Page History

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A single 10sec exposure form the Cerro Pachon All-Sky Camera obtained on the first night of operation, January 13, 2014. The field of view spans 147.5 x 94.3 degrees and slightly more than 180 degrees in the corners where the local horizon is visible. The orange streak is the Sodium laser being used for Gemini South adaptive optics.

To do list for next visit

Introduction and Scope

The Large Synoptic Survey Telescope (LSST) is a wide-field 8m telescope that will survey the southern sky over a period of 10 years. Each LSST observation (a visit) has a duration of 34 seconds consisting of 2 back-to-back 15-second exposures re-pointing to the next sky position. The LSST will implement a "scheduler" that will optimize the observing cadence against science priorities and local observing conditions. To this end the LSST project has developed an operations simulator (OpSIm) that models the temporal sequencing of visits given parameters of science proposals, constraints of hardware performance and historically based observing conditions (seeing, sky brightness and weather).

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getsky.sh: does simple statistics in a 400 x 400 pixel box in the center of the image, in each bandwipenight

testimage.sh: cleans out directory from a nighttakes a single 1/8000 sec f/22 image and calls it test.fits, reports statistics on the image as well.

makeskyplot.sh: makes .eps file using supermongo of sky brightness vs. MJD for a given night

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Image with sources suppressed with 20 x 20 pixel median filter, sky brightness map: