Dobsonian -Telescopes:

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Wolfgang Rohr Dobson with LOMO mirror 15" f/5 380 mm f/1900 mm ) , secondary mirror ( L/10 PV wavefront ) diameter small axis 78 mm = 20 % shading , tube diameter ca 470 mm, , tube length ca 2000 mm, 2" JMI focuser with reduction. The Dobson with the high quality LOMO mirror got a hard paper tube. This Dobsonian was Wolfgang Rohr's favorite, because he had to build a vertical I have installed 18 small ball bearings for the vertical rotation. These guarantee me a light and noiseless run. On 07. January 2007 Wolfgang Rohr measured the optics as follows : 532 nm ( green ) P.t.v. 0,174 ( 1/5.7 ) , RMS 0,034 ( 1/29.3 ) , Strehl 95.5 % . a detailed description can be found here > http://r2.astro-foren.com/index.php/de/11-beitraege/03-newton-systeme-und-verwandte-fragen/48-drei-hochwertige-dobsons The Dobsonian can not be shipped, the given price is a pickup price at Mr. Rohr in Hassfurt/ Germany

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.
4890.00 €
Delivery date : 2-3 days
 
 
Orion SkyQuest XT12i IntelliScope - 12" f/5 Dobsonian Telescope with Object Locato; neve rused, no longer original püacking, pick up only ♦ Dobsonian Telescope with 2" Crayford focuser and reducer to 1,25" ♦ 8x50 Finder ♦ IntelliScope Computer with object locator

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.
1500.00 €
Delivery date : 2-3 days
 
 
MAG 1 Instr. Portaball Dobson 12.5" F/4.8, approx. 20 years old New price at that time complete incl. customs: 8800€. And here are the specifications: Secondary diameter 2.14" (54.3mm) obstruction 17% Mirror diameter 12.5" so 317.5mm at 1524mm focal length f/4.8 , edge thickness 55 mm Early Portaball sphere still made of aluminum, after a short time it was already changed to GRP. Self-made 9-point main mirror cell made of aluminum with ball heads and integrated fan Holes in the ball for free airflow Hat made of CFK with aluminum rings reinforced inside and outside to carry the 2" bino with heavy eyepieces CFK truss tubes with ball heads Shortened 2" Feather Touch lightweight Riegel Quickfinder Antares secondary with 1/30 wave PV Main mirror from Galaxie Optics with Orion UK Hillux mirroring ( 2 years old ) in February 2020 with excellent optical quality Batteries housed in the sphere as counterweight Small cross fan to blow away the warm air layers above the mirror surface when observing. and Original Portaball equatorial platform The somewhat slippery brass roller covered with hard rubber for a perfect grip Hand control box for northern and southern hemisphere and fine speed adjustment Info on the side power connector : The two sockets are for charging, red plus, black minus :-) You can also tap power there, e.g. for a 12V hair dryer to defrost the secondary mirror. The rotary switch is for switching on the small cross-flow fan, by turning the knob you can adjust its speed continuously.

Item condition: used, but with visible cosmetic markings

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.
3350.00 €
Delivery date : 2-3 days