... We describe a new library (AST) which provides a flexible high-level programming interface for handling world coordinate systems in astronomy and for producing graphical output. ... Relationships between coordinate systems are represented within AST by objects called Mappings. ... While Mappings represent the relationships between coordinate systems, the coordinate systems themselves are represented by objects called Frames. ... Like all objects, a Frame also provides methods. ...

... Representing Coordinate Systems (Frames) While Mappings represent the relationships between coordinate systems, the coordinate systems themselves are represented by objects called Frames. ... A Plot's base Frame corresponds with the native coordinates of the underlying graphics system. Plotting operations are specified, using AST Plot methods, in physical coordinates which correspond with the Plot's current Frame (typically this might be a celestial coordinate system). ...

The FITS "World Coordinate System" (WCS) standard defines keywords and usage that provide for the description of astronomical coordinate systems in a FITS image header. ... I: "Representations of world coordinates in FITS" , Greisen, E.W. & Calabretta, M.R. (2002), Astronomy & Astrophysics , 395 , 1061-1075. ... This diagram illustrating Bonne's projection with conformal latitude +35 was produced by WCSLIB , a C implementation of the coordinate transformations defined in the FITS WCS papers. ...

Diamond's Stealth 64 Video VRAM is the perfect choice for graphics and video performance. ... The Diamond Stealth 64 Video continues our award-winning tradition, delivering the best price / performance multimedia accelerators available. ... 64-bit graphics performance . ... Designed around a solid 64-bit graphics engine, the Stealth 64 Video VRAM provides unparalleled performance in any environment. ... The Stealth 64 Video VRAM includes hardware to accelerate video playback on the Windows desktop. ...

XmCCD ----- The programs provided here offer a Linux graphical user interface to astronomical and scientific CCD cameras. ... SBIG has provided the library used here. It is essentially the same library used by commercial software for control of their cameras under Windows. ... This distribution includes source code to utilize the Santa Barbara Instrument Group (SBIG) shared library libsbigudrv.so with a Motif-based graphical user interface program to control SBIG astronomical CCD cameras. ...

. An operating system is the program that controls all the other parts of a computer system - both the hardware and the software. Most importantly, it allows you to make use of the facilities provided by the system. Every computer has an operating system. The UNIX operating system has three important features; a kernel, the shell and a filesystem. The Kernel . The Shell . UNIX file system . More about the UNIX operating system .

Home About Meade Product Information Dealer Locator Customer Support Investor Relations Dealer Support Employment Opportunities Site Map . Meade Instruments Corporation . ... The Autostar/LX200 Command Set . ... The LX200 Command Set may be used to write custom software for remote operation of an LX200 telescope with a personal computer. ... The name Meade and the Meade logo may be used only with permission from Meade Instruments Corporation. ... Autostar Downloads . ... product information | ...

Cameras for TDI Applications Princeton Instruments offers several rectangular format cameras that are ideal for TDI applications, which require high resolution in one direction only. This allows for a lower cost system with the same high dynamic range and performance of square format imaging arrays. ... TDI Applications Imaging of conveyor belts is a common industrial application of TDI. ... Many non-destructive inspection applications require economical high resolution Xray imaging. ...

... Science . ... Science Users Information > Science Software . ... Science Software and Tools contains information on software to support astronomers during their observing run, as well as software for calibration, data reduction and analysis preparing Phase I proposals and Phase II Observing Block. Software tools to support astronomers during their observations can be found on the Science Operations pages of La Silla Paranal Observatory: La Silla Science Operations and Paranal Science Operations . ...

... Software requirements . ... Further considerations are required on Mac OS X in relation to X11 and Qt (see below). ... ds9 stable version 3.0.3 works fine with SAS 7.0.0 . ... We recommend the installation of HEASOFT version 6.0 (HEADAS), since SAS 7.0.0 was built with that version (except for Mac OS X where version 5.3 was used). Some SAS tasks require perl . ... To work with this release of SAS on any Mac OS X version, the X Windows software or X11 (a.k.a X11R6) for Mac Os X must be installed . ...

... This has two reasons: (i) the logarithmic potential has no escape velocity so that it is more difficult to represent the VP on a finite velocity array; and (ii) the VP becomes discontinuous in the limit beta --> -infinity (only circular orbits), and singular in the limit beta --> 1 (only radial orbits) (e.g., van der Marel Franx 1993). ... The Gauss-Hermite moments obtained with both approaches agree well, and with the results in van der Marel Franx. ... Roeland van der Marel, marel@stsci.edu . ...

... I would several points which we faced during our everysolved for better quality of individual ACs' and EOP products · There are two main EOP products provided by two IERS Product Centers on Earth Orientation (Earth Orientation Center (EOC) and Rapid Service/ Prediction Center (RSPC)). ... However, the latter is not provided by the IERS. ... ITRF · Using ITRF in computation of EOP series produced by various ACs seems to be a