ASTROMETRY VERSUS PHOTOMETRY ASTRONOMY DRIVER
ASTROMETRY VERSUS PHOTOMETRY ASTRONOMY FULL

Precess equatorial geocentric rectangular coordinates Returns low-precision coordinates of the planetsĬompute the position angle between sources of specified RA and Dec Returns a blackbody flux for a given effective temperature Return longitude, latitude, altitude & time zones of an observatory Return luminosity distance for a given redshift & cosmological modelĬonvert from geomagnetic to geographic coordinatesĬonvert a month name to the equivalent number or vice-versaĬompute the RA and Dec (and distance) of the Moon at a given dateĬompute illuminated fraction of the Moon's disk for given Julian datesĬompute the nutation in longitude and latitude for given Julian date(s) Precess positions & proper motions from B1950 to J2000Ĭonvert from calendar date to reduced Julian date.Ĭreate a 1-d convolution kernel to broaden a spectrum from a rotating star Interpolate position and motion of planetary bodies (JPL Ephemeris) Open and read JPL DE200 or DE405 Ephemeride FITS File Return values for a multi-component power law initial mass functionĬompute EUV optical depth due to photoionization of HI, HeI and HeIIĬonvert from calendar date to Julian date. Get the current Julian date as a double precision scalarĬonvert between Galactic (or SuperGalactic) and equatorial coordinatesĬonvert between Galactic (or SuperGalactic) and equatorial proper motionĬonvert Hour Angle and Declination to Horizon (alt-az) coordinatesĬompute (low-precision) heliocentric coordinates of the planetsĬonvert geocentric (reduced) Julian date to heliocentric Julian dateĬompute radial velocity given binary star orbit parametersĬonvert from horizon (altitude-azimuth) coordinates to equatorial (RA-Dec)Ĭontour plots with astronomical labeling (either RA,Dec or Get the current date in CCYY-MM-DD format (FITS standard) Read in angular input in decimal or sexigesimal format

ASTROMETRY VERSUS PHOTOMETRY ASTRONOMY FULL

(2000) parameterization.ĭeredden a spectrum using the Cardelli, Clayton and Mathis (1989)Ĭalculate change in RA and Dec due to aberrationĬalculate changes in RA and Dec due to nutation of the Earth's rotationĬalculate correction to altitude due to atmospheric refractionĭerive a full set of cosmological parameters given a subsetĬonvert from civil time to local sidereal timeĬonvert day of year to a DY-MON-CCYY string (FITS standard)įunction to perform various date format conversionsĬonvert from Julian Date to calendar date.ĭeredden Stromgren indices (called by UVBYBETA)Ĭonvert Earth-centered inertial coordinates to geographic coordinatesĬonvert from equatorial (RA-Dec) to horizon (alt-azimuth) coordinatesĬonvert longitude,latitude to X,Y using polar equal-area projectionĬreate overlay grid using polar equal-area projectionĪstronomical coordinate system conversionsĭeredden a spectrum using the Fitzpatrick & Massa (1998)Ĭorrect a galaxy image for inclination effects.Ĭalculate the Galactic space velocity (U,V,W) of a starĭerive a galaxy age as a function of redshift for a cosmological modelĬonvert geographic coordinates to Earth-centered inertial coordinatesĬonvert from geographic to geodetic coordinatesĬonvert from geographic to geomagnetic coordinatesĬonvert from geodetic to geographic coordinates Precess coordinates, proper motion from J2000 to B1950ĭeredden a galaxy spectrum using the Calzetti et al. Or coordinate conversions (calls EULER and PRECESS).Ĭompute components of barycentric Earth velocity, given Julian date

ASTROMETRY VERSUS PHOTOMETRY ASTRONOMY DRIVER

Interactive driver to compute astronomical precession, Given a FITS header, display a 'weathervane' showing N-E orientationĭisplay formatter for pixel + astronomical coordinates Miscellaneous (Non-Astronomy) Procedures Astronomical UtilitiesĬonvert air wavelengths to vacuum wavelengthsĬonvert longitude,latitude to X,Y using Aitoff equal-area projectionĬreate an overlay grid using the AITOFF projectionĬonvert Horizon (Alt-Az) coordinates to Hour Angle and Declinationĭraw an arcbar over an image showing the astronomical plate scale.

FITS Header Astrometry and World Coordinate System (WCS).

Astrometry versus photometry astronomy