... 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 ...