[INSTRM-1191] Actually launch sunss/iic commands based on telescope status

Relates — Wed, 17 Feb 2021 23:42:39 +0000

We currently have two proposed observing strategies for sunss:

The default is simply to take nominally 1200s exposures (to be adjusted for sky brightness) while the telescope is open, without tracking the sky with the SuNSS rotator. This always works, but does not give good imaging fiber data.

The second is to track new fields when the telescope slews to them. Currently by tracking the telescope coordinates and starting an iic exposure when the drive starts Guiding and stopping the iic exposure when the drive starts Slewing. This should give some good imaging fiber data, but we will have to deal with pointings being interrupted in various ways, and rotator tracking limits.

There will be several variations on those (e.g. opening and closing shutters to see if we are Slewing to a new field or just doing something local). But we should start with wiring those two in for unattended observing.

PFS-JIRA

[INSTRM-1191] Actually launch sunss/iic commands based on telescope status