{"product_id":"ritchey-chretien-pro-rc-304-2432-ota-de-armazon-ligero","title":"Ritchey-Chretien Pro RC 304\/2432 Light-Weight Truss OTA","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cb\u003eOmegon RC Truss Carbon Telescope: Quartz glass honeycomb primary mirror for faster thermal equilibrium.\u003c\/b\u003e\u003cbr\u003eIs astrophotography your passion, and are you looking for the right telescope for your observatory? Richey-Chretien telescopes combine powerful mirror optics with an almost perfect image. Two hyperbolic mirrors ensure a wide, illuminated, coma-free field of view in a compact design. The result: perfect stars right to the edge. That's why countless professional observatories and institutions rely on this system.\u003c\/p\u003e\n\u003cp\u003eOpt for professional technology for your own observatory too! Omegon RC telescopes are so well-balanced that they even fit into smaller observatories.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eAdvantages at a glance:\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHyperbolic mirrors: extremely sharp image, large field of view without correctors.\u003c\/li\u003e\n\u003cli\u003eQuartz mirrors: for stable focus, no need to refocus, the image remains sharp.\u003c\/li\u003e\n\u003cli\u003eSuitable for large-format CCD cameras: illumination of approx. 60 mm.\u003c\/li\u003e\n\u003cli\u003eCarbon truss tube: system reinforced with carbon tube.\u003c\/li\u003e\n\u003cli\u003eHigh reflectivity: 92-94% dielectric coating for bright, high-contrast astronomical observations and photographs.\u003c\/li\u003e\n\u003cli\u003eFast cooling thanks to its open design.\u003c\/li\u003e\n\u003cli\u003eHigh-power electric fans: minimize tube seeing and accelerate optical cooling.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb\u003eHyperbolic mirror for improved image quality\u003c\/b\u003e\u003cbr\u003eRC telescopes are equipped with hyperbolic primary and secondary mirrors, unlike spherical mirrors found in Schmidt-Cassegrain systems. The RC design is carefully crafted: the optical tube offers a wider field of view and significantly reduced optical aberration.\u003c\/p\u003e\n\u003cp\u003eFlawless image quality over a larger field of view: this is the purpose of these telescopes. That's why they are the preferred choice for astrophotography. And that's also why RC optical tubes are ideal for CCD cameras, meaning you can capture sharp images right to the edge without the need for a corrector. This allows you to capture beautiful snapshots of the sky.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eEspecially useful in a wider spectral region\u003c\/b\u003e\u003cbr\u003eRC telescopes do not have any lenses in the light path. This is a great advantage because it avoids refraction effects, such as chromaticism or dispersion. The useful spectral region beyond visible light is wider. This allows you to explore the interesting world of ultraviolet and infrared rays with your camera.\u003c\/p\u003e\n\u003cp\u003eThe primary mirror of this RC telescope variant is made of high-quality quartz glass and has a honeycomb structure with less mass. This allows for rapid thermal equilibrium, which positively impacts the quality of astrophotographs. An advantage for all advanced amateur astronomers who want professional results.\u003c\/p\u003e\n\u003cp\u003eBoth mirrors of the telescope have a 92-94% reflective coating for clearer, higher-contrast images. Compared to \"normal\" telescope mirrors with an 88% coating, this ensures up to 17% more light.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eGreater observing agility: fan for the primary mirror\u003c\/b\u003e\u003cbr\u003eOnly a faint, imperceptible hum, but with a gigantic effect: the integrated 12V fan allows the primary mirror to cool up to 50% faster, so your telescope can reach optimal image quality much sooner. No more long waits!\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eOpen-design carbon optical tube\u003c\/b\u003e\u003cbr\u003eMost professional telescopes have open tubes. This telescope also benefits from the advantages associated with this design. Carbon trusses are rigid, lightweight, and very resistant to temperature changes. In fact, that's another reason why their focus is so stable. Air circulation is better in open tubes and prevents the creation of a microclimate inside.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eLarge unhindered aperture: 3\" focuser\u003c\/b\u003e\u003cbr\u003eThe rear end is extremely important. A 3\" linear Crayford focuser with ball bearings provides enough space to illuminate even the widest fields of view without vignetting. This hybrid between Crayford and rack-and-pinion combines the simplicity of Crayford focusers with the stability of a good rack-and-pinion focuser.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAlways perfect alignment with your observing target: fully rotatable focuser.\u003c\/li\u003e\n\u003cli\u003e2\" and 1.25\" adapters with integrated compression ring.\u003c\/li\u003e\n\u003cli\u003eFine focusing: 1:10 reduction for minimal focus adjustment.\u003c\/li\u003e\n\u003cli\u003eGraduated scale: for quickly retrieving focus.\u003c\/li\u003e\n\u003cli\u003eHigh stability: camera support on the optical axis without tilting for a sharp image.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb\u003eIndividually adjustable focuser\u003c\/b\u003e\u003cbr\u003eA total of 6 collimation screws allow you to precisely adjust this 3\" focuser in your mirrored optical tube. This prevents unwanted slippage, keeping the eyepiece or your camera always on the optical axis. Classy: this focuser has a consistent 3\" diameter, which is not always a given, as many similar focusers narrow towards the eyepiece side.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eBetter image quality than SC telescopes\u003c\/b\u003e\u003cbr\u003eRC telescopes are essentially completely different from SC or Maksutovs. They are open systems without a corrector plate that adapt to ambient temperature much faster than SC telescopes. Additionally, by lacking a plate at the front, these telescopes capture clearer images without the risk of reflections. Ritchey-Chrétien systems are the most corrected dual-mirror telescopes available. The sharpness of the field of view, including the periphery, is impressive. So it's no wonder that practically all large research telescopes in professional observatories use this type of optical tube.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eAnd now within everyone's reach\u003c\/b\u003e\u003cbr\u003eThe manufacture of hyperbolic mirrors is both a science and an art. Until a few years ago, RC telescopes were among the most expensive in the world and were only found in international research institutions. However, today this technology is also affordable for experienced amateur astronomers.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eScope of delivery:\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eOmegon RC-Truss OTA\u003c\/li\u003e\n\u003cli\u003e3\" mounting rail\u003c\/li\u003e\n\u003cli\u003eFan with battery box\u003c\/li\u003e\n\u003cli\u003e3\" focuser\u003c\/li\u003e\n\u003cli\u003e3 extension tubes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Omegon","offers":[{"title":"Default Title","offer_id":53581585318231,"sku":"75490","price":4950.41,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0552\/6198\/6860\/files\/68060_1.jpg?v=1779016034","url":"https:\/\/astrotelescopios.com\/en-efta\/products\/ritchey-chretien-pro-rc-304-2432-ota-de-armazon-ligero","provider":"Astro Telescopios","version":"1.0","type":"link"}