


There are two sets of times listed below, LIGHTNING and HUMAN. The LIGHTNING case assumes that everything goes absolutely perfectly, with observer reaction time an absolute minimum. This does not occur in real life. The HUMAN overhead is the one that should be adopted for all service observing programs.
LIGHTNING | HUMAN | ||
Slew/Target Acquisition | 3 min | 5 min (variable) | |
Change Directory/File Name | 1 min | 1 min | |
Change Chip Setup | 1 min | 2 min | |
Change Tracking (non-sidereal) | 1 min | 2 min | |
Focus Frame | 3 min | 6 min | |
Chip Readout | |||
Full Chip/Four Amps | 0.8 min | 0.8 min | |
Full Chip/One Amp | 3 min | 3 min | |
Quarter Chip/Four Amps | 0.3 min | 0.3 min | |
Quarter Chip/One Amp | 0.8 min | 0.8 min |
You have a short service program that is inserted into a longer program scheduled for the same night. You want to use a different chip setup, non-sidereal tracking, and a single 300 second integration. The required time is:
Slew/Target Acqusition | 5 min |
Change Directory/File Name | 1 min |
Change Chip Setup | 2 min |
Change Tracking (non-sidereal) | 2 min |
Focus Frame | 6 min |
Chip Readout = Full Chip/Four Amps | 0.8 min |
Integration Time | 5 min |
Change Directory/File Name BACK | 1 min |
Change Chip Setup BACK | 2 min |
Change Tracking (non-sidereal) BACK | 0 min (flip switch) |
Total Time for Observation | 24.8 min |