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LCOGT / mop

Microlensing Observation Portal
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Cap MOP exposure times due to autoguider failures #160

Closed rachel3834 closed 2 months ago

rachel3834 commented 2 months ago

A number of 1m telescopes are seeing failures of their autoguiders. Replacements are currently being worked on but for the time being a few of them are showing serious trailing when long exposures are requested. Telescopes known to have this issue include ELP: DomeA and CPT: DomeB.

MOP doesn't usually request observations from a specific dome, as per LCO network design, so the easiest temporary fix is to cap the exposure time at 180s (as recommended after analysis by LCO Science Support). This will then be applied across the network. For fainter targets we should request more exposures in a group so they can be binned later to improve photometric precision if needed.

rachel3834 commented 2 months ago

I'm making temporary changes to the default MOP configuration for 1m imaging requests in order to manage this issue.

In omegaII_strategy.determine_obs_config: added cap on exposure time to 180s, and increase the default number of exposures if need be. Updated corresponding test code accordingly.

rachel3834 commented 2 months ago

Deployed in MOP v4.5.3