ABSOLUTE PROPER MOTIONS OF 331 OPEN CLUSTERS . ... The proper motions of stars in the fields of 331 open clusters were taken from Four-Million Star Catalog (4M-catalog) of positions and proper motions (Volchkov et al. ... The absolute proper motions for 21 young open clusters have been derived by comparison of precise relative proper motions of individual stars and their corresponding absolute proper motions. ... Sign of proper motions in RA . ... 0.0001 arcsec/yr . ... rms error in RA proper motion . ...

Journal of the Amateur Astronomers Association of New York July 2007 Volume 55 Number 7, ISSN 0146-7662 EYEPIECE AAS Meeting Illustrates Changing Nature of Astronomy By Rachel Berger Connolly Standing in the Honolulu Convention Center for my first American Astronomical Society meeting in May, I realized that time and technology does a lot to a field of research so dependent on imaging and automation. ... On July 1, only 47 arcminutes separates Venus from Saturn. ... July's Constellations. ...

Альтернативный форум . Scientific.ru Все форумы . ... Ilya - 09.10.2006 14:33 . ... x203a; x203a; x203a; в ответ на: и еще Михалыч . ... Time, 09.10.2006 00:02 . ... Re: Одна седьмая одной седьмой рознь :) Михалыч, 11.10.2006 08:07 . ... ИМХО вне формата опроса Михалыч, 09.10.2006 13:10 . ... Re: 2all: опрос пианист, 09.10.2006 11:48 . ... Re: 2all: опрос Давид Мзареулян, 09.10.2006 22:08 . ... Re: 2all: опрос Vallav, 09.10.2006 14:09 . Re: 2all: опрос ЕК, 09.10.2006 12:34 . ...

Winer Observatory P.O. Box 797, Sonoita, Arizona 85637-0797, USA . ... Irvin M. Winer . ... Site Map . ... Hint : Find and stay on Arizona State Route 83, which bounds our property). Use the interactive map below or use our GPS position N31 39' 56.08" W110 36' 06.42" (or 31.665578N, 110.601783W). ... From Tucson, take I-10 east about 20 miles to Exit 281, which is marked "State Route 83 Sonoita/Patagonia". ... Go three miles, staying on the paved road of State Route 83. ... 2013 Winer Observatory. ...

... Exposure Time Calculator (ETC) . Survey processing . ... VISTA is a 4-m class wide field survey telescope for the southern hemisphere, equipped with a near infrared camera (1.65 degree diameter field of view at VISTA's nominal pixel size) containing 67 million pixels of mean size 0.34 arcsec and available broad band filters at Z,Y,J,H,K s and a narrow band filter at 1.18 micron. A wide field visible camera, if constructed, could also be used on VISTA. ... Tile . ... ESO VISTA Public Surveys . ...

... ISC Kosmotras . Top Management Founder of ISC Kosmotras - Dr. Vladimir A. Andreev News . ... Cluster Launch of Dnepr LV 22 August 2013 KOMPSAT-5 Launch 21 November 2013. Dnepr Cluster Mission 2013 19 June 2014. Dnepr Cluster Mission 2014 6 November 2014. ... The launch was executed by the Strategic Rocket Forces of the Russian Ministry of Defense with the support of the Russian and Ukrainian companies, which are part of the ISC Kosmotras industrial team. ... All news . ... News . ...

... VLBA+Italy survey (to contact the schedulers) (closed) E.Fomalont and J.Romney: To provide some review of problems happened with fringe search in VSOP project. (closed) M.Popov : To compose a tentative time -table of possible observations , and inform the observatories on the specific time slots that might be requested for fringe search program in October-November. (continued) C. Gwinn: to try to compile FAKERAT software on modern platforms. (closed) GBT and ...

Computer Ephemeris. Second order reduction quantities. Explanations. This page consist of four little tables. First and second tables contains J a (in 0.000001 s ) and J d (0.0001") for nothern declination, third and fourth contains the same information but for southern declination. Each table have 13 informational columns headed with right ascension values, and some amount of rows, labelled with date. ...

Maxim Tarasenko , a leading Russian space history scholar and a member of Space Policy?s editorial board, who contributed greatly to the elucidation of the Russian space programme in the journal and elsewhere, died in 1999. In order to commemorate his pioneering work in space policy, Elsevier Science has decided to hold an annual competition, open to all law school students and graduate students of space policy, to find the best essay. ...

... un oculaire Orion DeepView 35mm (2") . un oeilleton de collimation (le Takahashi offert plus bas Гїtant plus prГїcis) . ... un ventilateur pouvant Г?tre fixГї Г la base du tube pour faciliter la mise en tempГїrature du mirroir primaire . les outils necessaire pour le montage/demontage et le rГїglage (tournevis, clГїs Allen etc.) . et bien entendu la commande et les cГ?blages pourle GoTo, le porte oculaire, adaptateur 2", le manuel Orion etc. ... Oculaire de collimation Takahashi (1.25") . ...

... Limit of star magnitude. If you want to obtain best results, you should use reference stars not more dimly than limiting star magnitude of your telescope. Limiting star magnitude depends on time of an exposition also.) This value should be set as " maximum of star magnitude " in a dialog box " Extraction from catalogue". To find darkest stars in the frame, make the following: . ... Two star magnitudes (m1, m2 in two photometric systems) will be outputted in the window "Information". ...