as·trom·e·try
Astrometry is the branch of astronomy concerned with the determination of positions, proper motions, and parallaxes of solar-system bodies, stars, and distant galaxies. Astronomers at USNO use the latest instrumentation and methods to extend the accuracy and brightness limits of astrometric catalogs and reference frames. Astrometry is the process of determining positions of objects in your field. Modern CCD images and analysis software are able to produce positions accurate to better than one arcsecond when suitable catalogs of comparison objects are used.
(ə-strŏm′ĭ-trē)n.astrometry
(əˈstrɒmɪtrɪ)
n
as·trom·e·try
(ə-strŏm′ĭ-trē)Astrometry Method
astrometry
| Noun | 1. | astrometry - the branch of astronomy that deals with the measurement of the position and motion of celestial bodies astronomy, uranology - the branch of physics that studies celestial bodies and the universe as a whole |
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Astrometry Plate Solve
Link to this page:Astrometry Definition
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Welcome to the web site for the PinPoint Astrometric Engine, a programmable engine that provides sensitive, robust, high-speed research-grade astrometric image processing for FITS files from any camera. A set of point-and-click tools (Visual PinPoint) for fast mass plate solving and survey-level asteroid and supernova hunting are included.
PinPoint 6 has built-in all-sky plate solving, eliminating the requirement for approximate image centerpoint coordinates and plate scale at the cost of additional time. An internet connection is usually employed for this (see below). PinPoint automatically uses the cloud solving service of Astrometry.Net to find its initial solution, then it takes that as the starting point for a full PinPoint solution including distortion mapping. If you don't have an internet cdonnection, PinPoint can use the 'ansvr' local all-sky server by Andy Galasso. This is all automatic to you and to client programs that embed the engine.
Typical uses include plate solving which gives precise pointing to telescope mounts, asteroid and comet searching, high-precision astrometry (detection and measurement of positions), and supernova hunting. The package comes with Visual PinPoint, a point-and-click Windows program that has automated tools for hands-off asteroid and supernova hunting with optional blinking for validation. You can use Visual PinPoint with any FITS or POSS/DSS images.
PinPoint is used as the plate solving engine in many astronomy applications out there, including Diffraction Limited's MaxIm DL 6 and MaxPoint, CCDWare's FocusMax and PoleAlignMax, MainSequence's Sequence Generator Pro, Omega Labs Ricerca 7, CCDWare's CCD Autopilot, and of course our own ACP Observatory Control Software.
Concerned about:
Astrometry Exoplanet
- Accuracy? (as good as it gets)
- Speed? (faster than anything else out there)
- Sensitivity? (as good as it gets)
- False matching? (an issue with other automated programs!)
Copyright © 2004-2017, Robert B. Denny, Mesa, AZ.