The instrumental profile of spectrograph of Golosiiv solar telescope ATsU-5
Heading:
| 1Osipov, SN 1Main Astronomical Observatory of the National Academy of Sciences of Ukraine, Kyiv, Ukraine |
| Kinemat. fiz. nebesnyh tel (Online) 2015, 31(5):72- |
| Start Page: Instruments and Devices |
| Language: Russian |
Abstract: The device for exactly and quickly measurement of instrumental profile (IP) of high resolution spectrograph is described. The transfer from solar observation to IP measurements and backwards is carried out by rotation of coelostat additional mirror only. The measurements of IP in 2-nd, 3-th, and 4-th orders of grating are carried out with the spectrograph of solar telescope ATsU-5 using He-Ne gas laser LGN-302 (λ = 632.9 nm). The monitoring of IP during observational season is completed, during which the halfwidth of IP was varied within 10 %. The dependence of IP from temperature of spectrograph air is presented. The importance of taking into account the differences of non-coherence solar light and coherence laser beam is emphasized. The technique for estimation of coherence of laser beam is proposed. |
| Keywords: instrumental contour, solar telescope |
References:
1.S. I. Gandzha, “The instrumental profile of fifth order of the solar spectrograph of Main Astronomical Observatory of the Ukrainian SSR Academy of Sciences,” Astrom. Astrofiz., No. 52, 49–52 (1984).
2.E. A. Gurtovenko, “Solar high-resolution spectroscopy with double diffraction monochromators,” Astrom. Astrofiz., No. 41, 15–28 (1980).
3.E. A. Gurtovenko and R. I. Kostyk, “Double diffraction monochromator of Main Astronomical Observatory of the Ukrainian SSR Academy of Sciences with a digital device for observation and processing of solar spectrum,” Astrom. Astrofiz., No. 39, 88–94 (1979).
4.A. N. Zaidel’, G. V. Ostrovskaya, Yu. I. Ostrovskii, Technique and Practice of Spectroscopy (Nauka, Moscow, 1976) [in Russian].
5.V. N. Karpinskii, “Technique of determining the line profiles of the solar spectrum with photoelectric double pass monochromator,” Izv. GAO AN SSSR 24 (2), 84–143 (1965).
6.E. A. Kokhan and N. I. Pechinskaya, “The instrumental profile of double diffraction monochromator with digital registering,” Soln. Dannye 12, 84–89 (1973).
7.E. A. Gurtovenko and L. I. Fedorenko, “The use of a laser beam for investigating the instrumental profile of a double-pass solar spectrograph,” Sol. Phys. 6, 465–475 (1969).
https://doi.org/10.1007/BF00146480
8.Y. G. van Bueren and H. Nieuwenhuijzen, “Determination of the instrumental profile of the Utrecht Solar Spectrograph by use of a laser,” Bull. Astron. Inst. Neth. 18, 170–174 (1966).