... NOTE that this call also sets the state of the cal to the returned instrument. The and are obtained from respectively from the INSTRUME and DATE-OBS keywords of the dataset header. The is read from the RA_PNT , DEC_PNT and PA_PNT keywords (this is actually wrong, since the instrument attitude is what should be stored in these, not the spacecraft attitude). The boresight is then obtained for the exposure start time, and calculated by applying the boresight rotation to . ...

... Charge Coupled Devices (CCD) are currently by far the most widely used type of detector in astronomy. ... After a brief introduction to the VLT Control System, the VLT CCD Detectors Control Software is presented. The VLT Control System is a distributed system consisting of a set of UNIX Workstations, dedicated to high level operations, such as coordination of sub-system activities and interface to the users, and VME-based Local Control Units (LCU), dedicated to the control of sub-systems hardware. ...

... Staff Directory . ... Data . ... Research . Research Staff Directory . ... STScI Help Desk . ... The mission of the Research and Instrument Analysis Branch (RIAB) is to assist Instrument Scientists and HST General Observers in the processing and analysis of scientific, calibration and engineering data. ... Their duties are typically focused on manipulation and interpretation of data (i.e. images, spectra) using science software tools such as STSDAS/IRAF and IDL within a Unix operating environment. ...

GRANAT is the Russian x-ray sattelite launched to the high apogee orbit (200,000 km) and operated almost for 10 years (1989 -1999) , carrying out four major instruments: French SIGMA coded-mask hard x-ray telescope (30-1000 keV), Soviet ART-P coded-mask telescope (2??-60?? keV), all-sky monitor WATCH (6-150 keV), and a gamma-burst detector PHEBUS . ... Since September 1994, GRANAT is in the survey mode. ... Explore pages devoted to individual GRANAT instruments (including main scientific results): . ...

Magnetic field measurements onboard the Interball Tail spacecraft are carried out by the FM-3I instrument which consists of two flux-gate magnetometers covering two different ranges: [-200, +200] nT and [-1000, +1000] nT. Besides scientific goals, the FM-3I experiment data is used to perform the attitude control of the Interball Tail spacecraft. ... August 22, 1995 . ... October 18, 1995 . Top of the page . ... Back to the Interball Home Page . ...

Quality Control and . ... INSTRUMENT QC: . ... VLTI . ... Trending means following the evolution of data and instrument quality with time. The main goals of ESO data quality control (QC) are: . ... More complete and in-depth checks (QC1, trending) are done at ESO headquarters in Garching by the Quality Control Group. The complete trending history of each VLT instrument is also maintained here. Go to the above links for instrument specific information about trending and QC. ...

... It was designed to observe the solar wind approaching Earth, from a position near the Lagrangian point L1, and it is part of the International Solar-Terrestrial Physics (ISTP) Initiative . ... The original plan called for "Wind" to approach its final station over two years, undergoing two close encounters with the Moon to boost its speed. ... If however the object is moving , the encounter is not symmetric, and in the end the spacecraft may have gained or lost speed, depending on its trajectory. ...

Next: Summary of reduction Up: Echelle Reduction Previous: Saving the Data . In the present version we will be concerned with the standard configuration of CASPEC, the Cassegrain Echelle Spectrograph which is in operation at the Cassegrain focus of the ESO 3.6 m telescope. ... In its standard configuration CASPEC uses a a 31.6 lines/mm echelle grating together with a 300 lines/mm grating cross disperser. ... The table shows the change in resolution with the order number. Table: Resolution . ...

Target: Venus . The Soviet VEGA Spacecraft Two remarkable "busloads" of automated spacecraft were launched toward Venus by the Soviet Union in December of 1984. Each one contains three separate modules: one lander and one balloon-carried atmosphere probe to be dropped off at Venus in June, 1985, and one major package of instruments which will continue on to encounter Halley's Comet in March, 1986. ... Venus and Earth: A Comparison . Earth . ... in Earth days) . ... 243 Earth days . ...

STEP INTO THE BLUE - MEADE