... 22apr13: check lbw filterbank . ... They were using the 1230-1470 filter with the 1370 hipass filter. On 10apr13 we did a cable test on the 1370 hipass cable going into,out of the filter bank. ... The calRatio will show variations in Tsys caused by Ttm. ... Filter 9 (1280 hipass) shows Tsys variation (.ps) ( .pdf ): The top figure shows the fractional change in Tsys for polA (black) and polB (red) for the 10 cal off measurements that were made the first time the 1280 hipass filter was measured. ...

... Astronomers have developed their ways of processing signals almost independent to but sometimes collaboratively with engineers, although the fundamental of signal processing is same: extracting information. ... 2007 Vol 24 Issue 4: Bootstrap methods in signal processing . ... Bootstrap for Empirical Multifractal Analysis (H. Wendt, P. Abry & S. Jaffard) explains block bootstrap methods for dependent data, bootstrap confidence limits, bootstrap hypothesis testing in addition to multifractal analysis....

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 / ...

Next: Problems of Fourier Up: Some Problems of Practical Previous: To Restore or . Photometry of restored images has two problems. First, many restorations are photometrically unfaithful, and you get the wrong answer. ... And of course there are situations where it is absolutely necessary to restore the image. ... We ran the lucy task that is in STSDAS, for the usual 80 iterations, and it gave the wrong answer; the ratio of the heights of the two peaks was wrong by about 10 or 20%. ...

... The first step to improve the FORS calibration is therefore to obtain data to allow a computation of the illumination correction across the field. ... Another limitation on the calibration accuracy has been the brightness of the Landolt standards which have forced the use of extremely short exposures introducing small but non-negligible shutter-time errors and also resulting in a very small number of useful standards per frame. ...

adapted from Observe: Eclipses, published in 1979 by the Astronomical League and "Safe Solar Filters," by B. Ralph Chou, Sky and Telescope, August 1981) . ... Tape TWO pieces of film together into a sandwich, and tape this over the opening in the cardboard. ... The cardboard frame will act as a shade from the bright Sun, while you safely observe through the film sandwich. ... Undeveloped film is not safe. ... tape . ... At the end of one of the tubes, tape the aluminum foil, and make a tiny pinhole. ...

... CentralProcessor 0.11 documentation . ... This allows flexible logging to stdout, file, or other sinks. Here is an example of a typical log output: . ... Log level . ... DOCTYPE log4j: configuration SYSTEM log4j.dtd log4j: configuration xmlns:log4j= http://jakarta.apache.org/log4j/ appender name = console class= org.apache.log4j.ConsoleAppender param name = Target value = System.out / layout class= org.apache.log4j.PatternLayout param name = ConversionPattern ...

... omichain (omichain-1.51) [xmmsas_20080701_1801-8.0.0] . ... The omichain then cycles through each filter in the filter list and processes each exposure in the exposure list for that filter. ... If a USNO catalogue fits file is available, and the parameter usecat is set to true then it will also correct the astrometry for any offset between the OM and USNO RA and dec axes, adding the columns RA_CORR and DEC_CORR to the source-list. ...

... Figure: A dark current CCD exposure with cosmic ray events which are removed with non--linear filters. ... Figure shows a CCD dark current exposure with cosmic ray events. ... Figure: Removal of cosmic ray events on a CCD spectral exposure with different techniques: (A) original, (B) median filter, (C) recursive filter and (D) stack comparison. ... For comparison with non--linear filter techniques, Figure D shows removal of cosmic ray events from the spectral frame discussed above. ...

... This appendix tells you how you can use JavaScript to filter your incoming mail and news when you use Netscape Messenger. ... Write a JavaScript function to serve as a filter and put it in your filters file. This function takes one argument, a message object, and can make changes to that message. ... News Filters . ... This file contains the JavaScript functions that perform the mail filtering. ... For news filters it is a News Message object and for mail filters it is a Mail Message object. ...

... R.A. = 00h55m04s.86, Decl. = -37 41'43".7 . ... Variable star in NGC 1511 . ... Variable star near Pegasus 2001bn IAUC 8624 BV anon 2001bh 7622 K star ugc11635 2001dh 7482 M star ic5374 1999db 7227 QSO anon 1999dc 7227 AGN anon 1999cx 7210 AGN anon 1999cu 7210 AGN anon 1999bs 7141 cat var ugc11093 1998di 6982 dwarf nova anon 1993U 5818 QSO anon 1993V 5818 QSO anon 1992W 5517 M star mcg 8-23-96 1992X 5517 M star mcg 6-32-24 1991ap 5327 QSO anon 1989Z 5162 var ngc4013 1985J 4059 CV ugc6274 ? ...

... Next: Star Finding and Up: Image Restoration and Previous: Multiresolution and Astronomical . ... Design improvements continue to be made in the filter developed using mathematical morphology principles for the Infrared Astronomical Satellite ( IRAS ) images. The purpose of this filter is to eliminate Galactic cirrus emission from extragalactic fields. ... With an appropriate normalization, the filter curve was applied to each pixel in the image to remove the Galactic cirrus. ...

... CURRENT ASPECTS OF REMOTE SENSING OF EARTH FROM SPACE . ... For developing of the scientific concept and the programs of global monitoring of the Earth from space and pursuant to the disposal of Presidium of Russian Academy of Sciences # 10310-717 (August 11, 2004 ) Space Research Institute RAS and Center of Space Observations of the Russian Space Agency during November 16-18, 2004 conduct the Second Opened All-Russia conference ' Current Aspects of Remote ...

... Research areas . ... Events The Second All-Russian Research and Practical Conference 'Actual problems in Avionics Research: Theory, Service, Developments' . ... The Second All-Russian Research and Practical Conference 'Actual problems in Avionics Research: Theory, Service, Developments' "(AVIATOR) will take place at the Faculty of Aviation Equipment of the Military Educational and Scientific Centre of Air Force 'Air Force Academy named after Professor N. E. Zhukovskiy and Yu. ...

Here is a description of the Filter/Driver Pack Plus release from Aldus. ... The Macintosh Filter/Driver Pack Plus includes several new and updated filters, including import filters for Microsoft Works 3.0 and MacWrite Pro files, as well as the most recent LaserWriter driver, version 8.1.1. ... The Filter/Driver Pack Plus also includes a patcher utility which will update PageMaker 5.0 to version 5.0a. This patcher corrects a handful of reported customer problems. ...

Russian SHAREABLE DATA CENTER Institute of Solar-Terrestial Physics SB RAS . ... To improve the quality of ionograms and to carry out on automatic ionogram processing we have developed a special software, which can be arbitraly devided into the following main parts: . ... Ionogram processing software on the basis of image processing; . Interactive ionogram processing software. ... Here we present ionogram samples for different kinds of chirp sounding . ... Capabilities and samples | ...

... At 13:30 pm March 2 stars were acquired with the WUPPE detector and the focussing process had begun . ... The galaxy below, UGC 6151, is in the center of the field. ... In addition, the active galaxies NGC 4151 and NGC 1068 were done. ... Later in the day HUT made observations of Jupiter, the interacting galaxy pair NGC 6090 and the UV bright galaxy- Markarian 3. ... HUT acquired additional spectra of NGC 4151, a new spectra of NGC 4631, more data on the Cygnus Loop and a new spectra of MKN 421. ...

... Meade Instruments Corporation . ... Meade Pictor 616A Color Filter System Instruction Manual . ... Remove the Meade Pictor 616A Color Filter System from the telescope or camera. Use the supplied hex wrench to remove the three screws from the telescope side of the Meade Pictor 616A Color Filter System. Position your Meade Pictor 616A Color Filter System to align with the diagram below. ... Carefully screw each filter into the wheel, and re-assemble the Meade Pictor 616A Color Filter System. ...

... Institutes of Chernogolovka . The largest of all the scientific institutions of the center is the Institute of Chemical Physics in Chernogolovka , where fundamental problems of chemical physics are studied: kinetics and mechanisms of chemical and biological processes; processes of combustion, explosion, and polymerization; and mechanisms of elementary reactions involving high energy particles. ... Developments and Technologies . ...

Celestron Forum Message . Forums: . ... Nexstar11GPS Handcontroller Problem . ... I've got a major issue with my scope. I owne it since 2002 and had inital problems (I had to send the scope back due to a clutch problem). ... It would not get correct GPS data. ... www.astronomy.net . About Astronomy Net | Advertise on Astronomy Net | ... Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...