... LO frequencies were 1/2, 1/3 and 1/8 of signal frequency 75 GHz. ... But single junction SIS mixer has 30 dB input signal power range only [ll and it may decrease at high frequencies more than 200 GHz due to Josephson and 1 "switching" noise rise [2 e Our experiments show that subhurmonically pumped SIS mixer may have improved saturation power and reduced noise at high frequencies in some operation modes. ... 269 Fig.2 Quantum for LO and signal frequencies SIS operating mode. ...

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• Lab234 - Development, study and optimization of the superconducting phase
• Lab234 - Technology for fabrication of superconducting integrated circuits
• Lab234 - Development of the superconducting elements for operation at

... We have developed an integrated system that performs astronomical observations in Near Infrared bands operating two-dimensional instruments at the Italian National Infrared Facility's ARNICA and LONGSP . ... The user interface is organized as widget-based X11 client. ... 1993; Di Giacomo et al. 1993). ... Moreover, if the interprocess communication interface includes support for networking, the software immediately becomes network distributed software. ... DESQview/X User Guide 1993, Quarterdeck . ...

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• Object Oriented Near Real Time Packet Distribution as Part of the FIRST
• The CATS Database to Operate with Astrophysical Catalogs
• CORBA as an Interoperability Tool for Astronomy

Distributed Software for Observations in Near Infrared V. Gavryusev 1 and C. Baffa Osservatorio Astrofisico di Arcetri E. Giani Dipartamento di Astronomia, Universit`a di Firenze Abstract. ... The processes denoted for control of hardware (telescope and other instruments) should be executed currently on PC dedicated for this task under DESQview/X, while all other components (user interface, tools for the data analysis, etc.) can work also under Unix. ... 1993, Di Giacomo et al. 1993). ...

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• Fasti Web Site

. Next: Pulse Widths Up: Integrated and single pulse Previous: Integrated and single pulse .   . Huge variations from pulse to pulse . Integrating several 100 forms a stable profile . Integrated profiles differ widely . Basic model includes core + cone . Slice in different ways to get various profiles .     . Figure 54: Integrated pulse profiles . Jon Bell . Thu Dec 19 15:15:11 GMT 1996

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• Frequency Frame Alignment
• Undefined Values (BLANKs)
• VLBI Wiki | PmWiki / AccessKeys

... The time taken to read through a quadrant on the array sets a fundamental limit on the fastest electron collection rate which can be achieved by resetting all the pixels. An inherent consequence of the methods of operating the NICMOS array detectors in the ACCUM, MULTIACCUM, and RAMP modes is therefore that there is a minimum possible exposure time, ~ 0.6 seconds (0.302 for MULTIACCUM), set by the time required to read the array. ... Figure 15.1 illustrates the operation of bright object mode. ...

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• Near Infrared Camera and Multi-Object Spectrometer Instrument Handbook for
• WFC3 Instrument Handbook
• The Mid-Infrared Instrument for the James Webb Space Telescope, X: Operations

... 2012 March 13 . The M81 Galaxy Group Through the Integrated Flux Nebula . ... Explanation: Large galaxies and faint nebulae highlight this deep image of the M81 Group of galaxies. First and foremost in the wide-angle 12-hour exposure is the grand design spiral galaxy M81 , the largest galaxy visible in the image. ... This whole galaxy menagerie is seen through the faint glow of an Integrated Flux Nebula , a little studied complex of diffuse gas and dust clouds in our Milky Way Galaxy . ...

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• APOD: 2008 May 12 - The M81 Galaxy Group Through the Integrated Flux Nebula
• Vector Operations
• SAI Supernova catalog

ERS -1,2 SAR . ... SIR-C/X SAR . ... European Remote Sensing Satellite (ERS-1) was launched on 17 July 1991, and the follow mission ERS-2 (with the same sensors and an Ozone monitoring instrument added) was launched on 21 April 1995. ... The Spaceborne Imaging Radar-C/X-band Synthetic Radar (SIR-C/X-SAR), carried in the cargo bay of the Space Shuttle Endeavour in April and October of 1994, simultaneously recorded SAR data at three wavelengths (L-, C-, and X-bands; 23.5, 5.8, and 3.1 cm, respectively). ...

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• Some results from Intmins
• Ionospheric troughs [Oulu]
• Substorm fine structure [Oulu]

... See spectral jumps at 2^n channels Intro for a description of pshift,pfb, term s . ... pshift . ... 0x1ff5 . ... 0x1555 . ... noise pshift . ... noise pshift, first butterfly no shift . ... 0x1555 shift every other butterfly (this should work for noise) . ... the black trace has pshift=0x1ff5 (the current standard). the red trace uses 0x1555. shift every other butterfly (with a shift on the first butterfly) . ... When a pshift of 0x1555 is used (shift every other butterfly) no jumps are seen . ...

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• Getting the Best Performance from the API
• spectrometer counts to kelvins
• Spectral-Line Observing

... Previous message: [sas-uploads] Scheduled downtime for SAS integration systems . ... -84-15 --089e013a282c77c89604dfe251e2 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable div dir=3D ltr div class =3D gmail_default style=3D font-family:georgia,= serif;font-size:small Dear colleagues, / div div class =3D gmail_default s= tyle=3D font-family:georgia,serif;font-size:small br / div div ...

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• [sas-uploads] SAS Integration system resuming nominal operation
• Radiation Hardness
• Procedure

Since the light from galaxies represents the integrated contribution of its consitutient stars, then we can learn about stellar populations in galaxies by modelling their light by summing up individual stellar spectra for different kinds of stars. ... The data cover the wavelength range 3500 - 9000 angstroms. ... Retrieve Digital Stellar Spectra Click on the appropriate spectral type. ... Note that the designation V means main sequence, IV means subgiants, III means giants, I means supergiant. ...

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• Lecture V.
• Astronomy HyperText Book: Stellar Evolution

OptInt PmWiki : Pm Wiki / Access Keys . ... On Windows with Internet Explorer, press ALT + the access key. With Firefox, press SHIFT + ALT + the access key. ... Example: <a href="http://example.com" accesskey="x">Example</a> would create a link to example.com that could be triggered by clicking on the linked word "example" or using the access key Akey+x. That same action key link could be created in PmWiki markup by typing %accesskey="x"%[[http://example.com|Example]]%% , like this: Example . ...

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• OptInt PmWiki : Access Keys
• Bojan Nikolic -- Simple smoothing of astronomical images in FITS format
• Astrophysics Group Pulsars

. Strictly speaking, UNIX is not one single operating system, it is a family of operating systems. Different computer manufacturers produce their own versions of UNIX. Although these are mostly similar, there are small differences which can cause problems. The most obvious examples are the layout of the file system and the exact format of certain commands. History of the UNIX operating system . Modern variants of UNIX .

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• About the Concepts menu
• The Shell
• Description of different types of shell

When using a large number of Virtual Hosts, Apache may run out of available file descriptors (sometimes called file handles if each Virtual Host specifies different log files. ... Unix operating systems limit the number of file descriptors that may be used by a process; the limit is typically 64, and may usually be increased up to a large hard-limit. ... If you system falls into 1 or 2 (above), then increase the file descriptor limit before starting Apache, using a script like #!/bin/sh . ...

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• Apache IP-based Virtual Host Support

... every new catalog of objects has to be contained in the UNIX directory having the same name as the catalog of objects; . ... the programs for local operations (programs of low level) with the catalog of objects are also in the same directory; . brief characteristics and names of the programs and file with the description of the catalog are stored in the file cats_descr ; . ... All astronomical catalogs have a different format and list different observables. ...

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• Project
• Introduction
• Description of algorithm

... We can investigate projection of this distribution onto the celestial sphere in two ways: in terms of lines of constant SN frequencies per one square degree for all galaxies from the sample (Figure 36 ), and in terms of constant GW amplitudes at a given SN frequency per square degree (Figure 44 ). ... Figure 45: The sky distribution of the total supernova frequency from nearby galaxies in terms of lines of equal frequencies per square degree. ...

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• E-P transitions for different orbits
• Cosmic Rays and Evolution of Binary Systems
• The Scenario Machine: Operational Guide

... Tracking stations will be selected in accordance with the schedule issued daily by the General Operative Control Group (GOCG) in Lavochkin Association with the gaps in operations during spacecraft contact with the control stations (CS). ... Communication frequencies (carrier): high data rate information transmission downlink from the SRT ґ 15.000 GHz; uplink synchronization ґ 7.2075 GHz; downlink synchronization ґ 8.400 GHz. ...

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• Description of the RadioAstron project, english version
• MEMORANDUM
• Abstract

The project of the informational system creation on the problem of evolution of radio galaxies, as a part of the "Big Trio" project aimed on studing of distant radio galaxies, is designed. This system allows a user to operate with simulated curves of spectral energy distributions (SED) to estimate ages and redshifts by photometry data. Authors use SEDs of several models for different types of galaxies. ... The HTTP and e-mail access is organized to this system. ...

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... Several CCD suppliers specify their devices without taking into account the effects of dark current and temperature. ... The influence of dark current is becoming more important, especially with larger integration or storage times at elevated temperatures. ... The temperature will influence the dynamic range through dark current, shot noise on the dark current and temporal noise of the output amplifier. ... Increasing the integration time automatically increases the dark current. ...

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• Alternative construction
• The 7C(G) survey
• Table File System

... The launch objective is to support further in-orbit operation of the International Space Station (ISS) in accordance with the commitments undertaken by the Russian side under the ISS Project. The main mission of the space vehicle is to deliver to the Space Station different cargoes making up about 2.6 tons by weight and needed to continue the ISS flight in a manned mode and provide proper living and working conditions for the crew. ... The station is ready to be docked with the space vehicle. ...

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• S.P.Korolev RSC Energia
• S.P.Korolev RSC Energia - LAND LAUNCH SYSTEM
• RSC "Energia" - Land Launch

Results from a series of long-term numerical integrations of orbits centred on that of C/1995 O1 (Hale-Bopp) are presented. Initially, 33 orbits taken from various sources were integrated in realistic models of the solar system for various time-scales about the present in the range (-3, +2) Myr and analyzed to assess the probability of different dynamical outcomes, such as a sungrazing state or the number of orbits since it was captured from a long-period orbit in the Oort cloud. ...

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• Observations with the Faulkes Telescopes
• Influence of Climate Variables on Tree-Ring Widths of Different Species
• Floppies