OGLE Queries (astroquery.ogle)#
Getting started#
The Optical Gravitational Lensing Experiment III (OGLE-III) stores information
on the interstellar extinction towards the Galactic Bulge. The
astroquery.ogle module queries the online extinction calculator and returns
an Table instance with the same data. To run a single query
using an astropy.coordinates instance use:
>>> from astropy.coordinates import SkyCoord
>>> from astropy import units as u
>>> from astroquery.ogle import Ogle
>>> co = SkyCoord(0*u.deg, 3*u.deg, frame='galactic')
>>> t = Ogle.query_region(coord=co)
Arguments can be passed to choose the interpolation algorithm, quality factor, and coordinate system. Multiple coordinates may be queried simultaneously by passing a vector SkyCoord object. All of coordinates will be internally converted to FK5.
>>> # list of coordinate instances
>>> co_list = [co, co, co]
>>> t1 = Ogle.query_region(coord=co_list)
>>> # (2 x N) list of values
>>> co_list_values = SkyCoord([0, 1, 2], [3, 3, 3], unit=u.deg, frame='galactic')
>>> t2 = Ogle.query_region(coord=co_list_values, coord_sys='LB')
Note that non-Astropy coordinates may not be supported in a future version.
Troubleshooting#
If you are repeatedly getting failed queries, or bad/out-of-date results, try clearing your cache:
>>> from astroquery.ogle import Ogle
>>> Ogle.clear_cache()
If this function is unavailable, upgrade your version of astroquery.
The clear_cache function was introduced in version 0.4.7.dev8479.
Reference/API#
astroquery.ogle Package#
OGLE Query Tool#
- Author:
Brian Svoboda (svobodb@email.arizona.edu)
This package is for querying interstellar extinction toward the Galactic bulge from OGLE-III data hosted at.
- Note:
If you use the data from OGLE please refer to the publication by Nataf et al. (2012).
Classes#
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Configuration parameters for |