... In accordance with the de-orbit plan the OC "Mir" is in a waiting mode continuing its deceleration in Earth atmosphere. During the previous day the OC "Mir" onboard systems were subject to a routine check out, the current trajectory parametres were registered. The processed information confirms the MCC readiness for the final stage dynamis operations with the OC "Mir". ... The first corrective impuls ( the cargo ship "Progress M1-5" 8 control engines are fired): . T burn start - 03.32; . ...

... Maps of six sources (0420+022, 0420-014, 1308+326, 1345+125, 1803+784, and DA 193) obtained with milliarcsecond resolution are presented and discussed, together with their broadband (1­22 GHz) spectra obtained on the RATAN­600 radio telescope at epochs close to those of the VLBI observations. ... The image (Fig. 5) shows that the source structure at 18 cm is compact, consisting of a VLBI core and two jet components, with the outer component lying 5 mas (30 pc) to the northwest of the core ( = 54 ). ...

... A non-linear relationship is observed between the sky brightness on clear and overcast nights, with a change in behavior near the rural to urban landuse transition. ... The great variation in skyglow radiance observed from site-to-site and with changing meteorological conditions underlines the need for a long-term international monitoring program. he introduction of artificial light has caused an unprecedented disruption to the nighttime environment over large areas of the Earth. ... Data processing...

... 23 Algorithm fo r evalua tion of two burn maneuv ers using linearity Input information: ( t t E1 , rEI , v t1L , t E2 2L ( ) EI )T )T ­ ­ ­ ­ the time and the state vector of initial orbit for this time ; interval of possible thrusts for transition from initial orbit to the transfer on e; the time and the state vector of the target orbit for this time ; ... We cal culate the state vector for the initial orbit for the time t1a and the target one ­ for the time t2 a . ...

Правильная установка полярной оси телескопа. ... Полярный искатель, которым комплектуются некоторые монтировки для телескопа, не может гарантировать точной установки и служит, скорее, для первичной (грубой) установки, которой обычно хватает только для некоторых визуальных наблюдений. ... Используя сильное увеличение телескопа проследите 10-20 минут за смещением этой звезды, относительно центра поля зрения телескопа. ... Он был описан в журнале Sky&Telescope за 1976 год. ... Procyon Astro Society ...