Fabrication Technology for Single Electron Transistors and Submillimeter Detectors Fabrication Technology for Single Electron Transistors and Submillimeter Detectors Carl Stahle1, Thomas Stevenson2, Rob Schoelkopf 3, Abdelhanin Aassime4, Per Delsing 4 Charles He1 , Mary Li5, Ken Segall3 ... The antenna couples submillimeter photons to an Al superconducting absorber strip, and these photons generate quasiparticles in the absorber strip. ... First, all device structures were fabricated. ...

... About ATNF overview . ... Governance overview . Australia Telescope Steering Committee . ... Australia Telescope User Committee . ... Our people overview . ... ATCA . ... Images . ... ATNF researchers have used the Australia Telescope Compact Array near Narrabri to image the radio remnant of SN 1987A at 12 mm wavelength (18.5 GHz) using all six antennas of the Compact Array to give a maximum baseline of 6km. This image is the highest resolution image ever obtained with the Compact Array. ...

Summary of SPHERE performance at NIH Ralf Siebenmorgen (PS) and Markus Kasper (PM) SPHERE performs in the NIH similar to what was achieved in Grenoble. ... IRDIS The IR and V filters are well mounted and the positioning accuracy is within a 1% pixel tolerance. ... The IRDIS detectors have a read-out noise 9.4 e-, a gain of 2e-/ADU and the dark current is <0.5e-/pixel/s. The instrumental background is still high. ... Centering of the pupil is achieved at an accuracy of 0.1% of the pupil diameter. ...

TOWARDS SUPERSENSITIVE BOLOMETERS AND ELECTRON COOLERS BASED ON CARBON NANOTUBES M.TARASOV, J.SVENSSON, S.DITTMER, L.KUZMIN, AND E.CAMPBELL Chalmers University of Technology, GЖteborg SE 41294, Sweden E-mail: Mikhail.tarasov@mc2.chalmers.se Carbon nanotubes (CNT) are being intensively developed for novel electronics. Electron cooling by superconductor-insulator-nanotube (SIN) tunnel junctions could be extremely effective due to the small volume of the CNT. ...

The fact charged particles circle around field lines was well known to J.J. Thomson when he experimented with electron and ion beams in a magnetic field. ... The notion of adiabatic invariance is tied with the early years of quantum theory. ... By the rules of conventional physics, atoms were expected to continually lose energy, yet the absorption and emission of light suggested that they could exist in certain stable states where their energy was fixed. ...

... While "First Light" was achieved at the second 8.2-m VLT Unit Telescope (UT2) ahead of schedule, UT1 produced its sharpest image so far. ... It had long been ESO's intention to provide "real" names to the four VLT Unit Telescopes, to replace the current, somewhat dry and technical designations as UT1 to UT4. ... The participants were left with the impression of mounting expectations, just four weeks before the first VLT Unit Telescope, Antu (UT1), will receive the first visiting astronomers. ...

Next: Estimating the angle Up: Wavelength Calibration Previous: General Description . The wavelength calibration involves a physical equation, the echelle relation and regression analysis to achieve estimates of the dispersion relation. Provided that the echelle dispersion is performed with a grating, any echelle spectrum can be calibrated usually with four lines used as pre-identifications and a catalog of laboratory wavelengths associated to the calibration lamp. ... Echelle Relation) . ...

... scattered light in flats less than 0.5% across 5' field of view . scattered light in flats less than 0.5% across entire field . ... no greater than 10% across field, and calibrateable to better than 1%. no greater than 5% across field, and calibrateable to better than 0.5%. ... provide unvignetted illumination across detector with new SDSS filter set . ... throughput stable to better than 0.5% over course of a night. throughput stable to better than 5% over thermal cycling and seasonal variation . ...

A long Chandra observation of Tycho has revealed a pattern of X-ray "stripes" never seen before in a supernova remnant. The stripes are seen in the high-energy X-rays (blue) that also show the blast wave, a shell of extremely energetic electrons. ... The stripes may provide the first direct evidence that a cosmic event can accelerate particles to energies a hundred times higher than achieved by the most powerful particle accelerator on Earth. ...

... On May 26 & 27, 1998, about 50 participants met for the workshop ``NICMOS and the VLT'' in Pula, Sardinia, Italy. ... The workshop took place at a time when the expected remaining lifetime of NICMOS was about 7 months, and the first call for proposals for VLT was about 3 month away. The timeliness of the workshop was underlined by the fact that first light for the VLT occurred in the midst of this meeting, which has not been anticipated at the time the date for the workshop was set. ...

... Chandra Survey . ... NOAO Survey . ... Bulge Windows Survey . ... SEEING = FWHM in arcseconds FIELD FILTER DEPTH EXPTIME SEEING ------- ------ -------- ------- -------- A0620 V 23.40 600 0.940 R 24.00 1140 0.863 I 23.17 840 0.850 Ha 23.38 6600 0.788 B2224 V 22.35 180 1.544 R 24.88 2100 0.911 I 21.50 900 1.307 Ha 23.95 9000 0.963 C123 V 24.39 540 1.096 R 25.31 1200 0.799 I 22.95 540 1.323 Ha 24.22 6900 0.968 C129 V 24.51 540 1.091 R 24.04 1200 1.119 I 23.76 540 0.828 Ha 24.00 ...

. Sitemap . Contact . Search . Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . View presentation on-line . or . Download PowerPoint file - 2MB . Last Revised: 2010 February 22nd .

... 6.02.1999 . ... Credit: ABMA , Courtesy JPL Explanation: The first US spacecraft was Explorer 1 . ... Explorer I carried instrumentation to measure internal and external temperatures, micrometeorite impacts, and an experiment designed by James A. Van Allen to measure the density of electrons and ions in space. ... NASA Web Site Statements, Warnings, and Disclaimers . ... Publications with keywords: spacecraft - explorer 1 - Van Allen . Publications with words: spacecraft - explorer 1 - Van Allen . ...

... February 10, 1996 . The First Explorer . ... Explorer I carried instrumentation to measure internal and external temperatures, micrometeorite impacts, and an experiment designed by James A. Van Allen to measure the density of electrons and ions in space. The measurements made by Van Allen's experiment led to an unexpected and startling discovery - an earth-encircling belt of high energy electrons and ions trapped in the magnetosphere - now known as the Van Allen Belt . ... About APOD | ...

To measure Tsys, we record simultaneously and continuously two-polarization continuum data along with all VLBI observations at Arecibo. ... For a particular C-band VLBI, the band centre of the receiver was set to 5050 MHz, which was down converted in the Gregorian dome, and then brought down to the control room. ... Using an off-source section of the continuum data at a known Az and Za, and the "standard Tsys and Gain curves" the raw-counts are converted to SEFD values. ... 244 4:03:10.00 6.83870 . ...

... Thus all regions of the 0.94-2.50 micron wavelength range accessible from Mauna Kea can be recorded using five fixed angle gratings. ... Grating Angle . ... Efficiencies for the NIFS gratings are shown above. The NIFS spectrograph uses a Bouwers collimator and a refractive camera. ... With these assumptions, the NIFS system efficiency including the Gemini telescope optics but excluding the transmission of the adaptive optics system is about 0.17 e - /photon at J , and 0.22 e - /photon at H and K . ...

... 1987 - Yuri Romanenko (326 days 11 hrs 38 min) . 1988 - Vladimir Titov, Musa Manarov (365 days 22 hrs 39 min) . ... Shannon Lucid, the USA (188 days 04 hrs 00 min, including a stay-time on the MIR Station of 183 days 23 hrs 00 min) in 1996. ... 188 days 20 hrs 16 min . ... 78 egresses into space were performed on the MIR Orbital Station (including three egresses into the unpressurized Spektr module) of a total duration of 359 hrs 12 min. ... Official WEB-site of S.P.Korolev RSC Energia . ...

A satellite view of the COAST telescope . ... How the COAST telescope works . ... Four telescopes are focused on the object of interest and the image from each telescope passes through aluminium tubes into the beam combining building . ... The incoming light is reflected from the siderostat mirror onto the primary mirror, which focuses the light on a small mirror. ... Part of each light beam is used in the guiding system which makes sure the telescopes are kept pointing at the object of interest. ...

... Sally K. Ride (Ph.D.) . NASA Astronaut (DECEASED) . ... EXPERIENCE: Dr. Ride was selected as an astronaut candidate by NASA in January 1978. In August 1979, she completed a one-year training and evaluation period, making her eligible for assignment as a Mission Specialist on future space shuttle flight crews. ... In 1989, Dr. Ride joined the faculty at the University of California San Diego as a Professor of Physics and Director of the University of California's California Space Institute. ...

Description of a NASA Study to Deflect Hazardous Asteroids . ... In January 2007 this author served as Principal Investigator (P. I.) for the Kinetic Deflection of NEOs during a Study conducted by NASA at the Marshall Space Flight Center (MSFC) in Huntsville, Alabama, USA. ... Nuclear Deflection, achieved by virtue of a B83 nuclear warhead (Prof. John Remo of Harvard University served as P. I. for this nuclear deflection study); . ...