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Instrument Neutral Distributed Interface
Instrument Neutral Distributed Interface (INDI) is a distributed control system (DCS) protocol to enable control, data acquisition and exchange among hardware devices and software front ends, emphasizing astronomical instrumentation. Introduction Elwood Downey started the INDI Protocol initiative in 2003 to develop a platform and client independent control protocol. INDI is a simple protocol modeled on Extensible Markup Language (XML), described for interactive and automated remote control of diverse instruments. It is small, easy to parse, and stateless. In the INDI paradigm, each ''Device'' poses all command and status functions in terms of setting and getting ''Properties''. Each Property is a vector of one or more named members, and has a current value vector; a target value vector; provides information about how it should be sequenced with respect to other Properties to accomplish one coordinated unit of observation; and provides hints as to how it might be displayed for inte ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Elwood Downey
Elwood may refer to any one of the following:: Places ;In Australia *Elwood, Victoria ;In the United States of America * Elwood, Illinois * Elwood, Indiana *Elwood, Kansas *Elwood, Missouri * Elwood, Nebraska * Elwood-Magnolia, New Jersey * Elwood, New York *Elwood, Utah People ;First name *Elwood Barker (1878–1953), American politician *Elwood Richard Quesada, American Air Force general *Elwood Wherry, American Presbyterian missionary ;Surname * Augustus R. Elwood (1819–1881), American politician *Brian Elwood (born 1933), New Zealand public servant * Edwin L. Elwood (1847–1907), American soldier * Eric Elwood (born 1969), Irish rugby union player *James Elwood (c. 1921–2021), British physician *Jimmy Elwood (1901–1936), Irish footballer *Joey Elwood, one of the founders of Gotee Records * Paul Elwood (born 1958), American composer and banjo player *Roger Elwood (1943–2007), American science fiction writer *Sheri Elwood, Canadian screenwriter * Thomas Elwood (disambig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Planetarium Software
Planetarium software is application software that allows a user to simulate the celestial sphere at any time of day, especially at night, on a computer. Such applications can be as rudimentary as displaying a star chart or sky map for a specific time and location, or as complex as rendering photorealistic views of the sky. While some planetarium software is meant to be used exclusively on a personal computer, some applications can be used to interface with and control telescopes or planetarium projectors. Optional features may include inserting the orbital elements of comets and other newly discovered bodies for display. Comparison of planetarium software See also *Space flight simulation game **List of space flight simulation games *List of observatory software See also *Space flight simulation game **List of space flight simulation games *Planetarium software Astronomy software, * Lists of software, observatory software ... References Educational software Enterta ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Space Flight Simulation Games
This is a sourced index of commercial, indie and freeware space flight simulation games. The list is categorized into four sections: space flight simulators, space flight simulators with an added element of combat, space combat simulators with an added element of trading, and unreleased space flight simulators. A space flight simulator game is software that allows the operator to experience spacecraft space flight in outer space with the added elements of gameplay. There are many different types of simulators. These simulators range in purpose from pure simulation to sheer entertainment. Space flight occurs beyond the Earth's atmosphere, and space flight simulators feature the ability to roll, pitch, and yaw. Space flight simulators use flight dynamics in a free environment; this free environment lets the spacecraft move within the three-dimensional coordinate system or the x, y, and z (applicate) axis. :See Lists of video games for related lists. Space flight simulation ga ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Space Flight Simulation Game
A space flight simulation is a genre of flight simulator video games that lets players experience space flight to varying degrees of realism. Common mechanics include space exploration, space trade and space combat. Overview Some games in the genre aim to recreate a realistic portrayal of space flight, involving the calculation of orbits within a more complete physics simulation than pseudo space flight simulators. Others focus on gameplay rather than simulating space flight in all its facets. The realism of the latter games is limited to what the game designer deems to be appropriate for the gameplay, instead of focusing on the realism of moving the spacecraft in space. Some "flight models" use a physics system based on Newtonian physics, but these are usually limited to maneuvering the craft in its direct environment, and do not take into consideration the orbital calculations that would make such a game a simulator. Many of the pseudo simulators feature faster than light tr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of TCP And UDP Port Numbers
This is a list of TCP and UDP port numbers used by protocols for operation of network applications. The Transmission Control Protocol (TCP) and the User Datagram Protocol (UDP) only need one port for duplex, bidirectional traffic. They usually use port numbers that match the services of the corresponding TCP or UDP implementation, if they exist. The Internet Assigned Numbers Authority (IANA) is responsible for maintaining the official assignments of port numbers for specific uses. However, many unofficial uses of both well-known and registered port numbers occur in practice. Similarly, many of the official assignments refer to protocols that were never or are no longer in common use. This article lists port numbers and their associated protocols that have experienced significant uptake. Table legend Well-known ports The port numbers in the range from 0 to 1023 (0 to 210 − 1) are the ''well-known ports'' or ''system ports''. They are used by system processes that provide w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
User Datagram Protocol
In computer networking, the User Datagram Protocol (UDP) is one of the core communication protocols of the Internet protocol suite used to send messages (transported as datagrams in packets) to other hosts on an Internet Protocol (IP) network. Within an IP network, UDP does not require prior communication to set up communication channels or data paths. UDP uses a simple connectionless communication model with a minimum of protocol mechanisms. UDP provides checksums for data integrity, and port numbers for addressing different functions at the source and destination of the datagram. It has no handshaking dialogues, and thus exposes the user's program to any unreliability of the underlying network; there is no guarantee of delivery, ordering, or duplicate protection. If error-correction facilities are needed at the network interface level, an application may instead use Transmission Control Protocol (TCP) or Stream Control Transmission Protocol (SCTP) which are designed for this ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Transmission Control Protocol
The Transmission Control Protocol (TCP) is one of the main protocols of the Internet protocol suite. It originated in the initial network implementation in which it complemented the Internet Protocol (IP). Therefore, the entire suite is commonly referred to as TCP/IP. TCP provides reliable, ordered, and error-checked delivery of a stream of octets (bytes) between applications running on hosts communicating via an IP network. Major internet applications such as the World Wide Web, email, remote administration, and file transfer rely on TCP, which is part of the Transport Layer of the TCP/IP suite. SSL/TLS often runs on top of TCP. TCP is connection-oriented, and a connection between client and server is established before data can be sent. The server must be listening (passive open) for connection requests from clients before a connection is established. Three-way handshake (active open), retransmission, and error detection adds to reliability but lengthens latency. Applica ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Internet Assigned Numbers Authority
The Internet Assigned Numbers Authority (IANA) is a standards organization that oversees global IP address allocation, autonomous system number allocation, root zone management in the Domain Name System (DNS), media types, and other Internet Protocol-related symbols and Internet numbers. Currently it is a function of ICANN, a nonprofit private American corporation established in 1998 primarily for this purpose under a United States Department of Commerce contract. ICANN managed IANA directly from 1998 through 2016, when it was transferred to Public Technical Identifiers (PTI), an affiliate of ICANN that operates IANA today. Before it, IANA was administered principally by Jon Postel at the Information Sciences Institute (ISI) of the University of Southern California (USC) situated at Marina Del Rey (Los Angeles), under a contract USC/ISI had with the United States Department of Defense. In addition, five regional Internet registries delegate number resources to their custo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Indi Server
Indi may refer to: *Mag-indi language *Division of Indi, an electoral division in the Australian House of Representatives *Indi, Karnataka, a town in the state of Karnataka, India *Instrument Neutral Distributed Interface, a distributed control system with particular focus in astronomical instrumentation * Parish of Indi, New South Wales See also *Indie (other) *Indy (other) {{disambiguation, geo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
XEphem
XEphem is a Motif based ephemeris and planetarium program for Unix-like operating systems developed by Elwood C. Downey. History XEphem started as a Unix and Motif conversion of the IBM PC-based '. It was initially released in December 1993 with version 2.5. Its commercial edition was discontinued in 2016; the free version continued to be offered as proprietary software. In 2021, however, Downey relicensed XEphem's source code under the MIT License, raising the release version from 3.7.7 to 4.0.0 to highlight the change. Algorithms and models XEphem uses * The VSOP87D planetary theory (full and reduced precision) for Solar System ephemeris, * Approximation to DE200 for the outer planets and Pluto, and * Formulae from J. Meeus (1982) for Jovian and Saturnian natural satellites * Model by the Bureau des Longitudes for Martian and Uranian natural satellites and includes * About 452 million stars from both the Tycho-2 Catalogue and a magnitude limited subset of the Guide St ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
KStars
KStars is a freely licensed planetarium program using the KDE Platform. It is available for Linux, BSD, macOS, and Microsoft Windows. A light version of KStars is available for Android devices. It provides an accurate graphical representation of the night sky, from any location on Earth, at any date and time. The display includes up to 100 million stars (with additional addons), 13,000 deep sky objects, constellations from different cultures, all 8 planets, the Sun and Moon, and thousands of comets, asteroids, satellites, and supernovae. It has features to appeal to users of all levels, from informative hypertext articles about astronomy, to robust control of telescopes and CCD cameras, and logging of observations of specific objects. KStars supports adjustable simulation speeds in order to view phenomena that happen over long timescales. For astronomical calculations, Astrocalculator can be used to predict conjunctions, lunar eclipses, and perform many common astronomical calcu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
