Secondhand

we have build and very much tested under real sky a high quaity 20" F/8.5 Maksutov Cassegrain ( Rumak Design) , optics made by Santel in Russia, Mechanics made by Matthias Wirth in Germany. The beast is now for sale . It comes with a set of tube clamps, dew cap, 3" Starlight Feather Touch extension, meniscus heater, main mirror vent, 2 maintenance flaps, handles to move tube, and 2 sets of losmandy dovetail holders for large guiding telescopes. The optics are very smooth and have excellent spherical correction. The lens is broadband multi-coated on both sides. The cooling behavior is excellent.

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

16"F/5 Aries Newtonian Telescope with optical window build in observatory class quality, includes tube rotating ring system, mountplates, tube balancing weight system, cooling fans, dew shield, 2" Starlight focuser, Astrosital mirrors, fully broadbandcoated optical window, very small central obstruction of only 15%, interf. Testreport stating above 98 % strehl on system and better than 1/8 wavefront p.t.v.; the telescope performance is Manufactoring cost nowadays about $ 50,000. Total weight about 160 kg

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.

The 130 mm APM-LZOS 3-lens SuperED in a great special package with 3.7" APM focuser. Like new condition with 2-year new device guarantee Scope of delivery: Optical tube 130/1200mm with sliding dew cap APM CNC tube clamps APM 3.7" ZTA focuser with 1:10 reduction, 360° rotatable APM Fast Lock reduction adapter 2" / 1.25" APM 3" mounting rail Adapter 2" / 1¼" with brass clamping ring Test protocol Cover on both sides Carrying handle case

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.

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.

Gemini 41, direct drive Mount with Fs-2 Goto-controller, metal tripod, polarfinder, Stainless Steel tripod, Losmandy dovetail clamp, power supply

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.

Caran d´ Ache Caelograph Alpha 45 FP Limited Edition 120 Pen 2013 Product type: Fountain pen Brand: Caran d' Ache Model: Caelograph Alpha 45 FP Nib / Refill: M / 18K white gold Accessories: With original box and guarantee booklet This is the first time that a writing instrument has been linked to the celestial vault, the laws of astronomy and the history of time. The Caelograph limited edition, created by Caran d’Ache at its Geneva Manufacture, stems from the technical excellence and the taste for original inventions cultivated by the in-house artisans. This ingenious instrument was designed for admirers of science and for all those who take the time to stop for a moment to gaze at the stars at a given time and place. Available in three materials and three basic latitudes, Caelograph is equipped with astronomic position functions that are manually adjustable, like historical instruments for measurement and navigation. A silent show of the constellations adorns the body of the fountain pen and roller pen. The light of the stars is symbolised by night blue Chinese lacquer scattered with silver particles and in some versions, set with diamonds. A rare one-of-a-kind variation designed for a seasoned collector has been created in solid pink gold set with 22 diamonds. Its piston ink pump, housed in a golden barrel, is crowned with a diamond. Born of a sense of poetry and rare technical precision, Caelograph revives our ancestral ties with the stars and their role in the development of science and art. Edition Alpha 18 K white gold Platinum-coated trim Per latitude 45°N Comes with: Caran d'Ache Caelograph Alpha Edition 45 N Fountain Pen Caran d'Ache Caelograph 30ml Ink Caelograph Alpha Compass

Item condition: new, but not original packed

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.

Temma 2 NJP Mount. Large Takahashi wooden tripod including hardware Hand controller. 3 Tak NJP counterweights and custom carrying box. Robin Cassidy saddle. 24vdc power supply. Scopeguard case for the mount. QHY Polemaster Tak adapter (Polemaster camera NOT included) NJP polar scope illuminator. The mount has a few nicks and chips in the paint. The Scopeguard case is well travelled but still very functional. packed shipping weight 85 kg

Item condition: used, but with visible cosmetic markings

Takahashi EM-11 Temma2M with FC-M tripod in excellent conditions. , EM-11Temma2M 's power consumption is very big.....( ~MAX. 5.3A ),but actually I measured, only 0.2~0.3A ( very small).GOTO speed is 150X . If DC24V can be addred, speed will be faster. delivery include: 1, Takahashi EM-11 Temma2M with standard accessories ( weight , H.C BOX ) 2, Takahashi new type rotating base for Tripod 3, Takahashi FC-M tripod 4, Takahashi OTA holder ( for Mewlon 210....etc) 5, AC-DC converter ( AC100V~240V )-----> DC 12V (only) 6, DC-plug 7, 3 Manuals 8, all bolts,tools 9, weight 1 pc 3.7 kg and 1 pc 4.7 kg

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

APM Refractor Telescope Doublet ED Apo 152 f/7.9 OTA with 2.5" focuser and case

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.

Lichtenknecker AK 125 mm f/1300 mm achromat, optical tube, tube clamps, Losmandy rail, 50 mm finder, 2" Vixen focuser with Baader 2" clamp, extension for straight use. The special here the optics is not hard cemented, sondernnern soft cemented, so that you better stresses by high temperature differences can easily bear. Optics are clean and uncoated. For focusing a 2" zenith mirror an 80 mm extension is needed, that means the backfocus is designed for binocular use without glass path corrector. Overall length with dew cap approx. 134 cm, weight complete 8.8 kg. The tube is clean, it has a few small paintsratches.

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.

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.

Flak Binocular D.F. 10x80 Flakglas , Multi-coated lenses and eyepieces, for the age is the binoculars in very good condition. The glass was repainted in this year 2021. The original eyepieces can be unscrewed. We have turned 1.25" screw-in eyepiece adapters for this, so that standard 1.25" astro eyepieces can now be used. The interpupillary distance can be finely adjusted. The alignment is very good. It is rare to find such a 10 x 80 wehrmachtsglas in a such good condition.

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.