Primary Instrument Master:
Secondary Instrument Master:
Pre-Observing Observing Post-Observing
Follow this link for information about pre-observing activities: proposal preparation, mask design and submission, pre-run activities, etc. Follow this link for information about your observing run: instrument and telescope setups, scripts, software, procedures, etc. Follow this link for information about your post-observing activities: backups, comment forms, data reduction, etc.
Troubleshooting Technical Pages Index
Trouble Shooting pages and links. Portal to the technical pages: for the initiated only! A listing of the instrument pages.
Keck AO allows observers to obtain near-diffraction limited images in the near IR and diffration limited at wavelengths longward of 2.0 microns (K band). With NGS-AO and R-band seeing better than 1 arcsecond, users can expect on-axis Strehl ratios of 50% or better on guide stars with R-band brighter than 12th magnitude. NGS-AO guide stars must be less than 30 arcseconds from the field of interest. NGS-AO outperforms LGS-AO down to guide stars with R = 14th magnitude. LGS-AO guide stars can be as dim as R = 18th magnitude and be 60 arcseconds from the field of interest.