{"product_id":"ritchey-chretien-pro-rc-304-2432-truss-ota","title":"Ritchey-Chretien Pro RC 304\/2432 Truss OTA","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cb\u003eOmegon RC Truss Carbon Telescope: Professional Astrophotography for Your Observatory\u003c\/b\u003e\u003cbr\u003eAre you passionate about astrophotography and looking for the perfect telescope for your observatory? Ritchey-Chrétien telescopes combine a large optical mirror tube with almost perfect image quality. A pair of hyperbolic mirrors provide a wide, well-illuminated field of view free from comatic aberration, all in a compact format. The result: perfect stars right up to the edge of the image. This is why it is the preferred system for numerous professional observatories and institutes.\u003c\/p\u003e\n\u003cp\u003eChoose professional technology for your private observatory too! Omegon RC telescopes are so well balanced that they can be used without problems even in the smallest 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 images and a wide field of view without correctors\u003c\/li\u003e\n\u003cli\u003eQuartz mirrors: greater focus stability without the need for readjustments for a consistently sharp image\u003c\/li\u003e\n\u003cli\u003eCompatible with large format CCD cameras: illumination of approx. 60 mm\u003c\/li\u003e\n\u003cli\u003eCarbon Truss optical tube: rigid open carbon lattice system\u003c\/li\u003e\n\u003cli\u003eHigh reflection: dielectric coating with 92-94% reflection for clear, high-contrast observations and astrophotos\u003c\/li\u003e\n\u003cli\u003eFast cooling thanks to the open design\u003c\/li\u003e\n\u003cli\u003eHigh-performance electric fan: minimizes tube \"seeing\" and accelerates cooling\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb\u003eHyperbolic mirror for better image quality\u003c\/b\u003e\u003cbr\u003eRC telescopes are equipped with hyperbolic primary and secondary mirrors. Not with spherical mirrors, like Schmidt-Cassegrain systems. The RC design is very carefully crafted: the optical tube offers a wider field of view and considerably less optical aberration.\u003c\/p\u003e\n\u003cp\u003eImpeccable image quality in 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, which means you can take sharp photos right to the edge without a corrector. This way you can 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 beam path. This is a great advantage, because refractive effects, such as chromaticity or dispersion, are avoided. The useful region of the spectrum beyond visible light is wider. Thus, you can delve into the interesting world of ultraviolet and infrared rays with your camera.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eQuartz primary mirror\u003c\/b\u003e\u003cbr\u003eIf you have experience in astrophotography, you have probably experienced the focus getting misaligned during long exposure captures. It's very annoying! The advantage of this model is that it has 2 quartz mirrors. It barely undergoes thermal expansion, so it produces fantastic images and maintains focus throughout the night.\u003c\/p\u003e\n\u003cp\u003eBoth mirrors of the telescope have a 92-94% reflective coating for clearer, higher contrast images. Compared to mirrors in \"normal\" telescopes, with an 88% coating, this guarantees up to 17% more light.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eGreater agility of observation: fan for the primary mirror\u003c\/b\u003e\u003cbr\u003eOnly a slight, imperceptible hum, but with a gigantic effect: the integrated 12V fan can cool the primary mirror 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 are open-tube. Well, 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 is another reason why its focus is so stable. Air circulation is better in open tubes and prevents a microclimate from forming inside.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eLarge unhindered aperture: 3\" focuser\u003c\/b\u003e\u003cbr\u003eThe back 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 observation target: fully rotatable focuser\u003c\/li\u003e\n\u003cli\u003e2\" and 1.25\" adapters with integrated compression ring\u003c\/li\u003e\n\u003cli\u003ePrecision focusing: 1:10 reduction for minimal focus adjustment\u003c\/li\u003e\n\u003cli\u003eGraduated scale: to quickly regain focus\u003c\/li\u003e\n\u003cli\u003eGreat 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 adjust this 3\" focuser with maximum precision in your optical mirror tube. This prevents unwanted slipping, keeping the eyepiece or your camera always on the optical axis. Class: this focuser has a uniform 3\" diameter, which cannot always be taken for granted, as many similar focusers narrow towards the eyepiece side.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eBetter image quality than with SC telescopes\u003c\/b\u003e\u003cbr\u003eRC telescopes are, in essence, completely different from SC or Maksutov. They are open systems without a corrector plate that adjust to ambient temperature much faster than SC telescopes. In addition, by not having a plate on the front, these telescopes capture clearer images without risk of reflections. Ritchey-Chrétien systems are the most highly corrected double-mirror telescopes available. The sharpness of the field of view, including the edge, 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 a science and an art. Until not many 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":53581585350999,"sku":"53813","price":4112.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0552\/6198\/6860\/files\/53813_1.jpg?v=1779016037","url":"https:\/\/astrotelescopios.com\/en-us\/products\/ritchey-chretien-pro-rc-304-2432-truss-ota","provider":"Astro Telescopios","version":"1.0","type":"link"}