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Edward Brown edited figures/fig_for_inclass_nova1/caption.tex
about 9 years ago
Commit id: 05ff45071acfd105cd5fb3678d4c9d6f8c89144f
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Figure supporting an in-class exercise on understanding image values and signal-to-noise, carried out during the lab period. The exercise itself consisted of the following exercise.
\begin{quote}
Consider the attached image of a nova observed with the millimeter telescope CARMA at 96 GHz (Panel A). Histograms of pixel values are shown in Panels B and C (Panel C is just a zoom-in of a region on Panel B); these are just like the histograms you made in DS9's
\verb|Scale Parameters|. \texttt{Scale Parameters}. The pixel values after calibration are expressed as flux density per pixel (units of mJy/pixel). The plotted range ($-2$ to $36\,\mathrm{mJy/pixel}$) includes all pixels in the image.
\begin{enumerate}
\item Estimate the average background value ($\bar{S}$) and explain your reasoning.