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主題: ASA H400 Hyperbolic Newtonian Reflecting OTA Telescope 作者: peter 於 2021-11-25 11:17:19 APM ASA H400
ASA H400 f2.4 - Astrosysteme https://bbs.imufu.cn/thread-809982-1-1.html RMB 40多萬 sharpstar 的 F2.8 也是 Hyperbolic Newtonian Hubble 光學 https://www.hubbleoptics.com/HNA.html 主題: 回覆： ASA H400 Hyperbolic Newtonian Reflecting OTA Telescope 作者: peter 於 2021-11-25 11:20:29 https://www.cloudynights.com/topic/316926-hubble-hyperbolic-newtonian-astrograph-optics/
Hubble Hyperbolic Newtonian Astrograph Optics |