... Using a simple 2-D Gaussian Point Spread Function (PSF) on a constant (flat) sky background, I derive a theoretical photometric and astrometric performance model for analytical and digital PSF-fitting stellar photometry. ... The photometric performance is maximized when either the effective background area or the effective-background-level measurement error is minimized. ... An important, but frequently ignored, noise source is the uncertainty of the measurement of the effective background level ( )...

The AstroGuide . ... AstroGuide | ... AstroGuide Listing . ... See many more Astronomy Listings by: Category or Alphabet . Software authors of "Quick Fringe" and "MaxImDL." Quick Fringe is an optical interferogram fringe analysis program. ... 613) 225-2732 . ... 613) 225-9688 . Web Site . ... Web . ... Unless otherwise specified, web site content Copyright 1994-2016 John Huggins All Rights Reserved . dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . are trademarks of John Huggins ...

... For many ATMs, having a good ray trace program on hand is pretty valuable. ... http://www.willbell.com . ... It is a slick Windows package with great graphics, but my most recent machine (Win95 OSR2) now encounters many error messages. ... OSLO LT : This is the freeware Windows version of OSLO - it is limited to 12 surfaces, but is otherwise amazing. ... KDP : This is another powerful, freeware Windows raytrace package. ... ZEMAX : This is yet another powerful, Windows raytrace package. ...

... HST . ... HST Overview . ... FGS Instrument Handbook . ... The interferometric response (in filter F583W) of the 3 original FGSs are shown in Chapter 2 of the FGS Instrument Handbook. ... For complete details on the interferometric response of FGS, please see the FGS Instrument Handbook . For other details on the FGS interferometric response, see Section 2.1.2 of the FGS Instrument Handbook. ... The HST Data Handbook is the primary guide for calibration, reduction and analysis of FGS data. ...

... 3.1 Candidate layouts .. ... 6.1.2 6.1.3 Conceptual design of thermal control .. ... Reasons for choosing preferred layout(s) Page 5 of 6 3.2 Preferred layouts 3.2.1 Error budgets and sensitivities 3.2.2 Feasibility 3.2.3 Comparison of costs 4 4.1 4.2 Camera Selection Candidate cameras Camera evaluation 5 5.1 5.2 5.3 5.4 5.5 Conceptual Opto-Mechanical Design Layout Mechanical analyses Base-plate design Optical mount design Camera mount 6 Conceptual Thermal Design FTT-NAS ...

... 400mm f/2.8 Nikor lens: images the sky on the entrance slit. ... The optical system maintains image quality along the slit length so that each row of the image is a spectrum of that spatially selected region of the sky. 180mm f/2.8 Nikor lens: collimates the light from the slit. ... The auxiliary optical platform on WISPI now accomodates a short focal lens and a guiding/imaging video system that may use sub-pixel corrections to provide feedback to the tracking drive motors. ...

The ALMA Development Plan Leonardo Testi ESO ALMA Programme Scientist The ALMA Development Plan, Sydney, 6 Feb 2012 1 ALMA beyond ALMA ALMA will allow transformational science thanks to the sensitivity, angular resolution, spectral coverage and image fidelity, but.. ... The ALMA Development Plan, Sydney, 6 Feb 2012 Leonardo Testi: ALMA, Firenze 24 Gennaio 2012! ...

... Annual Meeting . ... Other Workshops, Conferences and Events . ... Galileo Teacher Training Program Workshop . ... Submit an abstract (please read guidelines below first). ... Please fill out the abstract form carefully since the program committee will be rating the proposals based only on the information you provide. ... For the conference, you may be the lead author on one poster paper, and one oral session: a ten-minute oral paper presentation or an hour-long workshop or a special interest group....

... Image Area Store Area 240x120 24µm Gain Registers OP 8 Gain Registers Store Area OP 7 240x120 24µm Gain Registers OP 6 OP 1 OP 5 16 July 2008 Javier Reyes The design challenges des ges · Very fast read-out speed: up to 1500 fps speed: up to · Very low read-out noise. read-out ­ Effective ... · Very stable high-voltage clocks high-voltage · Low power consumption power consumption · Reduce volume: 19 x 23.5 x 7.5 cm 16 July 2008 Javier ...

... GCN 8471 | ... TITLE: GCN CIRCULAR NUMBER: 8516 SUBJECT: GRB 081102: MASTER refind and final results DATE: 08/11/11 15:50:10 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs E. Gorbovskoy, V. Lipunov, V.Kornilov, A.Belinski, N.Shatskiy, N.Tyurina, D.Kuvshinov, P.Balanutsa Sternberg Astronomical Institute, Moscow State University A. Tlatov, A.Parkhomenko Kislovodsk Solar Station of the Pulkovo Observatory V.Krushinski, I.Zalognikh Ural State GCN Circ 8470, Lipunov et al., ...

... Russian KOI8 . Scientists of Laboratory of radio astrophysics develop algorithms and software. ... design of statistical estimations methods of average and smoothing; . fitting algorithms design; . development of the data processing system FADPS (Flexible Astronomical Data Processing System); . design of visualisating and interactive data reduction programs for initial observational data ( fgr (Russian KOI-8) ) and continuum radio sources spectra (spg); . ...

... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2011 April 18 . Visual Effects: Wonders of the Universe . ... Explanation: What visual effects are depicted in this video? ... Please help create a companion explanation for the video by contributing to APOD's discussion page . ... About APOD | ...

... Visual Effects: Wonders of the Universe . ... Music Score: Timo Baker Explanation: What visual effects are depicted in this video? The effects were created by BDH for the BBC television show Wonders of the Universe , but are unlabeled on the above version posted to Vimeo . ... Past that, the entire computer animated video seems to sparkle with unknown stars, unknown planets, and sequences where unknown gas is flowing toward unknown places. ... NASA Web Site Statements, Warnings, and Disclaimers . ...

Symbolic circuit-matrix processor and evaluator . ... This software is reliable over the range of benchmark circuit complexity (both *.CIR and *.MAT file). ... SYMBOL is a symbolic-algebra package which in contrast to REDUCE, MACSYMA, MAPLE, MATHEMATICA, MathLAB, MathCAD and other known multi-purpose systems is especially intended for analysis of any lumped, linear, time-invariant circuit. ... pure ASCII text . ... CIRSYM - SYMbolic CIRcuit processor used to format ASCII text file *.out for CALCSYM. ...

... 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 . ...

Catalog of Vertex Final Documentation and Siemens Manuals DRAFT 8-25-00 hagen/wpfiles/vertexfinaldoc.wp6 Preliminary documentation 1. ... Volume IV.1 Sect Sect Sect Sect Sect Sect Sect Sect Sect Sect Sect Sect Sect Sect Sect Sect Sect Volume IV.2 Sect Sect Sect Sect Sect Sect Ve ion ion ion ion ion ion ion ion ion ion ion ion ion ion ion ion ... Volume V.1 Software Documentation - PLC Software Rev.2.0 Dec. ...

... Archives . ... Summer School in Statistics for Astronomers VI . June 7-12, 2010 . ... The sixth annual Penn State Summer School in Statistics for Astronomers will be held at Penn State. The main part of the School is a 6-day course (June 7-12, 2010) in fundamental statistical inference designed to provide researchers and graduate students in the physical sciences with a strong conceptual foundation in modern statistics. ... Tags: 2010 , AstroStat , June 2010 , Penn State , summer school . ...

... The NICMOS Parallel Program . Analysis . ... NICMOS observations made in parallel with the other HST instruments have produced an archive of over 2,000 images, covering a wide range of Galactic latitudes. ... The maximum sensitivity of these images is approximately 0.1 Jy, which should allow the detection of such astrophysically interesting sources as brown dwarfs in the solar neighborhood and star-forming galaxies out to z 3. ...

... Science . ... The Local Sphere of Influence (LSI) survey is a deep near-IR (H-band) survey of galaxies residing in the Local Sphere of Influence ( D < 10 Mpc). The images with a typical surface brightness limit 4 mag fainter than 2MASS (24.5 mag arcsec -2 < SB lim < 26 mag arcsec -2 ) have been obtained with IRIS2 on the 3.9~m Anglo-Australian Telescope. 11 of the observations have resulted in non-dections or the images were saturated by foreground stars. ... Copyright 2007 Emma Kirby. ...

... Unlike clients such as Shout and IceDJ this permits the broadcast of live audio, rather than prerecorded mp3's. LiveIce was developed after the appearance of IceCast to provide the Real Time streaming functionality which makes it a viable solution for broadcasting. It is based on the guts of 2 of my previous works - Mp3Serv, the first mp3 broadcasting system & Mp3Mixer, a toy which allows the user to 'Mix' with mp3 streams. ... LiveIce XMMS sourcecode is available here . ...