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12 Aug 2019

Views: 198


Wanted Monochromatic Light Source

By: Dessman Location: Buffalo, NY

Hello, Trying to find a good monochromatic light source for contact interferometry. Thanks! Bryan

27 May 2018

Updated: 29 May 2018

Views: 320


Wanted FOUND Mirror - Secondary for Celestron C8

By: mpupeza Location: Ontario, Canada

Mirror found at Spectrum Coatings - great news for me! Secondary Mirror for Celestron C8+. This is the small convex...

02 May 2019

Views: 262


For Sale 4" aluminum ota's with 2" focusers, no objectives

By: montag Location: Dubuque, Iowa

Nice ota's with 2" synta-type focusers for your 4" refractor project. Made by Paul Rini..flat black interior, light b...

08 Dec 2020

Views: 88


Wanted CPC Series PC & AG board PS-EL-4-X2

By: ATrail Location: Oklahoma

I need the PC & AG board (PS-EL-4-X2) for a CPC Alt/AZ mount.

22 Sep 2019

Views: 217


Wanted Needed: 9” Teflon Disk with glueably backing

By: MDearingJaxFL Location: Needed in Jax, FL

I need a 9” disk of thin Teflon (1/16” thick) that has a glueable backing on the disk’s rear so it can be glued down....

27 Sep 2020

Views: 171


Wanted Big >16" slow Say F6+ mirrors

By: gatorengineer Location: Wherever

Title says it all, have a project in mind and need big and slow. Dont need the ladder LOL

16 May 2020

Views: 352


For Sale Classic Japanese Mount Spare Parts *FREE!*

By: jragsdale Location: Eagle, ID

This is a sad mount, it was given to me to use for spare parts, I took what I needed so now I'm offering up any indiv...

14 Sep 2019

Views: 132


Wanted Wanted - round flat mirror 3"-3.5" diameter

By: jtsenghas Location: Ship to zip 44817

I'm in the process of accumulating components for an experimental ATM Ed Jones Chiefspiegler and am looking for a mor...

05 Nov 2020

Views: 76


Wanted Wanted: 3.75" - 4" secondary mirrors

By: C3P0 Location: Melbourne, Australia

I'm building a binoscope and am looking for 2 secondaries of between 3.75" and 4"

09 Jan 2019

Views: 282


Wanted Tube with 7-8" internal diameter - short sections ok

By: Gavin Warnes Location: New Jersey

I'm rebuilding my 6" f/5 travelscope. I made it years ago by adapting a design by Albert Highe but it's too heavy so...

13 Jan 2021

Views: 89

Offer Pending

Wanted Looking for 1in or 0.75in diagonal

By: annatsang Location: CT

I need a small diagonal for a 4.25 in f/10 scope. Let me know what you have. thanks sandy

08 Jun 2018

Views: 281


Wanted hurst synchronus motor

By: ishorx Location: romeoville,il.

hi,looking for a hurst model ca 115v...5w...at 5rpm motor

26 Oct 2018

Views: 253


Wanted Wanted 16 inch mirror blank

By: gears Location: Austin, Texas

Want to buy your 16 inch pyrex mirror blank. 2 inches thick would be perfect but would consider up to 2.7 inches. Pa...

26 Nov 2017

Updated: 02 Dec 2017

Views: 324


For Sale 4.25" Mirror cells

By: mike welsh Location: NE Illinois

University Optics mirror cell.Adjustable for various size tubes.Missing retention clips- an easy fix.$20 shipped CONU...

21 Sep 2020

Views: 84


Wanted Wanted A Pair of Fork Arm for C-14

By: hyunkookcho Location: Korea(South)

I am looking for a fair of fork arm for C-14. Cast Aluminum (old style). Without hub. Tangent arm prefered. Hyunkook...

03 Nov 2020

Updated: 04 Nov 2020

Views: 348


16" Starfinder: Free Tube, Mirror Cell (no mirror), & Trim Piece

By: pmoat Location: 07921

*Awaiting Pickup* I've been trying to give this away because I can't bring myself to cut it up and throw it away. If...

25 Feb 2020

Views: 156


Wanted 5" OD Aluminum Tubing

By: dan boyar Location: Boynton Beach, FL

Looking for an 18-20" long 5" OD aluminum tube for a rich field scope project. Also looking for an old Edmund or Jae...

19 May 2017

Views: 406


Wanted Wanted: 4-6" Aluminized Optical Flat

By: Tucker512 Location: Tucson, AZ

Looking for a good quality optical flat in the 4-6" diameter range that is aluminized for use as an autocollimation m...

24 Aug 2017

Updated: 25 Aug 2017

Views: 292


Wanted Wanted - 11" mirror

By: scott50 Location: New York

Looking for an 11" mirror with a good figure to build the largest possible travel scope I can fit into a carry-on sui...

25 Apr 2021

Views: 42


Wanted 70mm (2.75") Diagonal/Secondary Mirror

By: Taosmath Location: NM 87571

Looking for a diagonal mirror for my latest ATM project. Preferred size is 70mm minor axis (2.75 ") but there's a li...

23 Oct 2017

Views: 229


Wanted looking for a 3.1" secondary

By: paul Location: Pa

Hello, I'm looking for a 3.1" secondary Thank you Paul

19 Jan 2019

Views: 229


Wanted Small Novak-style Diagonal Holder

By: mike welsh Location: NE Illinois

Looking for diagonal holder for small mirror (about 1" m.a., 1.3" max) to fit Ken Novak style spider. If there's a mi...

15 Jan 2018

Updated: 15 Aug 2018

Views: 488


Wanted EQ Platform for 0º Latitude

By: Adun Location: Miami

I'm looking for someone who can build an equatorial platform for me. My dob is a 10" skywatcher dob (I can provide d...

12 Aug 2018

Views: 265


Wanted NEEDED: 16” inside diameter steel or fiberglass 4-5 ft length

By: MDearingJaxFL Location: Needed in Jax, FL

I need either steel or fiberglass 16” inside diameter tube 4-5” long to build a RC astrograph. Would ship to 32073. U...

01 May 2018

Updated: 02 Feb 2020

Views: 739


For Sale 10" ID Yazoo Mills Tube for Reflector Build (Atlanta, GA)

By: Tim C Location: Marietta, GA

**Moderator - please bump if possible** **FREE TO A GOOD HOME** This is a Yazoo Mills Heavy-Duty Kraft mailing tube...

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