This series of delay-doppler radar images of the asteroid 4769 Castalia (also known as 1989 PB) were taken at approximately 2 minute intervals on 1989 August 22 at the Arecibo Observatory. ... These images have been stretched to look decent on a browser, rather than for accuracy. ... Thus these images have a frequency resolution of 0.24 Hz (~40 m), and a frequency sampling of 0.12 Hz, but the signal to noise ratio should be 2 times worse, as only 6 looks can be summed. ...

ERS -1,2 SAR . ... SIR-C/X SAR . ... European Remote Sensing Satellite (ERS-1) was launched on 17 July 1991, and the follow mission ERS-2 (with the same sensors and an Ozone monitoring instrument added) was launched on 21 April 1995. ... The Spaceborne Imaging Radar-C/X-band Synthetic Radar (SIR-C/X-SAR), carried in the cargo bay of the Space Shuttle Endeavour in April and October of 1994, simultaneously recorded SAR data at three wavelengths (L-, C-, and X-bands; 23.5, 5.8, and 3.1 cm, respectively). ...

Command execution times have one second resolution . ... By convention, does not execute any commands which reconfigure SI hardware . Can shut off entire processor, cannot shut off by SI . ... Common Pool Command sequences (RTCSs) are routinely loaded from the ground . Some Common pool sequences are used for one-time execution (e.g. for a single exposure) . Some Common pool sequences are permanently on-board . ... Previous slide . Next slide . Back to first slide . ...

Solar High Resolution Studies . ... Solar Group . ... High Resolution Studies . Small Scale Activity . ... High resolution observations at different heights in the solar atmosphere have emphasized that there is no such thing as a "quiet" Sun (e.g. Schrijver et al., ... This, and the temporal coincidence of other signatures, supports the idea that microflares are indeed just miniature flares, but that one needs a very high resolution in order to observe them (Cauzzi et al., 2003, in preparation) . ...

... In combining the data, it is assumed that the low resolution image better represents the short spacing data, whereas the high resolution best represents the fine structure. ... Key: out The output image. ... Key: factor The flux calibration factor. ... In practise, the calibration may not be perfect, and an extra calibration factor will be required to align the flux scales. "factor" gives the factor to scale the low resolution image to put it on the same flux scale as the high resolution image. ...

... 2005 October 5 . Annular Solar Eclipse at High Resolution . ... The event was not a total eclipse of the Sun for any Earth-bound sky enthusiast but rather, at best, an annular eclipse , where the Moon blocked most of the Sun. ... Those who witnessed the solar eclipse from a narrow path through Portugal , Spain and Africa , however, were lucky enough to see the coveted Ring of Fire , a dark Moon completely surrounded by the brilliant light of the distant Sun. ... About APOD | ...

... Дни открытых дверей к юбилею САО РАН (12-14 апреля 2016 г.) . Международная конференция "Dark Ages and White Nights (Spectroscopy of the CMB)" (20-24 июня 2016 г.) . ... Международная конференция MULTI-SPIN GALAXIES - 2016 (26-30 сентября 2016 г.) . Международная астрономическая конференция "Физика звезд: от коллапса до коллапса" (3-7 октября 2016 г.) Архив . ... Подробнее.. ... 10.02.16 . ... БТА в реальном времени . ... Цейсс-1000 в реальном времени . ... Последнее обновление: 22/03/2016 ...

The VSM: Lunokhod-2 25-year anniversary . Luna-21 with Lunokhod-2 landed on Moon 16 January 1973. ... All photos here except full Moon and Mare Serenitatis were made by author in NPO Lavochkina museum. ... which is very similar to Lunokhod-2, except its cameras. Luna-21 landed 15 Jan at 23:35 GMT inside 55-km Le Monnier crater on the eastern edge of Mare Serenitatis. ... Frame - Mare Serenitatis . ... Any wheel could be permanently disconnected from its motor if the motor gets stuck. ...

... Let us first find out which way -- rise in spectral resolution with some loss in the S/N ratio or increase in the S/N ratio with a fixed spectral resolution -- is better for the purpose of reduction of equivalent width determination errors. ... N -- number of counts for 1 ? ... line equivalent width, . ... Thus if the spectral resolution is managed to be increased (i.e. to decrease )without loss in the number of counts falling at 1 ?, the equivalent width measurement error is then proportional to . ...

... The value of tile-size, NW , may be thought of as a sixth coordinate axis in the chirplet transform parameter space - TF-area. Including this sixth coordinate axis provides us with a hierarchical (multi-resolution) CCT. ... Various 2- D slices through the multiresolution CCT may correspond to useful tilings of the TF plane with true parallelograms (true to the extent that the DPSS define a truly rectangular region in the TF plane). ...

To main of Laboratory . The research work and design of optical and optical-electronic devices are carries out by laboratory staff: . ... Lens: . ... In the layout 1 prism systems perform functions of dispersive element, corrector of aberrations, optical reducer. ... Spectral range 200 - 400 nm; . ... Back Forward . ... The main corrector's function are compensation of field aberrations of the main spherical mirror of a telescope (diameter of 600 mm, f'=1200 mm) and increase aperture ratio. ...

... Science . ... Science Users Information > Science and Technical Meetings > Conferences 2014 > High Resolution 2014 . ... Science Users Information . Observing Facilities . ... Instrumentation Development . Future Facilities and Development . ... Observing with ESO Telescopes . ... Data Handling and Products . ... ESO Data . ... Recent years have seen a huge development in high-resolution astronomical techniques, which are critical to progress in many different areas of astronomy. ...