The 2 inch focuser is extremely smooth and every screw has the non-mar. 25 inch diagonal an 32mm plossl will still show a 4. The focuser can rotate as well to help you get the perfect framing. While this Astro-Tech ATRF60 0. AT72EDII - posted in Refractors : I have a SW 120ED, but I do not consider it to be a G&G, or at least not a really easy one. When dithering with Asiair plus. See spectacular views of the sun with a solar filter. Reducer/flattener is somewhat pricier than just flattener. Unguided with a skyguider pro camera tracker. The AT70ED is bringing ED optics to you at a fantastic price. Feel free to give us a call if you have a question about your scope if it isn’t an Astro-Tech product. The AT60ED has very solid mechanics for an imaging scope. The Trifid Nebula. As mentioned above the 3-6mm Tele vue would be a good candidate. 0. You can crop out the soft edges. My old Sears 60mm refractor gave very sharp images, but not very useful for imaging. topic starter. 25" accessory adapter, both with compression rings: The precision-made rack-and-pinion focuser has dual-speed focusing. 0) teleconverter. WELCOME TO ASTRONOMICS Astronomics is a family-owned business that has been supplying amateur astronomers, schools, businesses,. Page 1 of 3 - Astro-Tech or Skywatcher ? - posted in Refractors : Hi, Im expecting a 10 reflector and Im looking at the refractors. Not sure if these made it to astronomics as the shipment you refer to, but fingers crossed. 1 William Optics. AT60ED as a travel scope - posted in Refractors : 16 x 9 x 7. $44. Joined: 04 Sep 2019. Lord Beowulf - Nov 09 2023 08:09 AM Refractors Deepskydad motorised Flat Panel, Any issues doing darks ? ribuck - Nov 09 2023 07:45 AM Equipment (No astrophotography) Horsehead Nebula. Same scope for around $200 less than the WO Z61. Color correction is really good, not AP Stowaway good but noticeably better than the 60ED, 72EDii, AT102ED and AT102EDL doublets I either own. 00. Most eyepieces dont play. . The website for the field flattener states "Backfocus from the rear shoulder of the AT60FF to the image plane is 54. According to the testing. IMG_0266. So a thought had occurred to me--take my small mount. $419. 5x and the TeleVue Delos 10. My previous views of M8,. Anyone using the AT60ED with dedicated reducer and getting round stars? - posted in Beginning Deep Sky Imaging: Ive owned an AT60ED for over a year now, and have enjoyed imaging with it the few times I have. 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. I have an AVX , AsiAir plus, AT60ed, Asi071mc pro, Sybony 60mm for guiding. Seems expensive. Tech Details. The Skywatcher base requires Allen wrenches to secure the. I think my copy has some defect, since. This Astro-Tech AT60EDT ED triplet refractor has: • 60mm f/7 fully multicoated apochromatic ED triplet refractor optics. 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. The 60mm, f/6 air-spaced doublet is fully multi-coated and composed of highly desirable low-dispersion FPL53 glass and a matching lanthanum element for. I hope you guys will like it. The problem: My guiding with the AT60ed continuously fluctuates between . Never even heard of Telescopes Canada before but they were prompt and it only cost $7 more than US list price. . The reversed foot allows the focusing knobs to be oriented horizontally. 75x range. Add new. This can be bolted to a vixen or losmandy dovetail for use as a stand alone telescope, or it can be mounted in a guide shoe and used as a very high quality guide scope. Chondrites (Carbonaceous) CI (Ivuna-like) CM (Mighei-like) CO (Ornans-like) CV (Vigarano-like) CK (Karoonda-like) CR (Renazzo-like) CH (high Fe. I also know that using a 40mm eyepiece at f/5 will reduce my effective aperture, but the resulting effective aperture will still be equal to or larger that the AT60ED at equal true field size. I like to have motors on the focuser of all my scopes and manual camera lenses so that I can do critical focus at the computer during my imaging sessions. 00. What I could use help with, is other than the flattner, and t-ring specific to my camera body are there any other accessories will be needed to hook this up to my Canon full frame and APS-C bodies?Piggyback on an Evo 8 - posted in Celestron Computerized Telescopes: I’m curious about piggybacking my AT60ED refractor on my Evo 8. My CEM70 is adequate for the OTA but its just bulky and heavy to me. Loc: 3rd Stone from the Sun. I got a recent sample of AT60ED and I haven't got a chance to test it out due to weather, out of town etc. I would get an Erect Image Diagonal for correct terrestrial viewing. Astro-Tech AT60ED Field Flattener. Loading preview. The AT60ED has a supplied ring/clamshell with the. Does anyone know about this cheaper 72ED am thinking of getting one if it is a good scopeOne alternative to perhaps consider - Keep the LX200 and piggyback a shorter focal length refractor (something like an Astro-Tech AT60ED or AT72EDII) with a small sensor and small pixel camera, for example a IMX224 or IMX385 sensor. Business, Economics, and Finance. Remix Model. 2k either way you go. The AT60ED isn't just a great visual scope. Refractors. But I do not like the Petzval design. I signed up at Explore Scientific just a couple of. The negative is that it is only 60mm of aperture, so that greatly restricts resolution for planets as well as how dim one can go for DSO's. 8X reducer/field flattener is designed for prime focus astrophotography with the Astro-Tech AT60ED, it will work with other variants of the same optical tube. For the mounting foot, I use an Astronomics Astro-Tech 7" universal dovetail plate. 25" Solarlite Film Solar Filter. 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. Works slick. Mount Type: Two 1/4-20 threaded holes on foot with spacing between holes: 30mm. Smaller size and good optics are priority over budget. No need for a Telrad. 3. Even using a 1. Download Center. Reviews. 7x (230mm @ f/3. Visually the AT60ED is well configured for use with 2" and 1. Comes with the Astro-tech Camera Angle adjuster. • durable nylon soft carry case. As to field curvature, thats life in the fast lane using a 360mm, F/6 telescope. Get great deals on tube rings, mounts, and telescopes at Astronomics. - 60mm is more compact. First Light Image for a new Astro-Tech AT60ED telescope. Sometimes when I press the coarse focus I can see the focuser visibly move out. The AT70ED is bringing ED optics to you at a fantastic price. (and to clarify this is not. The AT60ED with the reducer/corrector and a ZWO IR block filter works great for imaging at F/4. Also looking at Televue TV60, nice but too expensive for me. So, subtract the thickness of the t-ring from 9. 8 with that combo. - posted in Eyepieces: I am in the process of doing a total revamping of my eyepiece collection, of which I have too many, reducing the herd. My experience is that a $100 two inch dielectric is a safer investment than any of the 1. The AT152EDT comes with a 3. Sharpstar 60ED Astronomical Telescope $366 / $436 with Flattener. 2mm DeLite is that while the 17. I have used the original packing foam and box, but that isnt a great fit for. 44 TFOV. Posted 18 November 2020 - 01:19 PM. Still seems like too big a cost differential, though. And don't let the lack of case for the AT dissuade you, it will easily fit into an 4800 Apache case available from Harbor Freight. g. Such a device is so oversized compared to the host telescope as to be absurd. Second scope recommendations - posted in Experienced Deep Sky Imaging: Hi Need ur guidance , i currently use AT60ed with 0. The 130EQ has a weak mount and flawed spherical optics. Posted 30 August 2021 - 02:24 PM. Im using the TeleVue PowerMate 2. Hughes Thompson. Verified Purchase. 75 pound AT65EDQ measures a very compact 13" long with the dew shield retracted, and is only 14. 8 with its reducer. This is my 2018 AT60ED decked out in William Optics finery. Perfect star images across an APS-C chip. 3. At that time I started a thread titled Anyone with an AT60ED to ask a few questions about my new scope, and. Reviews. Length: 18" dewshield retracted, 21. The back focus requirements. Each frame taken with the camera is around 132 MB in size. Joined: 26 Jul 2020. The handle will help making set up much easier as you have a solid part to grab onto and not just the tube. Ive only used it with the flattener, but have had no issues getting round stars on an APS-c sized sensor with the flattener. It’s tall enough to use comfortably, can detach for packing and keep alignment when reattached, and is simple to use with the concentric circles. WO ZS61 or AT60ED? - posted in Refractors : After 1 1/2 years of frustration with extreme field curvature and optical axis tilt of my ES ED80, finally I decided to go for a new scope for wide field imaging. I havent been able to get a response from anyone at Astronomics after I ran their suggested test of rotating the camera, so I thought Id run these by anyone here. AT72II - posted in Refractors : Hello! Please, does anyone know how does compare AT60ED and AT72II from Astro-Tech? Im looking for a starter refractor and I understand the 72 gathers more light but I was wondering whether there are any other differences? Perhaps one is shaper, corrects aberration better, . (Posted on 10/24/2019) Review by: Matthew . I am looking at getting the Astro-Tech AT60ED 60mm f/6 FPL-53ED and Lanthanum Doublet. You can budget for a 3-4mm eyepiece in future or get a barlow/powermate/focal extender. The Z61 is the most portable telescope ever made by William Optics, a company with a reputation for building beautiful astrophotography refractors. 5). Social. . Page 9 of 37 - AT60ED: Something Small From Our Sponsors - posted in Refractors : Ready for the evening! Already took a quick look at the moon as the sun started setting. How to attach filter between field flattener and T-ring - posted in Beginning Deep Sky Imaging: My imaging train is Telescope AT60ED/Astrotech 2inch Field Flattener/T-ring/EOS EFtoRF Adapter/Canon R I have two issues: 1) Looking at the images, I feel the back. The Starblast has a focal length of ~450mm vs 360mm for the AT60, so the Orion is capable of marginally higher magnification for lunar/planetary viewing. I bought the 0. My AT60ED is a finder set into rings on my 152mm f/8 apo. 8x reducer in my Apertura AT60ED. " The 2" barrel of the fully multicoated dual-element Astro-Tech field flattener inserts directly into your scope's 2" focuser drawtube. The objective is an F/7 doublet, with either FPL51 or FK61 glass for the ED element. For the planets, you need to focus on a particular detail and try to catch good moments of seeing to adjust the focus. 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. EAF Manual EAF Manual EN V1. 2mm DeLite gives you a 3. The 360mm focal length of the AT60ED means that the biggest factor is field curvature in very wide true fields of view. How do I go about making flats in a non-complicated way?Figure 2: Relationship between HFOV, Sensor Size and WD for a given Angular FOV. Read more. But one thing I havent accounted for is if were packing for four people, taking my mount and the NP101 might not be possible. The AT4060 is a cardioid tube condenser microphone with a transformer-coupled output circuit. doc 3Version 1. 34mm and that is the thickness of the. Newbie AP Question - AT60ED to HEQ-5 Pro - Dovetail - posted in Beginning Deep Sky Imaging: Hello all. 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. With a 24mm. 5mm Morpheus vs. e. When I purchased the AT60ED, I also bought the WO front cap/bahtinov mask, the WO Red finder scope shoe and WO 50mm Red finder scope with 50mm rings and added the Explore Scientific 2" 99% dielectric diagonal. 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. At the moment I am unable to afford for a better built triplet APO so I decided to go for a smaller ED doublet with FPL 53 elements. One of the possibilities is the RedCat51 from William Optics. Reviews. The AT60ED now comes standard with the Camera Angle Adjuster and the finder shoe. •. AFAIK, the Astro-Tech Finderscope Mounting Shoe (ATSHOE) is the only finder shoe that will fit the AT60ED. Refractors. 8X reducer+flattener for the AT60ED. The 18. As a result I cant do flats in Fire Capture. I don't want to use the AT60ED as a guide scope. AT60ED vs. I don't know of any field flattener that performs well in the AT60ED for visual. Avoid. 7 Orion 80ED @ 600mm is 1. com. I used to have a small AT60ED rig on an ARCA mount, and the stiction while balancing may cause you (as it did to me) to loosen it a bit too much, and you may have your scope fall out (as mine did, to the ground). My current image train is (AT60ED > ATRF60 Flattener > ZWO filter try and. A groove machined into the field flattener barrel engages the thumbscrew or compression ring of your focuser to act as a. Posted 13 February 2021 - 04:40 PM. So until then I am stuck using scope uncorrected. My AT60ED works great with the Baader 2 inch mirror diagonal. • a rotating dual-speed 2. I just received an email about the iExos system being on. I reversed the foot on my AT60ED and attached it to a 7 inch dovetail. Astro-Tech AT60ED and AT72EDII Black Friday Sale; Universal Astro Sale; Various Used and Demo Scopes and Mounts; Astro-Tech College Tuition Sale; iOptron 20% Off Sale While Supplies Last; Meteorites. Page 3 of 4 - TV-60 vs. $99. Or they'll want to upgrade the inexpensive mount that came with their prepackaged. So, no DSLRs with the Evoguide and at the moment, there is no way around this. Yeah, I'm excited about the AT60ED. Focal Length: 360mm. Dual speed 2" rack-and-pinion focuser with 2" accessory holder and 1. We carry all brands and products, like Meade telescopes, Celestron telescopes, and more. 38 degrees. • a heavy duty nylon carry case. Back to Beginning Deep Sky Imaging · Next Unread Topic →. AT60ED as a travel scope - posted in Refractors : 16 x 9 x 7. I might have bought the new FRA 300 if a reducer were available for it, to get shorter than 300mm FL. While this Astro-Tech ATRF72 0. 2mm DeLite was nearly sharp to the edge. This camera is very high resolution at 60 megapixels. tools CCD suitability calculator. Unless you want a super-finder, or are doing astrophotography, a 2" focuser on a 360mm scope is super-wide. Add in an L-eXtreme filter for taking images of emission nebula during a full moon in light polluted skies! Edited by 72Nova, 15 July 2021 - 07:52 AM. ASTRO-TECH AT60ED 60MM F/6 FPL-53ED AND LANTHANUM DOUBLET. The camera side of the reducer uses 48mm T-threads to connect to a T-ring and camera body. . $69. Ive been using the screw (i think its 1/4-20) on the top of the dec bracket of the SA directly into one of the two holes in the base of. 8" sensor has an array of 3840 x 2160 pixels that are 2um square. WO Zenithstar 61 APO $478. Astro-Tech AT60ED 60mm f/6 FPL-53 ED Doublet $369. From the thought to image the sun to see if the ASI224 and AT60ED combo could capture the entire disc, pulling the scope buggy AZ/EQ mount out, mounting the AT60ED, leveling the OTA, Solar System alignment and focusing was less than 10. AT60ED vs. But the. You can still get good images, but you would need to. I bought the AT60ED from Astronomics about 2 years ago and it has FPL-53 glass. Gonna be about $1. Posted 30 August 2021 - 02:24 PM. Both have FPL-53 glass. But now that I attached the Reducer, I get these weird star patterns, and it doesnt make sense. Joined: 06 Mar 2016. Reviewed in the United States on September 13, 2020. com shows all 3 scopes have roughly the same FOV, without speaking. Page 24 of 37 - AT60ED: Something Small From Our Sponsors - posted in Refractors : Its a wide field monster. 00. We could not detect a hint of spurious color (chromatic aberration) in our evenings testing the AT60ED. So I am considering. 25" accessory adapter, both with compression rings: The precision-made rack-and-pinion focuser has dual-speed focusing. I bought the WO CAT tube ring/Finder scope rail a few months ago. 2. I thought about the WO ZenithStar 81, but the difference between the 81 and 73 is just 8mm or roughly 1/3". Yeah, I'm excited about the AT60ED. Even though I can achieve a 7. I have a huge backlog of data that I need to process and recently have been having fun doing that using Sirilic/Siril and AstroPixelProcessor. stars). Posted 16 January 2021 - 11:32 AM. The ZWO ASI678MC is a fantastic entry level ZWO camera you want for planetary imaging. 4x (189mm f/2. I remember those and the pink ones I have a pink one. When I was imaging in Florida, in much more mild. But they have another 72ED for $399, do not know the difference. The Astro-Tech AT60ED, with iOptron Cube Pro Alt-Az GoTo mount, Explore Scientific 2" diagonal, and the TeleVue Panoptic 41mm eye piece. First light with the Astro-Tech AT60ED - YouTube. I tried it out this evening and I cannot achieve focus. It’s $949. 6x flattener/reducer for an effective focal length of appx 216mm I am leaning towards the AT60ED/StellaMira combo for the following reasons: 1. Dual speed 2" rack-and-pinion focuser with 2" accessory holder and 1. I got the Altair astro version since it came with an optical test report. The focal reducer has a back focus requirement of 55mm. PS there's a dedicated flattener for AT60ED. An alternative to the AT60ED might be the Sharpstar 61EDPHII. Page 26 of 37 - AT60ED: Something Small From Our Sponsors - posted in Refractors : All basically the same. In a color camera setup, the tilt plate is attached to the camera directly. Taking pictures of the easier to find targets such as Andromeda, North America nebula, and the like is easy and I can manually find them within minutes. Page 2 of 37 - AT60ED: Something Small From Our Sponsors - posted in Refractors : I stay corrected, yes, WO offers the case as an optional - not included - accessory. Scope/Lens: AstroTech AT60ED w/0. Obviously the RedCat 51 is a class act and Ive heard good things about the Raptor 61, too. . com and they have no idea. ago. $69. I like having a natural orientation for the field of view, particularly when observing at low power. 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. I can verify that the TSFLAT2 from Teleskop-Express does NOT work well for visual . You can buy the 0. Mine rides on an AZGTi in eq mode with a 533mc. 8x reducer that I already had for my AT72ED (version 1) and noticed that the corners of my images were much worse. Its a little of topic,. The AT60ED is excellent for sure. I dont know where to begin on figuring out which of the two provides the most aperture and magnification with my PVS-14. Love it! I could probably put the tripod, scope, and full. The 80-ED has a little bit of false color, but not bad, and. It's designed as a portable mount, and that payload capacity is quite. The Astro-Tech AT60ED is priced at $369US and comes standard with a 2″ to 1. Effect of barlows / field flatness for AT60ED solar imaging - posted in Solar Observing and Imaging: Ideally, Id like to image the 2024 total solar eclipse using my NP101. While I wait for astronomics to deliver my scope, I would like to understand if I really need to also purchase a 0. 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. Cameras: ZWO ASI120MM Mini, ASI224MC, ZWO290MM Mini, ZWO ASI294MC Pro, Canon M6 Mark II. 4KidsOneCamera • Certified Helper | Astro-Tech AT60ED | Sky-Watcher Quattro 150p •. Refractors. Once the required AFOV has been determined, the focal length can be approximated using Equation 1 and the proper lens can be chosen from a lens specification table or datasheet by finding the closest available focal length with the necessary angular. Scopes: ES ED-102 FCD100 CF, ZWO Mini Guide Scope, Astro-Tech AT60ED, Askar FMA180, Sky-Watcher Skymax 102. 63x reducer Exposures range from 1/100s to 1/4000s at ISO-100 to ISO-800 Thousand Oaks Optical solar sheet in homemade filter hat for both telescopes No processing done on the images aside from cropping and fitting into the grid Thanks for looking!Astro-Tech AT60ED Imaging Cameras Canon EOS 550D / Rebel T2i / Kiss X4 (modified) Mounts Celestron Advanced VX Accessories Astro-Tech . The 18. Page 18 of 37 - AT60ED: Something Small From Our Sponsors - posted in Refractors : These were my thoughts exactly. Following- I started imagining with azgti, At60ed, asiair pro and dslr. I use the Star Adventurer 2i with the AstroTech AT60ED and it works incredibly well, when I can find my target. 25" long with it extended. retired). Resolution is still good at 1. For example, the fully-multicoated. Page 17 of 37 - AT60ED: Something Small From Our Sponsors - posted in Refractors : If you are talking about the type of visual reducer that threads into the barrel of an eyepiece, it should work (since they generally work with every other type of scope), although I dont think the images are going to be very good. We all have questions from time to time. • 44mm corrected image circle. Page 22 of 37 - AT60ED: Something Small From Our Sponsors - posted in Refractors : Im sure its in the long thread but, if so, I missed it. Apertura 60mm f6 field flattener options - posted in Refractors : I ordered my Apertura 60mm f6 scope last month. 124K subscribers in the telescopes community. Posted 16 January 2022 - 02:12 PM. Page 1 of 2 - AT60ED - pinched optics? - posted in Beginning Deep Sky Imaging: Im getting very strange looking stars in my images and Im pretty convinced its pinched optics relating to temperature. 9×180 sec, QHY183C at Gain 20, Offset 0, -15C cooling, UHC filter, Astro-Tech AT60 ED at F/4. 0. Last night was the first night I got a chance to use the combo, and was planning to image the Witch Head nebula. I purchased one, but it is back ordered till February. My father was at the office for 6 hours yesterday getting all the manuals finished up. 25 will only be used when doing visual. • Can be used in both autofocus and manual modes. Cameras: ZWO ASI120MM Mini, ASI224MC, ZWO290MM Mini, ZWO ASI294MC Pro, Canon M6 Mark II. 8mm" I have the Celestron 8SE with a focal reducer/corrector. 25 and AT60 won't be guiding each other, so flexure won't be an issue. From the thought to image the sun to see if the ASI224 and AT60ED combo could capture the entire disc, pulling the scope buggy AZ/EQ mount out, mounting the AT60ED, leveling the OTA, Solar System alignment and focusing was less than 10 minutes. And when it does come back in stock, Ive always missed reordering it. The same scope is sold by other vendors, like William Optics, for a lot more money. It works well in all the achros and ED/APO's in my sig that have 2" focusers. * Mount controlled via Astroberry. 4X is absolutely stunning for panning the sky and milkyway, or vewing very large DSO's. Help with achieving a flat field with AT60ED - posted in Refractors : I purchased a used AT60ED about 6 months ago and I havent yet had any luck with achieving an acceptably flat field with this scope and Im hoping someone might be able to help me out. It looks like the telescope now comes standard with the camera angle adjuster. Astro-Tech AT60ED 60mm f/6 FPL-53 ED Doublet $369. 25 limitation as to the focuser. I am using a Astro. It seems like it’s similar, and yet quite a different design than their. AT60 Vixen-style rail/bracket/mounting suggestions - posted in Beginning Deep Sky Imaging: I have the AT60, but its a chore to balance it in dec with the shoe finder mount. I got a recent sample of AT60ED and I haven't got a chance to test it out due to weather, out of town etc. 8. My AT60ED, on a Vixen Mobile Porta, showing the Astro-Tech universal dovetail plate (dovetail bar): The intervalometer in the D5300 will only allow up to 30 second maximum exposure. 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. 2. The video above shows every step of capturing and processing the Pinwheel Galaxy (M101) with a DSLR, small telescope, and an iOptron SmartEQ mount. I haven't tried it in a while but seems like I have to use a small extension tube with my Sony a6000 to get it to reach focus. From the thought to image the sun to see if the ASI224 and AT60ED combo could capture the entire disc, pulling the scope buggy AZ/EQ mount out, mounting the AT60ED, leveling the OTA, Solar System alignment and focusing was less than 10 minutes. I use this for guiding and polar aligning with a Celestron AVX and my AT60ED. I would put a link for this scope, but then it would be moved to another forum, so I won't. 9 specification likely results from a lens cell with a slightly larger entrance pupil). 95. 8X reducer/field flattener is designed for prime focus astrophotography. You get a 2" Rack and Pinion focuser with a microfine 11:1 fine-focusing ratio finished in our Aston Martin Grey trim. Its been working quite well with my 1x Flattener. Posted 03 October 2020 - 07:30 PM. e. I know the reviews for both of these are real good, and the opinions are usually that these are a. 800-422-7876. Thoughts? Clear Skies, PhilUp and Down Guiding - posted in Beginning Deep Sky Imaging: Hi everyone, I need help. Discontinued Product ZWO EAF ( Electronic Automatic Focuser) $199. Mounts: Rainbow Astro RST-135, ES iEXOS-100, SkyGuider Pro. With your camera, the AT60ED, and good polar alignment, you could get 40-60 seconds unguided before streaking (motion blur). This Astro-Tech AT70ED refractor has: • Single ring with a foot that has a 1/4" 20 thread hole for easy attachment to a dovetail. I can verify that the TSFLAT2 from Teleskop-Express does NOT work well for visual .