自动寻星GOTO+直角大双筒 |
| |
|
|
|
| |
|
信达14寸GOTO一片,信达150F5二片折射,AT三片105F7APO
WO2270ED,威信BT80,裕众1570,856 AVX,AIM,FT717, 一堆目镜 |
|
| |
|
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 |
|
|
~~~双筒深空爱好者~~~
Star Hoppinger On the way from Messier to NGC objects 7*50+10*50+15*70+28/37*100新新仿宫内 |
|
~~~双筒深空爱好者~~~
Star Hoppinger On the way from Messier to NGC objects 7*50+10*50+15*70+28/37*100新新仿宫内 |
APP下載|手机版|爱牧夫天文淘宝店|牧夫天文网 ( 公安备案号21021102000967 )|网站地图|辽ICP备19018387号
GMT+8, 2026-2-15 07:02 , Processed in 0.789758 second(s), 20 queries , Gzip On, Redis On.