| adstring | Return RA and Dec as character string(s) in sexigesimal... |
| airtovac | Convert air wavelengths to vacuum wavelengths |
| aitoff | Convert longitude, latitude to X,Y using an AITOFF projection |
| altaz2hadec | Convert horizon (Alt-Az) coordinates to hour angle and... |
| astrolibR-package | astrolibR: Astronomy Users Library |
| baryvel | Calculates heliocentric and barycentric velocity components... |
| bprecess | Precess celestial positions from J2000.0 (FK5) to B1950.0... |
| calz_unred | Deredden a galaxy spectrum using the Calzetti et al. (2000)... |
| ccm_unred | Deredden a flux vector using the Cardelli et al. (1989)... |
| cirrange | Force an angle into the range 0 <= ang < 360 |
| co_aberration | Calculate changes to right ascension and declination due to... |
| co_nutate | Calculate changes in right ascension and declination due to... |
| co_refract | Calculate correction to altitude due to atmospheric... |
| co_refract_forward | Calculate the true altitude of a celestial object from an... |
| cosmo_param | Derive full set of cosmological density parameters from a... |
| ct2lst | Convert from Local Civil Time to Local Mean Sidereal Time |
| daycnv | Convert Julian dates to Gregorian calendar dates |
| deredd | Deredden stellar Stromgren parameters given for a value of... |
| dtdz | Integrand for cosmic age vs. redshift in standard cosmology |
| eci2geo | Convert Earth-centered inertial coordinates to geographic... |
| eq2hor | Convert celestial (ra-dec) coords to local horizon coords... |
| eqpole | Convert Right Ascension and declination to X,Y using an... |
| euler | Transform between Galactic, celestial, and ecliptic... |
| flux2mag | Convert from flux (ergs/s/cm^2/A) to astronomical magnitudes |
| fm_unred | Deredden a flux vector using the Fitzpatrick (1999)... |
| galage | Determine the age of a galaxy given its redshift and a... |
| gal_uvw | Calculate the Galactic space velocity (U,V,W) of a star |
| gcirc | Computes rigorous great circle arc distances between points... |
| geo2eci | Convert geographic spherical coordinates to Earth-centered... |
| geo2geodetic | Convert from geographic/planetographic to geodetic... |
| geodetic2geo | Convert from geodetic (or planetodetic) to geographic... |
| glactc | Convert between celestial and Galactic (or Supergalactic)... |
| glactc_pm | Convert between celestial and Galactic (or Supergalactic)... |
| hadec2altaz | Convert Hour Angle and Declination to Horizon (alt-az)... |
| helio | Compute (low-precision) heliocentric coordinates for the... |
| helio_jd | Convert geocentric (reduced) Julian date to heliocentric... |
| helio_rv | Calculate the heliocentric radial velocity of a spectroscopic... |
| hor2eq | Converts local horizon coordinates (alt-az) to equatorial... |
| imf | Compute an N-component power-law logarithmic stellar initial... |
| intdiv | Integer divide |
| ismeuv | Compute the continuum interstellar extreme ultraviolet (EUV)... |
| jdcnv | Convert Gregorian dates to Julian days |
| jprecess | Precess celestial positions from B1950.0 (FK4) to J2000.0... |
| juldate | Convert from calendar to Reduced Julian Date |
| ldist | Integrand for luminosity distance calculation |
| lsf_rotate | Create a 1-d convolution kernel to broaden a spectrum from a... |
| lumdist | Calculate luminosity distance (in Mpc) of an object given its... |
| mag2flux | Convert from astronomical magnitudes to flux (ergs/s/cm^2/A) |
| month_cnv | Convert between a month name and the equivalent number |
| moonpos | Compute the Right Ascension and Declination of the Moon at... |
| mphase | Calculate the illuminated fraction of the Moon at given... |
| nutate | Calculate the nutation in longitude and obliquity for a given... |
| planck | Calculate the Planck function in units of ergs/cm2/s/A |
| planet_coords | Calculate low precision Right Ascension and declination for... |
| polyidl | Calculate polynomial |
| posang | Compute position angle of source 2 relative to source 1 |
| precess | Precess coordinates from EQUINOX1 to EQUINOX2 |
| precess_xyz | Precess equatorial geocentric rectangular coordinates |
| premat | Return the precession matrix needed to go from EQUINOX1 to... |
| radec | Convert Right Ascension and declination from decimal to... |
| rhotheta | Calculate the separation and position angle of a binary star |
| sixty | Convert a decimal number to sexigesimal |
| sphdist | Distance on a sphere |
| sunpos | Compute the Right Ascension and Declination of the Sun at... |
| ten | Convert a sexigesimal number or string to decimal |
| uvbybeta | Derive dereddened colors, metallicity, and Teff from... |
| vactoair | Convert vacuum wavelengths to air wavelengths |
| xyz | Calculate geocentric X,Y, and Z and velocity coordinates of... |
| ydn2md | Convert from year and day number of year to month and day of... |
| ymd2dn | Convert from year, month, day to day number of year |
| zang | Determine the angular size of an object as a function of... |
