Observing at WMKO

Instruments Available for Semester 2015B

For detailed information about the instruments, please check the Instruments Home Page
a Resolving Power vs. Wavelength comparison of Keck instruments, please check this Instrument Comparison graph.

Keck 1 Instruments are:

        HIRESb (blue x-disperser)
        HIRESr (red x-disperser)
        LRIS-ADC (red and blue, with ADC)
        LRISp-ADC (polarimeter, with ADC)
        OSIRIS-NGS (see OSIRIS note below)
        OSIRIS-LGS (see OSIRIS note below)

Keck 2 Instruments are:

        ESIi (ESI with the Integral Field Unit)
        NIRSPEC (without AO see note below)
        NIRSPAO-NGS (NIRSPEC with Natural Guide Star AO)
        NIRSPAO-LGS (NIRSPEC with Laser Guide Star AO; see Keck II LGS note below)
        NIRC2-LGS (see Keck II LGS note below)
        NIRES (see note below)

Subaru Time Exchange Instruments are:

Suprime-Cam (limited), FOCAS, HDS, MOIRCS (limited), IRCS (with NGS/LGSAO with 188 elements), FMOS, COMICS, and Hyper Suprime-Cam (limited, shared risk). See below for limitations.

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 2015B:

Visitor Instruments: WMKO will not support any visitor instruments during semester 2015B.

Keck II Laser: In order to support the installation and test of the new Keck II laser, the Keck II LGS AO system will be unavailable for science between October 7, 2015 and March 31, 2016. The Keck II NGS AO system will be available for science throughout semester 2015B. In semester 2016A, the Keck II LGS AO system will be available for shared-risk science beginning on April 1, 2016.

We anticipate NIRES being available on Keck II for shared risk science during 2015B, however, at this time (03 February 2015) it has not passed its pre-ship review.

OSIRIS will be unavailable for science beginning in December 2015 and continuing through early February 2016 for the first of two detector upgrades.

NIRSPEC (NIRSPAO) will be unavailable for four weeks between early August and early September 2015 in order to conduct a routine servicing mission to remove ice from the dewar window. NIRSPEC will return to service in mid-September 2015.

Suprime-Cam (limited), FOCAS, HDS, MOIRCS (limited), IRCS (with NGS/LGSAO with 188 elements), FMOS, COMICS, and Hyper Suprime-Cam (limited) 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 and the Subaru Call for Proposals for instrument restrictions, particularly for S-Cam and MOIRCS. MOIRCS will be available from October 2015 in a shared risk mode following a detector upgrade. 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. During semester 2015B Hyper Suprime-Cam is being offered to the Keck community for a maximum of three or four nights in a shared-risk mode. These nights will be scheduled during dark time in August, October, November 2015, and January 2016. S-cam will be available only during dark time in September and December 2015.

LGS-AO: A detailed set of guidelines for LGS-AO 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 on Keck II or NGS programs or HIRES on Keck I.

NIRSPAO is scheduled in campaign mode given limited demand for this configuration. If there are insufficient requests for its use, NIRSPAO may not be scheduled in a given semester.

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 02 February 2015.