Common-Resolution Convolution Kernels for Space- and Ground-Based Telescopes

Details Common-Resolution Convolution Kernels for Space- and Ground-Based Telescopes Common-Resolution Convolution Kernels for Space- and Ground-Based Telescopes

2011-06-24

arxiv.org/abs/1106.5065v2

Publications of the Astronomical Society of the Pacific, Vol. 123, No. 908 (2011 October), pp. 1218-1236

Astronomy and Astrophysics

Astrophysics

Instrumentation and Methods for Astrophysics

Scientific paper

10.1086/662219

Multi-wavelength study of extended astronomical objects requires combining images from instruments with differing point spread functions (PSFs). We describe the construction of convolution kernels that allow one to generate (multi-wavelength) images with a common PSF, thus preserving the colors of the astronomical sources. We generate convolution kernels for the cameras of the Spitzer Space Telescope, Herschel Space Observatory, Galaxy Evolution Explorer (GALEX), Wide-field Infrared Survey Explorer (WISE), ground-based optical telescopes (Moffat functions and sum of Gaussians), and Gaussian PSFs. These kernels allow the study of the Spectral Energy Distribution (SED) of extended objects, preserving the characteristic SED in each pixel. The convolution kernels and the IDL packages used to construct and use them are made publicly available.

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