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 other factor is cost. The Orthoscopic is great for viewing planets and Ramsdens are still the safest (for the eyepiece) design to use for solar projection. Image 2 shows the top of the eyepieces with the generous diameter of the glass. 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 100° FOV is quite impressive, almost too much to take in. Both the 68° and 82° Explore Scientific eyepieces performed splendidly. The eyepieces come with roll-up rubber eye guards that can be removed and easily replaced if they become worn. 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. My 12mm yielded 178x with this telescope. 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 true field of view of an eyepiece is calculated by dividing the apparent field of view, in this case 68° or 82°, by the effective magnification. View our Privacy Policy. When I first bought my first telescope in the 1970, there were many types of eyepieces to choose. Explore Scientific Eyepiece Review. My set now consists of the 6.7mm, the 8.8mm, and the 14mm. By signing up you may also receive reader surveys and occasional special offers. more from Astronomy's weekly email newsletter. In addition, the photo shows a 9mm (borrowed) Tele Vue Nagler and a 13mm Tele Vue Ethos eyepieces. The mount is extra. And to make it easier for you to get the most extensive news, articles and reviews that are only available in the magazine pages of Astronomy Technology Today, we are offering a 1 year subscription for only $6! Buyers must weigh those two factors before purchasing. My opinions of the eyepieces are available in this Explore Scientific Eyepiece Review. I tested each eyepiece in a 132mm f/7 apochromatic refractor and in a 190mm f/5.3 Maksutov-Newtonian reflector. I still have my favorite 18mm Orthoscopic and a few Ramsdens. Explore Scientific’s ED152 f/8 Air-Spaced Triplet is a diffraction-limited 6-inch (152 millimeters) apochromatic refractor. Click here to get these deals which only will be available for a very limited time. The choice of whether to use the 68° and 82° Explore Scientific eyepieces boils down to two factors. Welcome to Hyperion Astronomy! The former and the latter of those three provided comparable magnification, while the 9mm resulted in a noticeable higher power. They all have great eye relief, large exit pupils and an 82° FOV. The Explore Scientific ED APO 102mm f/7 Deluxe FCD-100 Hex-Focus is a short focus refractor. However, I have had two challenges with them. In a 1000mm focal length telescope, the 14mm provide 71.4x magnification, while the 16mm provides 62.5x. 0 Comment Report abuse Geminijk. 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. The same was true with the 9mm Nagler and the 13mm Ethos. The quality is superb. 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. Even with the eyepiece’s 82° FOV, objects did not stay in the eyepiece very long before I needed to nudge the telescope. Helpful. Eye relief, exit pupils, and field of view (FOV) were much smaller than today’s offerings. And that’s exactly what I saw. My 6-inch Explore Scientific ED152 Air-Spaced Triplet in Carbon Fiber - TED15208CF-HEXDD3 just fits inside and makes moving the 20lbs. It is 83mm tall, 48mm wide and weighs 256g (9.0 oz.). Second, the 2-inch eyepieces are heavy. 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 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. Enter the Space & Beyond Box Photo Contest! 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. I also wanted one around 24mm to use in lieu of my similar focal length, but much heavier 26mm Nagler. Ask Astro: Why does the Moon disappear during New Moon? Copyright © 2020 Astronomy Technology Today. Designed by WPZOOM. After testing the two 68° and 82° Explore Scientific eyepieces, I decided to stick with the 82° eyepieces and bought two additional ones. While the Explore Scientific eyepieces are notable beefier than the two Plössls, the Nagler and Ethos eyepieces dwarf them. Thus, I began a search for some high quality 1.25-inch eyepieces to augment my arsenal of 2-inch eyepieces. I prefer the wider FOV of the 82° eyepiece over the 68° eyepiece. Or, for an even better deal, we are offering 2 years for only $9. The 6-inch f/8 optics produce diffraction-limited images producing high resolution images of planets and deep sky objects. One is a Tele Vue Plössl, while the other is a generic Plössl. The Explore Scientific 24mm 82° did not come in a 1.25-inch barrel option, so I went with the 68° 24mm eyepiece. With the 13mm Ethos, the magnification is slightly lower (164x). My Nagler and Ethos eyepiece are superb, and I feel are the best I have ever used. I predominantly used Plössl eyepieces in the 1980s and 1990s. Explore Scientific ED152 f/8 Air-Spaced Triplet. Signal. The views through all four were superior the 15mm Plössl, where the stars were not as sharp near the edges. As you can see from this Explore Scientific Eyepiece Review I think I am finally set for life with high quality telescope eyepieces! I felt Naglers were the best eyepieces made. scope a breeze compared to the heavy hard case it come with. The eye relief is around 12mm with a field stop diameter of 18mm. The 82° cost more than the 68° eyepieces. Bracketing the Explore Scientific eyepieces are two Plössl eyepieces with similar focal lengths. However, I eventually decided to do some research on 6″ achromats and took the plunge with an Explore Scientific AR152, a 6″ (152mm) f/6.5 achromatic refractor. 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. They also came with top and bottoms dust caps. The weight of the eyepieces causes too much rotational torque on the tube. The argon purges any moisture that might condense on the lenses during cold weather use. It is sold as a tube-only configuration packaged with tube rings, two focuser-extension adaptors and a … Each came in the typical foam-padded Explore Scientific box with the decorative star-chart covers. 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!
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