... Several composite flatfields (superflats) have been generated from all Eng. 4 flatfield observations. After removing the LED pattern, these superflats where used to identify OM bad pixels. These badpixels are real physical pixels, thus include 8x8 subpixels. ... Significant deviations from the median or average values were spotted and flagged as bad pixels. ... 8x8 subpixel negative deviation in slew flatfield . ... bad CCD pixel . any 8x8 subpixel deviation in slew flatfield . ...

. To remove duplicate lines from a file use the command: uniq in_file out_file . uniq searches the in_file for consecutive duplicate lines - a line that is immediately followed by one or more lines that are identical to it - and removes them. The result is an out_file that contains no duplicate lines. Use the sort command if you want to remove duplicate lines that occur in different parts of a file. Examples .

... The input string may contain: 1) functions ; syntax ff(..); where ff is one of the following available functions : abs(x) absolute value of x sqrt(x) square root of x sin(x) sine of x asin(x) inverse sine of x cos(x) cosine of x acos(x) inverse cosine of x tan(x) tangent of x sec(x) secans of x csc(x) cosecans of x cot(x) cotangent of x atan(x) inverse tan of x atan2(x,y) ... Any operation on a BLANK causes the result to be set to BLANK (except the function IFBLANK). ...

A problem, that can arise when moving from Fortran 77 to Fortran 90, is dependent on a usual deviation from the standard, and has to do especially with user programs. ... With many Fortran 77 implementations we wrote PROGRAM TEST REAL X WRITE(*,10) 10 FORMAT('Give X = ',$) READ(*,*) X WRITE(*,*) X END In Fortran 90 we use "non-advancing I/O" instead. ... In some old Fortran dialects the statement TYPE was used to write on a typewriter terminal and PRINT was used to write on the line printer. ...

... If two or more spectra have been taken under the same conditions, a very efficient way of removing particle hits from the raw data is to replace pixel values with large deviations from other observations with a local estimator, as done in the command COMBINE/LONG . If multiple images are not available, cosmic ray hits have to be filtered out by a different method. ... where subframe defines the region to filter. ... This step is done twice to remove the hits on the sky on each side of the object. ...

Next: Error Determination Up: *qpspec* - Extraction of Previous: Spectral Extraction of Extended . Charged particles can be removed from the source and background spectra using the master veto (MV) rate. ... For example, if MV rate = 100, the following command will remove the charged particles in the background and source spectra before determining the net spectrum. xs > qpspec vign_corr=yes avg_mvr=100 . ...

... the dark tail just above the actual trap, which can be treated with wfixup or fixpix , . cases where real objects cross the bad column, such as the object just above 2-637 in Figure 5 , . ... The standard technique for removing the effects of traps (i.e., "bad columns") is to use the . ... c1h images. ... Note that trap 2-637 from Figure 1 and Figure 5 appears to be the only trap which leaks a small amount of charge in an "upstream" direction, thus we chose a more typical trap for this example.) ...

... 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. ...

For all keywords that contain a red and a blue value, the blue value comes first. ... The full pathname, but without the trailing "b.fit" and "r.fit", that would be given to the next exposure if the basename argument is not given to the expose command. ccdHeaters=float,float . ... bluelambda2=float [M] . The center wavelength for the given grating: the 1 or 2 indicates the grating bay. The bluelambda and redlambda keywords match one set of these, depending on the position of the turret. ...

... Publications with ESO Data . ... The tools have been developed for ESO by a team of astronomers at the Institute for Astro- and Particle Physics at the University of Innsbruck, as part of an in-kind contribution to ESO , which includes as well a model of the sky emission and transmission spectrum at Cerro Paranal. ... Skycorr provides an advanced instrument-independent sky-correction tool that removes sky emission in science spectra by means of sky spectra taken at a different time and sky location....

... The center frequency was 1397.93 Mhz. ... make a model of the resonance from the Off source data. fit this model to the on source data . ... w is the frequency . ... But we divide the onSource and off source by the same function so the the noise is not part of onSrc/Offsrc at the end. ... There are 14 pages. 1 for each on/off pair. 1st Plot: the 2 minute average band passes for onSrc (black), offSrc (red), and calOn - calOff (green). 2nd Plot: Onsrc/calDif, offSrc/calDif and the model fits to each. ...

Next: Navigation Pre-Observation Products . ... SRT (Space Radio Telescope) Schedule (SRS) File . ... What: GOCG generates the Space Radio Telescope (SRT) schedule file, or SRS file, from current GSTS file. The SRS file has more precise time stamps than long-term schedules, and also designates which GTS will be used when. ... The SRS file also serves as the antenna pointing schedule file, as it describes the planned orientation of the spacecraft (and solar panels) as a function of time. ...

... Up: Data Analysis and Processing Techniques . ... Also, a method for quality control of CCD observations is suggested. ... Everyone who observes a celestial object using a CCD detects moving celestial objects as a ``by product''. ... We hope that our investigations may be useful for near-Earth space control and also for searches of the moving celestial objects through analysis of old and new CCD frames obtained at any amateur or professional astronomical observatory. ...

Astronomy Discussion Forums . Forums: . ... Discussion Forums . ... Follow Up . Forum List | Follow Ups | Post Message | ... Login to Post . ... www.astronomy.net . About Astronomy Net | Advertise on Astronomy Net | ... Unless otherwise specified, web site content Copyright 1994-2016 John Huggins All Rights Reserved . Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

Full-Text Search . ... astro-ph . ... SAI VO . ... Atazadeh, K. group, for the Yakutsk array . Group, the CoRoT/SWG Ground-based Observations Working . Group, Next Generation Space VLBI Working . Group, Korean VLBI Network . ... Group, Pulsar Working . Group, AGILE Pulsar Working . Atanackovic-Vukmanovic, Olga . ... Group, Web Services Working . ... Group, LOFAR Pulsar Working . ... ATA GROUP . ... Group, on behalf of the ASTRO-H Science Working . ... Group, EoR Science Working . ...

... Bright Stars and Dark Clouds . ... Well don't feel bad - this even happened to the bright young stars of the open cluster NGC 6520. On the left are the cluster's bright blue stars. Beneath Venus' Clouds . ... If the thick clouds covering Venus were removed, how would the surface appear? ... Venus: Earth's Cloudy Twin . ... If Venus weren't so cloudy it would be more similar to Earth. This picture by the Galileo spacecraft shows just how cloudy Venus is. ... Comet Hale-Bopp Fades . ...

... At 22:42:27 UT 26/07/09, the Burst Alert Telescope (BAT) on board of the SWIFT multi-wavelength space observatory triggered and located GRB 090726 gamma-ray burst event. ... About half an hour after the BAT trigger, the first images were obtained with the SAO RAS Zeiss-1000 telescope in four BVRI filters (see Fig.1). ... The spectrum of the optical transient was obtained with the SAO RAS 6-m BTA telescope 1.54 hours after the burst, using the SCORPIO instrument in the spectroscopic mode (Fig.2). ...

... As piles of ash are removed, the courtyard haтАж . Sidebar Left . Sidebar Top . No Sidebar . Sidebar Bottom . Sidebar Right . ... Title: As piles of ash are removed, the courtyard has the top few cm of contaminated soil removed as well. Description: NOTE: All images and movies are copyright and must not be reproduced or mirrored in any form without written permission. ... As piles of ash are removed, the courtyard has the top few cm of contaminated soil removed as well. ...

... The essence of the solution is to generate a virtual PC on your desktop PC and install an old Linux distribution, circa 2006, in that. ... There are two major free virtual machines available for Linux, these are VirtualBox and KVM. ... Boot the virtual machine. ... Install a Linux 2.6 kernel if it isn't installed by default (you'll need to reboot the virtual machine after this step): . ... Printable View of http://www.mrao.cam.ac.uk/projects/OAS/pmwiki/pmwiki.php/MROIDelayLine/TrolleySoftware) ...

RTT150 . ... This search system is designed for generating the necessary information on series of pointings (observations of each source consist of sets of exposures with different filters and sometimes with different exposure times) for observed sources. Search results appear at the separate page as a table with the following data: . DATE - real (not evening!) observations date (in YYYY-MM-DD format); . ... Bin - minimal CCD binning mode (may vary during the observations); . ...