... Select the letters . ... Duplicate the black channel into a new document and apply the emboss filter (Angle=90°, height=1 pixel, Amount= 330%), then apply a 1-pixel gaussian blur. ... Apply the emboss filter (Angle=0°, height=1 pixel, Amount=130%) and then apply the Solarize filter. ... Apply the emboss filter (Angle=-45°, Height=1 pixel, Amount=80%) . ... Apply the emboss filter (Angle=-45°, height=1 pixel, amount=300%), then the Unsharp Mask Filter (Amount=100%, Radius=5 pixels, Threshold=0) . ...

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• GIMP: Tips and Tricks for Creating Images
• Hands On; Lighting Effects1
• Hands On; The Button Mask

Log windows display messages from all "actors" (instruments, the TCC, the hub...) and allow you to send commands. Controls along the top allow you to filter out unwanted garbage or highlight messages of particular interest. ... Regular Expressions . ... The entry field for "+ Actors" and "+ Commands" filtering accept space-separated regular expressions . ... If you plan to send many messages to a particular actor, you may select the actor from the menu next to the command entry field. ...

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• Apache Point Obs. filters

... arfgen (arfgen-1.70.4) [xmmsas_20060628_1801-7.0.0] . ... arfgen simply constructs the appropriate quantities from the CAL, in the form of vectors of discrete energy-dependent elements, and combines these data multiplicatively to form the ancilliary response. ... The user can enable or disable the effective area, filter transmission, QE or grating attenuation by setting the relevant parameter (eg modeleffarea ) to true or false respectively. ...

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• Description

... 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 . ...

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... Change to Pulse Height Filtering to Mitigate Effects of Gain Sag in the COS FUV Detector . ... Changing Programs & Resolving Problems . ... Detectors . ... The COS FUV detectors convert each ultraviolet photon into a shower of electrons, for which the detector electronics calculate the X and Y coordinates and the total charge, or pulse height. Prolonged exposure to light causes the FUV detectors to become less efficient at this photon-to- electron conversion, a phenomenon called "gain sag." ...

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• WFC3 Instrument Handbook
• NIRCam filters
• Color Transformations of Primary Filters

... 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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• Baader NEODYMIUM (Moon & Skyglow) filter

... 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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• Meade Series 4000 Photo-Visual Color Filters
• Meade Instruments Corporation - Pictor 616A Color Filter System
• Blocking Filters - Coronado€о Solar - Products

... 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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• FILTER/WAVE
• Artifacts
• Filters - Apache HTTP Server

... 1) Dipartimento di Astronomia e Scienza dello Spazio, Universit di Firenze, Largo E. Fermi, 5, I-50125 Firenze, Italy . 2) Osservatorio Astrofisico di Arcetri, Largo Enrico Fermi 5, I-50125 Firenze, Italy . 3) Istituto Istituto Nazionale di Ottica, Largo E. Fermi, 5, I-50125 Firenze, Italy . We present a characterization of two narrow band filters commonly used in Infrared Astronomy. ...

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• Arcetri designs innovative superconductor microwave filters for the Sardinia
• Filters - Apache HTTP Server
• The ALMA project

... The file lpf_coefficients.txt , which is created automatically as part of the filter generator's output, contains the actual values of the low-pass filter coefficients. ... The file contains a few comments about the filter in lines beginning with a "#". ... In the hardware, the gain of the filter is scaled by the "gain" comment at the beginning of the file (about 1.05) to accommodate for the window function and the truncated sin(x)/x to give a mean gain of 1.0 for the filter. ...

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• Technical Data for the Arecibo Airglow and Optical Instrumentation
• Chapter 11. Specifying OpenGL Environment Variable Settings
• lowpass digital fitlers

... example, note below the dramatic speedup in searching a 1 Gb file using an AND filter, even when one of the columns (pha) has no index : time fundisp \ huge.fits'[idx_activate=0,idx_debug=1,pha= 2348 4000 4000 1]' \ x y pha x y pha ---------- ----------- ---------- 3999.48 4000.47 2348 3999.48 4000.47 2348 3999.48 4000.47 2348 3999.48 4000.47 2348 3999.48 4000.47 2348 ... Currently, indexed filtering only works with FITS binary tables and raw event files. ...

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• Filtering ROSAT HRI data on the basis of background level
• The AstroStat Slog Blog Archive [MADS] Adaptive filter
• The AstroStat Slog filter

... 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 ...