Jump to content

  •  


Broadhurst & Clarkson/Kufeld 6” f/12 Brass Refractor Roland Christen Lens For Sale

Price - $8,500.00

Ad Number: 201169

Posted: 13 Mar 2020

Please sign in to message advertiser

This incredible scope was purchased by me from Telrad inventor & club member Steve Kufeld’s estate after he suddenly passed away in 1997. Old Timers of RTMC will remember that Steve brought this scope several times to the event. He had it at his house in Pine Mountain Club and would roll it out of his living room onto his patio for observing. Steve Kufeld commissioned the scope from historic Broadhust and Clarkson of London, England. Everything is in the style of a late 1800’s instrument. Steve found that the original Broadhurst & Clarkson achro lens was not of the quality he desired, and commissioned Roland Christen to make a replacement APO lens in 1981, it was delivered in 1982. I have comprehensive paperwork on the lens. Roland made this lens in his home workshop, before he opened a shop. The replacement triplet lens is superb and performs equally well as the several 6” f/12 AP SuperPlanetary scopes I have observed with. Speculation on my part, but this lens may have been the basis for the SuperPlanetary, as a tremendous amount of design work must have gone into it, and it was greatly successful. Instrument has interesting features such as digital setting circles and a built in Telrad base! The ALTAZ function is smooth – push in AZ, use the wheel for ALT. There is a cool rope loop for faster ALT adjustment, (needs replacement). Scope is functional but could use a little TLC, especially if you want to brighten the brass. Lens is in great shape. B & C mirror diagonal is 1.25” performs great and coating is good - it is removable. The brass tube has a well textured flat black coating on the interior. A great performing unique and historic instrument – to say it is an eye-catcher is an understatement. Stunning views of Mars were obtained during the excellent Mars apparitions in the early 2000's. It includes matching rings for EQ mounting, a very cool white light solar filter & Telrad. This telescope is discussed in the article ‘An Interview with Steve Kufeld, Inventor of the Telrad’ by Barry Kawaguchi, posted on AM. Pedestal and yoke are steel and very rigid. Pick Up Only – Very Heavy, does break down to manageable parts though - I'm in the Flagstaff area.

General


  • Condition VG
  • Location Flagstaff, AZ



Advertiser Info



Powered by Classifieds


Cloudy Nights LLC
Cloudy Nights Sponsor: Astronomics