Pan-STARRS Photometric and Astrometric Calibration

Magnier, Eugene. A.; Schlafly, Edward. F.; Finkbeiner, Douglas P.; Tonry, J.L.; Goldman, B.; Röser, S.; Schilbach, E.; Casertano, S.; Chambers, K.C.; Flewelling, H.A.; Huber, M.E.; Price, P.A.; Sweeney, W.E.; Waters, C.Z.; Denneau, L.; Draper, P.W.; Hodapp, K.W.; Jedicke, R.; Kaiser, N.; Kudritzki, R.-P.; Metcalfe, N.; Stubbs, C.W.; Wainscoat, R.J.

Abstract

We present the details of the photometric and astrometric calibration of the Pan-STARRS1 3π Survey. The photometric goals were to reduce the systematic effects introduced by the camera and detectors, and to place all of the observations onto a photometric system with consistent zero-points over the entire area surveyed, the ≈30,000 deg2 north of δ = −30°. Using external comparisons, we demonstrate that the resulting photometric system is consistent across the sky to between 7 and 12.4 mmag depending on the filter. For bright stars, the systematic error floor for individual measurements is (σ g , σ r , σ i , σ z , σ y ) = (14, 14, 15, 15, 18) mmag. The astrometric calibration compensates for similar systematic effects so that positions, proper motions, and parallaxes are reliable as well. The bright-star systematic error floor for individual astrometric measurements is 16 mas. The Pan-STARRS Data Release 2 (DR2) astrometric system is tied to the Gaia DR1 coordinate frame with a systematic uncertainty of ~5 mas.

Citation

Magnier, E. A., Schlafly, E. F., Finkbeiner, D. P., Tonry, J., Goldman, B., Röser, S., Schilbach, E., Casertano, S., Chambers, K., Flewelling, H., Huber, M., Price, P., Sweeney, W., Waters, C., Denneau, L., Draper, P., Hodapp, K., Jedicke, R., Kaiser, N., Kudritzki, R.-P., …Wainscoat, R. (2020). Pan-STARRS Photometric and Astrometric Calibration. Astrophysical Journal Supplement, 251(1), Article 6. https://doi.org/10.3847/1538-4365/abb82a

• Journal Article Type: Article
• Acceptance Date: Feb 10, 2020
• Online Publication Date: Oct 30, 2020
• Publication Date: 2020-11
• Deposit Date: Nov 27, 2020
• Publicly Available Date: Nov 27, 2020
• Journal: Astrophysical Journal Supplement
• Print ISSN: 0067-0049
• Electronic ISSN: 1538-4365
• Publisher: American Astronomical Society
• Peer Reviewed: Peer Reviewed
• Volume: 251
• Issue: 1
• Article Number: 6
• DOI: https://doi.org/10.3847/1538-4365/abb82a
• Public URL: https://durham-repository.worktribe.com/output/1256369