... 2005 June 6 . Saturn: Dirty Rings and a Clean Moon . Credit: Cassini Imaging Team , SSI , JPL , ESA , NASA . Explanation: Eating surface ice from Enceladus might be healthier than eating ice from Saturn's rings -- it certainly appears cleaner. From their apparent densities and reflectance properties, both the rings of Saturn and its shiniest moon, Enceladus , are thought to be composed predominantly of water ice . ... About APOD | ... NASA Official: Jay Norris. ...

AstroDrizzle: Aligning Images From Multiple Instruments Roberto J. Avila, W.J. Hack, AstroDrizzle team Space Telescope Science Institute Cookbook 1. ... Use TweakReg to align CR cleaned images to reference frame and create headerlet containing updated WCS solution 4. ... We present an example where we use the TweakReg task to align images from multiple HST instruments: WFPC2, ACS/WFC, WFC3/ UVIS, WFC3/IR. ... Combined drizzled images from different pointings or filters can be aligned with each other. ...

... DDR2 . ...

... Data may be optionally rescaled. copyheader copy header keywords from one FITS file to another ( see also FTOOL cphead ). copywcs copy just the World Coordinate System keywords from the header of one FITS image to others. fcolappend append a constant column to a FITS table fitsparsename Prints components of the extended FITS file name. fitspha convert ASCII files to FITS PHA ( See also listhead supplied with FITSIO. modifyheader modifies FITS header. ...

... User Guide ] Task: clean Purpose: Apply Hogbom, Clark or Steer CLEAN algorithm to a map Categories: deconvolution CLEAN is a MIRIAD task that performs a hybrid Hogbom/Clark/Steer Clean algorithm, which takes a dirty map and beam, and produces an output map which consists of the Clean components. This output can be input to SELFCAL to self-calibrate visibilities, or input to RESTOR to produce a "clean" image. ... Key: map The input dirty map, which should have units of Jy/beam. No default. ...

2009-05-20 O.Hainaut There are many steps between the data coming out of a camera on a professional telescope and the final image that appears in magazines or on our web sites. ... preliminary: from the telescope to Photoshop. cleaning: remove the artifacts remaining in the image . ... In each filter, several images are acquired. ... Fig 1: a raw image (click for full scale) . ... At this stage, the images are still in FITS, the astronomical format, with one FITS file per filter. ... The final image. ...

... This section describes three functions which have been created to cleanup defects in images. The first two functions for cleaning rows and columns are particularly useful for CCD--images. ... These can often be removed with the commands: MODIFY/COLUMN INPUT OUTPUT [C or V] [columns] . ... This is particularly useful for removing the permanent defects which may exist in the CCD--frames and which cannot be removed by the MODIFY/COLUMN or MODIFY/ROW commands. ...

... Previous: ESO C Library for an Image Processing Software Environment (eclipse) . ... A new CLEAN-type algorithm searches for model components not in the dirty image but in the multi-resolution wavelet transform of the dirty image based on the dirty beam. ... The improvement of this prototype Wavelet CLEAN, which does convolve with the dirty beam, can be attributed to a suppression of noise and aliasing in the dirty image by use of information in the sidelobes of the whole image domain. ...

MAKE ME AN ISLAND Different eyes, different size, different girls every day. Different names, different games took my breath clean away. But I'm changed, rearranged, I'm enlightened and how you have caught me, you have taught me and I'm different now. Take me and break me and close all your windows and doors. Shut me off, cut me off, make me an island, I'm yours. Take me away from the world, take me away from the girls. Take me and break me and make me an island, I'm yours. ...

In 2005 we have made some attempts at cleaning up the rfi in the 327 Mhz receiver band. ... sept05)It produces combs at: . ... It is center centered on the 40Mhz comb (at 320 Mhz in the 327 band). ... A 1 Mhz comb. ... See: 1 Mhz comb in 327 receiver (coming from AC units in dome) . ... Azimuth dependence of birdies in the 327 receiver ( more info ). ... The 327 Az swings showed that the 327 Mhz birdies have an azimuth dependence (which means they are coming from outside the dome). home_~phil ...

... Clean . ... Flux Sign Expo . ... Flux, mCrab . ... 1.07 PHA . ... The map above is movable . ... Original shows mosaics with all data available. Flux map Error map Significance Exposure . Flux and error maps are in mCrab units. All maps are convolved with instrumental point spread function (PSF) which is Gaussian ( =5'). ... INTEGRAL/IBIS 9-year Galactic Hard X-Ray Survey* , A , Volume 545, id.A27 { NASA ADS | ... 7-year Galactic Bulge map , 2009 . 9-year Galactic survey , 2012 . ...

There is an obligation of team leaders to translate these rules and regulations to native language of participants in advance. Starting since 2004 this translation has to be done in written form as an obligatory part of application to the International Astronomy Olympiad.) ... Don't write the conditions of problem in rough copy or clean copy. ... All additional information for participants to be done in both official languages of the Olympiad: in Russian and in English. ... Rough copy. ...

Next: The Scenario Machine: Operational Up: Evolution of Magnetic Rotators Previous: Ejector-propeller hysteresis . ... The length of this segment is determined by the eccentricity. ... In this case no hysteresis occurs and transitions E -- P and the reverse take place in symmetrical points of the orbit. ... Here EP means a mixed state of the rotator at which it is in the ejector state during one part of the orbit, and in the propeller state during the rest of the orbital cycle. ...

... Saturn: Dirty Rings and a Clean Moon . ... Credit: Cassini Imaging Team , SSI , JPL , ESA , NASA Explanation: Eating surface ice from Enceladus might be healthier than eating ice from Saturn's rings -- it certainly appears cleaner. ... For reasons that are not yet understood, however, many of Saturn's ring particles have become partly coated with some sort of relatively dark dust, while the surface of Enceladus appears comparatively bright and clean. ... Saturn s Ancient Rings . Ring Scan . ...

... Gallery . ... Sidebar Left . Sidebar Top . No Sidebar . Sidebar Bottom . Sidebar Right . ... Title: Most rooms clean, courtyard looking bare. Description: NOTE: All images and movies are copyright and must not be reproduced or mirrored in any form without written permission. ... NOTE: All images and movies are copyright and must not be reproduced or mirrored in any form without written permission. Powered by Gallery 3.0.9 (Chartres) . ...

... For the Corner Method, Clean_lc was originally a FORTRAN 77 program developed by Steve Snowden and Kip Kuntz in 2005-6. ... Clean_lc's purpose is to clean a light curve by creating a histogram of rate values from the light curve, finding the most likely value assuming that to be similar to the mean of the quiescent rate, then fitting a Gaussian to a small window around that value in the histogram to determine the true mean and dispersion of the quiescent background rate. ...

For the calibration of RATAN-600 data you will need to Download Nobeyama Fluxes (1, 2, 3.75, 9.4, 17 GHz): year 1999 2000 2001 2002 2003 . Brief description of Work Scan . Main functions of processing, realized in the program are: . ... Correction of various (not fatal) defects of data; . ... Calculating of the lower enveloping curve or an average scan from observations data for a few days; . ... COMMENT This table contains the set (TFIELDS) of 1-dimensional (TFORM# . ... AZIMUTH = 'float' / . ...

... Bad Astronomy . Misconceptions . ... But what if they make Bad Astronomy there? ... But they aren't; what looks like a flat painting of stars on a canvas is actually a three-dimensional tapestry of stars at varying distances, the least of which is still tremendously far away. ... Look at the constellation of Orion, shown on the left as seen from the Earth. ... You cannot simply travel a thousand light years to the "opposite side" of Orion, look back, and see it backwards (as shown on the right)! ...

... Apache HTTP Server Version 2.2 . Apache > HTTP Server > Documentation > Version 2.2 > Programs . ... htcacheclean is used to keep the size of mod_disk_cache 's storage within a certain limit. This tool can run either manually or in daemon mode. ... You can stop the daemon cleanly by sending it a TERM or INT signal. ... Options . ... This assumes that the Apache web server is not running (otherwise you may get garbage in the cache). ... Specify limit as the total disk cache size limit. ...

E nceladus ("en SEL a dus") is the eighth of Saturn 's known satellites: orbit : 238,020 km from Saturn diameter : 498 km mass : 7.30e19 kg I n Greek mythology Enceladus was a Titan who was defeated in battle and buried under Mount Etna by Athena. ... Its surface is dominated by fresh, clean ice. ... T his means that Enceladus must have been active until very recently (and perhaps is still active today). ... This may provide a heating mechanism but it is probably insufficient to melt water ice. ...