Project

General

Profile

Cal-G9

"Regress inferred zero points on clear-sky exposures of Stripe 82 against seeing as a check on stellar photometry algorithms."

Prerequisites

  • Zeropoints for many or all photometric expsoures during SV.
  • Seeing measures for each exposure.

Procedure

  • Plot inferred zeropoints vs seeing, look for any trend.

Verdict

Consequences

  • Measurable trend should be fed back for investigation of SExtractor photometric algorithms. May require revision of the full photometric calibration process (incl. star flats?) if stellar photometry algorithm is altered!