... This noise can be reduced by replacing the pixels with an average of the surrounding values using a linear filter. ... The effects of applying linear filters to a CCD frame is shown in Figure . Figure: Different digital filters applied on a CCD image: (A) original, (B) block filter, (C) smooth filter, and (D) Laplacian filter. ... To remove stellar images from a picture of comet Halley, the results of applying different non--linear filters to the frame are given in Figure . ...

... Apache HTTP Server Version 2.2 . ... This document describes the use of filters in Apache. ... The Filter Chain is available in Apache 2.0 and higher, and enables applications to process incoming and outgoing data in a highly flexible and configurable manner, regardless of where the data comes from. ... A wider range of applications are implemented by third-party filter modules available from modules.apache.org and elsewhere. ... There are two ways to use filtering: Simple and Dynamic. ...

... Near Infrared Camera and Multi-Object Spectrometer Instrument Handbook for Cycle 17 > Chapter 4: Imaging > 4.1 Filters and Optical Elements . 4.1 Filters and Optical Elements . ... 4.1.2 Out-of-Band Leaks in NICMOS Filters . ... Each camera has 20 filter positions on a single filter wheel: 19 filters and one blank. As a result, not all filters are available in all cameras. ... A trailing letter identifies the filter width, with ? ... Table 4.1: NIC 1 Filters. ... S III] continuum . ...

... It contains 2 (1 for each polarization) by 4 separate filters that are switch able via the computer. filter 1 is a motor driven tuneable filter covering 1000 to 2000 Mhz with a 2% bandwidth. filter 2 is a ??? . ... An hp34907 dac generates a voltage that corresponds to the requested frequency. ... It steps the filter from 1000 to 2000 Mhz in 25 Mhz steps. ... You now have 41 requested voltages and measured frequencies going from 1000 to 2000 Mhz. ... 20 Mhz) when fit over the 1000 to 2000 Mhz range....

... IC 1396 . IC 1396, better know as the Elephant's Trunk. ... LGB (no red)and H filters as follows: . L - 25 images, G and B - 15 images each, all with a subframe of 180 seconds. Halpha (Used Halpha in place of Red filter) - 20 images of subframe 360 seconds. Processed/stacked with CCDStack. Combined and stacked with PS CS5. ... Copyright (c) Amateur Telescope Makers of Boston, Inc. ...

... Archives . ... With the LHC coming on line anon, it is appropriate to highlight the Banff Challenge , which was designed as a way to figure out how to place bounds on the mass of the Higgs boson. ... S is the parameter of interest (in this case, the mass of the Higgs boson, but could be the intensity of a source), ? ... It may look like an easy problem, but it isn?t! . Tags: Banff Challenge , EotW , Equation , Equation of the Week , Higgs Boson , LHC . ... Comment ( RSS ) | ... Chandra Blog . ...

Next: Cross References between CCF Up: Applications of CCF Previous: Applications of CCF Contents . Table 2: Cross reference of mirror CCF components to In-Flight Calibration Plan. Target Name . ... PSF . ... FilTransX, QuantumEf, XAreaEf . ... Table 3: Cross reference of EPIC CCF components to In-Flight Calibration Plan. ... Table 4: Cross reference of EPIC Inflight Calibration Targets to CCF components . ... Table 7: Cross reference of In-Flight Calibration Targets to OM CCF components . ...

... Tonight's Sky . ... Observing . ... Gravitational wave search provides insights into galaxy evolution and mergers . ... solar system . galaxies . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Astronomy for Kids . ... Imaging Basics . ... Observing Basics . ... Observing Basics: Visual Solar Filters . ... Expand your observing at Astronomy.com . ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ...

... replaced by Duplicator class . ... Short images are always unsigned. ij.plugin.ImageCalculator.calculate(String, ImagePlus, ImagePlus) . replaced by run(String,ImagePlus,ImagePlus) . ... ij.gui.NewImage.createUnsignedShortImage(String, int, int, int, int) . ... replaced by ImagePlus.setOverlay(Roi, Color, int, Color) . ... replaced by the Plot class. ij.gui.PlotWindow(String, String, String, float[], float[]) . replaced by the Plot class. ij.gui.PolygonRoi(int[], int[], int, ImagePlus, int) . ...

... Some commands are not yet documented. bin . ... expose . ... number . ... If basename is not specified, the filenames are determined by the ICC's path , name , places , and number If neither red nor blue is specified, both images will be saved. ... Returns: basename , name , number path , places . ... For example, with path= /export/images/DD01 , name= bias. , places= 3 , and number= 11 , the blue image file would be /export/images/DD01/bias.011b.fits . ... name , number , places , path , basename ,...

Astronotes Armagh Planetarium's Stellar Blog! ... Universe . ... Space Flight . ... Posted on November 14, 2011 | 1 Comment Here is possibly the only joke in all of astronomy. ... Continue Reading.. Posted on October 20, 2011 | 1 Comment Our galaxy, the Milky Way, is just one of an enormous number of galaxies spread throughout a vast Universe, which is expanding.Everyone knows these facts now, but how do we [ ] . ... Posted on September 29, 2011 | ... Posted on June 2, 2011 | ...

. To run a foreground process as a background job: . 1. Suspend the foreground process. 2. Enter the bg (background) command to move the process into the background. For example: lpr -Pps23 part[1-8].ps ^Z Stopped bg [1] lpr -Pps23 interface.ps jobs [1] Running lpr -Pps7 interface.ps . This starts a foreground process to print several files. The process is then stopped and the job moved into the background. The state of this job is then checked.

... In one situation, we can use light from quasars to probe the material between us and them because that light may pass through one or more galaxies or gas clouds on its way to us. The gas inside the galaxies or the intergalactic clouds acts then as a filter, absorbing selected wavelengths from the quasar light. ... Light from a quasar must pass through clouds of gas and even faint galaxies -- each leaving its imprint on the light -- before we receive it here on Earth. ... Gravitational lensing . ...

SAI, graduates year 1982. ... Note: when just a 7-digit phone number is shown, it refers to a phone located in Moscow (international access 007-495). "+" in front of a number means that you must dial an international access code first (or just press "+" on your mobile phone keypad). ... 939-1672(work); . ... Ataev Sasha . 1-(703)-536-8881(home) (USA); . ... Bychkov Sergey . ... 1-(410)-740-8205(home), +1-(301)-286-2150(work) (USA); . ... 1-(412)-767-0332(home), +1-(412)-608-9339(mobile) (USA); . ...

... Telescope . ... Filter wheel . 8 places for 50x50mm size, 5mm thick filters . Filter sets . ... If 2Kx2K CCD-camera Andor DW-436 is used, the field of view is 8'x8'. There is also a possibility to use fast 1Kx1K electron multiplying CCD-camera Andor iXon DU-888. In this case the FOV is 4'x4', and frame rate can be set to up to few hundreds Hz, when small part of CCD is used. ( more details .. High Energy Astrophysics Department 2016 IKI RAN ...

... Y]/N ** ABSOLUTE= Cutoff as absolute value? ... 0.0] There are two modes for the cutoff. ... image value - local median) / median | ... Notes: Example: USER mfilter MFILTER Version 1.0 (May 13 1993) USER MFILTER INSET=HVC1 Set HVC1 has 2 axes RA from - 207 to 207 DEC from - 236 to 236 USER MFILTER BOX = BOX range for set HVC1 : RA from - 207 to 207 DEC from - 236 to 236 USER MFILTER OUTSET=hvcmed Set hvcmed has 2 axes RA from - 207 to 207 DEC from - 236 to ...

... I have compiled a list of throughput filter curves from a variety of telescopes, instruments, and surveys. Click on the name of the filter to download it. The first line of each filter is the zeropoint for that filter. If the filter is in the AB system, it is listed as 0.0 (or in otherwords -48.55). ... Filter . Effective Wavelength . ... A_V . ... 0.987 . ... 0.050 . ...

... Comments, Opinions Publications Dnepr Program . Dnepr launch record 17 August 2011. Cluster Launch of Dnepr LV 22 August 2013 KOMPSAT-5 Launch 21 November 2013. ... The Sych-2 satellite is being developed as a part of the space optical-range Earth observation system by the State Design Office of Yuzhnoye and built by the Industrial Association Yuzhny Machine Building Plant in cooperation w ith other space industry entities upon the state order of the National Space Agency of Ukraine . ...

... Armagh Observatory . New Targeting Social Need (New TSN) Action Plan 2002 . The Vision of the Armagh Observatory is: . To maintain and build on its position as a thriving astronomical research institute, and to continue to expand our understanding of the Universe and of humanity's place in it." ... How We Contribute to New TSN . ...

... Series 4000 filters thread into the barrels of virtually all 1.25" eyepiece brands. Meade Series 4000 filters are a large 26mm in clear aperture and are manufactured from the purest crown optical glass, dyed-in-the-mass ( not "color coated"); there are no finer filters available for telescopic applications. ... For visual applications Series 4000 filters thread into the barrels of all Meade 1.25" eyepieces, and into the barrels of virtually all other 1.25" eyepiece brands as well. ... Meade 4M | ...