Optical and UV Spectrophotometric Standard Stars . ... Two papers detail the observations: the first is devoted to wavelengths from 3300 to 7550A (Hamuy et al., ... -------------------------------------------------------- 718 Xi2 Cet B9 III -O.107 -0.056 4.279 -0.023 -0.063 1544 Pi2 Ori Al V 0.01 4.355 0.014 0.039 3454 Eta Hya B3 V -0.743 -0.200 4.295 -0.083 -0.200 4468 Theta Crt B9.5 V -0.18 -0.07 4.700 -O.023 -0.063 4963 ...

Next: Access to Data Sources and the ESO SkyCat Tool . ... We describe an implementation of Dynamic Queries (DQ), a recently developed method as an alternative to the perceived complicated SQL-type operations on relational databases by a very intuitive graphical interface. This prototype implementation, written within the NEMO package, uses ASCII sliders and the PGPLOT graphics interface and uses a novel interactive analysis back-end tool that is dynamically associated with the query. ...

Change in Brightness Kepler 4b 0.0 % - 0.1 %0.12 - 0.2 % 0.14 0.16 0.18 0.02 0.04 0.06 0.08 Transit Light Curves Set 1 Transit Tracks p. 3 2 4 6 8 10 12 14 16 Time (in days ) 18 20 22 24 26 Change in Brightness HAT-P-7b 0.0 % -1.0% -2.0% 0.2 0.4 0.6 0.8 1.2 1.4 1.6 1.8 2.2 2.4 2.6 2 4 6 8 10 12 14 16 Time (in days ) 18 20 22 24 26 Change in Brightness HAT-P-11b 0.0 % -0.5% -1.0% ...

from __future__ import division from visual import * scene = display(range=(3.0,3.0,3.0),width=1300,height=800,forward=( 0.2 ,-0.3,-1.0)) water = box( pos =(0,- 0.1 , 0.0 ), length=10, width=3, height= 0.1 , color =( 0.1 , 0.2 ,1.0)) alength = 2.0 theta = 0.1 pos1 = vector (0,0,0.6) barge1 = box( pos = pos1, length = 2, width = 0.5, height = 0.1 , color =(0.6,0.4, 0.2 )) x1 = arrow( pos = pos1+ vector (0, 0.1 ,0), ...

... Dust in Nuclei of Galactic Bulges . ... WFPC2 of 20 nuclei of nearby galactic bulges of types S0-Sbc. ... Bulges of spiral galaxies are generally seen as small elliptical galaxies in the center of a large spiral. ... Here we show first results of a color study of the centers of galactic bulges. ... With these three bands we can make the red I - H color, primarily sensitive to extinction by dust and old stellar population gradients, and the B - I color, especially sensitive to recent star formation. ...

... public class EDM . ... Euclidean Distance Map: The value of each pixel is the distance to the nearest background pixel (for background pixels, the EDM is 0) - Ultimate Eroded Points (UEPs) are maxima of the EDM. ... static int . ... Unit in old make16bitEDM: this pixel value corresponds to a distance of one pixel. static int . ... int . ... For compatibility with previous versions of ImageJ only. public FloatProcessor makeFloatEDM ( ImageProcessor ip, int backgroundValue, boolean edgesAreBackground)...

... Planets . ... Stars . Exoplanets . ... Most exoplanets so far discovered fall into the category of тАШhot JupitersтАЩ, these are giant planets orbiting very close to their parent star. ... Note that we have discovered so many hot Jupiters because they are the easiest type of planet to find, they are not necessarily particularly common in the galaxy. ... Subsequently several similar hot and€а fuzzy worlds have been discovered the same way, proving this that this planet is not a one-off oddball. ...

... Tonight's Sky . ... Sky this Month . ... The Sky This Week: April 1 - 10 . ... Sky this Week . ... Sky Events . ... Curiosity's ChemCam laser first analyses yield beautiful results . ... ChemCam's laser was used to analyze material at the centers of panels 2, 3 and 4. ... When ChemCam fires its extremely powerful laser pulse, it briefly focuses the energy of a million light bulbs onto an area the size of a pinhead. ... Only registered members of Astronomy.com are allowed to comment on this article. ...

... POLAM-L . ... ABOUT LOMO . ... MICROSCOPES . ... OEM OPTICAL COMPONENTS . ... SURGICAL MICROSCOPES . ... Home Products Microscopes POLAM-L . ... The POLAM?- ... The 360° rotatable head features a built-in iris diaphragm, optical path selector and a vertical photo/video port. ... Microscopes, the stand allows attachment of all the standard and optional modules and components such as stages, condensers, illuminators, intermediate module, and LOMO’s unique, rotatable Monochrometer . ... STAGES . ...

... Go to This section of the glossary . ... APHELION : The point in a planet's orbit where it is farthest from the sun. ... It melts at 83.95 K, and boils at 87.45 K. Many people don't realize that argon makes up a full 1% of our atmosphere, while carbon dioxide is only a fraction of a percent of our atmosphere. ... COMET: An object moving about the sun in an eccentric orbit and composed of materials which, on warming up near the sun, form a "tail" which always points away from the sun. ...