ThaiExcite
88/41 Kanlapapruek Road, Bangkae, Bangkae, 10160, Bangkok, ประเทศไทย
ติดต่อสอบถาม: 081-239-3299
อีเมล์: info@thaiexcite.com
URL: http://www.thaiexcite.com/GSO-Parabolic-Primary-Mirror-8-F-5.html
GSO offers very HIGH quality parabolic 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 parabolic primary mirrors are perfect for those who want to build their own telescopes or replace mirrors in older ones. Ranging in aperture from 4.5” to 16” and offered in various f-ratios, 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. GSO tests each mirror via laser interferometry before shipping, although it does not provide individual test reports.
Besides parabolic primaries, we also offer matching GSO secondary elliptical mirrors.
GSO Primary Mirror Specifications
Aperture | F/Ratio | Aperture | Focal Length | Thickness | Material | Weight | Suggested Secondary Size |
4.5" | F/8 | 114mm | 900mm | 20mm | BK7 | 400g | 28mm |
6" | F/4 | 153mm | 600mm | 20mm | BK7 | 847g | 62.5mm |
6" | F/5 | 153mm | 750mm | 20mm | BK7 | 941g | 50mm |
6" | F/6 | 153mm | 900mm | 20mm | BK7 | 921g | 50mm |
6" | F/8 | 153mm | 1200mm | 20mm | BK7 | 921g | 31mm |
8" | F/4 | 200mm | 800mm | 25mm | BK7 | 1794g | 70mm |
8" | F/5 | 200mm | 1000mm | 25mm | BK7 | 1831g | 62.5mm |
8" | F/6 | 200mm | 1200mm | 25mm | BK7 | 1717g | 50mm |
10" | F/4 | 250mm | 1000mm | 35mm | BK7 | 4126g | 88mm |
10" | F/5 | 250mm | 1250mm | 35mm | BK7 | 3891g | 62.5mm |
12" | F/4 | 304mm | 1200mm | 35mm | BK7 | 6574g | 88mm |
12" | F/5 | 304mm | 1500mm | 35mm | BK7 | 6348g | 70mm |
16" | F/4.5 | 406mm | 1800mm | 45mm | BK7 | 13092g | 88mm |
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 Mirror Diameter listed above.