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AstroHuntsman / huntsman-pocs

POCS on the Huntsman Telescope
MIT License
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Skip a filter for flats if flats were already taken with that filter #273

Open JAAlvarado-Montes opened 3 years ago

JAAlvarado-Montes commented 3 years ago

If POCS starts twilight flats late (because of weather or having to restart POCS) it should not try to do all of the filters. It'll be too dark & it will just get further & further behind schedule as it's forced to use long exposures.

wtgee commented 3 years ago

From @AnthonyHorton in slack

Somewhat related to the goal I've previously discussed of having a narrow range of Sun altitudes for each filter, instead of a wide range of Sun altitudes for the twilight flats state as a whole. That would give us more consistent results, especially good for cancelling sky gradients by combining evening & morning flats, & would naturally solve the "starting late" issue. (edited)

lspitler commented 3 years ago

Good idea @AnthonyHorton . @fergusL can you advise on preferred altitudes, or do we need to test? Or just pick one for each filter and see if it works for the whole sequence. One idea is to take e.g. 5 second exposures in a filter through the entire twilight sun altitude sequence and get counts vs sun altitude. Then we'll know for a filter roughly what altitude we should start.