... 2000 April 6 . Venus, Moon, and Neighbors . ... Explanation: Rising before the Sun on February 2nd, astro photographer Joe Orman anticipated this apparition of the bright morning star Venus near a lovely crescent Moon above a neighbor's house in suburban Phoenix, Arizona, USA. Fortunately, the alignment of bright planets and the Moon is one of the most inspiring sights in the night sky and one that is often easy to enjoy and share without any special equipment. ... About APOD | ...

... Content Model: Table Cells (TH or TD) . The TR element acts as a container for a row of table cells defined with the TH or TD elements. ... You also have the ability to disable word wrap for the row, and thereafter use the <BR> element to determine line breaks and hence cell widths. ... The recommended approach is to subclass rows using the CLASS attribute For example: <TABLE BORDER COLSPEC= .. ... ALIGN . ... This is used when you want to ensure that all cells in the row share the same baseline. ...

Next: Status of the BIMA Image Pipeline . ... We describe all the steps of the standard reduction including per pixel error propagation: Bias correction, treatment of bad pixels, flatfielding, and filtering of cosmic ray events. ... We build difference images via image convolution with a technique called OIS (optimal image subtraction, Alard & Lupton 1998), proceed with PSF-fitting, relative photometry on all pixels and finally apply an automatic detection of variable sources. ...

... TD = Minimum cost for a possible transformation of s into t. Any transformation which gives this minimum is called an optimal transformation. ... The running time is given by: O((m'3+n'3)|Alpha|+mn'2+nm'3+mn) A different look at Duplication History s 1 s2 s 3 s 4 s 5 s 6 s 7 s 8 s 1 s 2 s 3 s 4 s5 s 6 s 7 s 8 observed s s Right duplication Left duplication Right duplication Left duplication Right duplication Right duplication Right ...

... The computer is set up so that the software for whatever camera is running and the switch box set to channel B. This allows the monitor and keyboard upstairs to operate the computer. Now the telescope can be set up. ... In the North west of the dome, there is a motor that turns the dome. The dome opens with a motor that pulls the slit back. ... Each camera had a specific alignment with the telescope. ... The lights on the roof provide a nice target to center in all three telescopes. ...

... Interstellar features seen in spectra of HD23180 (upper frame) and spectra of heavily reddened stars (lowest frame). Other frames (as described on the right) show the synthetic spectrum for HD23180 and the average spectrum for all of the reddened stars after alignment on the interstellar atomic lines. ... Solid arrows are DIB known from other surveys, dotted arrows in later figures and the new DIB found in this survey. ... Download average spectrum of reddened stars . ...

Michele Bannister . Other research . ... The mutual events of Haumea . The dwarf planet Haumea is the parent of a collisional family that includes its two moons, Hi'iaka and Namaka. ... The arid and windswept McMurdo Dry Valleys of Antarctica are carpeted with the polygons of patterned ground , a geological formation that is also seen on the northern plains of the planet Mars. ... I worked to understand the influence that buried masses of ice have on the development of patterned ground. ...

... The collecting area is increased by nesting concentric mirror pairs, all having the same focal length. ... Figure shows the largest optical element being ground at HDOS. ... X-ray testing demonstrated that the CXO mirrors are indeed the largest high-resolution X-ray optics ever made; the nominal effective area (based on the ground calibrations) is shown as a function of energy in the left panel of Figure , along with those of their Einstein and ROSAT predecessors. ...

... Free image alignment/stacking/processing Software . My lunar drawings . ... REAL TELESCOPES . ... Download Pocket-Aberrator . ... The Aberrator is freeware that generates star-testing images to show the effects of aberrations (distortions) influencing the quality of a telescopes performance. ... The idea to make a program like the Aberrator I got after studying many internet-sites on star-testing and often the effects of certain aberrations were only available as literal descriptions. ...