Locating Your Star in an Image Using Astrometry.net and DS9
This lesson shows how to identify a target star in a specific image using the WCS coordinates provided by either Astrometry.net or SAOImageDS9.
Serving as the foundation for classical mechanics, Newton's laws of motion help mathematically describe countless processes that are crucial to astrometric projects.
Stellar Death Low Mass Stars
The evolutionary path of a star heavily depends on its mass; this video describes the unique death of stellar objects with lower mass.
The Main Sequence
The main sequence is defined by the HR diagram movement of a star fusing hydrogen into helium within its core, and understanding the relationship between the luminosity, temperature, radius and mass of stars on the main sequence allows us to derive useful information from a star's location on it.
Variable Stars and the HR Diagram
This lessons combines knowledge of the HR Diagram with previous concepts concerning the different classes of variable stars.
Using AIJ for Double Stars
AstroImageJ (AIJ) is the industry standard for measuring exoplanet transits as well as accurately measuring double stars, and has quickly become a core component of the astronomical sciences. This video is a guide and reference for anyone using AIJ for double stars measurements.
What is Time: HJD
Heliocentric Julian Date (HJD) is the Julian Date corrected for the differences in the Earth’s position relative to the center of the Sun.
Double Stars Overview
By determining the gravitational or mutual orbit of two stars using astrometry, it is possible to derive stellar mass and consequently contribute to and refine contemporary astrophysical theories and knowledge.
What is Time: JD
Julian Dates (JD) are a continuous count of days, and fractions of days, since noon Universal Time on January 1, 4713 BC (on the Julian calendar)
What is an Epoch
An epoch is a particular time period, point in history, or a moment defined by a particular event, and is a moment of time used as a reference point for a time-varying astronomical quantity.
The result of countless different cultures naming the same stars, inconsistent star names have necessitated the need for a dependable and systematic method of stellar nomenclature based on the brightness of stars within any given constellation.
Locating your star in an image – Variable Stars and Exoplanets
This tutorial covers how to identify your target stars and the cardinal points, so you can place North and East in your images using MiraPro.
Parsecs and Light Years
Parsecs and light years are common measurements of distance to celestial objects, and the former is especially significant for its importance to scientific writing and its relationship with parallax.
Kepler's laws of planetary motion are: the orbits of the planets are ellipses with the sun at one focus, a line from a planet to the sun sweeps over equal areas in equal intervals of time, and a planet’s orbital period (P) squared is proportional to its average distance from the sun (a) cubed
Stellar Populations I, II, III
The three population (pop) classifications categorize stars based on how much metal is contained within them, and this concept of "pop" stars is sometimes crucial to research.
HR Diagram Overview
The HR Diagram is a stellar plot of Luminosity vs. Temperature, and can help to understand where in its "life cycle" a star is
EM Radiation Overview
The electromagnetic spectrum describes light, and all objects above 0 Kelvin emit light.
WCS Coordinates With Astrometry.Net
Astrometry.net is a highly effective tool that analyzes astronomical images and can determine the WCS coordinates of the image as well as details of the known celestial objects contained within it.
A measure of movement towards or away from the observer, radial velocity is just one component of stellar motion that is derived through measurement of the doppler effect.
Astrometry is the area that deals with the positions and motions of celestial objects. It has two main scientific...