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http://www.apo.nmsu.edu/Site/directory/dlong/Images/Good_Seeing.html.
http://www.apo.nmsu.edu/Site/directory/dlong/Images/Good_Seeing.html.
1. APOD: 2000 February 3 - Colorful Clouds Of Carina
... 2000 February 3 . Colorful Clouds Of Carina . ... Striking and detailed, this close-up of a portion of the famous nebula is a combination of exposures through six different filters taken with the Hubble Space Telescope's Wide Field Planetary Camera 2 in April of 1999. ... Exposures made with different narrow filters, as in this case , are translated to a visible color where shorter wavelengths are assigned bluer and longer wavelengths assigned redder colors. ... About APOD | ...
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Ссылки http://www.sai.msu.su/apod/ap000203.html -- 4.9 Кб -- 01.10.2012
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2. http://www.naic.edu/~phil/hardware/cor/compareBandpass.html
The computed band passes. ... The interim correlator input is filtered by 8 analog filters (50 Mhz wide at the 260 Mhz IF... one for each sub correlator). ... For bandwidths of 25 Mhz and below the real data stream is digitally down converted to complex samples I, Q streams. ... The Top figure is the halfband filter bandpass computed from the filter coefficients. ... The computed filter has aliased power, extra IQ filtering, and two applications of the filter on the resulting real bandpass. ...
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Ссылки http://www.naic.edu/~phil/hardware/cor/compareBandpass.html -- 8.0 Кб -- 25.09.2002
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3. Input
... filter1 . filter associated with the magnitude mag1 . The filter identifier filter1 must be at a shorter wavelength as the filter defined by filter2 . ... zero point corrected magnitude derived from the deadtime corrected count rate measured in the passband filter1 . This is the brightness which is used to calculate the colour (mag1-mag2) in the instrumental system (units: magnitude) . ... This is the brightness which is transformed into the standard system (units: magnitude). branch . ...
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Ссылки http://xmm.vilspa.esa.es/calibration/documentation/CALHB/node562.html -- 4.4 Кб -- 20.09.2011
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4. February 1999--Reference File Updates
... HST . ... Data . ... HST Overview . Overview . ... Retrieving HST Data . ... Apertures . ... Data Files . ... We have updated the offsets for the full-field apertures, which results in a significant wavelength shift if those apertures were used for slitless spectroscopy. j1c1746no_apd.fits (use on or prior to December 8, 1997) . ... We have updated the entry for the F28X50OIII filter to account for the red leak, and to change the F28X50LP by 0.766 of the previous values (based on in-orbit data). ...
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Ссылки http://www.stsci.edu/hst/stis/calibration/reference_files/allfeb99.html -- 22.0 Кб -- 11.04.2016
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5. Digital Filters
... 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 . ...
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Ссылки http://www.sao.ru/precise/Midas_doc/doc/95NOV/vol2/node21.html -- 7.8 Кб -- 23.02.1996
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6. Infrared Data
Next: Spectroscopic Data Up: Calculation of Extinction Previous: Calculation of Extinction . Near--infrared observations were made on 5--6 February 1996 at CTIO using the CIRIM imager. ... In the infrared, the sky background is high relative to the dynamic range of the detector. ... As the first step in the reduction, all frames had a linearity correction applied (Elston 1994). ... In some cases, the dithering procedure caused stars to overlap with other stars on the final frame. ...
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Ссылки http://hea-www.harvard.edu/~swolk/thesis/optical/node6.html -- 5.6 Кб -- 02.10.2012
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7. Светофильтры - Celestron LPR (Light Pollution Reduction), Baader UHC-S
... Обзор LPR фильтра. Впечатления от наблюдений с LPR фильтром. ... Характеристики цветных фильтров Baader-Planetarium . Мой перевод pdf- файла о фильтрах с сайта Baader-Planetarium (379 кб) . ...
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Ссылки http://www.shvedun.ru/filters.htm -- 33.2 Кб -- 09.04.2016
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8. A New Entropy Measure Based on Multiple Resolution and Noise Modeling
... Previous: Background Fluctuation Analysis from the Multiscale Entropy . ... A new measure of information is defined which is based on noise modeling and incorporates resolution scale. Properties of this measure are discussed. ... Additionally it allows for image noise modeling, and subsequent noise removal. ... Hence information- and entropy-based processing technologies will be necessary for the effective design and implementation of large, future generation, image databases. ...
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Ссылки http://www.adass.org/adass/proceedings/adass98/murtaghfd/ -- 17.8 Кб -- 16.07.1999
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9. Optical systems and devices
To main of Laboratory . The research work and design of optical and optical-electronic devices are carries out by laboratory staff: . ... Lens: . ... In the layout 1 prism systems perform functions of dispersive element, corrector of aberrations, optical reducer. ... Spectral range 200 - 400 nm; . ... Back Forward . ... The main corrector's function are compensation of field aberrations of the main spherical mirror of a telescope (diameter of 600 mm, f'=1200 mm) and increase aperture ratio. ...
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Ссылки http://www.mao.kiev.ua/lao/optical_systems_eng.html -- 19.6 Кб -- 12.01.2010
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10. http://www.arcetri.astro.it/~palla/ANDREAIMMAGINI/ISM/Carina.txt
... STScI-PRC00-06 LIGHT AND SHADOW IN THE CARINA NEBULA Previously unseen details of a mysterious, complex structure within the Carina Nebula (NGC 3372) are revealed by this image of the "Keyhole Nebula," obtained with NASA's Hubble Space Telescope. ... This region, about 8000 light-years from Earth, is located adjacent to the famous explosive variable star Eta Carinae, which lies just outside the field of view toward the upper right. ...
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Ссылки http://www.arcetri.astro.it/~palla/ANDREAIMMAGINI/ISM/Carina.txt -- 4.8 Кб -- 30.01.2001
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11. Images of SCR 1845-6357 A and B in different filters (NACO-SDI/VLT)
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Ссылки http://www.eso.org/public/images/eso0611d/zoomable/ -- 1.9 Кб -- 12.04.2016
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12. Day Star Filters, AstroGuide Listing
The AstroGuide . ... AstroGuide | ... AstroGuide Listing . ... See many more Astronomy Listings by: Category or Alphabet . ... Day Star Filters, LLC . Filters for use with solar observing. ... Listed Since February 16, 1999 . ... 909) 591-4673 . ... 909) 591-6886 . Web Site . ... Web . ... Unless otherwise specified, web site content Copyright 1994-2016 John Huggins All Rights Reserved . dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . are trademarks of John Huggins ...
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Ссылки http://www.astronomy.net/astroguide/ag147.html -- 12.4 Кб -- 09.04.2016
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13. http://www.apo.nmsu.edu/arc35m/Instruments/ARCTIC/Development/techocon020515.pdf
Thursday, February 5, 2015 Tech o con discussion Attending: Alaina, Mark, Russet, Joe, Suzanne, Nick, Conor, Bill, Alysha - Vendor Update -- Joe · STA -- Chip at ITL for thinning and coating. ... Filters -- Quotes received from Astrodon. ... Lead time is 8-10 weeks so we should get those ordered soon. ... All filters edge-blackened. CVE -- They have machined all the small parts of the shutter but the CNC is down so the main housing is on hold till they get it working, maybe by Monday. ...
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Ссылки http://www.apo.nmsu.edu/arc35m/Instruments/ARCTIC/Development/techocon020515.pdf -- 35.4 Кб -- 30.06.2015
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14. XWare > APOD
... 6.06.2001 . ... Orbiting the Sun between Mars and Earth, asteroid 433 Eros was visited by the robot spacecraft NEAR-Shoemaker in 2000 February. ... The T Tauri Star Forming System . ... Last March, telescopic instruments in Earth and space tracked a tremendous explosion that occurred across the universe. ... From September 2000 through March 2001, astronomer Tunc Tezel patiently photographed the planet Venus on 25 different dates as it wandered through the evening twilight. ... Working in Space . ...
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Ссылки http://www.astronet.ru/db/xware/apod.html?page=210&d=2007-02 -- 15.4 Кб -- 13.04.2016
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15. Meade Series 4000 Broadband Nebular Filters
... Meade Series 4000 Nebular Filters incorporate the very latest in interference coatings technology. ... Technical Basis of the Meade Broadband Nebular Filter: As shown in the transmission graph below, the Meade Broadband Nebular Filter strongly rejects the light of sodium- and mercury-vapor lights as well as natural airglow and auroral emissions. ... Meade Series 4000 Narrowband Nebular Filters . ... Meade Series 4000 Oxygen-III Nebular Filters . ... Meade Series 4000 Photo-Visual Color Filters . ...
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Ссылки http://www.meade.com/catalog/meade_4000/meade_series_4000_nebular_filters.htm -- 29.2 Кб -- 06.10.2007
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16. Atmospheric influence on the different radioengineering systems functioning.
Atmospheric influence on the different radio-engineering system functioning . ESTIMATION OF ATMOSPHERIC OPTICAL CHARACTERISTICS AND REMOTELY SANSED IMAGE CORRECTION . ... Direct transmittance estimation results for 12 channels of the spectrometer CHRIS. ... We have managed to develop a direct method of estimating the discrete Normalized Atmospheric Point Spread Function (NAPSF) from available images alone, not using any external sources of information about the atmosphere. ... IRE RAS 1996-20 11 ...
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Ссылки http://www.cplire.ru/html/atm/correction.html -- 19.8 Кб -- 18.10.2011
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17. VISTA ETC - Exposure Time Calculator
... Exposure Time Calculator (ETC) . ... ESO - Public Surveys . ... the recommended values to use for DIT, . ... Detector on-chip integration (DIT): seconds. to your chosen value - a separate page gives recommended values to use for DIT - for modes 1 and 2 below you may wish to start with the maximum recommended values as these will minimize the effect of read noise (a total object exposure of Y secs with DIT=X secs will produce Y/X lots of read noise) and give you a lower limit on the time needed. ...
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Ссылки http://www.vista.ac.uk/observing/etc/index.html -- 15.1 Кб -- 28.03.2013
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18. Work Scan Program + Data Viewer (IDL widget)
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' / . ...
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Ссылки http://mavr.sao.ru/hq/sun/software.htm -- 8.5 Кб -- 24.02.2010
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[ Сохраненная копия ] Ссылки http://www.sao.ru/hq/sun/software.htm -- 8.5 Кб -- 24.02.2010
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19. ij.plugin.filter Class Hierarchy (ImageJ API)
... Class . ... Package Hierarchies: . ... ij.plugin.filter. Analyzer (implements ij.measure. ... PlugInFilter ) . ... AVI_Writer (implements ij.plugin.filter. ... BackgroundSubtracter (implements ij.gui. DialogListener , ij.plugin.filter. ExtendedPlugInFilter ) . ... Benchmark (implements ij.plugin.filter. ... Binary (implements ij.gui. ... CalibrationBar (implements ij.plugin.filter. ... Convolver (implements java.awt.event.ActionListener, ij.gui. ... Duplicater (implements ij.plugin.filter. ...
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Ссылки http://www.astro.louisville.edu/software/astroimagej/imagej/api/ij/plugin/filter/package-tree.html -- 19.0 Кб -- 02.12.2010
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20. http://www.atnf.csiro.au/management/atuc/2011oct/science_meeting/docs/trott_FT_v3.pdf
... TBB: retain a few seconds of raw data Off-line follow-up Coherent dedisperse The Matched Filter Optimal detector for a known signal in known Gaussian noise Matches expected signal shape (template, h) to data (s), and sums Pros: optimal for a given Gaussian dataset Cons: requires full signal knowledge , not blind to signal shape Performance : signal -to-noise ratios Template matched to ...
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Ссылки http://www.atnf.csiro.au/management/atuc/2011oct/science_meeting/docs/trott_FT_v3.pdf -- 1451.8 Кб -- 23.10.2011
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