List of Errors

Assumptions:

• No matchup errors in frame-to-frame offset computation
• No band-merging decision errors
• No confusion
• Flat-fielding as in current pipeline
• Read2-Read1 processing

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Photometric Errors

Input Errors:

• 1. A priori photometric catalog errors
• 2. Undersampling
• 3. Light leaks
• 4. Focal-plane distortion model errors
• 5. Optical PSF model errors
• 6. Seeing model errors
• 7. Atmospheric transmission model errors
• 8. Background photon noise
• 9. Point-source photon noise
• 10. Read noise
• 11. Dark noise
• 12. Time-variable responsivity
• 13. Dead/unusable pixels
• 14. Nonlinearity-correction errors
• 15. Bias measurement error
• 16. Spatially variable point-source responsivity
• 17. Grey-sky approximation error
• 18. Scan control errors

Derived Errors:

• 19. Flat-fielding errors (3, 8, 10-12, 15-17)
• 20. PSF model errors (5, 6)
• 21. Single-frame point-source-detection centroid errors (2, 8-11, 19)
• 22. Frame-to-frame offset errors (4, 18, 21)
• 23. Coadded image point-source-detection centroid errors (2, 4, 8-14, 22)
• 24. Calibration errors (1, 7, 26)
• 25. PSF-fit/aperture-photometry errors (2, 8-14, 19, 20)
• 26. Magnitude/color errors (24, 25)

Position Reconstruction Errors

Additional Input Error:

• 27. Astrometric catalog errors

Derived Errors:

• 28. Band-merged point-source frame coordinate errors (23)
• 29. Point-source celestial coordinate errors (22, 27, 28)