Available stackers

Core LSST MAF stackers

  • BaseDitherStacker

    Base class for dither stackers.

    Adds columns: []

  • BaseMoStacker

    Base class for moving object (SSobject) stackers. Relevant for MoSlicer ssObs (pd.dataframe).

    Adds columns: []

  • BaseStacker

    Base MAF Stacker: add columns generated at run-time to the simdata array.

    Adds columns: []

  • DcrStacker

    Calculate the RA,Dec offset expected for an object due to differential chromatic refraction.

    Adds columns: [‘ra_dcr_amp’, ‘dec_dcr_amp’]

  • EclStacker

    Add ecliptic latitude/longitude (ecLat/ecLon) to the slicer ssoObs (in degrees).

    Adds columns: [‘ecLat’, ‘ecLon’]

  • EclipticStacker

    Add the ecliptic coordinates of each RA/Dec pointing: eclipLat, eclipLon

    Adds columns: [‘eclipLat’, ‘eclipLon’]

  • FilterColorStacker

    Translate filters (‘u’, ‘g’, ‘r’ ..) into RGB tuples.

    Adds columns: [‘rRGB’, ‘gRGB’, ‘bRGB’]

  • FiveSigmaStacker

    Calculate the 5-sigma limiting depth for a point source in the given conditions.

    Adds columns: [‘m5_simsUtils’]

  • GalacticStacker

    Add the galactic coordinates of each RA/Dec pointing: gall, galb

    Adds columns: [‘gall’, ‘galb’]

  • HexDitherFieldPerNightStacker

    Use offsets from the hexagonal grid of ‘hexdither’, but visit each vertex sequentially.

    Adds columns: [‘hexDitherFieldPerNightRa’, ‘hexDitherFieldPerNightDec’]

  • HexDitherFieldPerVisitStacker

    Use offsets from the hexagonal grid of ‘hexdither’, but visit each vertex sequentially.

    Adds columns: [‘hexDitherFieldPerVisitRa’, ‘hexDitherFieldPerVisitDec’]

  • HexDitherPerNightStacker

    Use offsets from the hexagonal grid of ‘hexdither’, but visit each vertex sequentially.

    Adds columns: [‘hexDitherPerNightRa’, ‘hexDitherPerNightDec’]

  • HourAngleStacker

    Add the Hour Angle for each observation.

    Adds columns: [‘HA’]

  • M5OptimalStacker

    Make a new m5 column as if observations were taken on the meridian.

    Adds columns: [‘m5Optimal’]

  • MoMagStacker

    Add columns relevant to SSobject apparent magnitudes and visibility to the slicer ssoObs

    Adds columns: [‘appMagV’, ‘appMag’, ‘SNR’, ‘vis’]

  • NEODistStacker

    For each observation, find the max distance to a ~144 km NEO,

    Adds columns: [‘MaxGeoDist’, ‘NEOHelioX’, ‘NEOHelioY’]

  • NFollowStacker

    Add the number of telescopes (‘nObservatories’) that could follow up any visit

    Adds columns: [‘nObservatories’]

  • NormAirmassStacker

    Calculate the normalized airmass for each opsim pointing.

    Adds columns: [‘normairmass’]

  • OpSimFieldStacker

    Add the fieldId of the closest OpSim field for each RA/Dec pointing.

    Adds columns: [‘opsimFieldId’]

  • ParallacticAngleStacker

    Add the parallactic angle to each visit.

    Adds columns: [‘PA’]

  • ParallaxFactorStacker

    Calculate the parallax factors for each opsim pointing. Output parallax factor in arcseconds.

    Adds columns: [‘ra_pi_amp’, ‘dec_pi_amp’]

  • RandomDitherFieldPerNightStacker

    Randomly dither the RA and Dec pointings up to maxDither degrees from center,

    Adds columns: [‘randomDitherFieldPerNightRa’, ‘randomDitherFieldPerNightDec’]

  • RandomDitherFieldPerVisitStacker

    Randomly dither the RA and Dec pointings up to maxDither degrees from center,

    Adds columns: [‘randomDitherFieldPerVisitRa’, ‘randomDitherFieldPerVisitDec’]

  • RandomDitherPerNightStacker

    Randomly dither the RA and Dec pointings up to maxDither degrees from center,

    Adds columns: [‘randomDitherPerNightRa’, ‘randomDitherPerNightDec’]

  • RandomRotDitherPerFilterChangeStacker

    Randomly dither the physical angle of the telescope rotator wrt the mount,

    Adds columns: [‘randomDitherPerFilterChangeRotTelPos’]

  • SdssRADecStacker

    convert the p1,p2,p3… columns to radians and wrap them

    Adds columns: [‘RA1’, ‘Dec1’, ‘RA2’, ‘Dec2’, ‘RA3’, ‘Dec3’, ‘RA4’, ‘Dec4’]

  • SeasonStacker

    Add an integer label to show which season a given visit is in.

    Adds columns: [‘year’, ‘season’]

  • SpiralDitherFieldPerNightStacker

    Offset along an equidistant spiral with numPoints, out to a maximum radius of maxDither.

    Adds columns: [‘spiralDitherFieldPerNightRa’, ‘spiralDitherFieldPerNightDec’]

  • SpiralDitherFieldPerVisitStacker

    Offset along an equidistant spiral with numPoints, out to a maximum radius of maxDither.

    Adds columns: [‘spiralDitherFieldPerVisitRa’, ‘spiralDitherFieldPerVisitDec’]

  • SpiralDitherPerNightStacker

    Offset along an equidistant spiral with numPoints, out to a maximum radius of maxDither.

    Adds columns: [‘spiralDitherPerNightRa’, ‘spiralDitherPerNightDec’]

  • ZenithDistStacker

    Calculate the zenith distance for each pointing.

    Adds columns: [‘zenithDistance’]

Contributed mafContrib stackers