Current Price: $245.00
Buy It Now Price: $245.00
Bids: 0

This is a used objective from a Unitron telescope - great if you've broken a lens or just want a good objective.

It has a bit of dirt and dust but should clean up like new apart from scratches on the plastic where a few shield has been fitted.

Make an offer if you think the price too high.

The information on the web from company7 suggests :

"Objective Lens: Throughout the 1950's and into the 1960's many lens makers offered achromatic telescopes, but no other western bloc nation had a manufacturer that offered a telescope as well made and functional, and with a price as moderate (given the performance) as these made by Nihon Seiko. The Nihon Seiko achromatic refracting telescope objective (front lens) employ an air spaced two lens, one group arrangement. The design derives from the Zeiss E-Objektiv, a refinement of the original doublet achromatic lens that was developed by German optician Joseph von Fraunhofer (b. 6 Mar 1787, d. 7 Jun 1826). This lens employs one element made of BK7 (borosilicate crown) glass precisely matched to work with the SF10 (a high index flint) glass component. In order to attain acceptable performance the focal ratio is f/15 fairly long by todays standards. By the 1920's Zeiss production included E-Objektiv 60mm telescopes similar to this Model 114 complete with gear driven altazimuth mounts, wood tripod, case, and in the customer's choice of either f/14.2 (Telex Codeword Asedabais, No. 511071) and in f/17.5 (Asalven, No. 511071)."

 It looks consistent, but I cant confirm.

Filed under: Eyepieces & Accessories