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Instrument Comparison graph.
| Keck 1 Instruments are: |
| Keck 2 Instruments are: |
| Subaru Time Exchange Instruments are: |
| Telescope Limits |
Please note that Keck I and Keck II have different eastern and western telescope limits. This affects the times objects will be available for observing. Objects can be acquired earlier on Keck II and followed later on Keck I.
| Special Notes for Semester 2013B: |
Visitor Instruments: WMKO will not support any visitor instruments during semester 2013B.
Suprime-Cam, FOCAS, HDS, MOIRCS, IRCS (with NGS/LGSAO with 188 elements), FMOS, and COMICS at Subaru: Through an exchange with the Subaru Observatory, several nights may be available to observers who would like to use any of these instruments. Please check the Subaru web site for detailed descriptions of these instruments. Subaru time may be traded for time on both Keck telescopes, the exact number of nights depending both on the Keck and the Subaru demand. Neither Keck nor Subaru will support Target of Opportunity (ToO) observations during the exchanged nights. All observations will be executed in the "classical" observing mode.
NIRSPEC Service Mission: NIRSPEC will be undergoing a service mission, and hence not available, from August through mid-September with a possible extension of the service mission until mid-October. We will not have more information before the proposal due dates, but should have a better idea of the possibilities before the TACs meet. Observers should NOT apply for NIRSPEC time during the first six weeks of the semester and should be prepared for requests for time during the following four weeks to be moved until after mid-October.
LGS-AO: For semester 2013B there will be no restrictions on the number of LGS nights nor their distribution between telescopes. NIRC2, OSIRIS, and NIRSPAO with laser guide star adaptive optics will be available. A more detailed set of guidelines for these nights and information on the capabilities of the systems may be found on the LGS-AO page. Backup programs for LGS proposals are essential. Backup programs for LGS may be either NGS programs or non-AO (seeing limited) NIRSPEC (after the early semester service mission) on Keck II. Non-AO NIRSPEC is not available when NIRSPEC is in the AO configuration.
KOA (Keck Observatory Archive): Data from all instruments will be archived in the Keck Observatory Archive (KOA). The default proprietary period for all data is 18 months. If observers desire a different proprietary period they may request this through the Keck coversheet. Please see the KOA homepage for information on the archive. Please also see the KOA proprietary period policy.
For detailed information about the instruments, please check the Instruments Home Page
  (further observing information)This page last updated 1 March 2013. bas
bschaefer@keck.hawaii.edu