25” non-marring compression ring accessory holders• Vixen dovetail plate. 8x reducer you get a fast flat field astrograph operating at f/4. On the front end, the retractable dew shield has an OD of 121mm, in case anyone is considering putting a filter there. The flattener produces wonderful flat fields as well as a 41mm image circle. Vostok 1. Attached Thumbnails. Altair Starwave 60ED AstroBin's equipment database is entirely maintained by the community. Please Log In to view the details for this classified ad. Mounts for Astro Tech AT60ED - posted in Refractors : Hi folks, I recently picked up an Astro Tech AT60ED as my first scope and noticed the mounts on each side of the scope for spot/guide scope and other peripherals. Edited by Joe Bergeron, 12 January 2021 - 09:16 AM. You need to space an extra 9. For the Astro-Tech Reducer/Flattener the spacing is 55mm with image circle of 42mm. But at this price range, it could not be better. Page 1 of 2 - Orion 80ED vs Astro-Tech 80ED for second scope - posted in Refractors : Ive been seriously considering the Orion 80ED as a second scope, (currently I have an Orion 8 Newt), and am wondering if there are any better options in that price range. VAT). 2. Feel free to make a contribution! Learn more. Any here have/used this scope ? wanna get some opionions on it before securing it Related Topics Astrophotography Photography Art Hobbies comments sorted by Best Top New Controversial Q&A Add a Comment birdfinder_net •. in small batches and is often on back order, the SW 120 is easy to find. Astro-Tech. Quadruplet Apochromat. A super portable refractor telescope with FCD100 ED glass, suitable for astrophotography or visual use, day or night-time. FPL-51 or equivalent in the triplet. Astro imaging bundle. ” I have found a number of positive reviews about this modestly sized refractor. The focuser can rotate as well to help you get the perfect framing. The Astro-Tech 60ED 1x flattener easily threads on to the focuser of your AT60ED after your remove the standard compression ring eyepiece holder. We carry all brands and products, like Meade telescopes, Celestron telescopes, and more. Does anyone know if a ring is made for this purpose? Also, Is it ok to store a Celestron 6se outside under a tarp. The home to all amateur astronomers & telescopes! Feel free to discuss anything astronomical here, from…. It not only has great reviews, has FPL-53ED glass, and a clear price advantage. Astro-tech 60ED FPL53 glass wide FOV imaging setup. 8x reducer/field flattener for f/6 refractors is now available from stock. 00 £806. My two larger, heavier, and more expensive 2" wide-field eyepieces haven't seen much use since I acquired the 28mm UWA over a year ago. Astro-tech 60ED wide FOV imaging setup. Its tube is. We carry all brands and products, like Meade telescopes, Celestron telescopes, and more. Really nice and bright, especially (“esp. Artificial stars at a distance of about 60 feet. 5mm of backfocus, barely enough to reach focus with cooled and uncooled astro cameras. 67 (ex. Mpaige10 likes this Back to top #36 Mpaige10 Mpaige10. 00 £632. New Astro-Tech 80ED - posted in Refractors : I had ordered and received a new open box SVBONY SV503 80ED which arrived with problems and was returned. The Astro-Tech AT60EDP astrograph provides an exceptionally flat field for very wide images that are sharp edge-to-edge, with no need for a separate field flattener. Hopefully someone here has. Formula: Pixel Size (mm) X Focal Ratio X Diameter of Shadow / Reflection (pixels) If you don't already know the size you can upload an image below and then click & drag over the dust doughnut or shadow to calculate the size. Should be the same as the tsoptics 60ed and Apertura 60ed and Astro tech 60ed Reply Product code: XRING-60ED. So, do I: --wait 3 months for. An Astrozap focusing cap is a lightweight aluminum cap that fits over the front cell of your telescope. Most Read Articles • Contact UsContact Us • Moon PhaseAstro-Tech 60ED Unboxed Equipment Discussions. It not only has great reviews, has FPL-53ED glass, and a clear price advantage. The Astro-Tech AT80ED is a telescope that clearly fills a niche in the popular 80mm compact range. 8 lens for faster and wider field astronomical and terrestrial photography. The images from its fully-multicoated ED (Extra-low Dispersion glass element) air-spaced doublet optics are virtually free of the annoying violet haloes of chromatic aberration (spurious color) that are typically seen around the Moon, planets, and bright stars in. The camera side of the reducer uses 48mm T-threads to connect to a T-ring and camera body. Tecnosky 90 Triplet f6 'OWL' APO. Astro-Tech AT60ED Backfocus Question - posted in Equipment (No astrophotography): I just received a brand new AT60ED today which I purchased hoping to upgrade the guidescope I was using. While this Astro-Tech ATRF72 0. Hardtailparty is gonna put out a review for the Habit soon. Having heard many good things. For Sale. 25lb. A favorite. Thank you Jeremy #2 06-01-2016, 06:11 PM barx1963 (Malcolm) Bright the hawk's flight : Join Date: Nov 2008. AT60ED vs. At best, you can use a cropped sensor, mirrorless camera. When Thomas passed away, Astronomics, continued in their support of his family. Same fit and finish. ASTRO-TECH AT72ED 72MM F/6 ED $379. 00. ( 3. My other two refractors are APOs (a TV-101 and the Mini Borg 60ED). Takahashi FOA 60Q *Like New* 11/10/2023 05:03PM. Beautiful TAKAHASHI FC-76 MC APO OTA (76/600mm) w/6x30 finder & clamshell. Telescop Expert ofera livrare rapida si cel mai bun pret din Romania. Page 1 of 3 - Star Tests: 60mm Sears vs. I am using a simple Alt Az tripod, and can have this set up ready in two minutes. The scope weighs in at a light 3. The thing that has most helped me practically is having a small refractor (F/6 60ED) and an artificial star that I can play around with indoors, under controlled conditions. 67 (ex. Focusing Masks For Telescopes. Add to View. Edit: I put an S on the end of scope in the title. The flattener is threaded for attachment to the telescope via a 54mm metric thread. Bahtinov Focus Mask for Telescope - Astro Tech 60ED SLIDE ON. Altair 60ED, MG32 Guider and EQ3 Pro Synscan mount COMBO £968. Page 1 of 5 - Astro Tech 80EDL or 80EDT? - posted in Refractors : Was wondering if anyone has experience between these two scopes. For Sale. I have taken multiple photos of the moon, m3 and m51 and although my photos may lack technical merit, it has. The difference in price is $399 for the Astro-Tech and $450 for the Orion. Page 1 of 2 - Yet another rebranded Sharpstar 60ED available now - posted in Refractors : I got an email from High Point today talking about a new Apertura 60mm f/6 FPL-53 doublet that looks exactly like the Sharpstar 60mm which is currently being sold with branding from Astro-Tech, Teleskop-Service, Altair Astro, and William. An SVBONY SV165 guide-scope fitted with a QHY-5II-M guide camera was mounted on the imaging scope. 00 £2,082. 80mm. This is in superb condition having been used on only a few occasions. 33 (ex. 800-422-7876. 83 (ex. Astromart Customer Service. The 2 inch focuser is extremely smooth and every screw has the non-mar. 2 oz with the rings and dovetail, 5 lbs 4 oz without rings and dovetail. Click here to create one. MPN. Our calculator, at typical seeing of 2-4”, uses the Nyquist formula of 1/2 and the 1/3 to stop stars becoming square so the optimal range is between 0. The box came with no instructions, so I am unsure if I installed it correctly. It is compact, well made with a rotating two speed Crayford focuser, a sliding dewshield and nice overall finish. Canon 300mm f/4 L Prime - posted in Refractors : Hello members of CN, I am trying to understand the differences between doublets + FFs and Canon L series Primes or Zooms. Dust / Reflection Calculator. ZWO EAF. Small is essential on a Sky Adventurer, so you are going to need to consider the assorted 60ED's and a flattener. Edited by Phillip Creed, 11 July 2023 -. The TV-85 is a great scope for astronomy with it's increased light gathering but too big and heavy to carry. 8X reducer/field flattener is designed for prime focus astrophotography with the Astro-Tech AT72EDII, it will work with other variants of the same optical tube. 5 to f/7 range that use a 2" focuser. Pocketprep has over 1000 covering the 7th edition. In. Page 1 of 4 - ASTRO-TECH AT80ED 3. I would get an Erect Image Diagonal for correct terrestrial viewing. Loc: Georgia. Both have FPL-53 glass. Cheers! Bob F. I like both the build and look of it, and the functionality of the rack and pinion focuser, but Im having a problem that Ive never experienced. 8x Reducer Field Flattener For the 60ED ? Clear Skies. Page 2 of 3 - Star Tests: 60mm Sears vs. The TS PhotoLine 60mm, f/6 FPL-53 apo arrives on the market amid some stiff competition from the suspiciously similar Astro-Tech AT60ED, the Altair 60EDF and the William Optics Zenithstar 61 apo (the Zenithstar’s 61mm, f/5. Quick test of Borg 60ED - posted in Electronically Assisted Astronomy (No Post-Processing): I have been absorbed by the Borg Collective, as I just received a Borg 90FL for EAA (and other visual and imaging purposes) AND snagged a lovely Borg 60ED from the UK. Parameters: Size: 59mm x 52mm x 41mmAT72EDII vs SV503 70ED - posted in Beginning Deep Sky Imaging: Im looking for a small portable refractor to get into AP and Im currently looking at a used AT72EDII or a new SV503 70ED, both include field flatteners. 3. Formal-Garden-7412 • 22 days ago. The WO Redcat is. Astro-Tech . Refractors. Most Read Articles • Contact UsContact Us • Moon PhaseOk, so today I received my brand new Sky Rover 60ED purchased directly from the Aliexpress store. Hello guys. This scope is for the person wanting a little more than what the 60ED and 72EDII can bring to the table. The 72mm, f/6 primary lens is an air-spaced ED doublet using FPL-53 optics. Seeing, focus and the mount will do more for better image quality than splitting hairs to justify spending double. Brand new adjustable field flattener for the William Optics Zenithstar 61 OTA. I have been considering the Astro-Tech AT60ED 60mm and the Apertura 60mm FPL-53. We've helped hundreds of thousands of people pick the right telescopes or accessories since 1979. Resolution Formula: ( Pixel Size / Telescope Focal Length ) X 206. Astro tech 66ed refractor mounting advice needed - posted in Refractors : HI All: After a long hiatus I am back into astronomy. The AT60ED shown with a TeleVue Panoptic 24mm eye piece, a TeleVue Everbright 1. At`$550, you should be getting an FPL-53 doublet. 1. 8 (Mini Borg) astrograph with 0. Joined: 06 Jan 2005. This new Astro-Tech AT80EDT refractor has: • 80mm f/6 fully multicoated triplet apochromatic optics using an ED center element. Deep sky object photographic data courtesy: DSS/STScI. Would I be better off with the Flat61R on the AT60ED or the Astro-Tech . And I thought As. 1 lbs: Keep in mind, the weight of these configurations will vary depending on the exact camera body you are using, and does not include any extra weight such as field flatteners, filters, or guide telescopes. You save. Astro Tech 60ED in my Apache 3800 from Harbor Freight. (To match the accessories for the Astro-Tech, you would have to spend about $145 for a dual speed focuser, $25 for tube rings and another $40 for the Dovetail bar, which in the end would come to $210 or $760 for the Orion ED80 vs $399 for the Astro-Tech). This finder shoe is designed to work on a variety of Astro-Tech telescopes. William Optics sold a fair number of them as well as a fair number of FPL-51 doublets. One of those world class designers was Thomas Back. 8x Reducer Field Flattener For the 60ED Optical Tubes. The telescope-side barrel is threaded for standard 2″ filters so you can attach a light pollution filter. 00 £315. Thanks. •. This Astro-Tech AT80ED refractor has: • split tube rings with detachable Vixen-style dovetail for installation on virtually any mount. The SharpStar 60ED is a Doublet O'Hara ED FPL53 unit. I would get an Erect Image Diagonal for correct terrestrial viewing. Whether you are bird-watching or simply enjoying nature's beauty, the advanced apochromatic system with ED (extra-low dispersion) glass minimises colour fringing. The Astro-Tech 1. I want to invest in my first astrophotography telescope which would be used with my iOptron SkyGuider Pro. Donation is not required by any means, so please enjoy your stay. Although its been listed out of stock for a. 00. I believe many of the StellarVue 80 mm F/7 Eds used the same FK-61/FP-51 class glass as the Astro-tech 80 ED. Astro-tech 60ED with FPL53 glass (like new condition) Astro-tech . I figure learn what Im doing, then. Inverted monochrome Annotated Large size Full size User. 5" rack-and-pinion focuser with 10:1 ratio fine focusing. Astromart. 00. I’ve been lucky enough to spend a few months basking in the spectacular far southern sky of New Zealand. Astro-Tech AT106. No nicks or marks on any part of the telescope. The new Astro-Tech AT80EDL is an extension of the beloved 60ED and 72EDII. Share FOV. Apertura 60mm APO Refractor Specifications. The AT 115 is an f/7 (804mm), the SW 120 is an f/7. The EDL has better glass. Star test results using an artificial star at a distance. As a short refractor, it's meant for wide-field views and astrophotography. The foam conversion is not pretty but it safely holds the entire set up in a easy to carry case. Astro-Tech Product #: AT60GS . Since I had a GSO 0. The Long Story: I like refractors. They have the standard 102ED for like 560. Speed 75m/s Extruder 215C Bed 60C Retraction 0. It is still lightweight, compact and portable but with much better performance, from star colors to planets and DSOs. My NIRQuest was easy to get up and running, but it seems like I can’t find the LabVIEW driver for the QEPro. 6 72ED Astronomical Telescope $463. Do I need a reducer/flattener? - posted in Beginning Deep Sky Imaging: Hi there I just purchased an Astro Tech AT60ED 60MM F/6 FPL-53ED doublet to do Astrophotography with my ioptron Skyguider Pro. Both are very nice. My goal in purchasing the Astro-Tech 60ED is to have a very portable scope that lets me take moderately closer glimpses at deep sky targets of interest to me. The Astro-Tech AT80ED has a retractable lens shade and comes in a locking aluminum-frame carrying case with room for accessories. Optics Type: ED FPL-53 Refractor. The AstroTech version has a nicer focuser, costs $100 less but uses FK 61 glass. Astro-Tech 60ED vs. SKU: N/A Category: Discontinued Product. 8X focal reducer/field flattener (like new condition) 3D printed Bahtinov focusing mask (like new condition) Rings and 3D printed risers with riser bolts 32mm Astrotech. Tossed up between the Red Cat, the 60ED and a Sigma 180mm f2. Thoughts on the Astro-Tech 80EDT? - posted in Beginning Deep Sky Imaging: Hi, Im looking to actually purchase my first personal astrophotography telescope (I have been borrowing one all this time). The optical tube measures 9. Page 14 of 23 - Astro-Tech 80EDL owners thread - posted in Refractors : Now I realize that it’s much easier to produce an 80mm doublet with minimal aberrations than it is to produce a more complex 180mm triplet at the same focal length, but regardless, this AT80EDL appears to be a good example of the right way to make a scope. Both WO refractors show exquisite but the price is expensive too, Sky Rover 60ED APO and WO Z61 looks no different to me but it is on a attractive price, the last AT65Q is already discontinued, but reviews are good. 11/11/2023 05:45PM. The Sharpstar 60ED is a versatile telescope that is perfect for viewing celestial objects such as the moon, planets, and stars. Im looking for a 300mm vintage lens or more but. 001at60ed. The ZWO EAF is a couple hundred dollars either way you go. Mount Type: Two 1/4-20 threaded holes on foot with spacing between holes: 30mm. The back focus is 55mm from the shoulder of the reducer to the. Sky and Telescope reviewed this scope back in 2009, saying: “the Astro-Tech AT106 provides all the benefits of a first-class 4-inch apo but without the premium price. Your Price: $419. This is one premium-quality diagonal that doesn't happen to be priced like one - and it's still a hot product for many observers. The Astronomics listing for this. Optically these should be identical to the original AT-102ED. . So, subtract the thickness of the t-ring from 9. 6 72ED Astronomical Telescope $463. Overall the AT80ED will be a great bargain even with KF61 ED glass. Canon 300mm f/4 L Prime - posted in Refractors : Hello members of CN, I am trying to understand the differences between doublets + FFs and Canon L series Primes or Zooms. Pick up the phone, or drop us a line, and we will be happy to be of service. (0. 4KidsOneCamera • 3 yr. 7X - even at $400 - makes a 294- or 533-size camera an affordable, awesome screaming-fast system when coupled with an Astro-Tech EDL or EDT. 8X reducer (384mm @ f/4. Cle. ASTRO-TECH AT60ED 60MM F/6 FPL-53ED AND LANTHANUM DOUBLET I am selling my Astro-Tech 60ed + . 60mm Astro-Tech ED - posted in Refractors : Sears 60mm x 700mm Discoverer (Towa) achromat, circa 1968, vs. Sharpstar 400F5. ·. -- John Vienna, VA iexos-100-2, Orion 80 ED, Astro-Tech 60ED, Celestron Comet Catcher, Nikon D90 astro modified, SVBONY SV165 40mm, SVBONY 905c guide camera. The AT70ED is bringing ED optics to you at a fantastic price. Astro-Tech 60ED: not yet fully evaluated. 975, but. 25" (260mm) wide, and 11. But the AT60 really isn't intended for planetary visual use. $139. 13-01-2016, 12:32 PM. The new Astro-Tech AT102EDL is an extension of the beloved 60ED and 72EDII. Add to list. Page 1 of 2 - First refractor: Need advice - posted in Beginning Deep Sky Imaging: I have an iOptron Skyguider Pro coming in a few days. ASTRO-TECH AT72ED 72MM F/6 ED $379. FocusKnobs. For Sale. buy. 5x barlow, Lunt. 1-800-422-7876 questions@astronomics. 00 £547. An Astrozap focusing cap is a lightweight aluminum cap that fits over the front cell of your telescope. This is a great little portable package. Buy telescopes and telescope accessories at Astronomics. For Sale. Nor do it see it in my faster Dobs with a. Skywatcher. Astro-Tech Product #: AT60GS . I am not clear how the more expensive triplet like the Sharpstar or Radian would be better, given the positive reviews of the lack of color shift in the AT telescope. 8x Reducer Field Flattener For the 72EDII Optical Tubes. Persian. The Astro-Tech AT60EDT is a superb grab-and-go visual scope, a fine wide-field astrograph, and a daytime spotting scope. 25, 2022A number of people are using 60-80mm ED's as guide scopes, which is arguably even more overkill-y than using one as a finder scope. Astro-Tech 60ED and NEW x0. Joined: 26 Jul 2020. $0. The Astro-Tech ATRF60 0. The AT60ED is the perfect size scope for traveling. The Astro-Tech AT60GS guidescope is a 60mm aperture 240mm focal length (f/4) achromatic refractor with a helical focuser. $369. The Astro-Tech ATRF60 0. Page 1 of 3 - Skywatcher Evoguide 50ED for Astrophotography? - posted in Refractors : Hey guys, im looking for a very versatile refractor and I want your opinions on the Skywatcher Evoguide 50ED. I have talked to the people at astronmics. Astro-Tech 70ED - posted in Refractors : Im thinking of getting the $299 AT70ED as my first foray into astrophotography. 1000 mm. Last updated on Jul 13, 2023 15:59:36 PDT View all revisions View all revisions. The Astro-Tech AT60EDP Astrograph offers fully multicoated optics and all lenses have the latest state-of-the-art antireflection multicoating’s matched to their glass types on all air-to-glass surfaces for high light transmission and excellent contrast. I’ve owned both the ZS61 and AT-60ED. Kind of a MkII. The Astro-Tech 102ED is a handsome 102mm F/7 refractor. The set up new is over $1,150 plus shipping. com and they have no idea when they will be. Add New Equipment To Database. No liability assumed for product specifications. 6- Altair Starwave Ascent 102ED F/1122 - The planet killer outstanding high magnification performance. #1 johnjohn Sputnik topic starter Posts: 29 Joined: 15 Oct 2017 Posted 30 December 2017 - 09:41 AM Hello! Please, does anyone know how does compare. It uses two ED elements in its configuration and offers the unique flat field ability inherent with the Petzval design. Celestron Nexstar 102 GT computerized 4” refractor $140. ASTRO-TECH AT60EDP 60MM F/5 DUAL ED PETZVAL OTA - posted in Refractors : I saw this for sale on the Astronomics website today. The Astro-Tech 60ED is high on the list when it becomes available. AT60ED AT72ED II AT92EDT AT102ED Thank you very muchAn astrophotograph by Gideon Golan on AstroBinAstro-Tech AT60ED and AT72EDII Black Friday Sale; Universal Astro Sale; Various Used and Demo Scopes and Mounts; iOptron 20% Off Sale While Supplies Last;. Clear Skies, Phil. 5mm – 17. This is a brand new 2019 item which is now in stock at Rother Valley Optics. ) and is 125mm long. IMG_0602. Page 1 of 5 - Astro Tech 80EDL or 80EDT? - posted in Refractors : Was wondering if anyone has experience between these two scopes. VAT) Altair 2 inch Magnetic Filter Holder - T2 - Version 2 £75. 5 compared to the usual F6 (TS sold the F5. Astro Tech refractors diameters? - posted in Refractors : Hi all, I would like to know about the outer diameter of the following AstroTech scopes for something i want to buy, please make sure it is a precise measurement as much as possible possible. 5mm or 7mm DeLite for Astro-Tech AT60ED? - posted in Eyepieces: Im primarily a binocular observer (Canon IS 10x42 and 15x50). 00 usd. At 80mm aperture, this is a fantastic option for those wanting to spend their nights imagin. Brand. (TS Photoline 60mm/60ED) which would produce a short and fast 260mm f/4. • 2" and 1. Astro-Tech AT72EDII Refractor OTA FPL-53 f/6 $469. Buy telescopes and telescope accessories at Astronomics. Astromart. Camera lenses are not really suited for deep sky photography. Posted 27 August 2019 - 01:58 PM. Astro Tech, Feather Touch, Please be aware that not all modules from the brands above are supported. It will cost $90 or so more than the AT with shipping, but it’s in stock and they are a great company to deal with. Astro-Tech AT60ED Field Flattner - posted in Equipment (No astrophotography): Hello, 5 months ago I purchased an Astro-Tech AT60ED telescope. Astro-Tech AT60ED . I own a TV-60, Astro Tech 60ED, and a TV-85. Happy 2023 to everyone! Ever wanted to take a telescope on vacation with you… but you’re flying there and not driving? You need an instrument considerably sm. Dual ED - posted in Eyepieces: Any opinions on the Astro-Tech Premium Flatfield (PF) eyepieces versus the Dual ED eyepieces available from Astronomics and Agena? It seems like one is better-corrected for field curvature but the other is better-corrected for chromatic aberration. Astro-Tech AT60ED Backfocus Question - posted in Equipment (No astrophotography): I just received a brand new AT60ED today which I purchased hoping to upgrade the guidescope I was using. The FSQ-106ED is a 4. This l. It's faster than the AT-60ED, I don't see astigmatism with the 31mm Nagler in my NP-101. The Altair 60 EDF is our most compact telescope, and this a more refined version with an S-FPL53 doublet objective lens providing superior colour correction and a lighter more compact tube. Click here to create one. M51 and companion - at least as bright as my 10" dob. It’s $949. It looks better from the outside, but when youre observing or doing astrophotography in the dark, you. The Apertura 60EDR APO refractor can be used as a travel telescope, a guide scope, a super finder, or a spotting scope. This evening a new scope arrived, an Astro Tech AT102ED. Celestron Astro Fi 6" SCT WiFi Telescope £799. Pocketprep for the exact reasons above. Astro Tech 60ED Telescope Review A miniature telescope with a specific task in its future, if I'm. 05167v2 [astro-ph. Although the Astro-Tech 80ED is labeled as an apochromat, you should probably take that with a grain of salt. 8mm so, if so, you are already too long before adding spacers. 50 (ex. For the Astro-Tech Field Flattener the optimal spacing from field flattener to film plane: 57mm +/- 4mm and Canon is supposed to be 55. Cloudy Nights. I have a little Astrotech 66ed that I want to mount on a little Televue alt az mount. . UPC. 00 £632. (Ill add that itd be nice to have pleasant. Is there an Astro Tech dealer in Australia or do you purchase direct from the USA? I would like a AT65EQD. The scope is a f/5. I already have a Skywatcher ED100 that Im very fond of, but a smaller scope for both grab-and-go visual use and wider-field imaging sounds appealing. Calculate the resolution in arc seconds per pixel of a CCD with a particular telescope. CNers have asked about a donation box for Cloudy Nights over the years, so here you go. Do not use the screws provided with the shoe. The ZWO ASI533MC Pro. My finder scope for the C8 is a Stellarvue AT1010 (80mm f/6 achro) with 2". . Posts: 711. Zenithstar 61 II vs. Weighing 19 pounds with tube rings and finder attached, this triplet is a 127mm, f/7. Length: 18" dewshield retracted, 21. The flattener is threaded for attachment to the telescope via a 54mm metric thread. 3D Printed.