Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/69068
Citations | ||
Scopus | Web of Science® | Altmetric |
---|---|---|
?
|
?
|
Type: | Journal article |
Title: | Measurement of night sky brightness in southern Australia |
Author: | Hampf, D. Rowell, G. Wild, N. Sudholz, T. Horns, D. Tluczykont, M. |
Citation: | Advances in Space Research, 2011; 48(6):1017-1025 |
Publisher: | Pergamon-Elsevier Science Ltd |
Issue Date: | 2011 |
ISSN: | 0273-1177 1879-1948 |
Statement of Responsibility: | Daniel Hampf, Gavin Rowell, Neville Wild, Tristan Sudholz, Dieter Horns, and Martin Tluczykont |
Abstract: | Night sky brightness is a major source of noise both for Cherenkov telescopes as well as for wide-angle Cherenkov detectors. Therefore, it is important to know the level of night sky brightness at potential sites for future experiments. The measurements of night sky brightness presented here were carried out at Fowler's Gap, a research station in New South Wales, Australia, which is a potential site for the proposed TenTen Cherenkov telescope system and the planned wide-angle Cherenkov detector system HiSCORE. A portable instrument was developed and measurements of the night sky brightness were taken in February and August 2010. Brightness levels were measured for a range of different sky regions and in various spectral bands. The night sky brightness in the relevant wavelength regime for photomultipliers was found to be at the same level as measured in similar campaigns at the established Cherenkov telescope sites of Khomas, Namibia, and at La Palma. The brightness of dark regions in the sky is about 2 × 10 12 photons/(s sr m 2 ) between 300 nm and 650 nm, and up to four times brighter in bright regions of the sky towards the galactic plane. The brightness in V band is 21.6 magnitudes per arcsec 2 in the dark regions. All brightness levels are averaged over the field of view of the instrument of about 1.3 × 10 -3 sr. The spectrum of the night sky brightness was found to be dominated by longer wavelengths, which allows to apply filters to separate the night sky brightness from the blue Cherenkov light. The possible gain in the signal to noise ratio was found to be up to 1.2, assuming an ideal low-pass filter. © 2011 COSPAR. Published by Elsevier Ltd. All rights reserved. |
Keywords: | Observatories and site testing Airglow and aurorae Photometric, polarimetric, and spectroscopic instrumentation |
Rights: | Copyright 2011 COSPAR. Published by Elsevier Ltd. All rights reserved. |
DOI: | 10.1016/j.asr.2011.05.010 |
Description (link): | http://www.journals.elsevier.com/advances-in-space-research/ |
Published version: | http://dx.doi.org/10.1016/j.asr.2011.05.010 |
Appears in Collections: | Aurora harvest IPAS publications |
Files in This Item:
There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.