[天文观测] 比利时的VDB141 |
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BADMAN:目镜的表现视场的简易计算:表现视场=57.5/焦距*视场光阑(度)
举例说明一个焦距20mm的目镜,视场光阑直径是24.5mm,它的表现视场=57.5/20*24.5=70度 |
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信达AZ-EQ6 GT ,254/1000 F4,佳能600D,ZWO ASI120MM+60/280,
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凤凰114/900M,U型三脚架,佳能ixus105,罗技PRO4000,天狼10*50D
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怀念躺在平房看银河的岁月
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100Q NEQ6 70ED RC8 SBIG8300 斧头立柱 QHY5L-II ASI130MM ASI120MC 目镜数个
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星辰的跳动是爱 CF902,0.71reducer,sw820B , MS10.5X70
ZEQ25GT,skytracker,Q9,5100mod,optolongHSO,qhy5l2c,2x3x5xbalow |
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if(回到过去 == TRUE) then 会不会有未来?
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![]() 看灰机咯! |
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高桥FSQ-85EDX+IEQ45赤道仪+RoboFocus+西湾OAG+QHY5L-IIM导星+QHY8L制冷CCD+LPS-P2滤镜 ,星野组合:佳能500D,EOS MFA LPS-P2, EF 17-40L ,EF 100 IS USM,VIXEN GP2-SBS, 60220二代导星镜
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塞拉囧
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