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RMS from repeatability versus magnitude | |
The plots below show measures of sigP1 from multiframe (effectively the 1-sigma uncertainty in source-magnitude for a single-frame exposure) versus profile fit magnitude. Four test tiles from AllSky processing (v4 - blue points) are compared to versions from post-cryo testing (v5 - red points).
The horizontal lines mark the single-frame 5-sigma levels, and the vertical dashed lines are the approximate corresponding magnitudes using a windowed-mode on the sigP1 distributions. These limiting magniudes are given below.
*** Note: the v5 mag limits here may be affected by non-optimal zero-point calibrations.
W? tile field v4 mag limit v5 mag limit ----------------------------------------------------------- W1 0349m046 XMM 15.907 15.841 W2 0349m046 XMM 14.454 14.412 W1 0523m273 CDFS 15.866 15.885 W2 0523m273 CDFS 14.417 14.455 W1 1497p015 COSMOS 16.008 15.863 W2 1497p015 COSMOS 14.592 14.426 W1 2425p545 EN1 15.903 15.759 W2 2425p545 EN1 14.501 14.348 -----------------------------------------------------------
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