... 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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... Colorful Clouds Of Carina . ... Credit: Hubble Heritage Team ( AURA / STScI / NASA ) Explanation: Tumultuous clouds of the Carina Nebula , 8000 light-years away, glow in planet Earth's southern sky . 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. ... NASA Official: Jay Norris. ... Colorful Clouds Near Rho Ophiuchi . ...

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• Астронет > Colorful Clouds Of Carina
• Journal "Peremennye Zvezdy"

Making HST Pictures: Examples and Illustrations . ... These illustrations represent some of the steps and techniques used to produce “pretty pictures” from HST images. ... TIFFs (ftp) . ... Separate images are exposed through different color filters. ... An alternate way to make color images . ... Eight bit (one byte) images contain 256 different values that may be represented by 256 shades of gray or 256 arbitrary colors from a color map (or palette) of all possible colors. ...

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... 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 . ...

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• ASP: Black Holes to Blackboards: Seeing the Light
• ASP: Making a Rainbow
• Astronomical Society

. The image is a composite of separate exposures made by the WFC3 instrument on the Hubble Space Telescope. Three filters were used to sample broad wavelength ranges in the near infrared. The color results from assigning different hues (colors) to each monochromatic image. In this case, the assigned colors are: F105W (Y) blue; F125W (J) green; F160W (H) red. NASA/ESA/G. Illingworth/R. Bouwens/ HUDF09 Team

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• http://www.astronomy.com/sitefiles/resources/image.aspx?item=%7BBC448C87-91C7-49F7-9E5F-73EDE0187D95%7D

Astronomers usually measure the flux of an object by collecting light with a telescope, sending it through a known filter, and then determining the power. ... But astronomers usually give their photometric results in terms of magnitudes. ... Astronomers define an absolute magnitude that is independent of the distance of a star and only depends on the intrinsic properties of the object: the absolute magnitude is the magnitude the star would have if it were 10 parsecs away from the Earth. ...

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• Artifacts

... As an experiment, I made some three-color images of Messier 42, more commonly known as the Great Nebula of Orion. ... green enhanced . ... halfsize or fullsize . ... Each image is a ``true color'' composite of three monochromatic images, in which the red, green, and blue intensities each correspond to the intensity of one of the original images. ... The HST image is assembled from different filters than mine: red is Nitrogen [II] at 6583 , green is H-alpha at 6563 , and blue is O [III] at 5007 . ...

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• Buying a Star: the Facts
• What is HISA?

Describes how spatial region boundaries are handled. The golden rule for spatial region filtering was first enunciated by Leon VanSpeybroeck in 1986: . ... With this in mind, the rules for determining whether a boundary image pixel or table row are assigned to a region are defined below. For image filtering, pixels whose center is inside the boundary are included. ... That is, an row is inside the boundary without regard to its integerized pixel value. ...

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• The AstroStat Slog Blog Archive [MADS] Kalman Filter
• The AstroStat Slog Blog Archive [tutorial] multispectral imaging, a case study
• The AstroStat Slog particle filter

... 11 Yellow-Green (78% transmission): Contrasts well with the red and blue characteristics of surface features on Jupiter and Saturn. ... 82A Light Blue (73% transmission): Useful on the Moon, Mars, Jupiter, and Saturn, this subtle pale blue filter enhances areas of low contrast while avoiding significant reduction of overall image brightness. ... Meade Series 4000 Photo-Visual Color Filters may be ordered individually or in the following sets: . ... Meade Series 4000 Broadband Nebular Filters . ...

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• Meade Series 4000 #3200 Lunar And Planetary Color Filter Set
• Meade Series 4000 Color Filter Set #2
• Meade Series 4000 Color Filter Set #3

Galileo image of Venus taken from 2.7 million km. ... Galileo, P-37222) . ... Central Latitude/Longitude (deg): N/A . ... Instrument: Solid State Imaging CCD Camera . ... Instrument Field of View (deg): .46 x .46 . ... Illumination Incidence Angle (deg): N/A . Phase Angle (deg): N/A . ... Surface Emission Angle (deg): N/A . ... NASA Image ID number: P-37222 . ... Code 633, NASA Goddard Space Flight Center . Greenbelt, MD 20771, USA . ... Code 630, NASA Goddard Space Flight Center . ...

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• APOD: 2000 December 29 - The Dark Horsehead Nebula
• Astronomy Picture of the Day
• APOD: August 28, 1998 - Hydrogen Trifid

... Bad Astronomy . ... What Color is Mars? ... Bizarre Image Analysis . ... One image of Mars shows a giant green splotch . Some images show it to have a blue sky, others a red sky, and in yet others the sky is butterscotch. ... When the images from Mars are returned to Earth, and then processed to make a color image, what you are seeing at best is an approximation to what your eye can see. ... When that infrared filter greyscale image is used to construct a color image, the blue tab turns pink. ...

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• Phil Plait's Bad Astronomy: Info

... Science User Portal . ... ESO, the European Southern Observatory . ... Travel and Contacts . Travel to ESO Headquarters . ... Survey Telescopes . ... Star Clusters . ... FLAMES . ... 100 Hours of Astronomy . ... IMAX€о 3D Film Hidden Universe . ... This image, the first to be released publicly from VISTA, the worldтАЩs largest survey telescope, shows the spectacular star-forming region known as the Flame Nebula, or NGC 2024, in the constellation of Orion (the Hunter) and its surroundings. ...

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• Astronomical Image Retouching
• Two very different glowing gas clouds in the Large Magellanic Cloud | ESO
• Detailed view of the Prawn Nebula from ESO's VST | ESO

... 295, 2003 H. E. Payne, R. I. Jedrzejewski, and R. N. Hook, eds. The MAST Pointings Tables Pro ject Karen Levay, Paolo Padovani1 , Randall Thompson, Megan Donahue, Michael Corbin Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218 Abstract. We have undertaken a pro ject to create a database of all HST imaging observations organized by position on the sky. ... Each sky region was called a "pointing." ... Users select the instrument pointings table they wish to search. ...

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• Improvements in Filter Design for Removing Galactic ``Cirrus'' from IRAS Images
• A Distributed System for ``Phase II'' Proposal Preparation
• ADASS 2002 Conference Proceedings

... BBSYN is used to set the frequency for the BBC or digital filter assigned to each baseband channel (subband channel in EVLA terminology). ... All baseband channels assigned to the same physical BBC should be assigned the same frequency. ... For the VLBA DAR and MkIV systems, the baseband frequency must be set on even 10 kHz frequencies. ... The PFB personality of the RDBE, ( DBE = RDBE_PFB ) has rather rigid baseband frequency options. ... Argument: Up to 16 frequencies in MHz. ...

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• Pre- and Post-Correlation filters
• Photometric Filters Activity
• Plotfields, Images and Color Maps

... Главная . ... Новости . ... Проекты . Любителям астрономии . Проект ISON . ... Подробнее . ... Категория: Новости проекта ISON . ... Метки: Космический мусор ,љ Астероиды ,љ Гамма-всплески ,љ Любителям астрономии ,љ Кометы љ . ... Метки: Космический мусор ,љ Астероиды ,љ Любителям астрономии љ . ... Новости обсерваторий проекта] - Обсерватория Кубанского государственного университета от Иванов А - 09.04.2016 11:08:49 . ... 1999-2013 Copyright "Астрономия и Телескопостроение" . ...

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CCD Forum Message . Forums: . ... CCD Tips and Techniques | Post . ... Colour Filter On A CCD . ... I was wondering if you could help me with a question I have about colour filters on CCD's: . For a CCD that is using a bayer colour filter on top of the pixel array, i have seen two different ways that this has been arranged: . ... www.astronomy.net . ... Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

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• Color Filters - an Astronomy Net Eyepieces Forum Message
• Tri-Color Images - an Astronomy Net CCD Equipment and Techniques Forum Message

... The choice of which type of electricity is called "positive" and which "negative" was made around 1750 by Ben Franklin, early American scientist and man of many talents (the stamp on the left commemorates his role as first US postmaster--and colonial postmaster before that). ... Franklin knew of two types of electric charge, depending on the material one rubbed. ... Later, when electric batteries were discovered, scientists naturally assigned the direction of the flow of current to be from (+) to (-...

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• Venus Picture List
• Astronomical Names
• Earth Picture List

... The choice of which type of electricity is called "positive" and which "negative" was made around 1750 by Ben Franklin, early American scientist and man of many talents (the stamp on the left commemorates his role as first US postmaster--and colonial postmaster before that). ... Franklin knew of two types of electric charge, depending on the material one rubbed. ... Later, when electric batteries were discovered, scientists naturally assigned the direction of the flow of current to be from (+) to (-...

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• Spacecraft Digital Imaging Cameras

... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . ... the star might be able to see the lead- and zirconium-rich . ... Naslim Neelamkodan, Simon Jeffery, Natalie Behara and Alan Hibbert are studying the surfaces of small hot stars, known as helium-rich subdwarfs. ... Now studying a group of similar stars, they have discovered two which have surfaces containing ten thousand (10,000) times more lead than is present on the surface of the Sun. ... Prof Simon Jeffery . ...

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• Lunar Eclipse March 2007
• Objects in the Sky
• Terry Mosely's Bulletins

... Exposure Time Calculator (ETC) . Survey processing . ... VISTA is a 4-m class wide field survey telescope for the southern hemisphere, equipped with a near infrared camera (1.65 degree diameter field of view at VISTA's nominal pixel size) containing 67 million pixels of mean size 0.34 arcsec and available broad band filters at Z,Y,J,H,K s and a narrow band filter at 1.18 micron. A wide field visible camera, if constructed, could also be used on VISTA. ... Tile . ... ESO VISTA Public Surveys . ...

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