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Keywords for Queue-mode Observation

New basic keywords were introduced along with introduction of the HSC Queue mode. They were added to the Basic Keyword Dictionary as “Queue” in the “Importance” item. The keywords below are registered as of June 1, 2019.

Basic Keywords

OBS-MTHD

The keyword for queue-mode observation is Queue, and Classical for a classical-mode observation. Data without OBS-MTHD is obtained on a classical mode. Please note that HSC data that were obtained prior to February 27, 2019, are from a queue-mode observation if its OB-ID is not None.

Example of Header Entry

OBS-MTHD= 'Classical'          / Observation Method

Values

Value
Classical (default)
Queue

OB-ID

A code of an Observing Block (OB) provides description of observation. A combination of a proposal ID and this code defines a specific observation.

Example of Header Entry

OB-ID   = 'None    '           / Queue: Observing Block ID

Values

Value
None (default)

OB-COUNT

It indicates the number of execution of OBs that are designated in OB-ID for the relevant proposal ID.

Example of Header Entry

OB-COUNT=                    0 / Queue: Number of observing block repetition

Values

Value
None (default)

PROP-PI

PROP-PI indicates a name of a Principal Investigator (PI) for the relevant proposal.

Example of Header Entry

PROP-PI = 'None    '           / Queue: Name of proposal PI

Values

Value
None (default)

MOON-ILL, MOON-SEP, MOON-EL

The above three terms indicate a fraction of the Moon illumination, a separation angle between the Moon and a target, and an elevation angle at an exposure start, respectively.

Example of Header Entry

MOON-ILL=                0.324 / Moon illumination at exposure start
MOON-SEP=              118.694 / [degree] Moon separation at exposure start
MOON-EL =              -72.514 / [degree] Moon Elevation at exposure start

Values

Value
-9999.99 (default)

REQ-FWHM, REQ-MPHA, REQ-MSEP, REQ-TRAN

The above four terms have an observing constraint of seeing FWHM, the Moon phase, a separation angle from the Moon, and transmittance, respectively, requested by a PI.

The two keywords below are updated upon completion of QA after data are acquired. As of June 1, 2019, the update of the header keywords is underway.

RAWPIREQ

It is a flag that shows whether acquired data meet PI’s requirements.

RAWSUBQA

It is a string of characters that indicates completion of Final Quality Assessment.

Instrument-specific keywords

See information on FITS files of the individual instruments’ websites for details of their instrument-specific keywords.

HSC

Keywords are prepared to store results of data evaluation by the HSC online system, which are updated after the data are acquired. As of June 1, 2019, the update of the relevant header keywords is underway.