IRCS Grism/Prism Spectroscopy Overhead and Total Observing Time Calculator
* Additional overheads should be thought....
+ Setup Field (target acquisition) per each target : 10-15 min,
+ Telescope Pointing time : 1 min for dAZ = 30 degree,
+ Focus Adjustment (usually 3 times per a night) : 10 min per one time,
+ If you use AO188, for AO188 parameter adjustment : ~ 15 min per each target,
+ Filter change : less than 1 min.