All About POTATOES
What are the diameters of our two large telescopes?
What are 16 and 20 inches?
Spectroscopy is the study of light that has been split into its component ______.
What is wavelength?
Photometry is the study of _____?
What is light?
what is the name of a plot comparing the temperature and luminosity of stars?
HR diagram
In the Alt/Az coordinate system, this is the name for the point straight overhead.
What is zenith?
What is spectroscopy?
This type of spectrum is produced when light from a continuous spectrum passes through a cloud of gas.
What is an absorption spectrum?
What tool is used by photometry to look at narrow ranges of wavelengths?
What are color filters?
what are the x and y axes of a HR diagram
temperature and luminosity
This is the name for the imaginary surface around us on which we project RA and Declination.
What is the celestial sphere?
What are the names of our astrophotography cameras?
What are the SeeStars?
We see this effect in the spectra of objects that are moving away from us.
What is redshift?
This type of camera, used on the 16-inch until a few days ago, measures how many photons are observed per pixel during an exposure.
What is a CCD?
in a stars classification (ex: G2 V) what do the number and letter G2 tell us about the star?
temperature
This is the angle around the horizon, usually from North.
What is azimuth?
Name the two kinds of data now taken by the 16-inch telescope.
What are photometry and polarimetry?
This type of spectral line is produced when an electron moves to a lower energy state (farther from the nucleus).
What are emission lines?
This color index, taken by subtracting a star's magnitudes in two specific wavelengths, corresponds to its temperature.
What is B-V color index?
in a star's classification (ex: G2 V) what does the roman numeral V tell us about the star?
luminosity
This is the unit of right ascension.
What are hours?
What does POTATOES stand for?
What is the Prescott Observing Team for Analyzing Telescopically Obtained Echelle Spectra?
This is the type of spectrograph grating used on the 20-inch telescope, coming from the French word for "ladder".
What is an echelle?
This type of frame, taken nightly on the 20-inch telescope, corrects for pixel variations.
What are flats / flat fields?
what letter corresponds to the hottest temperature class of stars?
O
This is the name for the type of math required to convert between different coordinate systems.
What is spherical trig?