I agree. I go by what I see at the eyepiece. A few of my Classic Japan-made refractors are semi-APO: The Swift (Takahashi) 50mm F14 and Goto 60mm F20 have zero visible false color; and, my Royal 76mm F15 is negligible -- I don't have to process-out any CA when imaging with...
F F T T T T F T T F T F F T F F F F 哲学 孙江可:“明示”与“默示”——康德与早期维特根斯坦的不同“划界” 173 建立在以记号为其代表物这一原理的基础上。” [3](45) p 。 通过名字直接命名对象,由名字联接构成的基本命题 投射由对象直接联接构成的事体;在此基础上,经过 对基本...
F15, calf rearer and farm worker. “It’s very frustrating because we’ve started vaccinating everything for pneumonia but yet we still have to treat a lot of [calves] with pneumonia.” F24, farm manager. One farmer (F9) took blood samples to assess the effectiveness of their pneumonia ...
F14, calf rearer. 3.1.4. The Importance of Early Treatment Interventions It was widely accepted among participants that early treatment for calf illness led to higher survival rates and treatment success: “With a calf, you have to be on it. They’re babies. If they’re not very well,...