折射镜、反射镜、折反镜各有什么优缺点？
What are the pros and cons of refractors, reflectors and catadioptrics?
折射镜成像锐利好维护但大口径贵；反射镜口径大性价比高但需偶尔调光轴；折反镜紧凑便携适合摄影但价格较高。
Refractors give sharp, low-maintenance views but cost more per inch; reflectors are affordable and large but need collimation; catadioptrics are compact for imaging but pricier.
难度 专业 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
Terence Dickinson,《NightWatch》第4版,Firefly Books,2006
T. Dickinson, NightWatch: A Practical Guide to Viewing the Universe, 4th ed., Firefly Books, 2006; Chinese ed.
独立核验依据 · Independent verification: 核验依据 2 OPENLIBRARY 标识 /works/OL19287031W：Nightwatch : a practic
#望远镜类型 #光学
买天文望远镜最该看什么参数？
What matters most when buying a telescope?
口径（物镜直径）最重要，它决定集光能力和能看清多暗多细的目标，比放大倍数更关键。
Aperture (objective diameter) matters most—it sets light-gathering and detail, more important than magnification.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
Terence Dickinson,《NightWatch》第4版,Firefly Books,2006
T. Dickinson, NightWatch: A Practical Guide to Viewing the Universe, 4th ed., Firefly Books, 2006; Chinese ed.
独立核验依据 · Independent verification: 核验依据 2 OPENLIBRARY 标识 /works/OL19287031W：Nightwatch : a practic
#口径 #集光力
新手该买望远镜还是双筒望远镜？
Should a beginner buy a telescope or binoculars?
入门建议先买一副好的双筒望远镜，轻便易用、视野广，适合认星座和看流星；再考虑天文望远镜。
Beginners should start with good binoculars—light, easy, wide-field, great for constellations and meteors—before an astronomical telescope.
难度 入门 · 适合 小学低段(6-8)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
Terence Dickinson,《NightWatch》第4版,Firefly Books,2006
T. Dickinson, NightWatch: A Practical Guide to Viewing the Universe, 4th ed., Firefly Books, 2006; Chinese ed.
独立核验依据 · Independent verification: 核验依据 2 OPENLIBRARY 标识 /works/OL19287031W：Nightwatch : a practic
#双筒望远镜 #入门