Lockwood Custom Optics
Posted 03 January 2013 - 02:38 PM
This is a 1.7"-thick mirror, from Pyrex. The figure more than meets my standards for correction, polish, and figure of revolution. It has scribed center spots to aid with precise centering of a ring, triangle, etc.
Price is $1,200 including enhanced aluminum coating and shipping within the US.
Please send me an email (mirrors at loptics dot com) if you are interested or have questions.
Posted 12 January 2013 - 09:24 PM
Posted 07 July 2013 - 04:40 PM
Posted 07 July 2013 - 09:26 PM
Posted 08 July 2013 - 06:33 AM
Posted 09 January 2014 - 03:06 PM
Posted 17 January 2014 - 01:20 PM
Contact Rick Singmaster at (620) 638-4743 if you're interested in the telescope. I don't recommend waiting, these usually sell fairly quickly.
The 22" f/3.3 is, for most, a one-step telescope - that is, you only need about one step to observe at zenith, and an observing chair for much of the rest of the sky! Some more information is available here:
Lockwood Custom Optics
Posted 06 February 2014 - 10:36 PM
Yes, I enjoy it very much, and John Pratte of JPAstrofast.com has built a 20" f/3 for a client, too. (Never considered the possibility of an incontinent Lord Rosse.)
That is my dream scope right there. 20 inches and seated - Lord Rosse would wet himself.
By the way, the 22" f/3.3 was sold about a week ago.
Posted 07 February 2014 - 12:23 AM
Posted 13 February 2014 - 03:48 PM
Mirror #1 is f/5.8, focal length = 46.5". It is a molded blank, ~1.3" thick Pyrex, with a good anneal. The back has not been ground, but is fairly flat and smooth out of the mold, as is the edge.
Mirror #2 is f/5.9, focal length at 47". It is also 1.3" thick, with good anneal. The back is fairly smooth and flat, but there is a raised rim around the edge about 1/8" inch high and 1/4" wide. (In most cells this will not interfere with anything.) The edge of the mirror tapers - the mirror is slightly wider at the front than the back. With proper edge support, this is not an issue.
I have good 1.5" m.a. flats for both of them. I am selling a primary and a secondary as a set, each set for $1,000 including OMI coating and shipping.
Both have precisely centered center spots that are scribed into the glass itself and are permanent. This makes adding an adhesive spot or centering a laser beam on the mirror quite simple.
Email me at the address on my company info page if you are interested. I check Yahoo email and CN PMs occasionally too, but prefer email.
These are first come, first serve, and I don't plan to make any more of this size for a while. They are boxed and ready to ship.
Posted 26 June 2014 - 07:47 AM
Clear skies, Alan
Posted 08 July 2014 - 12:47 PM
(reply not necessary)
Posted 08 July 2014 - 06:17 PM
Posted 08 July 2014 - 08:46 PM