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24 Apr 2018

Views: 455


For Sale Edmund Scientific Secondary Mirror, minor axis = 1.25"

By: mlucas9 Location: Knoxville, TN

Hi All, For sale is a brand new condition, Edmund Scientific secondary elliptical mirror, minor axis = 1.25" (31mm),...

11 Mar 2020

Views: 546


For Sale ES 80mm f/6 ED Triplet Lens & Cell w/a very small chip

By: MASILMW Location: US

ES 80mm f/6 ED Triplet Lens & Cell w/a very small chip The lenses are Fully Multi-Coated and comes in a metal cel...

24 Oct 2018

Views: 323


For Sale 10 inch Orion Primary Mirror Cell

By: CrashCrevey Location: Houston

10 inch primary mirror cell from Orion. She's a little rough but, all the parts are there and works as it should. $3...

23 Jan 2019

Views: 247


For Sale Edmund Scientific 1.5" Minor Axis Elliptical Diagonal Flat

By: starbird Location: 95409

This is an Edmund 1.5" minor axis diagonal. Pyrex glass in nice used condition. It is mounted on a wood block but is...

17 May 2019

Views: 201


Wanted Spider for 11.5"-12" ID Tube

By: Augustus Location: Connecticut

Need this for a 10" Dob, the one I have on hand isn't ideal. Thanks.

28 Aug 2017

Views: 480


For Sale Jaegers 5" Objective Cell

By: Chuck Hards Location: UT

Jaegers 5" objective cell in very good to excellent condition. Never been used, no holes drilled. Fits 5" OD tubing...

21 Aug 2019

Views: 294


For Sale Rare Edmund Finder Scope Crosshair Eyepiece

By: starbird Location: 95409

This is an Edmund crosshair eyepiece from an edmund straight through finderscope. The finder it came from was I beli...

18 Mar 2021

Views: 159


For Sale 4" Aluminum Lens Cell for a 102mm Lens

By: starbird Location: 95409

This is a new 4" aluminum lens cell. It fits a 102mm lens. This add is for the cell only no lens. The measurement is...

13 Oct 2017

Views: 453


For Sale Vixen Celestron 114mm Newt parts

By: Littlegreenman Location: South Pasadena, CA

$7.50 for each of the 3 parts or make an offerBuyer pays shippingI take Paypal, MOThanks for looking,LGM

28 Dec 2019

Views: 407


For Sale BYERS 359 tooth gear and worm

By: nlamendo Location: Lima, NY

Byers 359 tooth, 4.650" O.D. aluminum gear with stainless steel worm. The inside diameter is 3.5". Unused, in perfect...

17 Jul 2021

Views: 255


For Sale Short tube 80 “kit”

By: Lynnblac Location: Phoenix

Multicated 80mm f/5 lens and cell to make Short tube 80 telescope. Includes an 1-1/4” rack and pinion focused and a 3...

28 Feb 2020

Views: 214


For Sale Jaegers 6" Refractor Dew Shield

By: starbird Location: 95409

This is a Jaegers 6" refractor dew shield. It fits over Jaegers 6" lens cell and is a slip fit. Dewshield only nothi...

01 Jun 2018

Views: 249


For Sale 23-3/4" Losmandy Dovetail

By: Tom Duncan Location: Chico, CA

Used 23-3/4" long Losmandy-style dovetail. Has the relieved back side to reduce weight, only weighs 4lbs 3oz now! No...

25 May 2020

Views: 462


For Sale 10- inch polished mirror uncoated

By: myronwasiuta Location: Spotsylvania Virginia

10-inch diameter approx focal length 60 inches. 1.75 inches thick. Looks to be very old. Uncertain as to whether it i...

11 Jun 2020

Updated: 11 Jun 2020

Views: 495


For Sale 4" F4.5 Air Spaced Achromatic Lens in Aluminum Cell

By: starbird Location: 95409

This is a 100mm 4" aperture F4.5 focal ratio air spaced doublet achromatic lens in cell. The cell is a beautiful anod...

06 Nov 2020

Updated: 06 Nov 2020

Views: 163


For Sale Optical Encoder 2160 6mm Shaft

By: Bartlebee Location: New Mexico

I have a never used 2160 Optical Encoder for sale. 30$ which includes shipping in the USA. Shaft is 6mm

31 Mar 2017

Views: 508


For Sale Brashear Finder Telescope Lens in Brass Cell

By: starbird Location: 95409

Some years ago I rescued this lens from a Brashear 5" refractor telescope. The finderscope was trashed but the lens w...

30 Jul 2019

Views: 440


For Sale 12.6 inch optical window

By: wiseone Location: UK

New and unused 12.6 inch BK7 optical window for making a closed Newtonian or similar. Optically perfect (see Ronchigr...

30 Apr 2021

Views: 403


For Sale 10” F4.7 mirror with cell, focuser, secondary mirror

By: Nightrider73 Location: Florida

10” F4.7 mirror + cell + secondary mirror and new (never used) nice helical focuser with extension tube. orion mirror...

20 Feb 2018

Updated: 24 Feb 2018

Views: 775


For Sale 6" Littrow Lens Set, Unfinished, UPDATED

By: ccaissie Location: 04353

6" Littrow set Crown element R1=R2 finished, polished. Flint element R3 is semipolished, R4 (flat) is fine Ground. u...

16 Sep 2018

Views: 359


For Sale 12.5" f/8 Pyrex Primary Mirror - UNFINISHED

By: Augustus Location: Connecticut

Perfect for a planet killer or Chief! This mirror has been partially polished out at a focal ratio of approximately f...

20 Aug 2020

Views: 131


Wanted Wanted: Spider and secondary holder for 6" telescope

By: shootingsta98 Location: Rhode Island

I would like to buy a spider that will fit a 6 7/8" id tube with a 1.25 secondary holder. Old Novak, RV-6 spider or...

12 Dec 2018

Views: 434


For Sale 10.5 inch sonotube 1/8 inch wall. 42 inches useable

By: mashirts Location: Elgin, TX

Don't waste energy looking for 10 inch sonotube at Lowe's or Home depot. The only sell 12 and 8 inch. The is 10.5 i...

06 Nov 2020

Views: 301


For Sale Pair of Meade Radius Blocks for Telescope Tube

By: starbird Location: 95409

This is a Meade set of two radius block to mount a telescope tube to a flat mount plate. The radius blocks fit about...

09 Apr 2017

Views: 594


For Sale Wolf Gearless Drive

By: Chuck Hards Location: UT

This is the Wolf Gearless Drive, advertised in the magazines decades ago. I bought it used on eBay a few years ago, b...

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