Next: Rotation Periods of ZAMS stars Previous: T Tauri Stars . ... The first attempts to directly measure periodic modulation of T Tauri stars occurred in the early 1980s. Rydgren & Vrba (1983) observed four PMS stars using photoelectric photometry over a period of seven consecutive photometric nights. ... Because the spot lifetime is much longer than the rotational period, the observed effect will be a modulation of the light from the star synchronously with the rotation period. ...

National Aeronautics and Space Administration . ... Buzz Aldrin, Ph.D. (Colonel, USAF, Ret.) NASA Astronaut (former) . ... NASA EXPERIENCE: Aldrin was one of the third group of astronauts named by NASA in October 1963. ... At Nellis Air Force Base, Nevada, he served as an aerial gunnery instructor. ... Since retiring from NASA, the Air Force, and his position as commander of the USAF Test Pilot School at Edwards Air Force Base in 1972, he authored an autobiography, "Return to Earth". ...

Russian Space Science Internet (RSSI) is a successful result of RSSI Project. ... space oriented organizations; . ... RSSI offers for its members : . ... videoconferences via MBONE Internet protocol (there are 2 tunnels available now through the general IP network: one to NASA Internet, and another to Moscow State University); . ... It is designed so that all organizations connected to the RSSI gain access to the resources of Russian computer networks as well as world wide Internet. ... nic@rssi.ru ...

. Russian (WIN) . 10-27/2/1999 . 6-28/1/1999 . For more information send a mail to: info@sputnik.infospace.ru . © 1998-2002 SMIS IKI RAN and SRC "PLANETA" Moscow, Russia.

Next: The Focal Plane Instruments Up: No Title Previous: The X-ray Optics . CXO has two focal plane instruments - the High-Resolution Camera (HRC) and the Advanced CCD Imaging Spectrometer (ACIS). Each of these instruments, in turn, has two detectors, one optimized for direct imaging of x rays that pass through the optics and the other optimized for imaging x rays that are dispersed by the objective transmission gratings when the latter are commanded into place directly behind the HRMA. ...

... ARC 3.5m | Weather Closure Conditions . The enclosure will be closed by the Observing Specialist under the following conditions. ... This policy will be consulted whenever there are questions or disagreements concerning closure of the APO 3.5-meter telescope due to hazardous conditions or situations, at times when telescope operations are being overseen by an APO Observing Specialist. ... the on-duty Observing Specialist has full responsibility, and sole authority, to make this decision. ...

Direct images gallery. Here we have presented some images obtained on SAO telescopes by using SCORPIO. ... NGC 6951 . ... This color image are combined from the frames in the filters V ("blue"), R ("green") and middle-band filter SED755 ("red"). ... The true color image is constructed from three frames in B (Texp=600 sec), V (Texp=480 sec) and R (Texp=400 sec) filters. ... The true color image is constructed from three frames in B (Texp=180 sec), V (Texp=120 sec) and R (Texp=90 sec) filters. ...

... Ciel Espace, le magazine qui vous guide toujours plus loin . ... des actualit–їs . ... les plus belles images de l'Univers d–їcrypt–їes pour vous . ... Accueil Suivez en direct le lancement de Maven . ... Suivez son lancement en direct sur le site de Ciel et Espace. ... Compte tenu des conditions atmosph–їriques, les chances que le lancement ait lieu aujourd'hui sont de 60% . ... 19/12/2013 - Le lancement de Gaia en direct ! ... 08/08/2013 - Les Nuits des –їtoiles 2013 : cвАЩest parti ! ...

... HUMAN LIFE RESEARCH . ... Search for genetic criteria for revealing living organisms with a maximum possible resistance extreme conditions of a prolonged space flight. ... A study of effects of exposure to microgravity on the growth and development of biological objects. ... Beans germination in space . ... Study of the state stability of the model closed ecological system and its links in microgravity conditions, microsystem components and the advanced biological life support systems for space...

Next: C.S. Jeffery, Research Astronomer Up: Research Previous: J.E. Chambers, Research Astronomer Contents . ... We examine spectral time-series of two lower-chromospheric lines observed with SUMER/SOHO (N I and C II ). ... Two examples of explosive events observed with SUMER/SOHO in transition region spectral lines are reported here; one detected in C IV 1548?, in a region within the northern polar coronal hole, and the other in O VI 1032?, in an active region. ...

... SUPER RATIO . ... On this page I will present the most important (on my opinion) idea on Intellegence Life in the Universe . ... On the problem of the Super Ratio in astrophysics" . ... As a matter of fact, this is the main problem of the modern natural science. ... Here I shall try to speak about the most important problem of the modern natural science, the problem which is undoubtedly, of more importance than discovery of Blacks Holes, creation of Grand Unification Theory or Artificial...

... Executable GOTO statements . ... Input/output statements . ... GOTO statement_number_variable, (snr1, snr2, snr3) - an assigned GOTO statement, jumps to the statement number that equals the statement number variable (an arbitrary number of statement numbers snr are permitted). GOTO statement_number_variable - this is an assigned ordinary GOTO statement, it is a combination of the first one, GOTO snr1, and previous one, GOTO statement_number_variable without a list of permitted alternatives. ...

... Телескопы . ... Планеты . ... Фотографии Планет . ... Телескоп Celestron Advanced C9.25-SGT (XLT) , f/20 , камера Celestron NexImage , сложено 1680 кадров в RegiStax 3 . ... Диаметр планеты 1 4" . ... Т елескоп Advanced C9.25-S GT XLT , NexImage + барлоу 2х НПЗ, фильтр Baader IR-Blocking, 10fps, 1/30сек. ... Т елескоп Advanced C9.25-S GT XLT , NexImage + барлоу 2х НПЗ, 10fps, 1/30сек. ... Т елескоп Advanced C9.25-S GT XLT , f/30 , NexImage, 10fps, 1/ 2 0сек. ...

... October 6, 09:00 09:40 . Jorge Melnick (ESO) . ... We present a statistical and temporal analysis of the ground meteorological properties recorded at the five selected sites for hosting the European Extremely Large Telescope (EELT). ... Marc Sarazin (ESO) . The organization and development of the E-ELT site testing campaign by ESO are described. ... The E-ELT Site Testing activities in northern Chile and Argentina are reviewed, and pioneering explorative campaigns are illustrated. ...

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