Stellar Aberration 2D
written by
Todd Timberlake
The Stellar Aberration 2D Model illustrates the phenomenon known as the aberration of starlight, first reported by James Bradley in 1729. Aberration occurs because light has a finite speed, and thus light from a star takes a finite amount of time to travel through the tube of a telescope. During this time, the telescope moves as a result of Earth's rotational and orbital motions (in this case, the orbital motion is more important because it is faster). Therefore, if the telescope is pointed directly at the star the starlight will hit the sides of the tube before reaching the eyepiece. To see the star the telescope must be pointed forward (i.e. in the direction of Earth's motion) very slightly.
The simulation shows a telescope (depicted as a red rectangle) and a star (white point) directly overhead. When the simulation is run a pulse of light is emitted from the star and travels straight downward to Earth. The telescope moves to the right due to Earth's motion. As a result, if the telescope is pointed straight up (ie toward the actual location of the star) the pulse of light will not reach the bottom of the telescope. Controls allow the user to set the speed of Earth and the tilt of the telescope. The user can modify the tilt until the starlight reaches the bottom of the telescope. Alternately, the user can use the Options menu to set the telescope to the correct tilt for the current speed setting. Please note that this resource requires at least version 1.5 of Java (JRE).
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Record Link
<a href="https://www.compadre.org/portal/items/detail.cfm?ID=11205">Timberlake, Todd. "Stellar Aberration 2D."</a>
AIP Format
T. Timberlake, Computer Program STELLAR ABERRATION 2D (2011), WWW Document, (https://www.compadre.org/Repository/document/ServeFile.cfm?ID=11205&DocID=2248).
AJP/PRST-PER
T. Timberlake, Computer Program STELLAR ABERRATION 2D (2011), <https://www.compadre.org/Repository/document/ServeFile.cfm?ID=11205&DocID=2248>.
APA Format
Timberlake, T. (2011). Stellar Aberration 2D [Computer software]. Retrieved November 2, 2024, from https://www.compadre.org/Repository/document/ServeFile.cfm?ID=11205&DocID=2248
Chicago Format
Timberlake, Todd. "Stellar Aberration 2D." https://www.compadre.org/Repository/document/ServeFile.cfm?ID=11205&DocID=2248 (accessed 2 November 2024).
MLA Format
Timberlake, Todd. Stellar Aberration 2D. Computer software. 2011. Java (JRE) 1.5. 2 Nov. 2024 <https://www.compadre.org/Repository/document/ServeFile.cfm?ID=11205&DocID=2248>.
BibTeX Export Format
@misc{
Author = "Todd Timberlake",
Title = {Stellar Aberration 2D},
Month = {May},
Year = {2011}
}
Refer Export Format
%A Todd Timberlake %T Stellar Aberration 2D %D May 17, 2011 %U https://www.compadre.org/Repository/document/ServeFile.cfm?ID=11205&DocID=2248 %O application/java
EndNote Export Format
%0 Computer Program %A Timberlake, Todd %D May 17, 2011 %T Stellar Aberration 2D %8 May 17, 2011 %U https://www.compadre.org/Repository/document/ServeFile.cfm?ID=11205&DocID=2248 Disclaimer: ComPADRE offers citation styles as a guide only. We cannot offer interpretations about citations as this is an automated procedure. Please refer to the style manuals in the Citation Source Information area for clarifications.
Citation Source Information
The AIP Style presented is based on information from the AIP Style Manual. The APA Style presented is based on information from APA Style.org: Electronic References. The Chicago Style presented is based on information from Examples of Chicago-Style Documentation. The MLA Style presented is based on information from the MLA FAQ. This resource is stored in 3 shared folders. You must login to access shared folders. Stellar Aberration 2D:
Is Based On
Easy Java Simulations Modeling and Authoring Tool
The Easy Java Simulations Modeling and Authoring Tool is needed to explore the computational model used in the Stellar Aberration 2D. relation by Wolfgang Christian
Is Part Of
Stellar Parallax and Aberration Package
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