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... 2002 September 3 . A Dust Devil on Mars . ... Explanation: Does the surface of Mars change? When inspecting yearly images of the Martian surface taken by the robot spacecraft Mars Global Surveyor currently orbiting Mars , sometimes new dark trails are visible. ... Pictured above , a recent image has not only captured a new dark trail but the actual dust devil itself climbing a crater wall . Dust devils are created when Martian air is heated by a warm surface and begins to spin as it rises. ...

... As of October 1, 2009, the global rate for the STIS NUV-MAMA dark current has still been occasionally reaching values as high as 13500 counts/s. This high dark current will force use of a signficantly smaller buffer time than would be otherwise needed, and in many cases may push the count rate high enough to make time-tag observations impractical. ... However, we instead found for the NUV MAMA detector an initial global dark rate of between 9000 and 18000 counts/s (a mean of 0.013 counts/s/pixel). ...

image collection >> physical phenomena >> currents . Image ers0009050149 . ... Japan Sea . ... The Primorye Current off the southeastern Russian Primorye coast (Japan Sea). The Primorye (Liman) Current is the main cold current in the Japan Sea. It follows along continental slope at the distance of 18-30 km from the coast and has maximum speed at a depth of 100 m. In the image, current waters are visible as the darker band gradually thinning southward. ... surface geometry : 100*100 km . ...

CIMA is more than just the observing tool - in fact, the observing tool is just a part of a bigger package called the CIMA software package. ... There is also a another package called the CIMA WAPP software which contains the WAPP software, the special Tcl/Tk interpreter used by CIMA and support libraries. ... All CIMA software components recognize the following general options that are part of the CIMA version selection system: . ... The select_cima script can be used to set up a default version. ...

Next: Modes of Operation Up: CCD Scientific Performance Previous: Field of View . Thermal excitation of charge carriers from the valence to the conduction band creates a dark current signal which may vary with position in the array, and also has temporal shot noise variation. ... In a device devoid of localized defects which give rise to individual dark current spikes , most dark current arises from electrons generated at interface states at the surface. ...

... 23 September 2004 - Telescope First Light! ... 30 July 2004 . ... NIC-FPS is an instrument combining the capabilities of a near-infrared imaging camera with a cryogenic Fabry-Perot etalon currently under development at the Center for Space Astrophysics and Space Astronomy , University of Colorado with support from Rice University , Ball Aerospace and the Astrophysical Research Consortium. It is scheduled to begin operations on the ARC 3.5m telescope at Apache Point Observatory in 2004. ...

Next: Standard orientation Up: Preprocessing Previous: Bias correction . In a similar manner, long dark exposures of the same exposure time can be averaged to produce the DARK frames. ... Use the command COMPUTE/IMAGE to multiply the images by the exposure time and to add back the value for FLAT_BKG . ... Often, BIAS and DARK contain no large - scale structure. ... The commands AVERAGE/IMAGE and AVERAGE/WEIGHT offer number of options to compare the images and filter particle hits. ...

... CURRENT ASPECTS OF REMOTE SENSING OF EARTH FROM SPACE . ... For developing of the scientific concept and the programs of global monitoring of the Earth from space and pursuant to the disposal of Presidium of Russian Academy of Sciences # 10310-717 (August 11, 2004 ) Space Research Institute RAS and Center of Space Observations of the Russian Space Agency during November 16-18, 2004 conduct the Second Opened All-Russia conference ' Current Aspects of Remote ...

... Users . ... AAS 225 . ... This particular part of the analysis has been disabled since the code is struggling to cope with the number of users seen this year, in particular the large contingent of people who have re-tweeted NASA. ... The links between the accounts identify those users who have mentioned another user in a tweet, using the @name syntax; the line widths increase based on the number of mentions but given that the graph is ever-so-slightly crowded this isn't that useful at this time. ...

Astronomy Picture of the Day . Introducing Nova Velorum 1999 . 24.05.1999 . A bright nova was discovered Saturday that is currently visible to the unaided eye in southern skies. ... John U. Obs.), making it more luminous than many famous bright stars. The Keyhole Nebula . ... The dark dusty Keyhole Nebula gets its name from its unusual shape. Officially designated NGC 3324, the Keyhole Nebula is a smaller region superposed on the larger Eta Carina Nebula. ... Europe at Night . ...