Just stumbled upon this super guide to what thread size is used for different filters, etc. https://agenaastro.com/astronomy-threads-explained.html
Don't know any astronomy hobbyist who hasn't bumped into thread incompatibility problems explained in this great article.
Pete
Machined threads for telescopes explained
Re: Machined treads for telescopes explained
Very informative guide, Pete. Thanks for posting it. Very useful.
Tom
Tom
Tom H
Weeks turn into years, how quick they pass
And all the stars that never were
Are parking cars and pumping gas.
Weeks turn into years, how quick they pass
And all the stars that never were
Are parking cars and pumping gas.
Re: Machined treads for telescopes explained
Pete this is not the first time I have come across this piece of information.As you mentioned and as I have found out,Can be very useful for matching equipment up. In most cases it can be after the fact that a buyer finds out that things don't fit. 
JerryT
Celestron eq5 advanced series goto with gps
Unitron 3 inch eq mount with motor
Mead 90 mm refractor
Celestron Omni 150
Mead lxd55 AR5 refractor
"illagitami non carborundum Uncle Nick '49
Celestron eq5 advanced series goto with gps
Unitron 3 inch eq mount with motor
Mead 90 mm refractor
Celestron Omni 150
Mead lxd55 AR5 refractor
"illagitami non carborundum Uncle Nick '49
Re: Machined treads for telescopes explained
Agreed Pete. Manish has a great site. Very informative.
When I buy astro-gear I look to his site 1st. Manish and I were Antares distributors when ClearVue Optics hung out its shingle. I recently bought my ZWO camera from him. It shipped priority mail and it was shipped that day. Highpoint, and OPT didn't have the camera I bought in stock. His website said "18 on hand". Great guy and stands behind his products.
When I buy astro-gear I look to his site 1st. Manish and I were Antares distributors when ClearVue Optics hung out its shingle. I recently bought my ZWO camera from him. It shipped priority mail and it was shipped that day. Highpoint, and OPT didn't have the camera I bought in stock. His website said "18 on hand". Great guy and stands behind his products.
Clear skies,
Mark
iOptron CEM25P w/ Tri-pier
CGEM DX
LXD750 w/ CDS #1697
LXD75 w/ #497 autostar Hypertuned
Antares 8" f/5 Newt
Antares 4" f/15 "Vixen Spec" long focus refractor
Orion 4" f/7 ED refractor
Astro-Tech 65mm Quad APO
and so much more
Mark
iOptron CEM25P w/ Tri-pier
CGEM DX
LXD750 w/ CDS #1697
LXD75 w/ #497 autostar Hypertuned
Antares 8" f/5 Newt
Antares 4" f/15 "Vixen Spec" long focus refractor
Orion 4" f/7 ED refractor
Astro-Tech 65mm Quad APO
and so much more
Re: Machined treads for telescopes explained
Thanks, Pete. Very useful reference.
Like Mark, I too have always had a great experience when dealing with Agena Astro. One time I ordered something and Manish somehow knew that I was ordering the wrong thing and contacted me helped me figure out a better solution!
Like Mark, I too have always had a great experience when dealing with Agena Astro. One time I ordered something and Manish somehow knew that I was ordering the wrong thing and contacted me helped me figure out a better solution!
Andy
Re: Machined treads for telescopes explained
I like Agena too, free shipping for my camera- highpoint not so
Bruce D