• Erik Tollerud, Yale Core package maintainers • Tom Aldcroft, CfA • Erik Bray, STScI • Matt Davis, STScI • Michael Droettboom, STScI Affiliated package maintainers • Tom Aldcroft, CfA (pyidlastro) • Rene Breton, University of Southampton (photutils) • Wolfgang Kerzendorf, ANU (specutils) • Taro Sato (kcorrect) Contributors • Demitri Muna, NYU • Adrian Price-Whelan, Columbia U • Steve Crawford, SALT • Adam Ginsburg, U Colorado • Frederic Grollier • Prasanth Nair • Neil Crighton, MPIA • Christoph Deil, MPIK • Kyle Barbary, LBNL Monday, March 4, 13
Mailing lists: Get help and discuss with users: astropy Discuss technicalities with developers: astropy-dev Report bugs (not installation problems!): issue tracker github.com/astropy/astropy/issues Monday, March 4, 13
u >>> coord.ICRSCoordinates('00h42m44.3s +41d16m9s') <ICRSCoordinates RA=10.68458 deg, Dec=41.26917 deg> >>> coord.ICRSCoordinates(10.68458, 41.26917, unit=(u.degree, u.degree)) <ICRSCoordinates RA=10.68458 deg, Dec=41.26917 deg> If units are unambiguous to humans, you don’t need to specify -> Otherwise, you have to tell the constructor degrees / hours / radians Monday, March 4, 13
deg, b=-21.57280 deg> >>> c.transform_to(coord.GalacticCoordinates) <GalacticCoordinates l=121.17431 deg, b=-21.57280 deg> >>> c.galactic.l, c.galactic.b (<Angle 121.17431 deg>, <Angle -21.57280 deg>) Transformations are computed based on a registry of available conversions. Monday, March 4, 13
coordinate system, you only have to specify the transformation to and from one other, but can then transform to any system: SgrCoordinates `sgr` >>> c = coord.ICRSCoordinates('00h42m44.3s +41d16m9s') >>> c.transform_to(SgrCoordinates) <SgrCoordinates Lambda=113.81238 deg, Beta=-45.82266 deg> Monday, March 4, 13
Om0=0.3, Ode0=0.5) >>> cosmo.lookback_time(0.612) 4.57737249034 >>> from astropy.cosmology import WMAP9 >>> WMAP9.lookback_time(0.612) 5.87117768853 >>> WMAP9.luminosity_distance(z=0.612) # (in Mpc) 3671.859892514587 Note: currently doesn’t use Units...coming very soon! Monday, March 4, 13