SetADCAngles

Bases: KPFFunction

Quick and dirty code to manually set ADC angles for a notional NULL position.

KTL Keywords Used:

  • kpffiu.ADC1VAL
  • kpffiu.ADC2VAL
Source code in kpf/fiu/SetADCAngles.py 
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class SetADCAngles(KPFFunction):
    '''Quick and dirty code to manually set ADC angles for a notional NULL
    position.

    KTL Keywords Used:

    - `kpffiu.ADC1VAL`
    - `kpffiu.ADC2VAL`
    '''
    @classmethod
    def pre_condition(cls, args):
        pass

    @classmethod
    def perform(cls, args):
        kpffiu = ktl.cache('kpffiu')
        el = args.get('EL')
        za = 90 - el
        ADC_delta = calculate_ADC_delta(za)
        log.info(f"ADC Hack: za={za:.1f}, ADC_delta={ADC_delta:.1f}")

        # Constants
        common_angle = 60
        ADC1_offset = -5
        ADC2_offset = 5
        log.debug(f"ADC Hack: common_angle={common_angle:.1f}")
        log.debug(f"ADC Hack: ADC1_offset={ADC1_offset:.1f}")
        log.debug(f"ADC Hack: ADC2_offset={ADC2_offset:.1f}")

        # Calculations
        ADC1 = common_angle + ADC1_offset + za - ADC_delta
        ADC2 = common_angle + ADC2_offset - za - ADC_delta
        log.info(f"ADC Hack: Writing ADC1VAL={ADC1:.1f}, ADC2VAL={ADC2:.1f}")
        kpffiu['ADC1VAL'].write(ADC1)
        kpffiu['ADC2VAL'].write(ADC2)


    @classmethod
    def post_condition(cls, args):
        pass

    @classmethod
    def add_cmdline_args(cls, parser):
        parser.add_argument('EL', type=float,
                            help="The telescope elevation to use in the calculation")
        return super().add_cmdline_args(parser)