![]() Featuring fully multi-coated FPL-51 ED glass optics, a dual-speed Crayford focuser and a carbon fiber optical tube, the Orion ED66 CF Refractor is an amazingly versatile telescope capable of delivering true-color views day or night. However, if you plan on doing any imaging, an APO may be the better choice. Orion ED66 CF Carbon Fiber Refractor Telescope. Big Aperture: Orion ED80T CF Triplet Apochromatic. You can’t afford to have an exposure ruined by vibration. leaving the camera shutter open for many seconds, or even minutes. So, if you only have visual goals, a good doublet may be better for you. Sturdy Astro-imaging requires long exposures, i.e. The downsides are that they cost more to make, so it’s more expensive to buy, triplets take longer to cool down than doublets, and depending on quality, the differences can be marginal. GSO 2' Linear Bearing Crayford Focuser for Refractors - Dual Speed (with 86.4mm Flange) 20 Reviews. The benefits include improved color fidelity, increased sharpness and contrast, and it works far better with camera lenses. GSO 1.25' Crayford Focuser (with 176mm base plate) for Reflectors - Single Speed. Explore Scientific ED80 Essential Edition. Meade Instruments Polaris 130 EQ Reflector Telescope. Orion ED80T CF Triplet Apochromatic Refractor Telescope. Sky-Watcher EvoStar 100ED APO Doublet Refractor. Orion EON 130mm ED Triplet Apochromatic Refractor Telescope. This is because APO lenses, like this model, require more precision, labor, extra materials to produce such as ED (Extra-low dispersion) glass which the ED80T has! Our Best Telescope For Astrophotography At A Glance. You’ll also notice that APO triplet scopes are far more expensive than achromat doublets – a series of two lenses. ![]() While most people find it acceptable for visual purposes, it is unacceptable for imaging. ![]() CA (Chromatic Aberration) is the false color that you would see around a high-contrast target like the moon. I removed the tube from the frame by unscrewing it. Being one to not take things too far, I chose to try CA repair adhesive for mine. It is the engineering Achilless heal of the ED80T CF. In short, it means that you should not need see, or at minimal, color bleeding or fringing. The actual Joint between the CF tube, and the aluminum adapter that threads into the frame and focuser needs to be addressed. It consists of three lenses that help to correct for both chromatic and spherical aberrations by bringing wavelengths onto the same focal plane. APO is what we call apochromatic for short. The Celestron C8 quickly became a widely popular telescope.You’ll often find that the best telescopes for astrophotography will almost always be APO scopes. Tom Johnson was able to achieve this by creating an inexpensive way to mass produce the Schmidt Cassegrain Telescope (SCT). The C8 was a groundbreaking telescope for its time because it featured quality optics at an affordable price. Celestron revolutionized the amateur astronomy industry when its founder, Tom Johnson, designed and released the Celestron C8 to the world in 1970.
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