... HST . ... Data . ... HST Overview . Overview . ... Retrieving HST Data . ... Space Telescope Users Committee . ... The reduced wavelength and flux files have suffixes of .c0h and .c1h (for a complete explanation of file suffixes, see Table 35.1 ). ... If we use fwplot to plot the a small part of the reduced spectrum with its errors (Figure 35.13 ) we get essentially the same information in a more compact form, and we can see that the errors are the statistical ones calculated from raw counts. ...

True Color Image Gallery: Galactic SNR | Magellanic Cloud SNR . ... Radio Images Page . ... Exposure uf . ... Exposure uf Exposure time of unfiltered event file . Exposure f Exposure time of filtered event file . ... Event 2 FITS File . ... AUX file . ... Region . ... see fit detail page for more about the fit. see chandra spectrum page for region used. Images in Several Energy Bands . ... Spectra of Several Regions . ... 1.0" . ... in central region . ... in central region, double? ...

... The J, H and K bands are characterized by a bright background, such a background is mainly due to the emission of atmospheric lines and of thermal radiation. ... If the source cover a large fraction of the slit, spectra off-source must be observed to adequately sample the sky background. ... The on chip integration time (time spent in each position of the slit) must not exceed 40 seconds in J and H bands and 60 seconds in K band. ... We suggest a sequence of 10 for each elementary integration time. ...

This section describes how to reduce Hydra Cal data into .cal files and then into an .scal file. Cal files just give the system and cal counts on a given patch of sky. scal files give the conversion factor between the cal and Jy. When reducing pulsar observations the software requires an observation of Hydra and a calibration near the pulsar observation. ... This should create a .cal file and move it into $calpool (the directory pointed to by the calpool environment variable). ...

... Science . ... Science Users Information > Science Publications > Science Announcements > FLAMES/GIRAFFE Reduced 1D Spectra Available from ESO Archive . ... Phase 1 Proposals . ... ESO Data . ... All spectra obtained with the FLAMES/GIRAFFE spectrograph in the multi-object (MEDUSA) mode, from June 2005 until December 2014, are now published via the Science Archive as reduced data. ... The GIRAFFE_MEDUSA data collection will grow with time, with new reduced spectra being added with a monthly cadence. ...

Next: Preliminaries Up: PEPSYS general photometry Previous: Getting the observations . Preliminaries . ... Subtraction of dark and sky measurements . Sky models . Using the sky model . ... Extinction and transformation models . The bias problem . ... Individual data . Logfile output . Table file output . Interpreting the output . Special problems . ... Special systems . ... Sky problems . CCD data . Problems with star names . ... Tue Mar 28 16:52:29 MET DST 1995 ...

... 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 . ...

... As modern observatories evolve to production units delivering data products and calibrated scientific data to the end users, new challenges arise in assessing the quality of data products. ... Taking the analogy of speed control on a motorway we can describe the system as a device (radar) collecting measurements of the system performance (passing cars). ... One of the direct applications of quality control is the verification of instrument performance based on the analysis of calibration exposures. ...

... These partially reduced images of the Pleiades were taken by WISP using its longer-wavelength (2180 ) UV filter. Point-spread functions (PSFs) of the brightest stars have been removed to reveal much of the inner reflection nebula, both in a centralized diffuse glow and in the nebulosity south of Merope, the bottom star in the Pleiades ``bowl''. The PSF removal process was improved since these images were produced. Better ultraviolet images can be found here . ...

... Ser. 27,21 # by adding a constant offset in m_AB. The offset is determined for the region # 5250-9200 Angstroms. ... SET .Z.UNITS = mjy SET .Z.LABEL = Fnu SET .TABLE.BANDWIDTH = 50 SET .TABLE.LAMBDA_DOUBLE = 11000 * 3050.000 2.741 3100.000 5.483 3150.000 7.639 3200.000 9.151 3250.000 10.653 3300.000 11.985 3350.000 13.154 3400.000 13.901 3450.000 13.142 3500.000 14.718 3550.000 14.992 3600.000 14.637 3650.000 15.756 3700.000 14.370 3750.000 9.787 3800 ...

... They were determined as a result of orbit improving on the base of all kinds of optical observations available in the catalog of observations of the Minor Planet Center on March 16, 2014 (radar observations have not been used at this stage). ... As the MPC orbits do not all were improved simultaneously with EMP orbits, only 383866 sets of elements were used for data comparison (for selected sets of elements process of improvement had started with the use of the same observations). ...

... We have started a programme of observations of nearby starburst and AGN galaxies with MICHELLE, with the aim of investigating the spatial extent of "Unidentified Infrared Bands (UIB)" emission in these galaxies, and in particular relating these to multi-frequency matched resolution radio maps. ... The spatially integrated MICHELLE spectrum of NGC 7469 in the 8 - 11.5µm range shows an equivalent width of 11.3µm UIB feature which is much smaller then measured by ISO. ...

Physical parameters for subdwarf B stars with composite spectra R. Aznar Cuadrado, C.S. Je ery Armagh Observatory, College Hill, Armagh BT61 9DG, N. Ireland rea@star.arm.ac.uk, csj@star.arm.ac.uk Abstract Intermediate-resolution spectra have been obtained for a number of subdwarf B stars having both single and com- posite spectra. Physical parameters have been determined for the sdB stars and, in composite-spectrum systems, their cool companions. ... 2001). ... For all composite systems, y  0:01. ...

World coordinates added with astrometry.net Images co-added with swarp Color images composited in ds9 and aladin image_00097.fits TARGET = ' NGC 7320 SQ' / target EXPTIME = 1.0E +02 / exposure time (seconds) FILTER = ' (1) g (400-530) ' / filter DATE-OBS = '2011-11-01T04:27:22' / date of observation (UT) image_00098.fits TARGET = ' NGC 7320 SQ' / target EXPTIME = 1.0E +02 / ...

Peremennye Zvezdy ( Variable Stars ) 32 , No. ... We report on a new episode of decretion disk formation in the IGR J06074+2205 system. ... From a study of three HeI lines, the rotational velocity of the star was determined as km/s. After five years of spectroscopic monitoring of IGR J06074+2205 (Reig et al. 2010), a reversion from emission to absorption of the H line and hence disappearance of the equatorial disk was reported. ... Reig P., 2011, Astrophys.& ...

Next: NICMOS/HST H-band (F160W) Images Up: NICMOS Science Previous: HST NICMOS Observations of . ... Observations of P . ... The NICMOS team has devised a comprehensive program of observations of the Galactic Center. ... Data in hand give a first look at variability and a detailed look at the search for the tip of the main sequence will be discussed where NICMOS has demonstrated adequate sensitivity and photometric precision to identify likely O8-B1 stars at the Galactic Center. ...

... Amended column headings (Exp Duration became Duration) - Added OM products from OMSW to OM report - Added RGS products from RGSSRC to RGS report - Fixed missing products from PPS index Version 2.2.3 - 01-03-29 ------------- - Change layout for consistency with OBSSUMM Version 2.2.2 - 01-03-26 ------------- - warn rather than error when NoPPSOBStoHTML Version 2.2.1 - 01-03-22 ------------- - Changed layout and content of HTML ... Changed HTML layout slightly. ...

... A radio galaxy is a galaxy that emits an unusually big amount of energy at radio wavelengths. ... Inside of each galaxy with an active nucleus (radio galaxies are among them) there must be a system of a "central machine" responsible for the colossal amount of the emitted energy from radio to gamma ranges. ... Sometimes a radio source in an active galaxy may flare again if the needed conditions appear (a new portion of matter would fall into the furnace of the "central machine"). ...

For solar wind dials without any explanatory text, see this page . ... There are three logs, one for each condition index ( K P , Solar Wind ,and NOAA/SEC .) ... More about the solar wind's recent behavior can be found on my Current Solar Wind Conditions page. ... Other items of interest include NOAA/SEC Current Conditions , my composite current Auroral Images page, Windows on the Universe: Space Weather , and Public Outreach Index, Department of Space Physics and Astronomy, Rice University . ...

APO/GIFS Instrument Factsheet The Goddard imager and Integral Field Spectrograph (GIFS) has recently been commissioned on the APO 3.5 m telescope. This factsheet presents a high level overview of the GIFS instrument. ... GIFS Imaging The GIFS imaging mode is used for imaging science and target acquisition for the IFS mode. ... Imaging Mode pixel scale: 0.168"/pixel · Comparison to Other APO 3.5m instruments: The GIFS field of view is smaller than SPICAM, but the filter set is far more extensive. ...