A Color All-Sky Panorama Image of the Milky Way

Details A Color All-Sky Panorama Image of the Milky Way A Color All-Sky Panorama Image of the Milky Way

2009-08-29

arxiv.org/abs/0908.4360v1

PASP 121 (2009) 1180-1187

Astronomy and Astrophysics

Astrophysics

Galaxy Astrophysics

7 figures, submitted to PASP

Scientific paper

10.1086/648480

This article describes the assembly of an optical (RGB) all-sky mosaic image with an image scale of 36 arcsec/pixel, a limiting magnitude of approx. 14 mag and an 18 bit dynamic range. Using a portable low-cost system, 70 fields (each covering 40 deg x 27 deg) were imaged over a time span of 21 months from dark-sky locations in South Africa, Texas and Michigan. The fields were photometrically calibrated against standard catalog stars. Using sky background data from the Pioneer 10 and 11 space probes, gradients resulting from artificial light pollution, airglow and zodiacal light were eliminated, while the large-scale galactic and extragalactic background resulting from unresolved sources was preserved. The 648 Megapixel image is a valuable educational tool, being able to fully utilize the resolution and dynamic range of modern full-dome planetarium projection systems.

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