![]() ![]() Indeed, ultra-walls are often driven by clusters of computers (the abovementioned WILD platform uses 32+1 graphics processing units in 16+1 computers) and involve heterogeneous input devices, which causes problems of data sharing, graphics rendering, and handling multiple user input channels. We also explain how we addressed related technical challenges. We explain how we enable astronomers to perform these operations using interaction techniques that were designed specifically for wall displays, using direct manipulation and gestures performed on the wall’s surface or on handheld tablets: adjusting the scale and color mapping used to render the raw, high-dynamic-range FITS data overlaying and manually compositing multiple bands measuring the brightness and colors of astronomical sources, displaying their light curve making queries and adjusting object filters. The very high pixel density of wall displays means that detailed information can be shown for multiple sources simultaneously, including multiple measurements as well as research articles retrieved dynamically through links found in relevant databases. Additionally, FITS-OW lets astronomers query databases such as SIMBAD 8 servers, and visualize the results of such queries in-place, right next to the corresponding source in the image. They can pan and zoom in images that are several hundred thousand pixels in both width and height, overlay the results of data analyses, fetch and display additional images of a specific object or region in the sky, showing observations in different ranges of the electromagnetic spectrum or made at different times. 5– 7 In this paper, we introduce FITS-OW, an application that enables astronomers to visualize and interact with very large FITS images and collections thereof. Wall displays also offer good support for collaborative work, enabling multiple users to simultaneously visualize and interact with the displayed data. They can represent the data with a high level of detail while at the same time retaining context: users can transition from an overview of the data to a detailed view simply by physically moving 4 in front of the display. Ultra-walls have properties that make them well-suited to the visualization of very large datasets. Other, even larger, platforms include Stallion 2 (328 megapixels) and the Reality Deck 3 (1,500 megapixels in an immersive configuration). For instance, WILD, the first wall display we set up in our laboratory, has a total resolution of 20480 × 6400 = 131 megapixels for a surface area of 5.5m × 1.8m. Using infrared color magnitudes relationship, we estimated theĭistances and K band absolute magnitudes of the new objects.Ultra-high-resolution wall-sized displays, also called ultra-walls 1 for short, feature a very high pixel density over a large physical surface. Medium resolution spectra confirm the C rich nature for both Report the recent discovery of two additional CH type stars (not previouslyĬatalogued), namely DFBS J075331.98+190344.3 and DFBS J111422.94+091442.7,ĭetected on the DFBS plates with help of the image analysis softwares (FITSViewĪnd SAOImage DS9). Submitted for publication in Astronomy ad Astrophysics. ![]() The Digitized First Byurakan Survey (DFBS) is given in a paper recently The first list of the faint high latitude C stars (FHLCs), found in Is a critical requirement for building up scenarios for early Galactic chemicalĮvolution. Moreover, accurate knowledge of the CH stellar population Information on the role of low to intermediate mass stars of the Halo in early Gigoyan and 3 other authors Download PDF Abstract: Carbon rich stars of Population II, such as CH giants, can provide direct (Research note, submitted to Astrophysics), by K. Download a PDF of the paper titled New Bright Carbon Stars Found In The DFBS.
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