sale 7/8" x 36" Aluminum Tubing


By: Barry Peckham Location: HI

This is the diameter recommended by Tom Clark (and me) for truss poles. #6061 aluminum alloy, very stiff but also cru...

24 Jun 2020

Views: 272


$15.00

For Sale Corner Trim for 1/2" ply Dobsonians


By: Barry Peckham Location: HI

This shape of trim is hard to make but lets mirror boxes go together without lapping the sides. I use a 5/8" x 5/8" g...

24 Jun 2020

Views: 110

Sold!
$18.00

For Sale 4.125" Double convex lens


By: wavefront Location: Colorado

This 106mm equi convex (or fairly so) lens has a focal length of approximately 5 inches. Glass type unknown. Coated....

22 Jun 2020

Views: 178


$49.00

For Sale 98mm diam 170mm focal length achromat lens IR optimized


By: RichA Location: Toronto

98mm diam x 170mm focal length achromat lens IR optimized. Excellent condition. Outer diameter is 110mm, with short...

21 Jun 2020

Updated: 23 Jun 2020

Views: 368

Sold!
$150.00

For Sale 9.75" (10" Nom) f/5 Mirror (Nova-Refig/Uncoated)


By: comabereni Location: Utah (84009)

This mirror is finished and ready for coating. I had it tested and refigured by Steve Dodds of Nova Optical in May, 2...

19 Jun 2020

Updated: 28 Jun 2020

Views: 405

UPDATED
$300.00

For Sale Jaegers 6" f/5 objective set


By: mccarthymark Location: Fremont, CA

Very nice Jaegers 6" f/5 objective crown & flint. Put up very nice views for me, but I'm raising funds for someth...

19 Jun 2020

Updated: 19 Jun 2020

Views: 414

Sold!
$60.00

For Sale Excellent 8" F/6 Newtonian mirror


By: rachnoman Location: Indiana

Available : Beautiful vintage 8" F/6 Pyrex mirror with diffraction limited optics. The figure is very nice and exhib...

18 Jun 2020

Views: 123

Sold!
$35.00

For Sale AstroSystems Super Duty Spider for 18.5" ID Tube


By: Augustus Location: Connecticut

Good shape. Some wear. $35 + shipping.

18 Jun 2020

Views: 116

Sold!
$190.00

For Sale AstroSystems 3.1" Secondary + Holder + DewGuard


By: Augustus Location: Connecticut

Great shape. These are rated to at least 1/14 wave, not sure what mine specs at but something around there I presume....

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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