Opinion: SpaceX’s Starlink satellites are about to ruin stargazing for everyone, Prospects for life on Venus dim in reanalysis of phosphine data, Sun-like star identified as the potential source of the Wow! With the 13mm Ethos, the magnification is slightly lower (164x). The eyepieces are ruggedly manufactured with high quality materials. Is it better to use a telescope or binoculars to observe space? My 12mm yielded 178x with this telescope. The designed had names like Ramsden, Erfle, Huygen, Kellner, König and Orthoscopic, to name a few. With high quality glass and lens coatings, Plössls provide high-contrast, symmetric views. I predominantly used Plössl eyepieces in the 1980s and 1990s. They all have great eye relief, large exit pupils and an 82° FOV. The Explore Scientific AR152 (L) and the Astrotelescope AR1522 (R) The Explore Scientific refractor comes in a package that looks almost too good to be true. Plössl provided a then large 50° or more apparent FOV. Both the 68° and 82° Explore Scientific eyepieces performed splendidly. They are also heavy with my 190mm Mak-Newt (see ATT, volume 11, issue 6), since I use rotating tube rings with that telescope. 0 Comment Report abuse Geminijk. The FOV is so large I have to pan my eyeball around to see everything the eyepieces capture. The 24-pound (10.9 kilograms) telescope comes with a carbon-fiber tube, a Starlight Instruments focuser, and a 2" diagonal mirror. Designed by WPZOOM. Enter the Space & Beyond Box Photo Contest! I prefer the wider FOV of the 82° eyepiece over the 68° eyepiece. Copyright © 2020 Astronomy Technology Today. They are so heavy that I cannot use them with my 70mm apo (see ATT, volume 11, issue 2) on my iOptron Cube Pro (see ATT, volume 10, issue 6) mount. Helpful. The views through all four were superior the 15mm Plössl, where the stars were not as sharp near the edges. The Orthoscopic is great for viewing planets and Ramsdens are still the safest (for the eyepiece) design to use for solar projection. Image 3 shows the two eyepieces standing next to several other eyepieces for comparison. When I first bought my first telescope in the 1970, there were many types of eyepieces to choose. more from Astronomy's weekly email newsletter. Get ready for this Halloween’s Blue Hunter's Moon, Infinity & Beyond — Episode 9: Saturn's rings, Infinity & Beyond — Episode 8: Black holes 101, Queen guitarist Brian May and David Eicher launch new astronomy book. The true FOV for 1000mm focal length telescope is 1.1° (82 ÷ 71.4 or 68 ÷ 62.5). The eyepieces come with roll-up rubber eye guards that can be removed and easily replaced if they become worn. My 6-inch Explore Scientific ED152 Air-Spaced Triplet in Carbon Fiber - TED15208CF-HEXDD3 just fits inside and makes moving the 20lbs. The argon purges any moisture that might condense on the lenses during cold weather use. I still have my favorite 18mm Orthoscopic and a few Ramsdens. Four new giant telescopes are about to rock astronomy, Celestron celebrates 60 years of crafting telescopes, The history and future of telescopes on the Moon, Earth's best telescopes have closed, but the hunt for dangerous asteroids continues, COVID-19 forces Earth's largest telescopes to close, The history of the Ritchey-Chrétien telescope, Humans have been living on the ISS for 20 years, Sprites and elves frolic in Jupiter's skies, Space Gift Ideas for Astronomy Buffs and Skygazers for the 2020 Holiday Season, Travel to Costa Rica in February 2021 with. The AR152 has received several good reviews since it came out, along with all of Explore Scientific’s products, and is offered at the unbelievable price of $750. Each came in the typical foam-padded Explore Scientific box with the decorative star-chart covers. Thus, I began a search for some high quality 1.25-inch eyepieces to augment my arsenal of 2-inch eyepieces. In a 1000mm focal length telescope, the 14mm provide 71.4x magnification, while the 16mm provides 62.5x. First several of my telescopes do not have enough back focus range for the longer focal length (12mm and longer) eyepieces to focus. My opinions of the eyepieces are available in this Explore Scientific Eyepiece Review. And that’s exactly what I saw. When I first bought my first telescope in the 1970, there were many types of eyepieces to choose. To achieve the wide FOV, eliminate chromatic aberration, and provide sharp flat fields, these eyepieces use 6-7 elements of dense crown, light crown, dense flint, and lanthanum optical glasses. The eye relief is around 12mm with a field stop diameter of 18mm. I also wanted one around 24mm to use in lieu of my similar focal length, but much heavier 26mm Nagler. I did a lot of research and decided to try out Explore Scientific 68° and 82° eyepieces. Ask Astro: Why does the Moon disappear during New Moon? Therefore, I have to use a focuser extended. Welcome to Hyperion Astronomy! Cruise to totality in the South Pacific with Astronomy in 2020! I tested each eyepiece in a 132mm f/7 apochromatic refractor and in a 190mm f/5.3 Maksutov-Newtonian reflector. In ends up both Explore Scientific eyepieces provide the same true FOV. Aided by the 100° FOV, objects are in the eyepiece much longer without moving the telescope.
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