Category: Technology
Question: Read the equatorial mount model from the label on the mount body, and read the telephoto telescope focal length value shown elsewhere on the screen. Then consult the official user manual for that equatorial mount model to obtain its periodic error stability range (unit: arcseconds). Treat the absolute upper limit of that periodic error as an angular displacement, and convert it into the corresponding linear displacement on the focal plane at that telescope focal length (unit: micrometers, rounded to 1 ?m). What is that displacement value?
Answer: 228 μm