Astro-Tech 70ED - posted in Refractors : Im thinking of getting the $299 AT70ED as my first foray into astrophotography. It's a 102mm f/7 doublet refractor made with fk61 ED glass. Posted 23 May 2019 - 11:05 AM. $139. 8x Reducer Flattener for Astrophotography. I’ve owned both the ZS61 and AT-60ED. Edit: I put an S on the end of scope in the title. 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. Donation is not required by any means, so please enjoy your stay. 6 72ED Astronomical Telescope $463. This image content just LRGB 10x180 seconds in each channel and 20x500 seconds H-alpha. 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. I have been considering the Astro-Tech AT60ED 60mm and the Apertura 60mm FPL-53 Doublet APO Refractor, I like the weight and the size of both for my. Solar system imagery courtesy: NASA/JPL. Listed below is the advert with the parts i have been sold. Yeah, that's cutting the illumination circle a bit, but so what. 5). 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. Astro-Tech 60ED: not yet fully evaluated. 00. 5" long with. 6M subscribers in the astrophotography community. It will not work on all of them however. Optically these should be identical to the original AT-102ED. 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. 25″ with it. Last updated on Jul 13, 2023 15:59:36 PDT View all revisions View all revisions. Add the deluxe features like the rotating dual speed microfine focuser,. From my experience and knowledge I have learned the past year or two, I want a small refractor for my ZWO ASI1600mm. Beautiful TAKAHASHI FC-76 MC APO OTA (76/600mm) w/6x30 finder & clamshell. The FCD100 ED Doublet lens gives very good colour correction, controlling hot blue stars especially well. Hard Case: The Astro-Tech AT130CA hard case is designed to hold the Astro-Tech AT130EDT 130mm triplet ED apo refractor. Astro-tech AT60ED + Astro-tech 0. Altair Astro Limited is. Posted 04 October 2023 - 09:27 PM. Bahtinov Focus Mask for Telescope - Astro Tech 60ED SLIDE ON. These mount holes are 20mm apart, is this a standard size, or do I need something proprietary to mount something on the scope. ·. The main lesson seems to be, however, that if an apo doesn't show a textbook star test then it isn't necessarily a sign of a problem. ago. 5 MC Red, mint condition. When I researched the reviews for the scope I couldn't find a bad word said about it and. 8X REDUCER FIELD FLATTENER - posted in Refractors : Anyone know or care to explain the difference between the ATR8 and the ATRF72 Focal Reducers/Field Flatteners?The ATRF72 is out of stock for the foreseeable future, but the ATR8 is readily available at the same price - what gives?TIA. I was given the opportunity to test out and review the Apertura 60EDR & its dedicated field flattener from High Point Scientific! I knew that this telescope could be a phenomenal choice for those just diving into the hobby or even the seasoned astrophotographer. 67 (ex. Set it up once and it will stay in focus forever! Altair GPCAM Guide Camera with an extremely sensitive GPCAM AR0130 Mono sensor connects directly to the MG32 Mini Guider. Astronomics is a family business and Thomas Back was a part of the Astronomics extended family. Astro-Tech 60ED: not yet fully evaluated, but well made and looks good so far. 92 (ex. Resolution Formula: ( Pixel Size / Telescope Focal Length ) X 206. Just my two cents. It functions as a handle (This is fairly obvious from the name. Add to Cart. Due to a stock re-organisation, Altair is closed to visitors and we cannot take phone calls between Mon 25th and Fri 29th - we are still shipping goods but there will be a 1-2 day delay in shipping. 5mm) > Filter Holder (17. Astro-Tech AT65Q ED. The box came with no instructions, so I am unsure if I installed it correctly. It can be ordered with various accessories. 8X reducer/field flattener is designed for prime focus astrophotography. For a little more money, you could go with a lightweight Manfrotto tripod with a. Calculate the resolution in arc seconds per pixel of a CCD with a particular telescope. At Astronomics, we have that experience - a staff total of over 160 years of experience using and selling telescopes. The Altair Astro Starwave ASCENT 70 ED is a solid option for travel and wide-field astrophotography. 00 £547. I would get an Erect Image Diagonal for correct terrestrial viewing. 1" F/7 ED REFRACTOR - posted in Refractors : Well just ordered me a ASTRO-TECH AT80ED 3. Theres a couple of dust spots in the lens but doesn't affect imaging and some marks on the dovetail. This product is discontinued, for the new 5V EAF please click here. I was initially considering the Orion 80ED, but the focal length is a little longer than I would like and I dont like the focuser. 5 set up with an efl of 950mm. . The AT70ED is bringing ED optics to you at a fantastic price. 67 = 2 / 3, 2 = 4 / 2). The Astro-Tech AT60ED might be just the compact high-quality grab-and-go or travel scope you have been searching for. I have since sold my scope and never used the flattener so now it is up for sale. 25" dewshield extended. William Optics sold a fair number of them as well as a fair number of FPL-51 doublets. 00 £958. 1000 mm. . Please stay tuned. Weighing in at just 3. It has dual. Seems expensive. It not only has great reviews, has FPL-53ED glass, and a clear price advantage. 25" Adaptor, Carry Case, Tripod Base / Tube Ring. 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. Until then, I want to image and auto. Astro-Tech 60ED vs. You need to space an extra 9. I’ve been lucky enough to spend a few months basking in the spectacular far southern sky of New Zealand. The flattener is threaded for attachment to the telescope via a 54mm metric thread. ) They also have reviewed the higher spec Growler 40 some time ago. → Refractors. 00. It takes a telescope dealer with practical hands-on telescope experience. Those AT dovetails are great - having the long slot in the middle is very convenient for different. But the William. I was hoping to do this first light video of my Astro-Tech AT60ED after I got my flattener/reducer, however they just haven't been in stock. • split tube rings with detachable Vixen-style dovetail for installation on virtually any mount. 00. The optical tube measures 9. 95, 709mm FL, used Plossls of 32 to 15mm, and 66 degree ultra wide (similar to Orion Expanse) of 9 and 6 mm: M3 above Boo, nice fuzz ball at 20mm. ASTRO-TECH AT60ED 60MM F/6 FPL-53ED AND LANTHANUM DOUBLET I am selling my Astro-Tech 60ed + . 95. 2. Incorporates Ohara FPL-53 glass optics for enhanced contrast, color correction, and sharpness. It can be ordered with various accessories. Focal lengths are 560 for EDL 480 for the EDT. An Astro-tech 102 EDL is close to your budgeted amount and loaded with premium glass and accurate Strehl. The AT60EDP produces a 44mm image circle. 5 inch rack and pinion focuser addresses what was the only weak point in some of the first AT-102EDs. 5x barlow, Lunt. Portable Astrograph. Altair Astro Limited is a UK CompanyCurrently, I want a frustration free experience before taking up bigger challenge. 43AT72EDII or AT80ED - posted in Beginning Deep Sky Imaging: After much agonizing I made a decision and placed an order for an Astro Tech AT80EDT triplet -- very excited! Except I found out the next day that even though the website says they have them in stock they actually dont, and wont for another 60-90 days. Condition is New. 17 (ex. 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. A few on the back. The Astro-Tech AT150EDL is the largest apeture telescope in the EDL series. It not only has great reviews, has FPL-53ED glass, and a clear price advantage. Its fully multi-coated optics provide bright, clear images that are free from distortion and color. Orion 2” 38mm superwide eyepiece. ") at 15mm. 95. Astro Tech 60mm . ? Basically, as my first proper scope, is it worth to spend that $100? I also. For Sale. The prospective user can obtain optics of equal or slightly. Decent 2" rack and pinion focuser with sufficient focus travel. Guidescope Suitability Calculator. I thought that I would do an unboxing of the newest addition to the family. 34mm and that is the thickness of the spacer (s) you require. 00 £632. 5mm – 17. Thanks. This will be for visual use; no photography planned at this time. (From the website). With its retractable dew cap pulled in, its overall length is just 34 inches, but extending the cap fully makes it a bit longer than the Orion scope. Add to View. 00. No liability assumed for product specifications. Optically it is quite good, pushed hard on difficult targets like Venus, a faint purple fringe is visible. 60mm Astro-Tech ED - posted in Refractors : Sears 60mm x 700mm Discoverer (Towa) achromat, circa 1968, vs. I know you get what you pay for, but I also cant justify spending over $500 on a hobby I might not be able to figure out lol. Astro-Tech 60ED Unboxed Equipment Discussions. 83 (ex. The Tecnosky 90 OWL is a triplet with Ohara FPL-55 glass and a guaranteed minimum strehl of 0. Most Read Articles • Contact UsContact Us • Moon PhaseThe Astro-Tech 127EDT, in comparison, is a relative monster. Weighing 19 pounds with tube rings and finder attached, this triplet is a 127mm, f/7. Astro-Tech 60ED Unboxed Equipment Discussions. 1 William Optics Zenithstar 61. Page 1 of 4 - Astro Tech's new Scopes coming soon! - posted in Refractors : I didnt see this on the refractor forum. I've had a number of medium-capacity manual Alt-Az mounts that would certainly handle an AT80ED. Canon 100-400 IS I vs. 25-inch adaptor. 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. Obvious differences -- the AT 115EDT is a triplet apo, the SW 120ED is a doublet. Edited by Highburymark, 23 January 2023 - 03:38 PM. 8x field flattener (no stock currently) + William Optics 48mm T-mount for Sony E-mount OR 2. Astro-Tech 60ED Unboxed Equipment Discussions. So I've seen this topic come up a lot. More focuser will be supported in the further. Mounting to a Refractor Mounting Ring: Select the F002 E above. 60mm Astro-Tech ED - posted in Refractors : My Astrotech AT72EDII shows identical diffraction rings inside and outside of focus when using an artificial star and a #58 green filter. This uses the FB shoe and has a machined adapter that attaches it to the top of a 1" wide telescope mounting ring. I've just upgraded to the Speed Spider Hot end and this is the quality of my prints now, anyone got any idea what's going on? I've calibrated the PID. For the Astro-Tech Field Flattener the optimal spacing from field flattener to film plane: 57mm +/- 4mm and Canon is supposed to be 55. I want to invest in my first astrophotography telescope which would be used with my iOptron SkyGuider Pro. Astromart. 5mm flange to sensor spacing). topic starter. For $50 more, the 80EDT gives you the performance of a triplet and significantly faster at F/6. 8lb apertura 60mm 3. Quick view. Looks like a sky rover 60ed rebranded, make sure it uses fpl53 glass and you should be good. Some of you suggested the AT72EDII and it looks like a fantastic scope,. The telescope-side barrel is threaded for standard 2″ filters so you can attach a light pollution filter. Spencer-3d. Fun to view with. The important perfomance updates come in the type of ED element combination and the type of foucser the AT125EDL is built around. A UV/Ir filter should probably be used with all CMOS cameras and refractors, independent of their correction or quality. Cle. 7- Astro Telescope 102 F/11- very nice scope, classic Fronhofer But out classed by my Altar 102ED F/1122. Astro tech 60ed . This is a great little portable package. 8x Reducer Field Flattener For the 60ED Optical Tubes. NET assembly calls. 8 lens for faster and wider field astronomical and terrestrial photography. Refractors. Feel free to make a contribution! Learn more. 90. Celestron 2” xcel 5mm ocular $50. Calculate the resolution in arc seconds per pixel of a CCD with a particular telescope. Quadruplet Apochromat. Astro-Tech 60ED vs. This Astro-Tech AT60EDP refractor astrograph has: • 60mm f/5 fully multicoated four-lens Petzval refractor • Two ED lens elements, FCD-100 and FK-61 • 44mm corrected image circle • amazing flat field. The Long Story: I like refractors. -- 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. . 265. Mechanically, the 2. FocusKnobs. This Astro-Tech AT80ED refractor has: • split tube rings with detachable Vixen-style dovetail for installation on virtually any mount. It is not too heavy and gives you a focal length of 288mm. However they are very different by design. It’s really helped me understand the basics so I can evaluate the quality of my larger refractors outdoors. 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. 8X Reducer for 72EDII (ATRF72) Accessory: 24: 164: Astro-Tech . Leo Triplet NGC 3628, M66, M65. Page 1 of 3 - Astrotech ED series - 72mm or 80mm? - posted in Refractors : Im trying to decide between a 72mm and 80mm doublet Astrotech ED series. I was very excited - until I opened the box to inspect my new telescope. The price difference may be due to the fact that the astro-tech uses FCD-100 and FK-61 glass whereas the StarField uses FPL-53 glass. Back to top #7 nicknacknock nicknacknock. Page 1 of 5 - Astro Tech 80EDL or 80EDT? - posted in Refractors : Was wondering if anyone has experience between these two scopes. 00. No nicks or marks on any part of the telescope. One good alternative is to buy the Astro-Tech AT60ED - which is basically the same scope as the Z61 - from our friends at Astronomics, along with the field flattener, for less than the new Z61 costs alone. 8x Reducer Field Flattener For the 60ED Optical Tubes. VAT). Should I wait for the Astro-Tech AT60ED plus the 0. Re: AT70ED. Here are some Borg 60ED images resulting from a Google search :-Gary Honis-modified Canon XS(D1000), Hutech 60ED F3. On the front end, the retractable dew shield has an OD of 121mm, in case anyone is considering putting a filter there. 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 Optics. 60ED APO F/6 The new 60ED APO telescope from Sky Rover has excellent optics, a small and portable body, weighing less than two kilograms, so that you can travel to observe and photograph, no longer physical work, better enjoy the stars. Brands / Companies 925 ; Cameras 3311 ; Sensors 465 ; Telescopes & lenses 3753 ; Mounts 613 ; Filters 2238 ; Accessories 1410 . Although its been listed out of stock for a. My finder scope for the C8 is a Stellarvue AT1010 (80mm f/6 achro) with 2". Length: 18" dewshield retracted, 21. Starwave 70ED Refractor Optical Telescope Tube (OTA), 2"-1. 00 £2,082. Page 1 of 2 - Astro-Tech 66ED -- first impressions - posted in Refractors : I finally picked up an Astro-Tech 66ED this week from Astronomics and have been playing with it much of the past couple days. Looks like a decent size scope I can hike with to remote locations and use with my Skyguider Pro with M4/3 and APS-C bodies, and its decently priced with its flat field corrector. This Astro-Tech AT60EDT ED triplet refractor has: • 60mm f/7 fully multicoated apochromatic ED triplet refractor optics. Add To Cart. So until then I am stuck using scope uncorrected. Based on the classic two-doublet Petzval. This is markedly higher reflectivity than the 88% of a conventional aluminum diagonal or the 96-97%. 95. Turned out the Astro-Tech 80ED. Altair Astro Limited is a. By attaching the dedicated 0. My Astro-Tech AT80 arrived on Wednesday, along with the Astro-Tech 2-inch Dielectric diagonal. I am selling my Astro-Tech 60ed + . Kind of a MkII. Most other 80mm apos Ive seen are much more expensive, but the Astro-Tech is nearly. 5mm or 7mm DeLite for Astro-Tech AT60ED? - posted in Eyepieces: Im primarily a binocular observer (Canon IS 10x42 and 15x50). Then I noticed in another thread about that telescope the Astro-Tech 80ED being mentioned as something one of the respondents would buy instead. This version has the rack and pinion focuser, and optional guide scope clamp for imaging. William Optics RedCat 51 (Upgraded Version) + William Optics 48mm T-mount for Sony E-mount 2. I purchased one, but it is back ordered till February. 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. Greetings to all! I have for sale a near new, recent vintage Astro-Tech AT60ED. This high-profile stalk has a dovetail shape at the bottom for attaching it to finder scope dovetail shoes used on Stellarvue refractors and many others. Don't have an Astromart account? Click here to create one. Save Image. 8x Reducer / Adjustable Field Flattener for GT71, GT81, Z81 & Z103. I would get an Erect Image Diagonal for correct terrestrial viewing. 8X reducer/field flattener is designed for prime focus astrophotography with quality f/6 focal ratio apo refractors such as the Astro-Tech AT72ED and AT130 apo, it will also work well with Astro-Tech and other brand refractors in the f/5. 5. Tossed up between the Red Cat, the 60ED and a Sigma 180mm f2. Camera lenses are not really suited for deep sky photography. These include the Explore Scientific Twilight I, the Vixen Porta II, and the Sky-Watcher AZ5. 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. The TV-85 is a great scope for astronomy with it's increased light gathering but too big and heavy to carry. Switched from a SvBony 80ED to a new Astro-Tech 80EDT, apochromatic triplet telescope. Now some tubes will need a little extra felt, like the Astro-Tech 60ED. The Astro-Tech AT125EDL is an extension of the beloved 60ED and 72EDII. 1 lbs: 7. Pocket prep for now. 8 reducer for ED60. Sharpstar 400F5. 00. 00. View profile Send private message Share; Navigation contextPage 1 of 2 - At102edl mini review - posted in Refractors : It’s mini because my experience with refractors is mini ,however with all the speculation of how good the edl 80,102 and 125 would be , I can say I am very pleased with the 102. We've helped hundreds of thousands of people pick the right telescopes or accessories since 1979. in tandem with the MiniBorg 60ED for convenient RACI star hopping. All of the telescopes in the chart above fall under the listed payload capacity of the mount. 11/10/2023 06:06PM. buy. The WO Redcat is. 134K subscribers in the telescopes community. Match them up at the hardware store and buy a handful of extra washers while you are there. Theres two mounting screws on each side of the scope. The back focus is 55mm from the shoulder of the reducer to the. Brand. The 72 is half the price for only 10% less aperture. ASTRO-TECH 60MM PHOTOGUIDE REFRACTOR "The new Astro-Tech AT60GS 60mm guidescope with upgraded helical focuser makes highly accurate autoguiding of deep space astrophotos affordable for any astrophotographer. The EDL series is an extension of the beloved 60ED and 72EDII. For Sale. Formal-Garden-7412 • 22 days ago. FF130. Product Description. Zenithstar 61 II vs. 1-800-422-7876 questions@astronomics. - posted in Experienced Deep Sky Imaging: Here is my second test of new x0. The AT 115 is an f/7 (804mm), the SW 120 is an f/7. 447mm @ f/5. 130 mm. I'm VERY pleased with my AT115EDT. 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. The AT70ED is a brand new addition to the Astro-Tech line up, whereas the 60ED and 72EDII have been out for a. 2 V. The important performance updates come in the type of ED element combination and the type of focuser the AT102EDL is built around. While this Astro-Tech ATRF72 0. So, do I: --wait 3 months for. Length: 18" dewshield retracted, 21. Back to top #12 jcj380 jcj380. As you add equipment to the view, the details will appear below. This version has the rack and pinion focuser, and optional guide scope clamp for imaging. Page 1 of 2 - Vintage Lenses for Deepsky - posted in Beginning Deep Sky Imaging: Hi there ! Id like to ask for opinion here. Stars are generally small with an even focused field across the QHY8. I have an Astro tech 60ED scope and recently purchased an ATR8 0. At best, you can use a cropped sensor, mirrorless camera. 6x reducer in storage and the Borg are the Lego of. Bringing in an improved ED element to the multi-coated glass and paired with a focal length of 335mm and focal ratio of f/5. 5 (900mm). Aperture-wise is there huge difference in the amount of light that they are capturing? Is the price increase due to lens quality and construction. Page 1 of 2 - Astro-tech 130EDT or APM 140 - posted in Refractors : So just getting opinions, Ive decided I want to get a larger refractor, and I know the price difference between the two, its just a one vs one idea. A self-storing retractable dew shield slows the. → Equipment Discussions. An Astrozap focusing cap is a lightweight aluminum cap that fits over the front cell of your telescope. I am using a simple Alt Az tripod, and can have this set up ready in two minutes. VAT) Altair 70 EDQ-R F5 Quad APO Astrograph £1,150. The back focus is 55mm from the shoulder of the reducer to the. Not all apo’s are created equal. •. Click on the pics for a larger image. 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;. However I have not been able to use it for astrophotography yet because the field flattner for it is on back order. This Astro-Tech AT60EDP refractor astrograph has: • 60mm f/5 fully multicoated four-lens Petzval refractor • Two ED lens elements, FCD-100 and FK-61 • 44mm corrected image circle • amazing flat field astrophotographic capabilities • dual-speed 2. 00 £806. 4mm nozzle. Astro-Tech 60ED Unboxed Equipment Discussions. I fashioned a solar finder from an old white plastic aspirin bottle, which works perfectly. Astro-Physics. Astro-Tech AT60ED 60mm or Apertura 60mm FPL-53 Doublet APO Refractor - posted in Refractors : I am looking for a terrestrial scope that can also be used for a grab-and-go scope. Astro-Tech 60ED. Both have FPL-53 glass. Edited by james7ca, 02 June 2015 - 05:54 AM. The Astro-Tech ATRF60 reducer/flattener threads on the 60ED focusers. Astro-Tech 60ED Unboxed Equipment Discussions. I highly recommend it. 20. WO Zenithstar 61 APO $478. 8 with the optional Altair Astro 0. In my case the strehl was 0. We all have questions from time to time. Artificial stars at a. 10" Saddle Plate for Both D-Style and V-Style Bars (DOVEDV10) $240. Orion Versago II is another that would work fine. S. In summary, we are using Nyquist as a starting point, with a slight tweak, because we are typically sampling very small, circular, stars. (0. 00 £806. the flattener produces wonderful flat fields as well as a 41mm image circle. The AT60ED shown with a TeleVue Panoptic 24mm eye piece, a TeleVue Everbright 1. 83 (ex. The F-7 ED 102 is a good general use scope with low CA. The flattener is threaded for attachment to the telescope via a 54mm metric thread. This l. It is not too heavy and gives you a focal length of 288mm. AstroBin is an image hosting platform and social network for amateur astronomers and astrophotographers. It goes through numerous inspections, at the factory, at Tecnosky and Rupert at Astrograph also checks it out before dispatch. SWSA is very good at focal lengths below 200, for above, you need guiding to improve results. Page 1 of 2 - AstroTech ED80 vs Orion ED 80 for AP - posted in Refractors : Ok these are the scopes in my price range. Astro-Tech uses two ED (Extra-low Dispersion glass) elements in the optical design of the AT60EDP. ZW Optical. 2 oz with the rings and dovetail, 5 lbs 4 oz without rings and dovetail. $60. The field is very large and with a focal reducer such as the WO 0. Works great with these and similar models. 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. Our shop offers you comfortable online shopping, fast delivery times. I hope you guys will like it. These mount holes are 20mm apart, is this a standard size, or do I. SWAS70ED-OTA, plus Visual Bundle consisting of 17mm Eyepiece, Star Diagonal, RDF, Bracket / Stalk. The Astro-Tech reducer/flatteners thread into the focuser for a solid connection. This is in superb condition having been used on only a few occasions. I'd expect them to be similar. Altair's is almost the same name:Astro-Tech 60ED on Orion Tritech II tripod, StellarVue MV1 mount head: Maybe about a dozen pounds fully dressed? It is a true (for me) grab-and-go outfit, and can be carried outside and around the yard, as needed, with a couple of eyepieces in my pocket. Telescope N 150/750 Star Discovery P1 50i SynScan WiFi GoTo. I record a 35sec AVI file (using Asi 290MC camera) and process in Autostakkert! I am blown away by the results. Calculate the resolution in arc seconds per pixel of a CCD with a particular telescope. 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 SW 120 is slightly bigger. 8x reducer / flattener for the 60ED. 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. We carry all brands and products, like Meade telescopes, Celestron telescopes, and more. Guidescope Suitability Calculator. Includes the following; 6260 mini 60Ed, 7060 tube rings, 7857 helical focuser, 7604 extention tube, 7364 adapter,7920 adapter, 7317 eyepiece holder and 7885 . Back to top #13 HesiodAstro-tech AT72EDii 4. Astro-Tech . 9 specification likely results from a lens cell with a slightly larger entrance pupil). I am currently using the AT60ED without a field flattener with a crop sensor DSLR (700D) and have found that while it is usable, you want the field flattener. SV102ED, 102mm objective, f/6. 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.