... 21.12.2002 . ... Credit: SOHO - EIT Consortium, ESA , NASA Explanation: Aloha and Season's greetings! On December 22nd, at 01:14 Universal Time (December 21, 3:14pm Hawaii-Aleutian Standard Time ), the Sun reaches its southernmost point in planet Earth's sky marking the final season change for the year 2002. In celebration, consider this delightfully detailed, brightly colored image of the active Sun . ... December . ... Publications with keywords: Sun - eit - extreme ultraviolet - solstice . ...

... 2002 December 21 . Solstice Celebration . ... Each individual image highlights a different temperature regime in the upper solar atmosphere and was assigned a specific color; red at 2 million, green at 1.5 million, and blue at 1 million degrees C. The combined image shows bright active regions strewn across the solar disk, which would otherwise appear as dark groups of sunspots in visible light images, along with some magnificent plasma loops and an immense prominence at the righthand solar limb. ...

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. ...

... 2000 June 21 . Solstice Celebration . ... Each individual image highlights a different temperature regime in the upper solar atmosphere and was assigned a specific color; red at 2 million, green at 1.5 million, and blue at 1 million degrees C. The combined image shows bright active regions strewn across the solar disk, which would otherwise appear as dark groups of sunspots in visible light images, along with some magnificent plasma loops and an immense prominence at the righthand solar limb. ...

... 1100 FTT/NAS . ... 1120 Camera . ... 1140 Camera Mount & Enclosure . ... 1170 Test Equipment . ... 1200 FLC . ... MRO-PLA-CAM-0000-0106 FTT/NAS & FLC Development Plan . ... MRO-ICD-CAM-1000-0109 "FTT/NAS,FLC-UTE" FTT/NAS & FLC to Enclosure ICD . MRO-ICD-CAM-1000-0110 "FTT/NAS,FLC-NOT" FTT/NAS & FLC to optical table ICD . MRO-ICD-CAM-1000-0111 "FTT/NAS,FLC-UT" FTT/NAS & FLC to UT optical ICD . ... Printable View of http://www.mrao.cam.ac.uk/projects/OAS/pmwiki/pmwiki.php/MROIFastTipTilt/DocMan) ...

In this gallery are many images of Low Surface Brightness Galaxies which have recently been discovered and analyzed. ... The central surface brightness of this galaxy is 24.28 . Malin 2 This galaxy is another huge disk galaxy with a scale length of 15 kpc and a redshift of 15000 km/a. The high surface brightness knot in one of its spiral arms actually has the same color, luminosity and H-alpha equivalent width as the entire Large Magellanic Cloud . ... Truly it is a Low Surface Brightness Galaxy. ...

... Ideally, this map contains the energy offset for each pixel (expressed in analog-to-digital units, adu). ... High-energy particles hitting the EPIC pn CCD during the offset map calculation may cause the affected pixels to get offset values which are incorrect by a few adu. ... Due to the specific method of deriving the offset map onboard, the affected areas occur often in blocks of four consecutive pixels along readout direction. ... The affected pixels usually get an offset which is too small. ...

... Steven L. Smith . NASA International Space Station Program Liaison to the European Space Agency . ... SPECIAL HONORS: NASA Distinguished Service Medals (two), NASA Outstanding Leadership Medal, NASA Space Flight Medal, NASA Exceptional Service Medal, IBM Outstanding Technical Achievement Award and IBM Outstanding Community Service Award. ... NASA EXPERIENCE: Smith is a veteran of four space flights covering 16 million miles and seven space walks totaling 49 hours and 25 minutes. ... DECEMBER 2013 ...

CREW 21/22 . ... ISS-21 IMAGE . ... ISS-22/23 Flight Engineer, . ... In August 1996 Wheelock was assigned to the Johnson Space Center as a test engineer to provide the Shuttle equipment test. ... He was assigned as a lead test engineer participating in the ISS hardware testing. ... In 2001 he was assigned as the support astronaut for the ISS-2 and ISS-4 crews. ... The main objective of the flight was to deliver the new Harmony module to the International Space Station and deploy P6 Solar Arrays. ...

The selection of the quietest days (Q-days) and most disturbed days (D-days) of each month is deduced from the Kp indices on the basis of three criteria for each day: . ... In order to indicate such a situation, selected days which do not satisfy certain absolute criteria are marked as follows. ... A selected disturbed day is considered not really disturbed and marked by an asterisk ( * ) if Ap less than 20. ... January 2000 - recent . January 1990 - December 1999 . ...

... 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 (-...

. 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

Function: GDI_CINFO Purpose: Obtains info about the color tables of the display. Category: DISPLAY File: gdilib.c Author: K.G. Begeman Use: INTEGER GDI_CINFO( GDI_ID, Input INTEGER MINCOL, Output INTEGER MAXCOL, Output INTEGER NCOLORS, Output INTEGER BLANK ) Output INTEGER GDI_CINFO Returns zero on success, negative on error. ... MINCOL Minimum display value for which a color can be assigned. MAXCOL Maximum display value for which a color can be assigned. ...

International Q-Days and D-Days ---------------------------------------------------------------------------- Classification of Days (deduced from Kp indices) The selection of the quietest days (Q-days) and most disturbed days (D-days) of each month is deduced from the Kp indices on the basis of three criteria for each day: 1. ... In order to indicate such a situation, selected days which do not satisfy certain absolute criteria are marked as follows. ...

... 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 . ...

... Bad Astronomy . ... Bitesize Astronomy . ... Keep Bad Astronomy close to your heart, and help make me filthy rich. ... When Venus is on the far side of the Sun, we see the entire near side lit by the Sun. ... When it is on the near side of the Sun, it shows a beautiful thin crescent, because it is between us and the Sun and we see the mostly unlit dark half. ... To see this for yourself, draw a circle one centimeter across, then, next to it, draw a circle 6 centimeters across. ... 2008 Phil Plait. ...

... Normative references . ... Available at http://www.w3.org/TR/REC-CSS1-961217 . ... Available at http://ds.internic.net/rfc/rfc1700.txt . ... For more information, consult http://www.iso.ch/cate/d4766.html . See also http://www.sil.org/sgml/iso639a.html . ... Available at http://ds.internic.net/rfc/rfc1555.txt . ... Available at http://ds.internic.net/rfc/rfc1556.txt . ... Available at http://ds.internic.net/rfc/rfc1738.txt . ... Available at http://ds.internic.net/rfc/rfc1766.txt . ...

To change the Scaling Function (how pixel values are binned into color levels): . ... For example, the basic grey-scale color map specifies no intensity for any color at the lowest color level, full intensity for all colors at the highest color level, with the red, green and blue intensities varying linearly for intermediate levels. ... At low bias, low color levels (i.e., low pixel values) will have non-zero intensities, while at high bias only high pixel values will have non-zero intensity. ...

... Articles | ... Forums . ... 230 deg . 49 deg . ... 130 deg . ... More Info . ... 210 deg . ... 168 deg . ... 249 deg . ... 195 deg . ... 271 deg . ... 110 deg . ... 338 deg . ... July 15 . 247 deg . ... 224 deg . ... 340 deg . ... July Phoenicids (PHE) . ... August 10 . 341 deg . ... 339 deg . ... 307 deg . ... 334 deg . ... 335 deg . ... 286 deg . ... 327 deg . ... 262 deg . ... 102 deg . ... 153 deg . ... 117 deg . ... December 2 . ... 123 deg . ... 100 deg . ... www.astronomy.net . ...

... Armagh Planetarium . ... Our Galaxy . ... Universe . ... For those of you that are still bearing the psychological scars from PlutoтАЩs demotion from planet to dwarf planet a decade ago, here is news that may add salt to [ ] . ... In 2015 Armagh PlanetariumтАЩs website (including Astronotes) received well over 2.6 million page views (and over 75 million web hits*) from all over the world. ... Here you will find the latest news and views from the fascinating worlds of astronomy and space exploration....