ThaiExcite
88/41 Kanlapapruek Road, Bangkae, Bangkae, 10160, Bangkok, ประเทศไทย
ติดต่อสอบถาม: 081-239-3299
อีเมล์: info@thaiexcite.com
URL: http://www.thaiexcite.com/GSO-Elliptical-Secondary-Mirror-46.5mm.html
GSO offers very HIGH quality elliptical secondary mirrors for the people who want to build their own telescopes or DIY project. For years, GSO has made dobsonian telescopes sold under various labels. Users of these scopes know the excellent quality of the optics included, and they have a well-deserved reputation for being the finest mirrors in their price range. We are now pleased to offer virtually the entire line of GSO's Newtonian optics in our market.
GSO's elliptical secondary mirrors are perfect for those who want to build their own telescopes or replace mirrors in older ones. Ranging in aperture from 28mm to 104mm, these mirrors are made from optical grade BK-7 glass. All mirrors have a reflective aluminum coating with a reflectivity of 92-93%. The aluminum coating is protected by a silicon oxide (SiO2) over-coating.
GSO uses high-volume, state-of-the-art, high quality manufacturing and test lines. GSO guarantees diffraction limited performance, but their mirrors typically have a mirror surface quality of 1/16 wave RMS at least, and often better. This very smooth mirror surface results in excellent optical performance with practically no light scatter. Although it does not provide individual test reports, GSO tests each mirror via laser interferometry before shipping.
Besides elliptical secondary mirrors, we also offer matching GSO parabolic primary mirrors.
GSO Secondary Mirror Specifications
Minor Axis Diameter | Approx. Major Axis Diameter | Approx. Thickness | Mirror Weight |
28mm | 38mm | 5mm | 9g |
31mm | 43mm | 8mm | 20g |
46.5mm | 65mm | 10mm | 60g |
50mm | 70mm | 10mm | 65g |
62.5mm | 88mm | 12mm | 128g |
68mm | 95mm | 15mm | 190g |
70mm | 97mm | 12mm | 156g |
74mm | 104mm | 16mm | 232g |
80mm | 114mm | 18mm | 326g |
88mm | 122mm | 20mm | 411g |
104mm | 145mm | 17mm | 515g |
Notes:
- Actual measurements can vary by a little bit from all values shown above due to manufacturing variations.
- Actual coated mirror diameter will be 2-3 mm less than the measurements listed above.