Interpret a character string containing a list of bolometers, put number of bolometers to be used in N_BOL_SELECT, channel and ADC of selected bolometers in BOL_SELECT_CHAN and BOL_SELECT_ADC respectively. BOL_ENABLED entries will also be set .TRUE. for bolometers that have been selected. The number of sub-instruments involved is returned in N_SUB, and the names of the sub-instruments are given in SUB_INSTRMNT. The Nasmyth coords of the point on the focal plane to be treated as the axis of the instrument will be returned in CENTRE_DU3, CENTRE_DU4.

The given string can either be ALL, in which case all bolometer channels will be selected, or be a list of words specifying parts of the 144 channel array. Each word in such a list must be separated from the others by ’,’, and the words can select bolometers by type - SHORT, LONG, P1100, P1300, P2000, SHORT_DC, LONG_DC, P1100_DC, P1300_DC, P2000_DC, or by channel number, either individually or as a range, specified by ADC letter and channel number e.g. a3. Allowed ADCs are A-I and channels 1-16.

Repeated words in the list will be ignored, as will repeated selections of the same bolometer by different routes.

The instrument sections returned in SUB_INSTRMNT will be arranged in the order SHORT, LONG, P1100, P1300, P2000.

CENTRE_DU3, CENTRE_DU4 will be set equal to ARRAY_CENTRE_DU3, ARRAY_ CENTRE_DU4 if the first word in the selection is SHORT, LONG, SHORT_DC or LONG_DC. They will be set to the offsets of the bolometer concerned if the first word in the selection is P1100, P1300, P2000 or a bolometer name like A7. If either of the coordinates ends up being set to the ’bad’ value, they will be reset to zero and a warning message output.

Errors will be reported and bad status returned if -

• there are too many words in BOLOMETERS

• BOLOMETERS is empty

• if when bolometers are selected by type no detectors of the desired type are found in the database

• if the type selected refers to a single bolometer (P1100, P1300, P2000, SHORT_DC, LONG_DC, P1100_DC, P1300_DC, P2000_DC) more than bolometer of the required type is found in the database

• if bolometers are selected by ID, e.g. a15, the ID or range of IDs is bad

Warnings will be reported but good status returned if -

• any selected bolometer has undefined attributes (type, calib, dU3, or dU4)

• CENTRE_DU3, CENTRE_DU4 are set to ’bad’ values (they will be reset to 0 too)

CALL SCULIB_BOLSELECT (BOLOMETERS, BOL_TYPE, BOL_CALIB, BOL_DU3, BOL_DU4, BOL_QUAL, BOL_ENABLED, NUM_CHAN, NUM_ADC, ARRAY_CENTRE_DU3, ARRAY_CENTRE_DU4, BOL_SELECT_CHAN, BOL_SELECT_ADC, N_BOL_SELECT, MAX_SUB, SUB_INSTRMNT, N_SUB, CENTRE_DU3, CENTRE_DU4, STATUS)

BOLOMETERS = CHARACTER$\ast$($\ast$) (Given)

BOL_TYPE (NUM_CHAN, NUM_ADC)

BOL_CALIB (NUM_CHAN, NUM_ADC)

BOL_DU3 (NUM_CHAN, NUM_ADC) = REAL (Given)

BOL_DU4 (NUM_CHAN, NUM_ADC) = REAL (Given)

BOL_QUAL (NUM_CHAN, NUM_ADC)

BOL_ENABLED (NUM_CHAN, NUM_ADC)

NUM_CHAN = INTEGER (Given)

NUM_ADC = INTEGER (Given)

ARRAY_CENTRE_DU3 = REAL (Given)

ARRAY_CENTRE_DU4 = REAL (Given)

BOL_SELECT_CHAN (NUM_CHAN $\ast$ NUM_ADC)

BOL_SELECT_ADC (NUM_CHAN $\ast$ NUM_ADC)

N_BOL_SELECT = INTEGER (Returned)

MAX_SUB = INTEGER (Given)

SUB_INSTRMNT (MAX_SUB) = CHARACTER$\ast$($\ast$) (Returned)

N_SUB = INTEGER (Returned)

CENTRE_DU3 = REAL (Returned)

CENTRE_DU4 = REAL (Returned)

STATUS = INTEGER (Given and returned)

The routine will not work properly if the input BOLOMETERS string is more than 400 characters long.

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