Statistical observations of sporadic meteors in Czechoslovakia are given in this paper. The observations were reduced by means of personal coefficients. The hourly rates and other quantities are listed in tables.
Statistical observations of sporadic meteors in Czechoslovakia in 1948 and 1949 are given in this paper. The observations were reduced by means of personal coefficients. The hourly rates and other quantities are contained in tables.
Isophotes of comet Arend-Roland were constructed from 20 photographs gained by objective Tessar 1 : 4,5, f = 18 cm. The photographs were exposed in the visible spectral region in integral light, and with orange and blue filters on panchromatic emulsion of Agfa ISS plates (21/10 Din). The plates were measured on recording microdensitometer. The extreme measurable extent of the normal tail was 7° and of the anomal tail 1,5°.
1947: Lyrids, δ Aquarids, Perseids, γ Draconids, Orionids, Leonids, Geminids; 1948: δ Aquarids, Perseids, γ Draconids. The hourly rates of Czechoslovak observations of shower meteors are given in this paper. The reduction was done by means of personal coefficients. The hourly rates and other quantities are contained in tables.
The study of one spectrum of comet Mrkos obtained on 1957 August 23 with an objective prism of dispersion 52 A/mm for λ 4000 A is given in this paper. and Článek doplňuje list se snímky komety (nestránkováno)