CALPOINTING Pointing calibration results

Name

Format

Units

Measure

Comments

Columns

Key

CAL_DATA_ID

Int Calibration data identifier

CAL_REDUCTION_ID

Int Calibration reduction identifier

ANTENNA_ID

Int Antenna identifier

FEED_ID

Int Feed identifier

FREQUENCY_RANGE

Double(2) Hz FREQUENCY Frequency range used to determine the result

Data

START_VALID_TIME

Double s EPOCH Start time of result validity period

END_VALID_TIME

Double s EPOCH End time of result validity period

AZELDIR

Double(2) rad DIRECTION Azimuth and Elevation

COLL_OFFSET

Double(2) rad Collimation Azimuth and Elevation

COLL_ERROR

Double(2) rad Collimation Uncertainty (azi. and elev.)

POINTING_METHOD

String Observing Method

BEAM_WIDTH

Double(2) rad Fitted beam width

WIDTH_ERR

Double(2) rad Fitted beam width

BEAM_PA

Double rad Fitted beam position angle

BEAM_PA_ERR

Double rad Fitted beam position angle uncertainty

PEAK_INTENSITY

Double K Fitted maximum

PEAK_INTENSITY_ERR

Double K Fitted maximum uncertainty

Notes: This table contains the result of an individual pointing observation. Nr is the number of receptors as specified in the FEED table.
CAL_DATA_ID
Calibration data identifier
CAL_REDUCTION_ID
Calibration reduction identifier
ANTENNA_ID
Antenna identifier
FEED_ID
Feed identifier
FREQUENCY_RANGE
Frequency range used to determine the result . Note that the list of spectral windows corresponding to this frequency range must correspond to a single receiver band, this band being known via RECEIVER_ID which is (are) in the data section of the FEED table.
START_VALID_TIME
Start time of result validity period
END_VALID_TIME
End time of result validity period
AZELDIR
contains the pointing direction of the antenna in the alt-azimuthal coordinate system as a Direction Measure (See aips++ note 233 by Wim Brouw)
COLL_OFFSET
measured collimation offset in the cross-elevation and elevation directions.
COLL_ERROR
Uncertainty in the cross-elevation and elevation collimation determination
POINTING_METHOD
Method used to derive the result, five point, cross...
BEAM_WIDTH
Fitted beam width
WIDTH_ERR
Fitted beam width uncertainty
BEAM_PA
Fitted position angle
BEAM_PA_ERR
Fitted position angle uncertainty
]PEAK_INTENSITY] Fitted maximum inetnsity
PEAK_INTENSITY_ERR
Fitted maximum inetnsity uncertainty