Stray-light measurements at the Observatorio del Teide

Details Stray-light measurements at the Observatorio del Teide Stray-light measurements at the Observatorio del Teide

Feb 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990soph..125..211m&link_type=abstract

Solar Physics (ISSN 0038-0938), vol. 125, Feb. 1990, p. 211-218. Research supported by CAICYT.

Physics

9

Light Emission, Solar Observatories, Sunlight, Sunspots, Atmospheric Effects, Instrument Errors, Telescopes

Scientific paper

A new procedure to separate the instrumental and atmospheric components of stray light is presented. It is based on the dependence of the aureole's atmospheric component on the air mass and is applied to measurements taken with the Vacuum Newton Telescope (VNT) at the Observatorio del Teide (Tenerife). The resulting instrumental part is independent of the air mass.
The variation of both components with wavelength is also studied. The instrumental component shows no dependence on wavelength, in contrast to the atmospheric one which is greater in the blue than in the red.
It is concluded that observations with air masses larger than two will probably be strongly affected by stray light.

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