Gso 20 inch mirror Other positioning by request as a no-cost modification. 3 inch refractor, which has 8 times the light gathering of a 4 inch. Sep 7, 2019 · Page 1 of 2 - 1. I would say it is a very good mirror. the ronchi grating has 85 LPI. 25 to 2 adapter but not zero profile. 97"). The picture below is for testing in my observatory on my CGE Pro mount. Unlike complicated R-C designs that use motors to move the secondary mirror fore and aft to focus, the 8RC secondary mirror is fixed and focusing is done externally. 5 - $1,280. The Hardins were spec'd at 1/12 RMS I think. Are the GSO centre spots on the mirrors accurate? And if not, what’s the best way to replace it with a more accurate sticker? 7. 7" cooling fan. $900 for 6" f8 I think I recall. GSO primary mirrors are offered in sizes from 8" to 16" with various focal ratios. That is why I ask those who have the optics of 16 F4. Enhanced Reflectivity Of 99% Allows Increase Of Image Brightness Up To 20% Compared with Standard Diagonal. You helped me with it many years ago actually. But, it's 20% better. The coma corrector leaves me with skags of coma and Shop telescopes from Guan Sheng Optical, also known as GSO Telescopes, at Agena Astro with free shipping in the US! Primary and Secondary Mirror Sets for Your DIY Projects. This diagonal features Al + SiO2 coatings with 92% reflectivity across the visible spectrum and a 1/10 wave mirror. After more testing, I think my The World's Finiest Astronomical Telescopes with unmatched optical precision - MADE IN TAIWAN India's Best Telescopes with unmatched 'built quality' & 'optical precision'. Is this really a problem, or is it barely noticeable? Similarly, apparently the spider also flexes sometimes and isn’t aligned. I had the chance to use a 12 inch last month and well. 25 inch Crayford. Sep 24, 2020 · Page 1 of 2 - Mirror test results: 10 inch f/4 GSO - posted in ATM, Optics and DIY Forum: Thought folks here would find this of interest. A difference the human eye might not see. 7” diameter low-vibration cooling fan is built into the mirror cell to assure faster cool-down times. 25 to 2 adapter. Technical Specifications 16" Parabolic primary mirror Focal length: 1800mm, F/4. Out of Stock. In the US, Aperture, Zhummel others are made by GSO. Set-up is as easy as you can imagine very simple assembly with the rocker box and put it on the ground, insert the telescope tube and you're ready to go to navigates through the night sky by simply moving the tube up or down, or side to side, by Jul 6, 2020 · Page 3 of 6 - GSO 8 inch classical cassegrain - posted in Cats & Casses: Ive had my 8CC a couple of weeks. 25" eyepiece adapter for maximum flexibility Mar 29, 2020 · Parallax only made a few RCT, all in the 20-24 inch size. It's good to know that the secondary mirror that comes with the GSO 8" f/5 is in fact a 62. What is your budget? You can get a 16" primary and secondary mirror set from agena astro for $1300. I'm nearing the end of my sanity with this thing. Jon GSO uses high-volume, state-of-the-art, high quality manufacturing and test lines. Special types of equipment and techniques make the system mirror the least expensive to any other Oct 2, 2019 · With the advertised high-reflectivity mirrors, the GSO should have roughly the same magnitude penetration and image brightness as the C-8. GSO's parabolic primary mirrors are perfect for those who want to build their own telescopes or replace mirrors in older ones. GSO - posted in Reflectors: SynOrioSky vs. A separate PayPal shipping invoice (write for quote) will be sent. Nevertheless, the Budget hovering around 2500 for the mirror but would prefer under 2000 which I know sounds unreasonable. Great things and bad things are said about the same coating companies by members of CN. 1 inch Dob with it's 20% C) and assumed 88% reflective mirrors, it is the equivalent of a 11. It was superb. thank you GSO - 6 inch F6 Imaging Newtonian Telescope GSO 6" F/6 Newtonian reflector telescope with 2" Crayford focuser, visually optimized. It is very front heavy. Sep 17, 2021 · I have heard that some of the premium mirror grinders, will test an refigure a 6 inch mirror. Today, the Orion Skyline Dobs are made by GSO. People had problem with the tube flexing under the weight of a DSLR and CC. Guan Sheng Optical (GSO) Manufacturer's Specs Parabolic mirror with matching secondary Diffraction limited BK7 glass 1/16 wave RMS minimum, typically better Aluminum reflective coating Protective coating (SiO2) Reflectivity approximately 93% All mirrors include a center spot 4x5 Inch Camera Cut Film Holders, 5x7 Inch Camera Cut Film Holders, Graflex 4x5 Inch Camera Film Backs and Holders, Polaroid 4x5 Inch Camera Film Backs and Holders, Polaroid 8x10 Inch Camera Film Backs & Holders, Canon New F-1 Film Cameras, 4x5 Inch Film Cameras, 8" x 10" Camera Film Backs and Holders, Sigma f/8 Camera Lenses 600mm Focal, 6. There seems to be some big discrepancies between brands on GSO based 6 f/5 newtonians. Nov 22, 2017 · Page 1 of 2 - Optical quality in mirrors of 16 "F4. May 16, 2021 · Question about GSO 8 inch RC - posted in Equipment (No astrophotography): I just purchased a GSO 8 inch R-C, I pointed the OTA at a tree about 50 yards away. Jun 14, 2023 · The problem with comparing a 6-inch f/4 with a 20-inch f/4 is scalability. Here is why, I have the entire series of Explore Scientific 82 2 inch Eyepieces tray: Mirror stabiliser: Cooling fan for "thermal equilibrium" Battery-operated primary mirror cooling fan: Total Height: 55 inch: Tube length: 48 inch: Stand height: 25 inch: Base diameter: 22 inch: Shipping Weight: Tube : Net weight - 18 Kg / Gross weight: 20 Kg Stand: Net weight - 13Kg / Gross weight: 15 Kg: Shipping Carton May 24, 2022 · Having owned scopes with 12 inch and 8 inch GSO mirrors that seems to match the performance that I experienced from them. A few pointers: Actually I have. - posted in Cats & Casses: Ive posted many messages about the scope my club has that Ive spent about 3 years trying to get working. 3 out of 5 stars 2,271 GSO uses high-volume, state-of-the-art, high quality manufacturing and test lines. Here is the info from Teleskop Service. Also remember I made my own setting circles for the Explore Scientific Twilight II from . Guan Sheng Optical (GSO) Manufacturer's Specs Parabolic mirror with matching secondary Diffraction limited BK7 glass 1/16 wave RMS minimum, typically better Aluminum reflective coating Protective coating (SiO2) Reflectivity approximately 93% All mirrors include a center spot May 26, 2020 · Basically the GSO is a quartz mirror that in my opinion is not shaped to the precision needed, and perhaps suffers also from aberrations. I could possibly decrease the thickness of the focuser adapter to the scope, but before doing this I was Aug 14, 2020 · Page 1 of 7 - 2" Diagonal's Which One? - posted in Refractors : Now Im shopping for upgrades for the EON, Is GSO whats advertised, 12th wave dielectric, and how would it compare to a Stellarvue 2 Or what would be a recommended 2 diagonal ? Oct 1, 2022 · Performance . 98 strehl mirror on a interferometer report. com: AstroStreet GSO 90° ST Zenith Mirror, 2 Inch (50. Jan 3, 2021 · My gso 6in f/6 newtonian ota has a different cell than my gso Hardin dobs. 1/50 rms is not uncommon for a . Its a little improved without my star diagonal. GSO guarantees diffraction limited performance, but their mirrors typically have a mirror surface quality of 1/16 wave RMS at least, and often better. Each mirror is aluminized and hard overcoated with a protective overcoat, ready for placement in the telescope tube. GSO actually has many difference secondary mirror options, and it would appear that there 2 or even 3 versions of this scope that use the GSO parts. The GSO 12" f/5 parabolic primary mirror is ideal for amateur telescope makers and is perfectly suited to the Geoptik Nadirus 12" Dobsonian. 2 inch Eyepieces tray: Mirror stabiliser: Cooling fan for "thermal equilibrium" Battery-operated primary mirror cooling fan: Total Height: 52 inch: Tube Length: 45. You are going to need a tall observing chair, or you will be standing. GSO 2" Dual Speed Crayford Focuser Oct 29, 2023 · My 10 inch GSO was made in 2002, I bought it in 2003. A Meade 16" Lightbridge is $2000. The open frame of the cell allows the mirror to cool down to ambient temperatures quickly, so you can start observing sooner. Apr 21, 2023 · There are 2 examples of the owner not having a up to par GSO mirror in this thread. Curious. Highly Affordable, Precision Machine CNC And Offer Best Value, GSO 1. 25 inch mirror diagonal for my AT60ED, but some folks claim the GSO 2 inch mirror diagonal has better accuracy. GSO's 2" Refractor Mirror Star Diagonal is an excellent alternative to higher priced diagonals for those on a budget or just getting started in the 2" format. Jan 9, 2007 · GSO 2 dielectric mirror diagonal - opinions? - posted in Equipment (No astrophotography): I see that Agena Astro is now selling a GSO 2 dielectric mirror diagonal - 99% reflectivity - for $105 (including shipping!) Available in both reflector and SCT versions. The scope arrived on Jan 4th 2019 at 3pm. May 11, 2015 · GSO RC8: help with backfocus tuning of secondary mirror - posted in Cats & Casses: Dear All, I own a feather touch coming from my VC200L and I coupled it with my GSO RC8. It will not fit mirrors with a full 8" diameter. I contacted the dealer, Agena Astro, to explain the situation, and they immediately queried GSO for the technical details. The zero profile is a very desirable feature for me. 8 mm) Diameter, Made in Taiwan, Genuine Japanese Product : Beauty & Personal Care 1 offer from $2099 GSO uses high-volume, state-of-the-art, high quality manufacturing and test lines. Shop for the best primary and secondary mirrors for your telescope, from your favorite brands like GSO, available here at Agena AstroProducts. 25 or 2 inch mirror diagonal for AT60ED? - posted in Refractors : I thought about getting a GSO 1. 25 diagonal would do the trick. Images of deep sky objects are very pleasing and I can effectively use this scope for many science observations including exoplanet transits and spectra of many variable stars and peculiar objects such GSO 6 inch Primary Mirror Cell [ Made in Taiwan ] Add to Cart ₹ 4080 + 18% GST 6" Primary Mirror Cell. Here is the before and after effect both looking into the focuser drawtube, and what the resultant images look like: The ideal primary mirror would have a perfect Nov 1, 2003 · 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. Under this condition the GSO 6” f/4 becomes a real astrograph. Our elliptic flat mirror has the same high optical quality as our parabolic primary mirrors using BK7 quality glass. High definition parabolical primary Our telescope mirrors are extremely precise made from Borofloat33 and Supremax glass of the German company Schott and accompanied by a certificate from interferometric tests, which ensures a high quality. 5 with goto and it is the perfect size. This very smooth mirror surface results in excellent optical performance with practically no light Parabolic Astronomical Telescope Mirrors 1/12 Wave are polished and figured to yield high-level performance. If you’ve only just found out about the Nightly Observing Program, please consider joining the nearly 7000 people each year who experience the thrill of an evening on Kitt Peak. The aluminum coating is protected by a silicon oxide (SiO2) over-coating. Tube : Net weight - 13 Kg / Gross weight: 13 Kg Stand: Net weight - 10. 00. Image 3. Smaller amateur RCT with sizes down to 6-inch mirrors did not hit the market until this decade. 25 inch: Stand Height: 27 inch: Base Diameter: 20 inch: Shipping Weight approx. With a thickness of 25 mm, they are light and have a very short tempering time. 5 mm size. The SCT, which I picked up for a song, is awful. 73 inch. Pushes mirror face 25mm back and is adjustable from 20-30mm with collimation bolts. 25 magnitudes. Are the GSO mirrors from JMI better than what I would get in the Meade? If I got the GSO and built a scope would it be better than the Meade? I understand both are standard production GSO mirror sets both are BK7 not a low thermal expansion substrate. 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. Assuming, as I said, the data is correct, and using the same scale. 6 parabolic primary mirror for self construction of Newtonian telescopes This parabolic primary mirror satisfies with a particularly smooth and accurately finished surface. High-quality primary mirror with 94% enhanced reflectivity. PlaneWave Instruments and RC Optical Instruments still make these large, research-grade RCTs. Otherwise, a great scope. I replaced it with a 62. May 6, 2019 · Page 2 of 3 - 12 inch premium mirror or 14 inch GSO mirror - posted in Reflectors: I highly recommend a used Starmaster. Three adjustable tabs allow you to securely mount mirrors from 22mm to 27mm in thickness. Both scopes probably use a 2-inch focuser, and while the intercept distance (secondary mirror to focal plane) relative to the focal length makes it easy to achieve 20-percent obstruction with a sufficiently illuminated field for a 20-inch f/4, a 6-inch f/4 astrograph (at Mirror Cell: 3 points mirror cell: Accessories Tray: Eyepieces tray: Total Height: 52 inch: Tube length: 45. All of the mirror surface quality over 1/12 wave RMS at the least, typically better. GSO offers very HIGH quality parabolic mirrors for the people who want to build their own telescopes or DIY project. GSO-Zhumell-Lightbridge-AstroTech The purpose of this Post is to provide firsthand knowledge to those trying to make the informed decision between the GSO and Synta branded mass-produced dobsonian Dec 31, 2017 · which seems to point to, assuming the GSO and Celestron data is correct, that the GSO is the flatter mirror. I purchased a GSO mirror from Agena Astroproducts, and have done some Foucault testing using my dusty old tester which I luckily hadnt scrapped GSO Parabolic Primary Mirror (Quartz) - 12" f/5 # AD205 . TALK TO AN EXPERT : 919833974700. 5 GSO. Optical Mechanics quoted me a price of 325 plus return Oct 1, 2022 · Page 1 of 3 - GSO 6” f/4 Newton - posted in Discussion of CN Articles, Reviews, and Reports: The GSO 6” f/4 Newton can become a real astrograph capable to deliver beautiful images of the night sky and to enable the observer to do science in the field of photometry and spectroscopy but it definitely needs some modifications as the mechanics of this scope is totally inadequate to boost its GSO uses high-volume, state-of-the-art, high quality manufacturing and test lines. 1/12 wave PV (peak to valley) is a very nice mirror. GSO offers very HIGH quality parabolic mirrors for the people who want to build their own telescopes or DIY project. My question is were the old mirrors made of the same type of glass and to the same optical standards or are the newer mirrors better quality? I am just weighing the differnce between recoating my mirror or just buying a Jun 26, 2023 · Posted 27 June 2023 - 05:20 PM. The focuser on the 6 inch GSO is a nice 1. net, India's largest telescope store. Mar 8, 2022 · Page 1 of 2 - GSO 16" RC. 3 out of 5 stars 2,271 GSO's parabolic primary mirrors are perfect for those who want to build their own telescopes or replace mirrors in older ones. Special types of equipment and techniques make the system mirror the least expensive to any other GSO offers secondary flat telescope mirrors to match the complete telescope set request. Would this be a good alternative to a WO dielectric diagonal at about $160? Or a Celestron XLT diagonal at about $120?I recall good Gnomon Astrotech Private Limited - Offering GSO 10 Inch F/5 Parabolic Telescopic Mirror,Curved Mirror in New Delhi, Delhi. 5 optics and I do not want to ruin myself by buying very good optics that are worth a lot of money and more than I can afford. Jan 16, 2019 · Page 1 of 4 - GSO 6inch F12 Classical Cassegrain It’s A Winner! - posted in Cats & Casses: GSO 6inch F12 Classical Cassegrain It’s A Winner! I purchased this scope as my Grab & Go set up with high hope on a budget designed telescope. Parabolic Astronomical Telescope Mirrors 1/12 Wave are polished and figured to yield high-level performance. Looking to replace the existing secondary mirror and holder for a GSO-made Lightbridge 12. Three adjustable tabs allow you to securely mount mirrors from 32mm to 38mm in thickness. My buddy has a Zhumell Z12 and I've always been impressed with the views it puts up, especially details on Jupiter. 25 inch: Stand height: 27 inch: Base diameter: 20 inch: Shipping Weight. Aug 10, 2024 · 6 Inch / 150mm F/8 Telescope Mirror (GSO). Apr 7, 2019 · Page 1 of 2 - Cleaner Stars - How to install an aperture mask on your Newtonian - posted in Beginning Deep Sky Imaging: Here is a simple inexpensive way to greatly improve the diffraction artifacts around bright stars in your images. This cell works with mirrors with a maximum diameter of 304mm (11. GSO Parabolic Primary Mirror 45 mm thickeness- 16" f/4. A real Ritchey-Chretien system with full correction of coma and astigmatism, which is the most valued optical construction among astronomical telescopes. It didnt take me long to decide I need to upgrade to a 12 inch too! Ive been giving it a lot of thought. 5 2" Precision Micro 10:1 Crayford style focuser 2" 35mm Eyepieces Extension tube 18 points mirror cell w/ 4. Sep 10, 2016 · I appears that this 20 inch primary mirror has made it to the market. Finally, a Feb 6, 2023 · GSO Newtonian - Dare I buy the 8 inch F4? - posted in Beginning Deep Sky Imaging: Ive been shooting for about 5 years now, trying to keep things on a budget. Im in Wisconsin and the cold weather seems to have contracted the screws locking the primary mirror and screwed up the collimation that I finally think I fixed last summer. All mirrors have a reflective aluminum coating with a reflectivity of 92-93%. Jun 13, 2022 · Agena Astro has the GSO mirrors in stock. However I cant use the focal reducer as the draw tube goes all the way into the focuser without reaching focus. Thanks Quick Overview Premium 2" diagonal with durable dielectric coatings for long lifetime 99% reflectivity across visible spectrum and 1/12-wave BK7 mirror for bright and true images All-metal body with chrome barrel threaded for standard 2" filters Comes with 2"-1. It's still going strong. Our Price: $695. GSOZhuLiBrAT Dob ComparisonSynOrioSkyCel vs. The GSO Dobsonian line is particular model serves a very clear purpose, to offer a large aperture and an excellent image quality at reasonable cost. We recommend this mirror especially for the do-it-yourself construction of a high-quality Newtonian telescope, but also for upgrading an existing telescope. This telescope is ideal for deep sky observation. 00 May 6, 2019 · Page 3 of 3 - 12 inch premium mirror or 14 inch GSO mirror - posted in Reflectors: I have to wonder if youve actually ever used a digital level and an azimuth setting circle??? It is really far simpler than you make it sound. 25'' Dielectric (99% Reflectivity) Diagonal Provide Good Image For Telescope. GSO's elliptical flat mirrors have the same high quality as their parabolic primary mirrors. I don't know if that includes the coating. The response was detailed and quite interesting. No more sitting on a stool to observe. Please see photos for 3 small scuffs ( i haven’t washed this mirror to know if these are just oil or actual scratches). 25'' Dielectric Diagonal Is Choice For Astronomer Looking For Better Diagonal, Improved Version With Brass Compression Ring, true Rated Parabolic Astronomical Telescope Mirrors 1/12 Wave are polished and figured to yield high-level performance. So I have about 20 pounds of counterweights ringing the tube down by the mirror. So yes I have had it out a few times as of True RC with a hyperbolic primary and secondary mirror. Also get Concave Mirrors price list from verified companies | ID: 2850584105997 Buy GSO 10 " RC telescope in India only at moderntelescoeps. GSO RC OTA is an optical tube dedicated to astrophotography. I contacted a local lab and they could reshape the mirror to remove spherical aberration and also astigmatism if present, then re-alluminating the surface. My personal experience of Synta mirrors (8, 10 and 12 inch diameters) is that their figure seemed to be a little better than the GSO ones that I have used - perhaps averaging around 1/5th wave PV ?. I really get round stars across the frame of my QHY268 Mono camera that has small pixels and a diagonal of 28. Aperture: 12" / 304 mm: Focal Length: 2432 mm: Focal Ratio: f/8: Mirror material: low thermal expansion quartz primary and secondary mirrors: Reflectivity: 99% reflectivity non-tarnishing dielectric mirror coatings: Main morror cell: 18 point type: Back Focus: Dec 11, 2020 · At the same time imported mirrors made from BK7 glass are: GSO Parabolic Primary Mirror 34 mm thickness - 10" f/5 -$290. Jan 16, 2023 · GSO based 6 inch f/5 scopes - posted in Reflectors: Just going to gather some facts on these scopes as of 2023. Nov 21, 2013 · Older GSO mirror quality vs new GSO mirrors - posted in Reflectors: I have an older (10yrs) 10 GSO scope that is similar to the Harden dobs. 5 of GSO - posted in Reflectors: Hello; Im building a 16 Dobson and its time to look for the 16 F4. Ranging in aperture from 6” to 16” and offered in various f-ratios, these mirrors are made from optical grade BK-7 glass. Apr 11, 2021 · GSO primaries are 1/12 wave RMS (root mean square) or 1/16 RMS manufacturers spec. For many astronomers, the deep sky begins observing only from 10 "opening. There are numerous examples of the same in the forums of scopes returned for disappointing optics not only for some GSO, but Synta, and ES (JOC?) etc. . Initially I was This cell works with mirrors with a maximum diameter of 200mm (7. I assume that's going to result in greater light transmission. Free US Shipping. The GSO mirror cell incorporates 9 flotation points to support the mirror and protect it from shocks while you're transporting GSO 10" Primary Mirror Cell Fully adjustable 3-point flotation system metal cell holds the primary mirror. How is the optical quality of these GSO mirrors? Greetings GSO offers very HIGH quality parabolic mirrors for the people who want to build their own telescopes or DIY project. Jan 7, 2021 · Zhumell and Apertura scopes use GSO mirrors. I ordered the third 20-inch telescope they made. I have a 14. The GSO mirror cell incorporates three axial and three radial cork pads to support the mirror and protect it from shocks while you're Mar 19, 2019 · Page 1 of 2 - TESTING SKYWATCHER 10-INCH DOBY PRIMARY MIRROR - posted in Reflectors: I am curious to know if any other Skywatcher 10-inch collapsible tube dobsonian telescope owners have had the primary mirror tested by a reliable optician and the results of the test. GSO 1. Condition is Used. Personally I would pay extra to have Cary test a mirror before I'd buy it it since the cost and time to refigure a so-so mirror makes the risk too high for me. May 12, 2022 · Amazon. If you remove the screws on the ring at the bottom with the mirror cell, yes, the tiny nuts will fall into the ota and it is a big pain for something that should be simple. That one had an undersized secondary mirror, only 52 mm major axis. The North American versions definitely seem to Dec 8, 2013 · JMI sells GSO mirrors, a 16" set is a little over $1400. 2 Kg / Gross weight: 12 Kg Primary Mirror Cooling Fan A lightweight 4. Feb 15, 2021 · Page 1 of 3 - GSO 8" f/6 Ronchigram - posted in ATM, Optics and DIY Forum: Hello All I took some images from a GSO 8 inch mirror and ant to know opinions about mirror quality. It's the same mirror cell used in many GSO telescopes. Out of Stock . This is equal to 2. All mirror surfaces are free of any defects which affect performances. The battery-operated fan is powered by a battery pack that uses eight user-supplied AA batteries and plugs into a jack on the mirror cell frame. 25 inches Adapter Astromania 2 Inch Star Diagonal 90-Degree Mirror with 93% Reflectivity Dielectric Coatings - Fully Metal for Refracting Telescope Eyepiece Lens for Astronomical Visual Astrophotography Specifically for GSO and similar branded 6" telescopes with a 20mm/152mm thickness/diameter primary mirror. 25 inch: Stand Height: 27 inch: Base Diameter: 20 inch: Shipping Weight: Tube : Net weight - 13 Kg / Gross weight: 15 Kg Stand: Net weight - 12Kg / Gross weight: 14 Kg: Shipping All mirrors have a reflective aluminum coating with a reflectivity of 92-93%. GSO uses high-volume, state-of-the-art, high quality manufacturing and test lines. I wish that the GSO secondary mirrors came with quality documentation as well. Most 2 diagonals also come with a 1. GSO Parabolic Primary Mirror (Quartz) - 8 May 18, 2020 · GSO 2" 90-deg 99% Dielectric Mirror Diagonal - posted in Equipment (No astrophotography): This is the only 2 dielectric mirror diagonal that I know of that comes with a zero profile 1. Gordon Waite has prices for 6" listed on his site. Well known for their excellent quality, GSO mirrors are some of the best available in their pr Jan 27, 2011 · Page 1 of 6 - Comparing Mass Produced Dobs -->Synta vs. 25" eyepiece adapter for maximum flexibility Includes foam-fitted storage box and end capsProduct DetailsGSO's 2" refractor diagonal Aug 6, 2022 · Gso 20 inch rc - posted in Cats & Casses: Is gso 20 inch rc a good choice its very cheap compared to others rcs out there is the mechanical and optical quality good does anyone owns it????? Jump to content May 19, 2021 · Celestron 2-Inch XLT Diagonal Mirror (for SCT Telescope) SVBONY 2 inches 90 Deg Dielectric Mirror Diagonal for Astronomical Telescope with 1. How does this compare to your 8CC? Im trying to figure out if this is just normal. 7 The deluxe model comes with 2" Micro 10:1 Crayford style focuser and 1. The Newt is a delight. I don't know of any off the shelf premium 6 inch newts. GSO Dobsonians have mirrors in the upper quality range and convince with a low price. My winter ATM project is assembling a 10 inch f/4 astrograph, designed to perform well with a full frame sensor. The zambuto mirror is magnificent. The original Orion XT-6, XT-8 and XT-10 were made by GSO. 4 mm. Primary and Secondary Mirror Sets for Your DIY Projects. 25" adapter. Apparently, it comes with quality certification documentation. All mirrors have an aluminum reflective coating of 93%. In this type of telescopes, two hyperbolic mirrors are used that completely Economical 2" refractor diagonal with 92% reflectivity across visible spectrum Glass mirror polished to 1/10-wave for bright and true images All-metal body with chrome barrel threaded for standard 2" filters Comes with 2"-1. The focus travel is 2 inches, giving about 8 inches of travel from the mirror cell. The 6in f/6 mirror is removed by unscrewing the collimation screws, dont lose the little springs. We’ll view everything from planets to distant galaxies using our 20-inch and 16-inch Ritchey-Chrétien telescopes from RC Optical Systems. 87"). It comes with a 2 inch extension ring and two 1 inch extension rings. Shipping Carton Dimension: Tube : 32 x 40 x 128 cm3 Stand: 14 x 64 x TS 20" f/3. GSO 6" Primary Mirror Cell Jul 6, 2017 · Recoat GSO 12 inch or buy a new one? - posted in ATM, Optics and DIY Forum: Should I have my GSO 12 inch mirror recoated or just buy a new one? I have read so many different opinions on who to use for coating and everyone has a different opinion. The GSO mirrors are tested, the Parks don't come with a test cert. I have noticed that on the Moon and Jupiter both the contrast and resolving power is actually quite good, especially GSO uses high-volume, state-of-the-art, high quality manufacturing and test lines. The parabolic mirror size from 6" to 24", all of these mirrors were made by BK7 or Quartz quality optical glass, all mirrors have an enhance aluminum reflective coating, reflectivity is approximately 93%. Not even close Jan 8, 2019 · - However you do it, the increased light gathering one gets with larger apertures is huge. Tube : Net weight - 9 Kg / Gross weight: 11 Kg Stand: Net weight - 12Kg / Gross weight: 14 Kg. The mirror is in need of recoating. Feb 17, 2022 · GSO, and others too, I assume from looking at the pictures, used side boards from a smaller scope. Special types of equipment and techniques make the system mirror the least expensive to any other A high-quality Dobsonian telescope with parabolic quality optics with 250 mm 10-inch aperture. The stable includes an EQ6R and a CEM25P mount, a TS Optics carbon fiber 6 F/4 Newt, and a Celestron 6 inch SCT. I have 3 GSO scopes, Hardin DSH6 f/8, DSH10 f/5, and TPO f/6. The Parks are thicker and Pyrex, the GSO are BK-7, and thinner (lighter). See the picture below. This very smooth mirror surface results in excellent optical performance with practically no light scatter. Is there anything to back this claim up? I was looking at these eyepieces and figured the 1. 5 mm secondary, and got a fully-illuminated field of 0. Using both an eyepiece and a camera, I couldnt find focus. Comparing my 4 inch apo to my 13. Bright stars at the eyepiece look almost exactly like Suiters example of 1/2 wave under correction. That is not a good ratio for a premium mirror. 1/8 wave PV and above is in the premium category to most. 2 inch Eyepieces tray: Mirror Stabiliser: Cooling fan for 'Thermal Equilibrium' Battery-operated primary mirror cooling fan: Total Height: 52 inch: Tube Length: 45. I'm not sure if GSO makes mirrors larger than that. GSO Dobs are rebranded and sold under many names. May 6, 2019 · Page 1 of 3 - 12 inch premium mirror or 14 inch GSO mirror - posted in Reflectors: Hello everyone, I have an 8 inch Omegon Dobson, which is essentially a commercial Dob with Chinese optics of more than decent quality. GSO Parabolic Primary Mirror 38 mm thickness- 12" f/5 - $535. This Newtonian is a powerful all-round telescope for amateurs who already have a good astronomical mount with tripod. Can anyone recommend reliable sellers in the United States where I can find 16-20 inch primary mirrors for my custom Dobsonian telescope? I'm looking for trustworthy sources with good quality mirrors. May 26, 2023 · That's the exact same OTA that is supplied with the AVX mount as a package. GSOZhuLiBrAT == Synta-Orion-Skywatcher-Celestron vs. In fact, many objects reveal until this opening its true structure. 96% reflectivity enhanced aluminum coated optics Both primary and secondary mirrors are coated with 96% reflectivity enhanced aluminum, overcoated with a layer of quartz for long life.
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