{"id":2819,"date":"2014-09-10T14:38:24","date_gmt":"2014-09-10T14:38:24","guid":{"rendered":"https:\/\/www.geoptik.com\/?product=nadirus-16"},"modified":"2023-01-20T14:36:30","modified_gmt":"2023-01-20T14:36:30","slug":"nadirus-16","status":"publish","type":"product","link":"https:\/\/www.geoptik.com\/en\/prodotto\/nadirus-16\/","title":{"rendered":"Nadirus 16″"},"content":{"rendered":"

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Dobsonian truss telescopes 16″ (404 mm)<\/p>\n

The project Nadirus is the result of cooperation with reliable partners and the special help of the Amadori study design\u00a0 www.amadoridesign.com .
\nEvery part of this Dobson has been designed and engineered taking into account a variety of technical and practical aspects. With an extremely curvy design we can offer an excellent instrument produced in Italy with the best Italian style. The quality of materials is the best available on the market and technical solutions makes it absolutely unique.<\/p>\n

The graphic motif that characterizes the NADIRUS Dobson is the design of the wheel that identifies in the intersection of 6 circles of different diameters, and some suitably radiused corners, that will surround the profile. These curves are repeated on the body of the base with the aim of lightening.<\/p>\n

Even the base of the rotating system has been lightened with a pattern, unique, reminiscent of the blades of a fan.\u00a0\u00a0 Attention to the design, technique and mechanics, in the name of practicality which has been the dominant theme of this project.<\/p>\n

We privileged a structure in lamellar beech wood which makes it stable and lightweight. In particular, it has been taken care of the upper cylinder housing is where the spider secondary mirror holder which was made \u200b\u200bof birch plywood crossed beams that give the piece a unique strength and stability. Although the primary mirror cell is made of birch plywood with a support system where the 9-point floating mirror rests on discs of natural cork foam.<\/p>\n

The entire structure is<\/span> varnished<\/span> for outdoors<\/span><\/span>.<\/p>\n

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Is available also the only<\/span> wooden structure<\/span> without<\/span> mirrors and<\/span> focuser<\/span>. You will find it<\/span> in the section “<\/span>Dobson –<\/span> mounting kit<\/span>“<\/span> code.10A004<\/div>\n<\/div>\n

Many mechanical and other technical details has been studied that confirming the right choice with your purchase and will give you the evidence of the high quality, taking you in the best condiction for your astronomical observations.<\/p>\n

TECNICAL SPECIFICATION<\/strong><\/span><\/span><\/p>\n

Type\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0 \u00a0 \u00a0 –\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 DOBSON TRUSS
\nCode\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0 \u00a0\u00a0 –\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 10A204
\nEAN13-GS1 \u00a0 \u00a0\u00a0 –\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0 8058450361884
\nOptical design\u00a0 –\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0 \u00a0 Newtonian
\nClear aperture\u00a0 –\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0 \u00a0\u00a0 404 mm (16\u201d)
\nFocal length\u00a0\u00a0 \u00a0\u00a0 –\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 1815 mm
\nFopcal ratio\u00a0\u00a0\u00a0 \u00a0\u00a0 –\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0 \u00a0 f\/4.5
\nSecondary mirror –\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0 88 mm (3.5 inch)
\nMount type \u00a0 \u00a0 \u00a0 – \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0 Wood Dobsonian
\nPrimary cell \u00a0 \u00a0 \u00a0 –\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0 18 point aluminium maschined
\nSecondary holder\u00a0 –\u00a0\u00a0 \u00a0 \u00a0 Hight precision aluminium assembly
\nFocuser \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 – \u00a0 \u00a0 \u00a0 Dual speed rack & pinion 2″ + 1,25″ low profile.
\nAlignment \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0 – \u00a0 \u00a0\u00a0 Manual
\nFinder \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 – \u00a0 \u00a0\u00a0 Not included
\nRadius altitude bearings diam. –\u00a0 540 mm
\nTruss tubes\u00a0 – Powder painted alu.tubes with plastic balls diam.20
\nAlt movement \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 – \u00a0\u00a0 By teflon
\nAzimuth movement\u00a0 – \u00a0 By teflon
\nMirror box weight\u00a0\u00a0\u00a0\u00a0 –\u00a0 10.6 Kg.
\nRocker box weight \u00a0\u00a0 –\u00a0 8.4 Kg.
\nCage with focuser weight\u00a0 – 4 Kg.
\nTubes weight\u00a0\u00a0 (8) \u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0 – 4.3 Kg.
\nTotal assemble telescope weight –\u00a0 43,6 Kg.
\nHeaviest part \u00a0 –\u00a0 35 Kg.
\nEyepiece height (zenith) –\u00a0 1720 mm<\/p>\n

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Primary mirror<\/span>: BK7<\/span> with<\/span> correction<\/span> of<\/span> greater than<\/span> 1\/5<\/span> lambda<\/span> (PTV<\/span>), 91% reflectivity<\/span> with protective treatment<\/span> (SiO2)<\/span>
\nSecondary mirror<\/span>: 91% reflectivity<\/span> with protective treatment<\/span> (SiO2)<\/span>, correction<\/span> of more than<\/span> 1\/4<\/span> of<\/span> the lambda<\/span> (PTV<\/span>)<\/span><\/em><\/span><\/p>\n

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