WFC3 Instrument Handbook for Cycle 24 . ... Wide Field Camera 3 Instrument Handbook for Cycle 24 > Appendix B: Geometric Distortion > B.4 Summary . B.4 Summary . Images produced by both WFC3 channels are affected by considerable geometric distortion, dominated by a linear anamorphism introduced by the tilt of the image surface with respect to the chief ray. ... Distortion solutions derived from data taken during SMOV with UVIS filter F606W and IR filter F160W are presented here. ...

XMM-Newton Science Analysis System Page: 1 ppssumm January 10, 2003 Abstract Produce an HTML summary page for any XMM instrument, or produce an HTML summary of the pipeline processing of an observation (including PNG or PS product le links). ... The product and processing information for the PPS Catalog information. ... NoLogoBanner (warning) (warning) corrective action: corrective action: No LOGO to be written to HTML le.NoINSTSUMMtoHTMLNo INST- SUMM records written to HTML. ...

... Radio telescope interferometers exhibit chromatic aberration effects. ... Reduction packages such as AIPS and AIPS++ will produce a beam pattern image for each frequency channel. This allows these packages to compute a spectral-line cube which has a pixel size (cellsize) independent of frequency. ... Because of this, Miriad produces cubes where the pixel size changes with frequency. ... The correct approach is to produce a cube in Miriad which does not have a variable pixel size. ...

... The Science Operation Department is composed of Astronomers, Telescope Instruments Operators(TIOs) and Data Handling Administrators(DHAs). ... Astronomers have proposed several methods to quantitatively measure the amount of turbulence above the telescope, which the most common ones is Differential Image Motion Monitor (DIMM). In optical testing, the Hartmann test is the common method to test the quality of optical components. ... Hartmann mask consists of 48 lenses. ...

... GSAOI Home . Instrument . ... The Gemini South Adaptive Optics Imager (GSAOI) is a near-infrared adaptive optics camera that will be used with the Multi-Conjugate Adaptive Optics (MCAO) system on the Gemini South 8-m telescope . ... Gemini's major instrumentation goal is to develop its Multi-Conjugate Adaptive Optics (MCAO) system for scientific use on Gemini South. ... Existing adaptive optics systems use a single natural guide star or artifical laser guide star to measure this image blur. ...

Next: The Transmission Gratings Up: The Instruments Previous: The Instruments . ... A conventional cross-grid charge detector reads out the photo-induced charge cloud and the electronics determine an arrival time to 16s, and the position with a resolution of about 18 m or 0.37 arcsec. ... The Massachusetts Institute of Technology's Center for Space Research, in collaboration with Lincoln Laboratories, developed the detector system and manufactured the CCDs; Lockheed-Martin integrated the instrument. ...

STEP INTO THE BLUE - MEADE INSTRUMENTS PRODUCT GUIDE . ... Telescopes . LX850 Series . ... Superb optical performance coupled with time proven computerized pointing and tracking has made the LX200 ACF series a best-seller in the high-performance telescope class. ... Meade's revolutionary LS LightSwitchтДв series of telescopes use advanced technologies to do what no other consumer telescopes have done before: take all the hassle out of using a telescope. ... Coronado€о Solar . ... Spotting Scopes . ...

... CCD is a NICMOS 3 HgCdTe Focal Plane Array (FPS) 256x256 CCD . CCD pixel size = 40 m . CCD gain = 4.73 e - /ADU 0.2 (K.Gloria measured in 1994: 4.56 e - / ADU ( see plot here ) . CCD read noise = 110 e - / pixel 20 . ... Pixel scale = 0.48"/pixel @ f/5 (120 arcsec FOV), 0.24"/pixel @ f/10 (60 arcsec FOV), 0.11"/pixel @ f/20 (30 arcsec FOV) all binned 1x1 . ...

Next: Fitting the Blaze Up: Instrument Response Correction Previous: Instrument Response Correction . ... This flux has to be corrected for two effects in order to get absolute fluxes: first, for the echelle blaze effect, and second, for the chromatic response of the instrument. ... The solution adopted in the reduction, using the standard star љ , is to correct for both the blaze effect and the instrument response simultaneously. ...

Astronomy Picture of the Day . ... 12.10.1996 . ... NASA/GSFC ) and The GOES Project Explanation: What alien planet's bizarre landscape lurks below these fiery-looking clouds? It's only Planet Earth , of course -- as seen on the Water Vapor Channel. Hourly, images like this one (shown in false color) are brought to you by the orbiting GOES 8 satellite's multi-channel imager . ... Bright regions correspond to high concentrations of water vapor while dark spots are relatively dry areas. ...

The polar oval complete and partially visibility for the optical instruments on board of the AURORAL PROBE are shown by different symbols . The polar diagram of the Spacecraft positions magnetic mapping during polar oval visibility for the UVAI and UVSIPS cameras. The polar diagram shows the Spacecraft corrected geomagnetic co-ordinates : co-latitude - local time . ... The real time visibility (Moscow time MT=UT+3h). Date is shown along the X-axis, the MT - along the Y-axis. ...

... The top panel shows Stokes I (black solid line, in arbitrary units, and not corrected for the instrument response), P V (red solid line centred about 0), and the null profile (blue solid line, offset by -0.75 % for display purpose). ... The slope of the red interpolating lines in the bottom panels gives the mean longitudinal field from P V (left panel)and from the null profile (right panel, the latter being expected zero), both calculated using the H Balmer lines only. ...

hstpolsim -- Produce simulated polarization input data frames for HST instruments . ... inint = "" [name] . ... Name of the HST instrument for which simulated polarization images are to be produced. ... Name of the instrument specific polarizing filter for simulated images (ignored for SPECIAL instrument). filtname = "" [name] . Name of the instrument specific colour filter for simulated images. ... The header parameter FILTER provides the filter name and POLANG the polarizer angle. ...

... The Data Flow System Operations Model for VLT/VLTI Instrumentation details the process of production and operation of the pipelines, quality control, and instrument models, in order to guarantee the quantitative predictability and performance control of the instrumentation during the operations of the VLT Observatory. Pipeline processing will be available for a subset of the VLT instrument modes. ... Pipeline and Quality Control Specifications Document (in preparation) . ...

Arecibo Proposal No. ... And I guess the primary one-dimensional message is more understandable by unfamiliar aliens and the music is the most universal expression of intellectual activity by means of one-channel ear-like radio link. ... So, I suggest to implement the 1st Theremin Concert for Aliens from Arecibo or Evpatoria Radar facility. ... There were four Messages from Earth to proposed aliens -- two material (Pioneer Plaque and Voyager Record) and two ethereal (Arecibo-1974 and Evpatoria-1999). ...

Next: The Multimission Archive at the Space Telescope Science Institute . Up: Archiving . ... As part of the agreement between NASA and ESA on the continuation of the collaboration on HST, the ST-ECF has been charged with the production of the Post Operational HST Science Instrument Archives (POA). Starting with the Faint Object Spectrograph the data from the instruments which have been removed from the HST will be re-calibrated and made accessible in a uniform manner. ... Rosa 2 . ...

The Planewave Instruments 20-inch (0.5-meter) f/6.8 corrected Dall-Kirkham telescope at Moore Observatory in Kentucky and its identical companion at Mt. ... The CDK20 North at Moore Observatory has been our primary platform for developing technology for remote and robotic operation in the Shared Skies program. ... g'r'z'i' filter wheel . ... Axis quad video server to send realtime video to the remote observer . ... Telescope monitor camera in the dome also on the video server . ...

Next: Model Spectra for Spectral-Fitting Up: Spectral Analysis Previous: A Quick Look at . ... For ROSAT PSPC data, this conversion is done during the on-line (SASS) processing. For IPC observations, the instrument gain varies both across the detector and in time, and is applied during off-line processing (PROS) using the BAL histogram. By default, spectra are extracted in PI bins for PSPC data and in PHA bins for IPC data. ... Special techniques are required when using Einstein IPC data. ...

... Exposure Time Calculator (ETC) . ... ESO - Public Surveys . ... the recommended values to use for DIT, . ... Detector on-chip integration (DIT): seconds. to your chosen value - a separate page gives recommended values to use for DIT - for modes 1 and 2 below you may wish to start with the maximum recommended values as these will minimize the effect of read noise (a total object exposure of Y secs with DIT=X secs will produce Y/X lots of read noise) and give you a lower limit on the time needed. ...

... Team . ... The main goal of observations of GRB host galaxies is accumulation of statistics of their spectroscopic and photometric properties. ... The Hubble diagram for 22 GRB host galaxies with known magnitudes and redshifts (GRB 970228, GRB 970508, GRB 970828, GRB 971214, GRB 980613, GRB 980703, GRB 990123, GRB 990510, GRB 990712, GRB 9912008, GRB 991216, GRB 000131, GRB 000210, GRB 000301C, GRB 000418, GRB 000911, GRB 000926, GRB 001109, GRB 010222, GRB 010921, GRB 011121 and GRB011211). ... 600...