Twilight observations with MASS/DIMM B. Safonov Sternberg Astronomical Institute Moscow State University Comprehensive Characterization of Astronomical Sites, 2010 B. Safonov (Moscow State University) Twilight observations with MASS/DIMM SITE 2010 1 / 17 Why observe in twilight with MASS/DIMM? ... ASM includes 3 devices sensitive to background: guider, DIMM and MASS. B. Safonov (Moscow State University) Twilight observations with MASS/DIMM SITE 2010 2 / 17 Background in guider. ...

A computer controlled low light photometer for nightglow observations. Hardware units of portable photometer for low light measurements, especially night glow emission is described. ... Interface card contain three channels of 24 bit counter, 4 channels of 12 bit ADC and the buffer bus for the controlled motors of the altazimuthal fork mounting and filters wheel, the position encoders. ... Where N( ) is output signal photometer generated input light flux F( l ) . ... PMT # . 599 . ...

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... Master . Master net Homepage . ... MASTER-Amur . ... Amb: . Dust: . ... Direct . 23s . ... 45s . ... observed area: . best limit: . Cameras . ... MASTER-Tunka . ... MASTER-Ural . master.kourovka.ru . ... MASTER-Kislovodsk . ... MASTER-Crimea . ... MASTER-SAAO . ... MASTER-IAC . ... MASTER-Argentina . master.sai.msu.ru:8080 . master.sai.msu.ru . ...

... The caption to Color Figure 3 refers to the source 1928+734, which should be 1928+738. In the summary section on page 49 (Murphy et al.), the sentence "In that time, we have observed a variety of structural changes in the inner jet region near the region." should read "In that time, we have observed a variety of structural changes in the inner jet region near the core." In the references on page 175 (Fomalont et al.) and page 182 (Moellenbrock et al.) ...

ASTRONOMY . ASTRONOMY is a science, which studies solids and occurrences in the sky. ... They built the picture of the world according to their knowledge. With the course of time the world picture was being changed because there appeared new facts and information and new theories on the celestial occurrences and what is more impotant there appeared an opportunity to check up the correctness of ideas through the observation and measuring using the new achievements of the sciences. ...

Pulkovo NEO Page . ... EPOS Software Package . ... EPOS ( E phemeris P rogram for O bjects of the S olar system) is the Windows PC application for study and ephemeris support of observations of the Solar system objects. ... It controls the part of common data and transfers the control to one of the programs that solve the restricted set of tasks. ... So with the EPOS software package one can calculate the accurate ephemerides for many objects and get the quick illustration of their motion as well. ...

Previous Editions of the M111: . ... OutReach Training and Program . September Public Night . Welcome all ye weary travelers to a new type of M111 "On Line". ... Back to top.. ... When I logged our last outreach programs I couldn't help but notice that Warren Rupp Observatory is NUMBER FIVE in the worldwide standings in public outreach programs! ... If you'd like to train in astronomy outreach, just contact any of our members and we'll be happy to train you to do public outreach! ...

... Changed format option parsing routine in bp-p-options. added opt_reverseauthor to bp-refer, and added options parsing. 0.1.1 perl5/ad425.ref->ad425.bib in 25.3 seconds perl5/timetest.pl 2.31s total, 1.03, 1.01, 3.52 Added p-output.pl. ... No noticible change in running time, which means the debugging statements aren't slowing us down enough to worry about dropping them. 0.0.11 perl5/ad425.ref->ad425.bib in 22.7 seconds perl5/timetest.pl 1.98 total, 1.02, 1.01, 3.39 Added format registration. ...

... The mount is also adjustable so you can orient the axis of rotation to make it parallel with the Earth's axis of rotation (see the section on Polar Alignment). ... Locate the opening in the equatorial mount on the DEC axis. ... To mount the telescope tube: 1. ... ADJUSTING THE MOUNT FOR POLAR ALIGNMENT In order for the clock drive to track accurately, the telescope's axis of rotation must be parallel to the Earth's axis of rotation, a process known as polar alignment. ... R.A. & DEC axis ! ...

... Local and Regional Coordinators, and OBSERVERS are needed for Friday night's spectacular Aldebaran Occultation and Graze Aldebaran is the brightest star, other than the Sun, that can be occulted by the Moon. ... Use your camcorder (or a borrowed camcorder) to record a strong local television station. ... Encourage other amateur astronomers, and other friends and relatives in the region of visibility to record the occultation with camcorders. ... This event is called an "occultation" by astronomers. ...

Stellarium 0.12.3 . ... StelButton Class Reference . A Button Graphicsitem for use in Stellarium's graphic widgets. ... StelButton (QGraphicsItem *parent, const QPixmap &pixOn, const QPixmap &pixOff, const QPixmap &pixHover=QPixmap(), QAction *action=NULL, bool noBackground=false) . ... StelButton (QGraphicsItem *parent, const QPixmap &pixOn, const QPixmap &pixOff, const QPixmap &pixNoChange, const QPixmap &pixHover=QPixmap(), QAction *action=NULL, bool noBackground=false, bool isTristate=true) . ...

АНОНС НАУЧНЫХ КОНФЕРЕНЦИЙ 1998-99 гг. ... An AAS Electronic Announcement Dear Colleague: NASA has approved development of a Wide Field Camera 3 (WFC3) for installation in the HST on the 2002 Servicing Mission. A Scientific Oversight Committee (SOC) is being established to ensure that the broad interests of the scientific community are represented in the development of WFC3. The primary task of the SOC will be to advise the HST Project and STScI in all areas of scientific performance of WFC3. ...

Program's coordinator _ . ... Russia inherited a supermilitarisized space program; industrial enterprises and scientific organization strongly oriented to the requirements of Ministry of Defence; ground-based space infrastructure under control of military forces. ... The aim of the program: . ... Main program's directions: . evaluating perspectives of realization of existing military space projects; . substantiating variants of demilitarization of space activities in Russia Federation; . ...

... Our scientific interest is an accuracy of asteroid CCD observations obtained by amateurs and professional astronomers all over in the World. ... These data help us to analyse an accuracy of real CCD positions in the MPC Database. ... Do you test your observations of the small Solar System bodies permanently before sending them to the International Minor Planets' Center? ... Do you know a real accuracy of your positional CCD-observations in comparison with the other observatories' one ? ...

... In less then one day "Mir" station will finish its flight. ... Besides, the operability of motion control systems will be tested to ensure further dynamic operation at the final stage of "Mir" complex. ... The final third burn is given in daily orbit 2 using the "ProgressM1-5" 8 control engines and its main engine with the trust of 300 rg/s. Thus, to peform deorbit maneuver the OC"MIr" real-time tested manuevers involving control engines and their combination with the main engine are used. ...

... Space flight . Crew training . ... Space camp . ... The "Odyssey" project includes all the stages of preliminary selection and pre-flight training of the inter-planetary station crew, as well as simulates a 7-day "Earth-Moon-Earth" space mission. ... Training in crews on the "MIR" space station trainers and simulators under the interplanetary "Earth-Moon-Earth" mission program, . ... A commander (carries out a general onboard control and is responsible for the crew safety and vital activity. ...

... На Беговой ул. остановка трамвая 23, троллейбусов 5, 5к , 20, 86 и автобуса 27 ?Б-ца им. Боткина? переименована в ?Беговая аллея? ... На 2-й Квесисской ул. остановка троллейбуса 29 и автобусов 72, 82, 84, 727 ?Савеловский в-л? переименована в ?Бутырская ул.? ... На Ленинском просп. остановка троллейбусов 4, 33, 62, 84 и автобуса 111 ?Совет ВКП? переименована в ?Дворец Труда профсоюзов?; остановка троллейбусов 33, 62, 84 и автобусов 47, 113 ?М-н "Спектр"? переименована в ?Центр детского творчества? ...

... VaST is a software tool for finding variable objects on a series of astronomical images. ... VaST performs object detection and aperture photometry using SExtractor on each image, cross-matches lists of detected stars, performs magnitude calibration with respect to the first (reference) image and constructs a lightcurve for each object. ... VaST FITS image viewer ./pgfv . ... Part I" PZP, vol. ... K. V. Sokolovsky, S. A. Korotkiy; "New Variable Stars Discovered by the NMW Survey" PZP, vol. ...

... For certain blo ck diagram (var. 1) and time of working cycle ( = 1 hour) find reliability function P (S ) and operating time to failure Tf (S ). ... Write answers on following questions: · May operating time to failure for system is increased twice by changing failure rate for element number 1? ... Change trim effect mechanism such, that 5 = 0, 2 · 10-6 1/h, then S = 3, 15 · 10-6 1/h, and operating time to failure for yaw control system Tf = 0, 32 · 106 h, reliability criterion is executed. ...