... Near Infrared Camera and Multi-Object Spectrometer Instrument Handbook for Cycle 17 > Chapter 4: Imaging > 4.8 The ?Pedestal Effect? ... The instrumental signature for NICMOS data can be divided into two categories, bias and dark, according to whether or not the signal is noiseless and purely electronic in origin (bias), or noisy and arising from thermal or luminous sources (dark). ... This bias is different in each readout quadrant, but essentially constant within each quadrant. ...

Astronomy Picture of the Day . ... Hot Stars in the Southern Milky Way . ... Hot blue stars, red glowing hydrogen gas, and dark, obscuring dust clouds are strewn through this dramatic region of the Milky Way in the southern constellation of Ara (the Altar). About 4,000 light-years from Earth, the stars at the left are young, massive, and energetic. ... Welcome to the December Solstice, first day of winter in the north and summer in the southern hemisphere of planet Earth. ... Finding Dark Matter . ...

... According to the most popular cosmological paradigm, the greater part of the galaxy mass is accumulated in the dark matter halo. ... The polar ring galaxies (PRGs) reveal external rings or disks of gas, dust and stars rotating in a plane roughly perpendicular to the disk of the central galaxy. ... The shape of the dark halo in the model was chosen so as to achieve the best fit to the observed rotation of both galaxies themselves and their polar rings. ... The SPRC-7 galaxy. ...

... A major part of it is done by QC Garching, another part is done as on-line QC by Paranal staff. ... Mission goals: · see the process · understand the process · improve the process Prepare: · list of items to be discussed · list of questions you have · list of proposals · cross-check with supervisor if in doubt · ask your colleagues if you are on a first-time mission Come: · in a positive spirit; usually your visit will be much appreciated · don ... Log in as `pipeline'. ...

STEP INTO THE BLUE - MEADE INSTRUMENTS PRODUCT GUIDE . ... Telescopes . LX850 Series . ... Superb optical performance coupled with time proven computerized pointing and tracking has made the LX200 ACF series a best-seller in the high-performance telescope class. ... Meade's revolutionary LS LightSwitchтДв series of telescopes use advanced technologies to do what no other consumer telescopes have done before: take all the hassle out of using a telescope. ... Coronado€о Solar . ... Spotting Scopes . ...

LIGHT words and music by andrew eldritch The lights shine clear through the sodium haze The night draws near and daylight fades Ignore the voices discard the day For the brand new darkness for the bright new way Hit Well there have been better plans But none that I could ever understand Emerald signal the green on black The lights say move say never look back And so I find a place where I've never been seen Find another ...

... Bad Astronomy . Misconceptions . ... Bad Astronomy : "That's as remote as the dark side of the Moon!" ... As the tired, hackneyed refrains went on, one in particular caught my ear: " Fly me away to the bright side of the moon, and meet me on the other side." ... As the Moon orbits the Earth, different parts of it get illuminated by the Sun. ... Bad Addendum : At the end of the album "Dark Side of the Moon" by Pink Floyd, there is a voiceover that actually says "There is no dark side of the moon. ...

... GSAOI Home . ... Science . ... It is widely accepted that the evolution of the large scale structure of the Universe is driven by dark matter. Understanding this dark matter continues to be one of Astronomy's great unsolved problems. Measuring the bulk motions of galaxies allows us to map the overall mass distribution of the Universe in a way that is independent of the luminous matter in galaxies. ...

... One theory says that it is rotating within its own massive dark matter halo - that it is a dark galaxy; the other that it is the result of a hyperbolic encounter between NGC 4254 and another (unidentified) galaxy within the Virgo Cluster. Simulations show that the dynamics of the gas in the two models diverge north of VIRGOHI 21, with the dark galaxy theory placing this at a similar velocity to VIRGOHI 21 and the hyperbolic interaction theory giving it a much higher velocity. ...

... Fall 2005 . Fall 2004 . Winter 2005 . Spring 2005 . Summer 2005 . Fall 2003 . Winter 2004 . Spring 2004 . Summer 2004 . Fall 2002 . Winter 2003 . Spring 2003 . Summer 2003 . ... The Swift gamma-ray burst explorer was launched on Nov. 20, 2004 from Cape Canaveral, Florida. ... A number of models describing exotic forms of matter, generically referred to as dark energy (not to be confused with dark matter), have been proposed to explain this acceleration. ...

CCD Spectrometric Detectors based on Princeton Instruments exclusive 1340 в 100 CCD NTE/CDD-100E · · · · MPP for low dark charge Small height for fast spectral rates Full 26 mm spectral coverage Lowest read noise 100 90 80 Quantum Efficiency, % 70 60 50 40 30 20 10 0 200 300 400 500 600 700 800 900 1000 1100 Front Illuminated with UV Coating Front Illuminated Wavelength, nm ...

... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. May 26, 1999 . GRB 990510: Another Unusual Gamma Ray Burst . ... The type of powerful explosion that caused this gamma-ray burst is not only still unknown, but found to be fading in an unusual way . Tomorrow's picture: The Expanding Universe . ... About APOD > . ...

Voyager 2 image of the south polar terrain of Neptune's largest satellite, Triton. ... Central Latitude/Longitude (deg): N/A . ... Instrument: Narrow Angle Vidicon Camera . ... Instrument Field of View (deg): .424 x .424 . ... Illumination Incidence Angle (deg): N/A . Phase Angle (deg): N/A . ... Surface Emission Angle (deg): N/A . ... NASA Image ID number: P-34714 . ... Code 633, NASA Goddard Space Flight Center . Greenbelt, MD 20771, USA . ... Code 630, NASA Goddard Space Flight Center . ...

... Astropark . ... These are important assets, and the Governors of the Armagh Observatory and Planetarium have an unrivalled opportunity to develop a centre for the public understanding of science, explaining the history and motivation for the development of astronomy and related sciences over more than 200 years, and the context in which present research is carried out. ...

... Ten years ago a startling discovery stunned the astronomical community. ... This illustration reveals the changing rate of cosmic expansion: the shallower the curve, the faster the rate. ... Michael Turner of the University of Chicago coined the term "dark energy" to describe the unknown force that is hastening cosmic expansion. ... If you enjoyed this excerpt from a feature article and would like to receive our quarterly Mercury magazine, we invite you to join the ASP and receive 4 issues a year. ...

Astronotes Armagh Planetarium's Stellar Blog! ... Our Galaxy . ... Universe . ... Cosmology . ... Space Flight . ... Posted on March 25, 2013 | ... Continue Reading.. ... Posted on October 20, 2011 | ... 2 Comments A long, long time ago when the first stars and galaxies were forming, the Universe was filled with electrically neutral hydrogen. ... Posted on September 29, 2011 | ... Posted on May 27, 2011 | ... No Comments Galaxies, distant from us in space and time, have been in the news recently. ...

... PROBLEMS: "Unknown" (i.e. no physics model) components; What's a "Good-Enough-Fit" (e.g. Poisson)? ... ASIDE: MULTI-SCALE FOR POISSON - called Multiplicative Multiscale Innovation Models MMI Slides courtesy of R.Willett, SAMSI 2006 Timmermann Nowak, 1999 Kolaczyk, 1999 ASIDE: MULTI-SCALE FOR POISSON - called Multiplicative Multiscale Innovation Models MMI Slides courtesy of R.Willett, SAMSI 2006 Timmermann Nowak, 1999 Kolaczyk, 1999 ASIDE: MULTI-SCALE FOR ...

Neptune . ... Triton . Neptune 291k gif . Full Disk Neptune 93k gif ; 29k jpg . ... New Dark spot 25k jpg ; 113k gif ; caption ; press release . ... Another thin Crescent of Neptune 166k gif . ... low resolution shot of Neptune, possibly showing great black spot 210k gif . ... Parting view of Neptune and moon Triton 59k gif ; 17k gif ; 23k jpg . ... Small Dark Spot 190k gif ; 133k jpg . Small Dark Spot 55k gif ; 23k jpg . ... The Great Dark Spot 423k gif ; 153k gif ; 97k jpg . ...

... 1024 x 1024 pixels (13.3 mm) . ... APOGEE U-47UV 13 um pixel, back-illuminated, UV enhanced . Read-out time: . 1 sec for the whole field, 1x1 binning . Pixel Scale: . ... 1.25 e-/ADU (left, right) . Read-out noise, e: . ... 0.1 e-/sec at T ~ -30C . ... 4096 x 4096 pixels (36.9 mm) . ... Apogee U16M-HC, 9 um pixel, KAF-16803, front-illuminated . ... 24 sec, 1x1 binning . ... 1.4 e-/ADU . ... 0.01 e-/sec at CCD T ~ -40C . ... ADU saturation: . ...

XMM-Newton Science Analysis System Page: 1 dssetdata July 2, 2008 Abstract Copy an object's data to another object This task is part of the daltools package 1 Instruments/Modes Instrument Mode 2 Use 3 Description Copy an object's data to another object. ... Must have the same type as 'from'. xmmsas 20080701 1801-8.0.0 XMM-Newton Science Analysis System Page: 2 5 Errors This section documents warnings and errors generated by this task (if any). ...