Apochromatical Refractors, 2-lens, opt. Tube:

Takahashi Sky 90II f/500 mm Fluorite Apochromat Serial No. SV07067. Model II means the lens mount is centerable. I have currently centered the optics cleanly at 250 focal length. A beautiful compact 2 lens Fluorite Apo refractor. I recommend those who also want to use it for higher magnifications, e.g. for planetary observation and double stars, to buy the optional Q-Extender 1.6 also offered here. Takahashi has calculated the Sky 90 with Q-extender 1.6 x as an optical unit. In combination with this Q-Extender, the Sky 90 achieves the spherical and chromatic high correction of a longer focal length Takahashi FS refractor. The Q-Extender is shown here, but is not included in the scope of delivery, it can be purchased second-hand for Euro 300. I also offer the 2" to Q-extender adapter as an option for Euro 60. I offer the 1.252 Takahashi eyepiece clamp optionally for Euro 90. The pictured Vixen rail is optionally available for Euro 35. The Sky 90 II with 2" adapter and tube clamp costs Euro 1,890. The package Sky 90 II + tube clamp + 2" eyepiece holder + Q-extender 1.6 x + 2" adapter for Q-extender + 1.25" eyepiece holder + Vixen rail costs Euro 2.375.-

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

Wichtiger Hinweis zur Mehrwertsteuer:
Dieses Angebot unterliegt mit Ausnahme der Versandkosten gemäß § 25a UStG der Differenzbesteuerung, weshalb auf den angebotenen Artikel keine Umsatzsteuer erhoben und ausgewiesen wird.

TeleVue TV-60 OTA - Apo 60/360 mm - optical tube ; Aperture: 60 mm Focal length: 360 mm Objective: ED apochromat, double lens Tube length: approx. 250 mm Maximum actual field: 4.3° (with matching eyepiece) Tripod connection: 1/4" photo tripod thread, adjustable Eyepiece connection: 1.25" Tele Vue 60 mm Apo - aperture 60 mm - focal length 360 mm A compact high quality apochromat for astronomy, photography and nature observation. The compact apo is ideal for stargazers, nature observers and photographers who are looking for a powerful all-round spotting scope. The fast apochromatic optics provide an image that is virtually free of colour aberration. This makes observation and photography possible at a very high level. Tripod mount: The Tele Vue 60 mm apo has a flexible tripod mount with 1/4" tripod connection. The shifting mechanism allows you to balance the telescope. Focusing - two-stage adjustment: With the sliding tube, a particularly wide focus adjustment range and a very fast coarse adjustment is possible. The fine adjustment is made by a particularly precise rotating focus. The eyepiece or the camera do not rotate.

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

Wichtiger Hinweis zur Mehrwertsteuer:
Dieses Angebot unterliegt mit Ausnahme der Versandkosten gemäß § 25a UStG der Differenzbesteuerung, weshalb auf den angebotenen Artikel keine Umsatzsteuer erhoben und ausgewiesen wird.

ED Apo 70 mm f/420 mm, F/6 with carbon style tube, 2" focuser with micro reduction, sliding dew cap, Bartinov mask, 3 D print holder for ZWO guide scope, 2" field flattener, carrying bag, all in top condition

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

Wichtiger Hinweis zur Mehrwertsteuer:
Dieses Angebot unterliegt mit Ausnahme der Versandkosten gemäß § 25a UStG der Differenzbesteuerung, weshalb auf den angebotenen Artikel keine Umsatzsteuer erhoben und ausgewiesen wird.

Vixen Fluorite FL 102/900 , with very high quality optics. The original tube has been improved as follows: the Vixen focuser has been replaced by a rotatable Crayford focuser with micro reduction. The Vixen tube clamps were replaced by black CNC tube clamps. The small Vixen finder was swapped for a high quality Explore Scientific 50 mm bel. finder. The tube was shortened so that it can be used with a binocular attachment. The tube and dew cap were painted in Porsche signal yellow, the lid and transition to the dew cap were painted in black. Thus, the tube was upgraded to meet the high optical quality.

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

Wichtiger Hinweis zur Mehrwertsteuer:
Dieses Angebot unterliegt mit Ausnahme der Versandkosten gemäß § 25a UStG der Differenzbesteuerung, weshalb auf den angebotenen Artikel keine Umsatzsteuer erhoben und ausgewiesen wird.

Hardcase for Takahashi NSV 102

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

Wichtiger Hinweis zur Mehrwertsteuer:
Dieses Angebot unterliegt mit Ausnahme der Versandkosten gemäß § 25a UStG der Differenzbesteuerung, weshalb auf den angebotenen Artikel keine Umsatzsteuer erhoben und ausgewiesen wird.

NIKON 100 mm f/1200 mm ED Apo opt. Tube with 50 mm finder. The NIKON called ED use NIKON made Special Glas which result in a colorcorrection similar perfect as you see in Zeiss APQ 100/1000. Case does not excist aylonger and is not included the delivery The optics of this specimen are simply perfect. There is no difference between intrafocal and extrafocal and the optics are extremely smooth. This is a real laboratory optic or also called reference optic. Included in delivery are : - optical tube - Tube clamps with Vixen rail - NIKON 50 mm viewfinder illuminated - original NIKON adapter up to 24.5 mm - APM 2" eyepiece holder available against surcharge are : - original NIKON 24.5 mm zenith prism - original Herschel wedge

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

Wichtiger Hinweis zur Mehrwertsteuer:
Dieses Angebot unterliegt mit Ausnahme der Versandkosten gemäß § 25a UStG der Differenzbesteuerung, weshalb auf den angebotenen Artikel keine Umsatzsteuer erhoben und ausgewiesen wird.