ErikaAutomatic doors make me feel like a Jedi. PCW Memorial Observatory
Les Optics Picture of the Day Atmospheric Optics TiltingSun
Quote:There is another effect beyond the sweet spot one. It is something related to how we use averted vision to see faint galaxies. When the FOV is moved manually back and forth I find that faint prom features show up much better. This was very evident while drawing the recent eruptive prom. The eye seems to be able to better perceive very small differences in contrast when the field is moving. Electric slow motions are too slow and measured to show it as well, rocking the field back and forth with the manual knob works fine. Less is more .