Replacement secondary mirror telescope. The secondary usually has about 2.
Replacement secondary mirror telescope I can't find the specs of it anywhere nor do I know where to buy a replacement within USA. The secondary assembly consists of 3 main parts. Spherical Primary mirror Mirror Diameter: 203mm Focal Length: 750mm Focal ratio: 750/203 = 3. Designed to support clear and consistent alignment, this essential replacement part ensures your 6-inch Schmidt-Cassegrain Telescope performs at its best. 00 $1,309. And, as was said in a previous post (or the thread you linked to), a 3-vane spider will produce three bright, and three less-bright spikes, for a total of six diffraction spikes. The secondary mirror obstructs part of this light, slightly dimming the image by the equivalent area that the secondary mirror Sep 22, 2020 · NEW 203mm Primary and Secondary Telescope Mirror set. 0. 00 on holders up to 4. 5) and large, heavy secondary mirrors/holders. GSO Elliptical Secondary Mirror The secondary mirror makes all the difference when you demand the ultimate in visual and astrophotographic performance from your telescope. All of the mirror surface quality over 1/12 wave RMS at the least, typically better. 95. Even dropping a little bolt down inside is no fun to retrieve. Remove the secondary mirror with the holder from the secondary mirror spider. This task is usually accomplished by adjusting three screws on the secondary mirror housing to tilt the secondary mirror on its mounting plate until the image at the eyepiece appears undistorted. Protostar curved mounts are available for secondary mirror sizes up to 2. Our telescope mirrors are made by our own computer-controlled method. This is a novel way of securing a secondary mirror to its support that will enable easy and accurate adjustment of the mirror in terms of offset and rotation Jan 31, 2013 · You can get replacement mirrors, and a 4. 5 focal ratio 88mm secondary MIRSET1645 $1,459 Purchase from Farpoint: 12" Mirror Set 304mm aperture May 4, 2014 · Replacing a secondary mirror advice - posted in Reflectors: Hi, Im needing to replace a missing secondary mirror on an old scope. starizona. Primary Mirrors - Mirrors & Holders - Parts & Accessories | AgenaAstro. Discover why our secondary mirrors continue to earn rave reviews from the most discerning customers. 5"(please specify amount of offset). Dimensions and sizing of secondary holders This kit comes with replacements for both the adjustment and locking primary mirror knobs. This is to prevent your tube's internal eddy currents and turbulence from interferring with your incoming parallel light path and distorting your images. 3125". Add to Cart. Ranging in aperture from 6” to 16” and offered in various f-ratios, these mirrors are made from optical grade BK-7 glass. com Restore your telescope’s optical precision with the Celestron Secondary Mirror Housing Kit for 6" OTA. This article gives an example of a Newtonian telescope secondary mirror's replacement, offset calculation, collimation, star testing. This is not a spider mounting requirement. 16" Mirror Set 406mm aperture f/4. With the FastFocus system in place, any Fastar Oct 21, 2009 · The secondary mirror holder and spider on my 12¾-inch truss-tube Dobsonian is made with scrap wood, a few nuts and bolts, and a stainless-steel ruler. 4. All AstroSystems secondary mirrors are coated with enhanced aluminum, giving 95-96% reflectivity and long coating life. 78 $1. Below is our selection of Telescope Secondary Mirror . The curved-vane secondary mirror holders I use on almost all my telescopes never fails to excite curiosity. Stable collimation: No more constant readjustments—your optics remain perfectly aligned, even after mobile setups. CNC-milled secondary mirror spider made of matt black anodised aluminium (EN AW-6061), suitable for Skywatcher 200p, 200PDS & 8" Quattro. It Blue rectangle is the clip securing the mirror to the secondary mirror assembly (black). The current secondary mirror of the KECK telescope has a diameter of Ø1,4 meter, and a convex optical surface. At Orion Optics UK we pride ourselves on having some of the finest optical technicians anywhere in the world. How to Replace, Offset, and Collimate a Secondary Mirror . All mirrors have a reflective aluminum coating with a reflectivity of 92-93%. 60" and solid tubes with inside diameters up to 15-inches. 6" and larger holders. Optec's FastFocus Secondary Mirror Focusing System with FocusLynx Controller has proven itself to be a singularly unique solution to the limited back-focus of the Celestron EdgeHD telescopes. Figure 2-1 shows the concept design of the ASM based on TNO’s hybrid variable reluctance actuators that might replace the current Aug 15, 2021 · Best secondary mirror screw replacement? - posted in Reflectors: Id like to change the 3 collimation screws on the secondary mirror on my 8 Skywatcher dobson. Most people know that the principal benefit of the curved spider is spike-free … Continue reading "How To Build A Curved-Vane Manufacturers & Suppliers of Astronomical Telescopes in India Serving Amateur Astronomers Since 1976 GSO 50mm Secondary Mirror ₹ 4620. I picked up a orange C8 serial # 817800. Matching screws are included in the delivery. The four black lines are the vanes that hold the secondary mirror assembly in the centre of the tube. When ordering, provide the information described on the ordering information page. This is so when you drop the wrench or a bolt - it won't free-fall down the inside of the tube and strike the primary-mirror. Price, product page $139. Has anyone built it differently? What if lets say for example you had few sticks/toothpicks GSO 8" f/6 Parabolic Primary and 50mm Secondary Telescope Mirror Set . The secondary usually has about 2. Sale price $400. Each optical surface is tested up to 29 times as it passes through its many processes of being turned from a blank piece of glass to a highly accurate figured mirror or lens. I think its from the 80s. Jun 30, 2020 · Telescope Reflector Main Mirror 203mm with Secondary Mirror 70mm, Newton Reflector Spherical Mirror for DIY Astronomical Telescope Accessories CYZW D203F750 Telescope Accessories Reflector Spherical Primary Mirror + Secondary Mirror DIY Astronomical Telescope Mirror Set Jun 29, 2022 · Telescope Reflector Main Mirror 203mm with Secondary Mirror 70mm, Newton Reflector Spherical Mirror for DIY Astronomical Telescope Accessories CYZW D203F750 Telescope Accessories Reflector Spherical Primary Mirror + Secondary Mirror DIY Astronomical Telescope Mirror Set Jul 28, 2021 · Page 1 of 2 - Celestron C8 Secondary mirror damaged. ZOC now celebrates over 25 years making what is arguably the highest caliber Newtonian primary mirror in the premium telescope industry. This secondary mirror is mounted on a tip/tilt stage for fast corrections. CYZW D203F750 Telescope Accessories Reflector Spherical Primary Mirror + Secondary Mirror DIY Astronomical Telescope Mirror Set SVBONY SV181 Rack and Pinion Focuser, 1. This is the perfect size for a 114mm f/8 optical tube or a 6" f/10 or f/12 system. Bobs knobs isnt an option where Im from so I wonder if regular screws will fit. The performance of a telescope is mainly dependant on the quality of its Primary Mirror. This Telescope grants a primary Mirror made with a hardness and a clamp range of 0, it imparts a Mirror life of 3 years and a power of 25 power. 66 $ 43 . Spiders are custom-made for your tube's inside diameter. Try to index the secondary to the corrector plate before removing it, by placing a scratch in the front of the secondary carrier at the same place as your corrector plates index mark. The semi-circular arch symmetrically spreads diffraction around bright objects in the field (see diffraction comparison image ). Shop for the primary mirror for your scope from your favorite brands in varying sizes, available here at Agena AstroProducts. Description Compatibility Specifications Package Contents Resources Software Fast-Focus Secondary Mirror Focuser for the C-14 / C1400 EdgeHD telescope. All mirrors have an aluminum reflective coating of 93%. Follow these instructions carefully and you will avoid the common problems encountered when installing the secondary mirror. 12 Items GSO's parabolic primary mirrors are perfect for those who want to build their own telescopes or replace mirrors in older ones. 99 delivery Aug 29 - Sep 12 How to replace, calculate offset, properly collimate and star test for astigmatism a secondary mirror of a Newtonian telescope using the simplest methods For maximum performance, the primary and secondary mirrors of your Schmidt-Cassegrain telescope (SCT) must be properly lined up, or collimated. Unscrew the secondary mirror with the secondary mirror spider from your Newtonian. The optics we produce are world renowned for being among the best available. Open Box · Unbranded. Cam After eight years making mirrors and telescopes as an amateur, including four years teaching telescope making, Carl turned professional and began the Zambuto Optical Company. I cant locate the exact specs for the exact scope anywhere online (a Meade 127NT). Accessories, All, Brands, Kson Electronics, Parts, Secondary Mirrors Replacement Secondary Mirror 38 x 27 (1. The secondary mirror remains on the holder. Free shipping Make your own telescope or upgrade a mass market telescope with Sidereal Trading selected telescope parts. Secondary size (mm) SKU. It's not uncommon that a low quality, small or a badly attached secondary (diagonal) mirror ruins a telescope with otherwise perfect optics. GSO offers secondary flat telescope mirrors to match the complete telescope set request. Im not sure if Parks Optical 8 Inch F/6 Parabolic Telescope Primary Mirror & Matching Secondary. Sky-Watcher NEQ6 Pro Motor Control Board Replacement Sep 19, 2021 · The thicker the spider vanes / secondary mirror supports are, the more diffraction you'll have. The Primary Mirror is also known as the Objective and is the heart of a good telescope. Hello! My telescope is a Celestron Starsense Explorer 130 DX and the secondary mirror is badly damaged. Red – the three primary mirror clips. Ive been trying to do some research and not had a lot of luck finding answers. These features allow proper tensioning to hold accurate collimation with even the heaviest secondary mirrors. This allows you to remove the secondary mirror and replace it with a lens assembly known as HyperStar (www. Choose the number one name that leading amateur astronomers have relied on for years – Antares Optics. 00 Save $909 Each secondary mount kit includes the spider, mirror holder, collimation tool, mounting screws and instructions. Screw the Artesky front ring with the secondary mirror spider to your Newtonian. $11. Superior performance for new or retrofitted telescopes. Central dark grey circle with four black lines – this is the secondary mirror reflected in the primary. These upgrade knobs are larger than the stock hardware, and like the secondary mirror collimation knobs make adjusting/ dialing in your scope much easier. The short axis refers to Jan 14, 2023 · It's true that this line of telescopes has unusually large secondary mirrors as Newtonians go, which inevitably degrades the quality of high-power images every so slightly. Our Price: $275. Offset is included in the price of 5" and larger holders (please specify amount of offset). In Stock. Built to Telescope Accessory Set Primary Mirror Holder Sub Mirror Holder for D150F750 Astronomy Telescope 153mm Primary Mirror 35mm Secondary Mirror Telescope Camera $116. 2. View as Grid List. 69 Mirror substrate: Float Glass Reflectivity=86% Optical quality: Diffraction imaging limit of 1/4 λ Secondary Mirror: Glass, 100mm x 70mm Mirrors Aluminized: 89% SiO2 surface aluminized The ‘Primary Mirror’ is the principal light-gathering surface of a reflecting telescope. Obviously the cheaper option is what I would like. This very smooth mirror surface results in excellent optical performance with practically no light scatter. 5 focal ratio 88mm secondary MIRSET1645 $1,459 Purchase from Farpoint: 12" Mirror Set 304mm aperture GSO's parabolic primary mirrors are perfect for those who want to build their own telescopes or replace mirrors in older ones. 98. 00. Sep 25, 2020 · Meade secondary mirror replacement? - posted in Meade Computerized Telescopes: Hi I wondering if you can help me, I am looking for a replacement Secondary mirror for a Meade 10 inch Newtonian reflective starfinder 10 inch telescope As the coating is compromised on my Dads telescope and am wondering what the best course of action would be. S. Made in the U. 78 $ 116 . The same careful alignment mentioned in the secondary mirror collimation knob section. Whether you're capturing lunar detail or exploring deep-sky wonders, it maintains image sharpness and structural integrity. Price: Notes: 28. It also provides a resolution of 10 x and a field of view of 226 degrees. Our elliptic flat mirror has the same high optical quality as our parabolic primary mirrors using BK7 quality glass. Secondary mounts for common mirror sizes. Mar 12, 2024 · The primary mirror in the telescope focuses the light which forms a smaller concentrated image that can then be magnified by an eyepiece or recorded on a camera sensor. 98 $ 139. A large black spot appears in the eyepiece. Don't see your mirror size below? Shop for elliptical secondary mirrors for your telescope from you favorite brands, available here at Agena AstroProducts. 6 out of 5 stars. Sharper, more precise spikes: Our CNC-machined secondary mirror spiders ensure evenly aligned, razor-sharp spikes and feature an ultra-matte surface to minimize reflections. 95 GSO's parabolic primary mirrors are perfect for those who want to build their own telescopes or replace mirrors in older ones. G02803V . I think dropping a hex key into the telescope is just a question of time . 5" need not break the bank (a skywatcher 4. A. com), attach a camera (in the case of the 6SE it needs to be a very small camera) and image at approximately f/2. 25 inch, Newtonian Reflector Focuser for Newtonian Reflector Telescope 1" Minor Axis Telescope Secondary Mirror Replacement Part for 114mm Scopes - NEW. Telescope Accessories Main Mirror D114F900mm with Short axis Secondary Mirror 25mm, Newton Mirror Spherical Mirror (Color : D114F900 25fujing) Price, product page $43. Free US Shipping. GSO 8" f/6 Parabolic Primary and 50mm Secondary Telescope Mirror Set . Apr 9, 2020 · Package includes: 1PC D114F900 Primary mirror 1PC secondary mirror Mirror D114f900 spherical primary mirror and 70mm short axis secondary mirror D114f900 concave spherical mirror and 25mm short axis secondary mirror Concave spherical mirror, caliber: 114 mm, focal length: 900 mm, surface aluminized and protective film. Can I buy a replacement? - posted in Classic Telescopes: Hi Cloudy Nights. There is a scratch with mirror loss on the secondary. 5″ x 1″) (for 100mm or 102mm reflector) $ 44. 00 Regular price $1,309. Its a pain to collimate the secondary with the factory allen head screws. Direct replacement spiders 4-vane Newtonian spiders 3-vane secondary mounts for common imported mirror sizes. But the secondary obstruction is much the same as for an SCT, and SCTs make perfectly good planetary scopes. A 12" mirror should have a minimum 14" ID tube, 18" mirrors should have a minimum 22" ID tube and 30" mirrors should have a minimum 36" ID tube, etc. This secondary mirror spider is manufactured on a modern CNC machining centre. Does anyone know of a source for a replacement mirror? Thanks for your help. The main considerations for purchasing a Primary Mirror are as follows: Need a replacement secondary mirror or building your own telescope? This is what you get:1" minor axis secondary flat, coated - spider is not included. Secondary Mirrors - Mirrors & Holders - Parts & Accessories | AgenaAstro. 1" Minor Axis Telescope Secondary Mirror Replacement Part for 114mm Scopes - NEW. A 150mm diameter optic has an area of 1767cm. 203mm DOB Telescope Primary Mirror of Newtonian Telescope with 40mm Secondary Mirror, Focal Length 1600mm. Proper installation of the secondary will eliminate astigmatism from a pinched mirror, severe coma and diffraction from poor collimation and loss of image illumination from improper mechanical Direct replacement spiders 4-vane Newtonian spiders Curved secondary mounts Cassegrain secondary mounts Flocked Light Trap Mat'l Hi-tack flocked light trap Dec 18, 2021 · Spider and secondary mirror ALTERNATIVE? - posted in ATM, Optics and DIY Forum: Hi, I wonder if anybody came up with an alternative to how secondary mirror is installed in Newtonian telescopes? I find the typical design of spider with 3 collimation and 1 center screw very cumbersome (at least for now). Aug 11, 2017 · If you are using any tools, Allen-wrench or such, do the deed with the telescope either level - or with it's nose (the front of the tube) pointing somewhat down. 33. Jun 13, 2023 · Backyard Universe Upgraded Secondary Mirror Spider for Sky-Watcher 200mm Newtonian Telescopes. Telescope Reflector Main Mirror 203mm with Secondary Mirror 70mm, Newton Reflector Spherical Mirror for DIY Astronomical Telescope Accessories Astronomical Telescope Accessories D114F900mm with Short-axis Secondary Mirror 25mm, Newton Reflector Spherical Mirror Mar 15, 2017 · So with this in mind I have been looking at good used telescopes and came across a Celestron NexStar 130 at what appears to be a good price, however it is missing/lost (questions to the seller) one of the four sets of adjustment screws/arm assemblies for the second mirror that takes the light to the eye piece (forgive terminology if wrong). Super Duty II Spiders - Style 5 Please state actual minor axis, Major axis and thickness of the secondary mirror when ordering 2. I think Dec 4, 2018 · The 6SE has what is known as Celestron's Fastar secondary assembly. 5 mm of play within the corrector plate cutout. 66 FREE delivery Apr 4 - 15 All secondary mirrors are interferometrically tested for surface accuracy using a Zygo interferometer during manufacture and prior to shipping. com JavaScript seems to be disabled in your browser. Built in offset, add $18. Our super duty II spiders handle the demanding support requirements of short f/ratio telescopes (f/3-f/4. The closest measurement I can get from the holder is that the mirror was about 1. GSO guarantees diffraction limited performance, but their secondary mirrors typically have a mirror surface quality of 1/12 wave RMS at least, and often better. Making a quality telescope mirror is a complex and delicate process that need highly skilled work from experts in this field. In most methods used, the parabolizing tool reaches and stops at a specific area that is selected for processing. 00 $400. Free shipping telescope performance. 5" f=500mm costs 55 euros at Teleskop-Service, but I think you need an f=900mm type), but I would certainly get an estimate of recoating costs. ouyolfkkyrkwtaltpbrgwrhznbbuhxtsnpfuzdnvviqsr