10 inch telescope mirror

Telescope Mirror 10 Inch - Independence Day Sal

Conical Cross-section and Standard Parabolic Mirrors See description on new 6, 8, 10 and 12.5 inch conical mirrors as well as 14.5 inch and larger mirrors for mounting methods. Please note that the 8, 10 and 12.5 inch mirrors come all required mounting hardware. A General Description of Conical Mirrors. Conical Mirror Specification Purchase telescope mirror blanks here. We provide 6 inch, 8 inch, 10 inch, and 12 inch telescope mirror blanks in standard 3/4 thickness, and larger mirror blanks up to 20 inches in 1 thickness. All of the mirror blanks we sell are individually tested to be free of internal strain Meade 5000 2in Enhanced Diagonal Mirror with Adapter. 5 out of 5 stars. (8) 8 product ratings - Meade 5000 2in Enhanced Diagonal Mirror with Adapter. $149.99. Was: $189.95. Free shipping. Only 3 left

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  1. Jim's Mobile, Inc. (JMI Telescopes) is a world renowned manufacturer of astronomical telescopes and aftermarket accessories for the amateur and professional astronomer. We manufacture telescopes and accessories such as telescope wheels, carrying cases, guiding computers, focusers, motors and motor controls and much more
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  3. Zambuto Optical Company is a full service custom manufacturer of premium Newtonian primary telescope mirrors from 7 through 24 diameter. Special Notice-We want to let our customers know that during this timeframe we continue to do business as usual. There may be delays with regard to shipments due to outside circumstances beyond our control.
  4. Each telescope should be ready to go out of the box when you receive it. 3. Fast and Precision Optics. The precisely figured 10 f/5 primary mirror is made from BK7 optical glass for enhanced thermal stability
  5. 10 Inch Telescope Mirror Kit . $325.00. Add to Cart. Add to Wish List Add to Compare. 12.5 Inch Telescope Mirror Kit . $510.00. Add to Cart. Add to Wish List Add to Compare. Abrasives, Polish and Pitch Kit (4.25 Inch Mirror) $39.95. Add to Cart. Add to Wish List Add to Compare. Abrasives, Polish and Pitch Kit (6 Inch Mirror).

Newton telescope : 1 - primary element, concave parabolic mirror; 2 - secondary element, plane diagonal mirror. The Newton telescope is classed among amateur astronomical systems. The main disadvantages of this design are long tube (as compared with other designs) and inconvenient eyepiece at its upper end Mirror blank thickness and pricing by size is below. Add amount listed below to Supremax mirror pricing for a quartz Zambuto mirror. Thicker quartz is available in all sizes with prorated pricing per thickness. 8 at 20mm edge thickness add $290.00. 10 at 25mm edge thickness add $390.00 10 Inch Telescope Mirror Kit. Make your own 10 inch telescope mirror. This kit Includes everything you need to grind your own top quality telescope mirror. Saved by Roberto Varela. 27. Mirror Kit Stargazing Telescope Favorite Things Projects To Try Sky Homemade Space How To Make

GSO Parabolic Primary Mirror - 10 f/

Even though some builders prefer to buy commercial mirrors and fit them in a DIY structure, I believe that making a telescope mirror is probably the most rewarding part of the whole built. Starting from a rough glass blank, you can obtain an almost perfect parabola with surface errors in the range of 20 to 60 nm Total Ratings 1, $169.99 New. Meade Series 5000 2in Enhanced Diagonal Mirror With Adapter - 07680. 5 out of 5 stars. (8) Total Ratings 8, $168.84 New. Dust Caps for 1.25 Telescope Eyepieces Barlow Lens or. 5 out of 5 stars

Celestron - NexStar 8SE Telescope - Computerized Telescope for Beginners and Advanced Users - Fully-Automated GoTo Mount - SkyAlign Technology - 40,000+ Celestial Objects - 8-Inch Primary Mirror. 4.5 out of 5 stars. 768. $1,299.00. $1,299 Telescope Mirror Set - 80mm Primary & 31mm X 22mm Secondary with Cells. 5.0 out of 5 stars 2. $24.99 $ 24. 99. Get it Thu, Jul 29 - Tue, Aug 3. FREE Shipping. Only 1 left in stock - order soon. Meade Instruments 07680 Series 5000 2-Inch Enhanced Dielectric Diagonal Mirror with Schmidt-Cassegrain Adapter (Black) 4.6 out of 5 stars 106. $149.00. GSO offers secondary flat telescope mirrors to match the complete telescope set request. Our elliptic flat mirror has the same high optical quality as our parabolic primary mirrors using BK7 quality glass. All of the mirror surface quality over 1/12 wave RMS at the least, typically better. All mirrors have an aluminum reflective coating of 93% Our 10-inch Dobsonian Apertura telescope is the perfect size for stargazing. This model boasts a 10-inch mirror and comes complete with an additional set of night watching accessories. Shop all available Dobsonian telescopes from High Point online today Mirror Sets: $12 TO COAT DIAGONAL FOR MIRROR WITH MIRROR IF NEEDED. Include $10 more if the diagonal or secondary is attached to anything. Note, Primary must be under 10.5 inch and secondary under 2.75 inch ( minor axis ). $10 EXTRA FOR MIRRORS LARGER THAN 12.5 INCH diameter AND 3 INCH or more THICK

10 Inch Telescope Mirror Kit - Firsthand Discover

Primary Mirror: 10 (254mm) diameter, 1250mm focal length, f/5 focal ratio with surface accuracy of 1/12 wave. The mirror is made of B270 water white optical crown glass that is free of internal stress and striae. B270 glass is equivalent to BK7 in performance and optical quality Shop for 10 inch telescopes at Best Buy. Find low everyday prices and buy online for delivery or in-store pick-up. Enjoy a safe, convenient shopping experience. The 90-degree diagonal mirror of this powerful Galileo telescope produces fully vertical images for clear and accurate terrestrial viewing. See all Telescopes The largest mirror at that time, which was installed in the Hooker Telescope at Mount Wilson, Calif., measured 100 inches. In March 1934, Corning poured a 200-inch disk, but part of the mold broke loose during the pouring, ruining the blank 10-inch Dobsonian Telescope: This instructable documents the design and construction of a 10 reflector telescope. It is not intended to be a complete step-by-step instruction set, but rather to document some of the design details and methods that were used.There are a lot of The Best 10 Inch Dobsonian Telescope. The title for best dobsonian telescope for sale today goes to the Sky-Watcher 10 Collapsible Dobsonian Telescope. This telescope stands out not only because of its fantastic quality, beautiful mirror, and rave reviews from satisfied customers, but because it solves the greatest weakness of the dobsonian.

Parks Parabolic Primary Mirrors (Pyrex) 10 inch f/5 Mirror

4 Best 10-Inch Telescopes On The Market In 2020 Review

Hadley had figured out how to parabolize his speculum mirrors. His telescope was a six inch f/10 on a solid altazimuth mount with slow motion controls. He had eyepieces that gave powers up to 230x. His telescope was tested against a refractor of 123 feet focal length and found to be its equal in resolution though somewhat dimmer A low vibration cooling fan is built into the primary mirror cell of the telescope to assist in cooling your optics down quickly. The fan is powered by a eight (8) AA batteries (not included) which are housed in an external battery pack. A 3.3-inch dual-speed Crayford-style focuser rounds out this package Make a hole there, about 1/10-inch across. Alternatively, you could measure the diameter of your mirror and use a compass (set to ½ the mirror's diameter) to draw a circle on a blank piece of paper — the pinprick of the compass point defines the centre of the circle. Step #3: Dot the centre of the mirror

Orion XT10 Deluxe Dobsonian 10-in telescope mirror help

The mirror was made by Maurizio Di Sciullo of Excelsior Optics in 2002.-----The fork mount was designed to hold a 16 telescope, so the 10 was fit by extending the DEC axis. I'm selling only the OTA with the mounting rings so you can adapt it to your own mount. The tubing is aluminum painted white and lined inside with 1/8 cork and overlaid. It is a fine-looking, near full-thickness, 10 inch diameter blank that I intend to grind and polish into a 1st class telescope mirror. Here is a stack of my home-made 8 and 10 inch mirror blanks. The second from the bottom is the one above 1978 Coulter full thickness mirror. 56-inch focal length. This mirror predates Coulter's entry into the cheap Dobsonian market. Never tested, but a good mirror, perhaps 1/8 wavefront. Delivers very good planetary images. 2.1-inch secondary mirror. Excellent deep sky telescope 10 Inch F 6 Telescope Mirror. September 11, 2020; By admin Filed Under Mirror; No Comments Gso parabolic primary mirror 10 f 5 4 telescope mirrors stellafane the inch building a 6 construction pictures diy telescopes company seven orion skyquest dobsonian f6 dougarion classic richard berry cloudy night

The telescope (Aries 10 MC thereafter) is a 10-inch Maksutov-Cassegrain with f/15 focal ratio and 30' field of view that is coma-free and diffraction-limited across the spectrum, from infrared through ultraviolet spectrum The Parabolic Primary mirror is the factor by which most telescopes are described; hence an 10 telescope has a primary mirror of 10 inch (25cm) in diameter. The Primary mirror of the telescope is precisely mounted in a Cell at the rear of the telescope. The light entering the telescope is gathered and then reflects forward in a converging. Newtonians give you a large aperture at an affordable price. High quality optics, a precise Crayford focuser, a rigid steel tube and short focal length make these telescopes ideal for astrophotography as well as visual observing. The 10 inch (254mm) primary mirror collects 56% more light than an 8. Images are bright

Reflector telescope active cooling methods and different fan placements. A large rear mounted intake fan, which blows the air on the mirror's surface, is the most effective for actually cooling the mirror. It might be a good idea to mount it on some sort of circular mask (preferably with a mesh dust filter), which will force the air into the OTA It's jumbo, 10 (254mm) diameter parabolic primary mirror gathers a ton of light from the night sky, so you can see more objects than you would with an 8 or smaller telescope. What's more, the XT10 Classic Dobsonian reflector telescope's big mirror yields exceptionally bright views with high contrast meade 16 f/10 sct ota,lx-200r,4064mm fl,uhtc,w/mirror lock & internal fan-$6995 CELESTRON 11 F/10,CARBON FIBER OTA,STARBRIGHT CTGS,FASTAR COMPATIBLE——$1295 MEADE 10 F/10 SCT OTA,2540MM FL,FROM LX-200 FORK MOUNT,MID 1990'S VINTAGE-$69

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  1. This video shows all the steps involved in slumping a fast primary mirror for a telescope. It covers CNC milling a foam positive mold, casting a plaster nega..
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  3. A better way of showing how accurate a telescope mirror is by Strehl. The strehl percentage indicates the amount of light which is returned by the mirror, within the central peak of the Airy Disk. One of the most expensive mirror makers around is R. F. Royce. R. F. Royce does not let his mirrors out unless they have a strehl of at least 96%
  4. Complete Telescopes Now Available! Telescopes: Truss Telescopes: Ultra-Light Conversions: Scopes and Testimonials: Parts and kits: Components for the ATM: The ETT (Easy Transport Telescope) Telescopes for sale: Links: Contact Us: Pricing: Payments Paypal and Credit Cards . Lightbridge (or any dobsonian rockerbox) upgrades: Click here for info

The 6-inch Primary we are using. Unarguably, the Primary Mirror is the single most critical component of your telescope. It gathers and focuses the light you will be viewing, and it's size, weight and focal length set the major dimensions and performance characteristics of your telescope The Zhumell Z10 Dobsonian telescope features an 10 parabolic primary mirror that captures a substantial amount of light and produces crisp, bright images free of visual defects like spherical aberration. You'll also get two fully multi-coated eyepieces: a 2 30mm eyepiece for wide field views and a 1.25 9mm eyepiece for higher.

Resolution is also a function of primary mirror diameter. The larger the mirror the more detail a telescope will give. How well an observer is trained is almost as important as telescope size. For example, a practiced observer will see more in a 6-inch telescope than a new observer will see in a 10-inch The mirror box encloses the mirror cell and allows the entire telescope to rotate vertically. I built mine entirely from CNC-cut ¾ plywood, and fastened it together with 2½ bolts. It features 2 semicircular arms, and mounting points for the trusses (T-nuts are fine), as well as a lid to keep the mirror safe when the telescope is not in use

Jan Van Gastel's pages contain a lot of useful construction information about mirror cells, cable slings, 90° edge bearings - both the piano wire and roller bearing types - for a 20 inch telescope. Nils Olof Carlin's three-part sling is an interesting cable sling implementation that solves the problem of side movement of the mirror With a light-gathering mirror that measures 10 meters (400 inches) in diameter, the Keck Telescope will essentially double the observation range of any existing telescope, bringing into view objects more than 10 billion light years away (one light year is equal to about 6 trillion miles)

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telescope that can match the views my 17.5 TD delivers. PLEASE CONTACT US BY PHONE TO ORDER OPTICS. PRIMARY MIRRORS. Made from precision annealed PYREX glass. Upgraded enhanced aluminum coatings. (1/20 wave front RMS or better-up to 10) (1/15 wave front RMS or better-12.5 and larger) 6f/8. 48 fl Also comes with two (2) custom Dust Protectors - One for the primary mirror and one that covers 99% of the telescope - Valued at $160.00 (see photos) Also, a padded, NEW NEVER USED, carrying/ travel case - Valued at $159.00 New (see photos) DOBSONIAN TELESCOPE LOCATION - CAPE CORAL, FLORIDA 33914 Optical design - Reflector Optical diameter - 305m Light from the sky enters the tube and gets reflected by this mirror back up to the top of the tube where there is a small diagonal mirror that bounces the light out the side of the tube to your eye. A Dobsonian telescope is an alt-azimuth mounted Newtonian telescope design popularized by the amateur astronomer John Dobson starting in the 1960s AstroSystems offers the TeleKit in a variety of sizes: 10, 12.5, 13.1, 14.5, 15, 16, 17.5, 18, 20, 22 and 24 inch truss tube telescope kits. What we are really offering is an opportunity for you to experience the pride and satisfaction of building your own, top-quality telescope

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But it has a lot of aparture 13.1 inch! And, in astronomy size really matters. I drove all the way to Alger, WA in order to get this telescope (160 mile both ways). The telescope was probably unused for years. There was cobweb inside it. The previous owner was a nice person, he took the mirror out and showed it to me Description. Our new 254 mm f/14.5 Maksutov-Cassegrain generated a lot of excitement when we introduced the prototype at the Northeast Astronomy Forum (NEAF) in April 2017. Like its predecessor, this telescope was developed for those desiring a no-compromise high-power instrument for a wide variety of visual and imaging needs For the most discriminating planetary observers who prefer a more portable high-performance telescope we also offer 8 aperture F/7 and 10 or 12.5 aperture with an F/6 focal ratio, as the longer focal ratio makes it possible to consistently achieve wavefront peak-to-valley ratings of less than 1/20th wave with our known process capability Discovery 10 DHQ f/5.6 Dob Tim Vasquez. This is a quick summary of my experiences with my first Dobsonian telescope. Overall I'm happy. This page sums up my impressions so far. After a couple of weeks of research and shopping around, I decided the 10-inch f/5.6 Discovery DHQ Newtonian reflector (Dobsonian) was exactly what I wanted

Obsession Telescopes / Telescopes / 12

Current and future space-based telescopes may contain Corning mirrors that are less than 10 percent of the weight of an equal-sized solid mirror. The technology has been adapted for use in the geostationary (GOES) weather satellites, which are key U.S. resources for weather, hydrologic, and climate forecasts Optical Mirrors are designed to reflect light for a variety of applications, including beam steering, interferometry, imaging, or illumination. Optical Mirrors are used in a wide range of industries, such as life sciences, astronomy, metrology, semiconductor, or solar. Edmund Optics offers a range of laser, flat, metal substrate, focusing, or. Telescope Mirror Blanks Providing telescope mirror blanks and kits to telescope makers. Mirror blanks are individually tested for internal strain. Plastic protractor inserted under a 6 inch mirror blank during a stress test, to illustrate what stress would look like - if there were any present For the sake of this article, the telescope was a fairly common Tasco 4.5 mirror, f/8 with a 900 mm focal length. In this instance, I would not recommend just cleaning the mirror per se - (read more below), but I'd like to offer you a couple of courses of action that you can follow that will lead to excellent views of the sky

AstroGoods mirror cells are individually designed and built with computed support point positions for optimal performance. By computing support points from your mirror's specifications, glass deformation is minimized. Designing to your mirror's thickness and diameter prevents unwanted movement in the cell. Design: 6 cell is a set design, with. Telescopes are instruments to gather light. The light gathering ability of a telescope depends on the area of its objective - it depends on the square of the diameter of the main mirror. In this case, 10 squared over 8 squared works out to 25/16, so the 10 inch has roughly half again the light gathering ability It is simple, yet provides easy adjustment for accurate collimation. Best of all, it can be adapted to just about any existing telescope, home-built or commercial. is easy to build and is suitable for normal-thickness mirrors (those with a diameter-to-thickness ratio of about 6:1) up to 10 inches diameter

The power of the telescope, computed as focal length of the telescope divided by the focal length of the eyepiece. High powers are useful for detecting faint stars, use up to 50X or 75X per inch if seeing conditions permit. Type of telescope A Newtonian Reflector uses a primary mirror and a secondary flat mirror New Ordering Procedures for 2020 (PLEASE READ) 6 Inch F/8 Odyssey ® Telescope Component Kit. Reg Price: US$ 303.75. Price: US$ 249.95. 8 inch f/6 Mirror Set, Primary Mirror, Secondary Mirror. Price: US$ 259.95 The NEW 22 f/4.2 UC is a revolutionary design. It is a large aperture telescope that collapses into a very small package. If you have limited hauling or storage capacity, then this is the scope for you. Our revolutionary Virtual Mirror Box (VMB) is the foundation of the UC design. It is a welded steel framework made from NC laser cut steel In some countries telescope mirrors are unavailable, so they need to be imported, at high shipping, customs, and tax cost. A 6 (150 mm ) or 8 (200 mm) standard quality mirror will be cheaper if bought ready made. 250 mm (10) probably too

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Best Reflecting Telescopes, Reflectors, Binoculars, Spotting Scopes, Microscopes, Astronomy Accesssories, Astronomical Components - Top Rated and Cheap Prices at Parks Optical 1.33 inch to 2.60 inch Secondary Mirror Holder: Astrolight AZ6 System: 1.25 Rack and Pinion Focuser: 10 Primary Mirror Cell - 11 7/8 Tube I.D. 2.14 Secondary Mirror. Heater for Newtonian secondary mirror heaters 1.83 inch to 2.14 inch MA. CAN $88.00. US $71.20. 2017. Heater for Newtonian secondary mirror heaters 2.60 inch to 3.50 inch MA. CAN $91.00. US $73.63. 2018. Heater for Newtonian secondary mirror heaters 4.00 inch and up An unusual original Cave 10 inch f 7.2 Newtonian Telescope. E-mail me at alpaslow@yahoo.com. This instrument still has original mirror coatings dated Aug 10, 1958 ! This is my unrestored 1958 Cave 10 inch f - 7.2 Telescope. It features an original coatings mirror. The instrument has also the original finder scope and rack and pinion focuser This concave mirror focuses the light toward the front of the telescope. Usually, these primary mirrors have a focal length around twice the diameter of the mirror. For example, a Celestron 8-inch CPC Schmidt-Cassegrain telescope would have an 8-inch primary mirror with a focal length of 16 inches. Convex Secondary Mirror: The primary mirror. You are referred to Amateur Telescope Making, books 1,2 and 3, S & T Gleaning, De Vany Texereau, et al. We left off above with two shellacked wood discs, one convex, the other concave. With gummed paper, duct or masking tape wrap the edges of these discs to provide a circular dam three eighths of an inch high above the surface


Precision Parabolic Mirrors Edmund Optic

Casting a light weight telescope mirror (all steps in the process) In this video I show how I designed, cast, slumped and coldworked a light-weight telescope mirror blank prototype. The blank is 10 inches in diameter, but only weighs 4 lbs 13 oz. It has a ribbed back design for rigidity, and is pre-slumped to f/4.9 The Hale Telescope is a 200-inch (5.1 m), f /3.3 reflecting telescope at the Palomar Observatory in San Diego County, California, US, named after astronomer George Ellery Hale.With funding from the Rockefeller Foundation in 1928, he orchestrated the planning, design, and construction of the observatory, but with the project ending up taking 20 years he did not live to see its commissioning The November 1974 issue of Sky & Telescope (page 325) carried an article by Eric G.H. Mobsby of Blandford Forum, Dorset, England, describing a method of testing medium and long focus mirrors with a special inverse grating that can be interpreted with the ease of a Null Test. Robert A. Cox, then Co-editor of the Gleanings for ATM's column. Literally, thousands of celestial objects will be visible with your 10 inch Dobsonian Reflector. Everything from huge galaxies, nebulae and star clusters to smaller planetary nebulae, double stars, and millions of suns in the far off regions of space will be within the grasp of your telescope

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GSO 10-inch f/5 Dobsonian Telescope Deluxe Version. The telescope collects 55% more light than an 8-inch telescope. The image is brighter with better resolution. This Dobsonian is perfect for deep-sky and solar system observing. ♦ High-quality parabolic main mirror with 94% reflection for a brighter image The 10inch Dobsonian telescope from Sky-Watcher is a Newtonian reflector telescope where the mirror is used to gather light. Designed for amateur and intermediate users, this telescope offers a large aperture, short focal length, good optical quality and great light gathering quality, all at an affordable price Notice the peepsight built into the handle. I chose a 4-inch f/4 because I already have a 3-inch f/11 refractor. Next project: a 10-inch Dobsonian.' L.B.S., Clovis New Mexico Mr. R. Berry/ I am compelled to share with you the great gift you have given me. I have in my possession a 6-inch Dobsonian reflector telescope

Aperture rules for deep space! I want at least a 10 (10 inch) primary mirror, and preferably a 12 primary mirror. The primary mirror should be about f 5.0. From my experience, faster telescopes have mirror costs go up disproportionately fast for a given quality, and slower telescopes end up being too tall feels loose—the telescope is shipped with the mirror locked. Use the telescope's coarse focus knob (6, Fig. 1) to bring the object into focus. Practice using the Autostar II Arrow keys to cen-ter an object in the telescope's field of view. 10. Press the key prompted by Autostar II to accept the Sun warning. Autostar II now display Including the 2.5 Hex focuser is a quantum leap for this price class of telescope. A Red Dot viewfinder as well as a 25mm SPL eyepiece are included with the device. If you want to transport the telescope as compactly as possible, the new 10 FirstLight Dobsonian / Newtonian is easy

RCOS: 14GSO 8 inch F4 OTA, Imaging Newtonion Telescope

GSO 10 f/5 Newtonian Reflector Telescope - Steel OTA

Astro-Sitall, Zerodur and ULE type ceramics used by RCOS, have a temperature coefficient of near 0.0 ± 0.6 x 10-7 while Pyrex, which inexpensive telescopes use, have a temperature coefficient of 32.5 x 10 - 7. This means the optical performance of RCOS telescopes are maintained over any temperature excursion The main telescope tube carries the 200-inch mirror at its bottom end. This structure is supported on ball-bearing trunnions anchored in a large yoke, which consists of two 10-foot-diameter inclined tubular girders tied together at the south end by a cross member supported on a pivot bearing, and at the north end by a giant horseshoe bearing They made several types of telescopes including the CT-100 Coffee Can scope but the most popular were the large dobsonians. They came out with the 13.1 inch dobsonian in May of 1980. These were the Blue box scopes where the mirrors were held in a sling cell. They switched to the well known red tubed Coulters around 1985

When assembling telescopes, they would match mirror focal lengths to tube lengths. If they made tubes in 1/2 inch intervals, then a -3 mirror would go in a -3 tube, or one 1.5 shorter than the nominal size. And 1.5 under would be close enough to the actual focal length of this mirror for the focusser to do its thing Homemade 12.5 Inch Dobsonian Telescope: How to build a 12.5 inch closed tube Dobsonian telescope. I began building it in the spring of 2008, but the bulk of the work was done in July of 2008 with first light occurring on July 25. This Instructable describe the planning, design, and pa Quick collimation screws for easy mirror alignment. 32mm, 2-inch-format, wide field and 1.25-inch, 9mm Plossl eyepieces. Our largest telescope at present is the GSO Revelation 10, Dobsonian telescope. In 2005. This telescope, won critical acclaim for being one of the cheapest telescopes of its type, at a very low price point Sky-Watcher 10 f/4.7 Flextube 250P telescoping truss-tube Dobsonian. $785.00. Add To Cart. Showing 1 to 15 of 16 total. Sort By : Position Name Price. Position. Position. Name Parks Parabolic Primary Mirrors (Pyrex) 6 inch f/8 Mirror $295.95,Free Shipping, Parks Optical 601-21020,Telescope Components Accessories, Famouse, Parks Parabolic Primary Mirrors (Pyrex) 6 inch f/8 Mirror $295.95,Free Shipping, Parks Optical 601-21020,Telescope Components Accessorie The Primary Mirror on ebay(8 inch) 203 mm mirror with secondary Amazon also carries this telescope mirror: Telescope Mirror Set - 203mm Primary & 100mm X 70mm Secondary Mirrors The Focuser (1.25 inch) Orion 13031 Basic 1.25-Inch Rack-and-Pinion Telescope Focuse