Re: 命運的轉折 - 史上最高Strehl的APM-TMB折射鏡
發表於 : 2011-09-26, 20:40
similar to this one,
at f2.8, and if you are imaging at 5.4um, your depth of focus is around 2.8x5.4 = 15um if you can tolerate 1/2 pixel blurr. So a FLI focuser is better, the focus resolution can reach nano level, and that will be my choice for the coming D600 f3.5 Astrograph for my Tibet observatory.
at f2.8, and if you are imaging at 5.4um, your depth of focus is around 2.8x5.4 = 15um if you can tolerate 1/2 pixel blurr. So a FLI focuser is better, the focus resolution can reach nano level, and that will be my choice for the coming D600 f3.5 Astrograph for my Tibet observatory.