On the instrumental and atmospheric stray-light for solar observations

✍ Scribed by W. Mattig

• Publisher: Springer
• Year: 1983
• Tongue: English
• Weight: 331 KB
• Volume: 87
• Category: Article
• ISSN: 0038-0938
• DOI: 10.1007/bf00151169

✦ Synopsis

From aureole measurements made with a 40 cm-Vacuum-Telescope at Izafia (Tenerife) in the wavelength region 417 nm < 2 < 785 nm and from a comparison with other aureole measurements we conclude the following: (a) Within one solar radius from the limb, the aureole is mostly of instrumental origin. (b) Beyond that distance, the contribution of atmospheric stray-light becomes noticeable. (c) The atmospheric contribution to the aureole intensity is, under good conditions at mountain stations, a very slowly decreasing function, and amounts to some 10 5 of the solar disk intensity.

A procedure is given to separate the variable atmospheric component of the stray-light from the constant instrumental one. * Mitteilung aus dem Kiepenheuer-Institut Nr. 224.