Open Access
Optical telescopes: Theory and design
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The article was published on 1976-01-01 and is currently open access. It has received 11 citations till now. The article focuses on the topics: Reflecting telescope & Refracting telescope.read more
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Astrometric CCD observations of visual double stars at the Pulkovo Observatory
I. S. Izmailov,M. L. Khovricheva,M. Yu. Khovrichev,O. V. Kiyaeva,E. V. Khrutskaya,L. G. Romanenko,E. A. Grosheva,K. L. Maslennikov,O. A. Kalinichenko +8 more
TL;DR: In this paper, the results of 3489 observations for 361 visual double stars performed in 2003-2007 with the 26-inch refractor of the Pulkovo Observatory are presented.
Journal ArticleDOI
A wide-field corrector at the prime focus of a Ritchey-Chrétien telescope
TL;DR: In this article, a form of a lens corrector at the prime focus of a hyperboloidal mirror that provides a flat field of view up to 3° in diameter at image quality D80 < 0.8 arcsec in integrated (0.32 − 1.1 µm) light was proposed.
Journal ArticleDOI
Astrometric observations of visual binaries using 26-inch refractor during 2007-2014 at Pulkovo
I. S. Izmailov,E. A. Roshchina +1 more
TL;DR: In this article, the results of 15184 astrometric observations of 322 visual binaries carried out in 2007-2014 at Pulkovo observatory are presented, where the accuracy of measurement of a single CCD image is in the range of 0.0005 to 0.021 on average along both coordinates.
A wide-field corrector at the prime focus of a ritchey-chr ´
TL;DR: In this article, a form of a lens corrector at the prime focus of a hyperboloidal mirror that provides a flat field of view up to 3 ◦ diameter at image quality D80 < 0.8 arcsec in integrated (0.32-1.10 µm) light was proposed.
Journal ArticleDOI
Optical Layout of the T-170M Space Telescope
TL;DR: The T-170M telescope as mentioned in this paper is a Ritchey-chretien aplanat with an aperture 1.7 m in diameter, a relative hole of f/10, and a field of view of 0.5°.