Optics & Spareparts :

Ohara glass FPL53 92mm diameter

Item condition: new and original packed

Schott N-BK7 high precision plane polished optical windows 105 mm diameter, 10 mm thickness with Zygo interferogramm from front and back side. See Testsample attached

Item condition: new and original packed

Schott N-BK7 high precision plane polished optical windows 135 mm diameter, 15 mm thickness with Zygo interferogramm from front and back side, see test sheet sample of Nr.3

Item condition: new and original packed

Schott N-BK7 high precision plane polished optical windows 160 mm diameter, 17,5 mm thickness with Zygo interferogramm from front and back side. Here we show 1 test sample

Item condition: new and original packed

GSO Mirror Set for Self-Construction of a 16" f/8 RC Telescope The mirror set consists of a hyperbolic primary mirror and a hyperbolic secondary mirror for the construction of a Ritchey-Chretien telescope. The main mirror has small shell fractures around the center hole, but these are in the shadow of the secondary mirror aperture tube and thus have no negative optical influence. Main mirror: diameter 400 mm bore 120 mm, edge thickness 44 mm, center thickness 40 mm, weight 10.75 kg ; secondary mirror diameter 176 mm with edge thickness 18 mm , weight 1 kg ♦ With the mirror set you can build an RC telescope with 406 mm aperture and 3248 mm focal length. ♦ The set consists of primary mirror and secondary mirror without mechanical accessories ♦ The mirrors are made of quartz glass (similar to Zerodur) for stable focus position. ♦ 99% reflectivity on main and secondary mirrors with a quartz protective layer

Item condition: used, but with visible cosmetic markings

High quality Antares elliptical secondary mirror 46 mm small axis with 10 mm thickness

Item condition: new and original packed

High quality elliptical plane mirror small axis 48 mm, thickness 12 mm

Item condition: new, but not original packed

Orion parabolic mirror 150mm f/5 L/10 surface

Item condition: new, but not original packed

Quarz flat window 315mm diameter, 20mm thickness, small central hole, unknown quality, incl. cell , made at the University of Kiel in Germany

Item condition: used Item with possible small cosmetic deffect, but every function works perfect

102 mm F/5 2-Linser achromatical Objective, lens in cell, fully multicoated

Item condition: new, but not original packed

Tube for LZOS 100/8 with case, 2.5" focuser, handle, vixen dovetail, finder shoed, adapter 1.25"

Item condition: new and original packed

Tube for LZOS 105 mm F/6.2 Apo with case, 2.5" focuser, handle vixen dovetail, finder shoe, adapter 1.25"

Item condition: new and original packed