The goal of high precision photometry is to reduce/remove correlated noise to achieve photon-noise limited photometry over all binning scales for all targets. This website presents the IRAC team's best understanding of those sources of correlated noise and their mitigation including current techniques and recommendations for both planning observations and reducing data. For more information on IRAC in general, see the IRAC website.
This website is relevant for you if you:
- Need photon noise limited photometry for your science goals
- Have, or want to plan for, staring mode observations
- Observe time-variable signals at sub-percent precision level
- Want to learn about the instrumental effects which limit high precision photometry
Do you want to be part of an ongoing discussion of some of the topics presented here?
The SSC is hosting an email list for community members to have active participation. Sign-up today, and check out the archives for anything you might have missed!
Contributors to this website:
Jessica Krick, Jim Ingalls, Sean Carey, Carl Grillmair, Patrick Lowrance, Bill Glaccum, Jason Surace, Seppo Laine, Peter Capak
- Sep 29, 2016: Linked to repeatability paper from 2015 Data Challenge page.
- Aug 19, 2016: Added information on precise timing of data frames
- Jul 28, 2016: Updated recommendations for planning observations
- Jul 26, 2016: Added page for recommendations for exposure times
- Apr 27, 2016: Updated contributed software page to include the latest pixel mapping code (using kernel regression via nearest neighbors on a calibration dataset). Updated IRAC Simulator description and added a link to download the simulator.
- Mar 11, 2016: Added page for persistent images