The weight of the eyepieces causes too much rotational torque on the tube. The other factor is cost. They also came with top and bottoms dust caps. I still have my favorite 18mm Orthoscopic and a few Ramsdens. Cruise to totality in the South Pacific with Astronomy in 2020! When I first bought my first telescope in the 1970, there were many types of eyepieces to choose. Explore Scientific’s ED152 f/8 Air-Spaced Triplet is a diffraction-limited 6-inch (152 millimeters) apochromatic refractor. The 16mm 68° eyepiece is 62mm tall, 43mm wide and weighs 158g (5.5 oz.). Click here to get these deals which only will be available for a very limited time. Plössl provided a then large 50° or more apparent FOV. 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. The 100° FOV is quite impressive, almost too much to take in. Receive news, sky-event information, observing tips, and Order now to get your Black Holes Collection from Space & Beyond Box! Many longer focal length Naglers came with 2-inch barrels. The ED152 Air-Spaced Triplet FCD1 Series in Carbon Fiber with 3" HEX Focuser represents perhaps the greatest value in a large aperture ED Apochromatic refractor available today. Buyers must weigh those two factors before purchasing. As you can see from this Explore Scientific Eyepiece Review I think I am finally set for life with high quality telescope eyepieces! The mount is extra. Eye relief, exit pupils, and field of view (FOV) were much smaller than today’s offerings. On the left is the 14mm 82° eyepiece and on the right is the 16mm 68° eyepiece. Explore Scientific ED152 f/8 Air-Spaced Triplet. The Explore Scientific ED APO 102mm f/7 Deluxe FCD-100 Hex-Focus is a short focus refractor. The eye relief is around 12mm with a field stop diameter of 18mm. Helpful. The eyepieces are ruggedly manufactured with high quality materials. Ask Astro: Why does the Moon disappear during New Moon? They still are made and sold today. My Nagler and Ethos eyepiece are superb, and I feel are the best I have ever used. You can also check out a free sample issue here. Designed by WPZOOM. Plus, get FREE SHIPPING & BONUS GIFT! Second, the 2-inch eyepieces are heavy. My 6-inch Explore Scientific ED152 Air-Spaced Triplet in Carbon Fiber - TED15208CF-HEXDD3 just fits inside and makes moving the 20lbs. The 82° cost more than the 68° eyepieces. The eyepieces are waterproof and sealed with inert argon gas between the elements. In the 1980s, Plössl eyepieces started showing up everywhere and became very popular. I tested each eyepiece in a 132mm f/7 apochromatic refractor and in a 190mm f/5.3 Maksutov-Newtonian reflector. Today I predominantly use three Tele Vue eyepieces: the 2-inch 26mm Nagler, the 2-inch 13mm Ethos and the 1.25-inch 5mm Nagler. Each came in the typical foam-padded Explore Scientific box with the decorative star-chart covers. After testing the two 68° and 82° Explore Scientific eyepieces, I decided to stick with the 82° eyepieces and bought two additional ones. Therefore, I have to use a focuser extended. My opinions of the eyepieces are available in this Explore Scientific Eyepiece Review. However, my new set of 82° Explore Scientific 1.25-inch eyepieces will be my primary eyepieces when using my 190mm Mak-Newt, or when I am travelling light with my 70mm apo with either my iOptron Cube Pro mount or my Explore Scientific Twilight II mount. When I first bought my first telescope in the 1970, there were many types of eyepieces to choose. Is it better to use a telescope or binoculars to observe space? 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! The eyepieces come with roll-up rubber eye guards that can be removed and easily replaced if they become worn. Each are serrated for ease of gripping either barehanded or with winter gloves. View our Privacy Policy. 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. Welcome to Hyperion Astronomy! The Orthoscopic is great for viewing planets and Ramsdens are still the safest (for the eyepiece) design to use for solar projection. We do not sell, rent or trade our email lists. Copyright © 2020 Astronomy Technology Today. The argon purges any moisture that might condense on the lenses during cold weather use. While the Explore Scientific eyepieces are notable beefier than the two Plössls, the Nagler and Ethos eyepieces dwarf them. I eventually traded in my 12mm Nagler for a 13mm Ethos to use with my 14-inch f/6 Dobsonian telescope. Both Explore Scientific eyepieces provide sharp, high contrast views with pinpoint stars throughout the FOV. Signal. My Tele Vue eyepieces will still be my workhorse oculars when using my 14-inch Dob; my 132mm apo; and with my 70mm apo, when I have it mounted piggyback on a larger instrument or by itself on either my Celestron CGEM II or AVX mounts. 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. The 6-inch f/8 optics produce diffraction-limited images producing high resolution images of planets and deep sky objects. Then I discovered Tele Vue Nagler eyepieces. They all have great eye relief, large exit pupils and an 82° FOV. The designed had names like Ramsden, Erfle, Huygen, Kellner, König and Orthoscopic, to name a few. View our Privacy Policy. 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. I did a lot of research and decided to try out Explore Scientific 68° and 82° eyepieces. Not only did I compare the eyepieces to each other, but I also compared them with a 13mm Tele Vue Ethos eyepiece, a 9mm Tele Vue Nagler eyepiece and a 15mm Tele Vue Plössl eyepiece (Image 4). The FOV is so large I have to pan my eyeball around to see everything the eyepieces capture. With high quality glass and lens coatings, Plössls provide high-contrast, symmetric views. And that’s exactly what I saw. Explore Scientific Eyepiece Review. Each had pros and cons. I felt Naglers were the best eyepieces made. Join Us in Tucson for Our Annual Public Star Party!

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