Rewrite the Introduction of the instrument paper. - #2
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…instrument paper.
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| The light emitted by the solar \TR\ and corona varies significantly as a function | ||
| of position, wavelength, and time. |
kankelborg
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Oct 19, 2023
| $\lambda$ is wavelength, and $t$ is time. | ||
| The ideal solar imaging spectrograph would capture $I(x, y, \lambda, t)$ with high resolution in $x$, $y$, $\lambda$, | ||
| and $t$ \textit{and} over a wide \FOV\, wavelength range, and time period. | ||
| Of course, the temporal dimension is privileged, so we often reduce the problem to capturing a 3D spatial/spectral |
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privileged: This makes no sense to me.
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| Approaching this ideal is the fast tunable filtergraph (\ie\ fast tunable Fabry--P\'erot etalons, \eg\ the GREGOR | ||
| Fabry--P{\'e}rot Interferometer, \citep{Puschmann12}), but the materials do not exist to extend this technology to | ||
| \EUV\ wavelengths shortward of $\sim$\SI{150}{\nano\meter}~\citep{2000WuelserFP}. |
kankelborg
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| and $t$ \textit{and} over a wide \FOV\, wavelength range, and time period. | ||
| Of course, the temporal dimension is privileged, so we often reduce the problem to capturing a 3D spatial/spectral | ||
| cube at a particular time $t_0$: $I(x, y, \lambda, t_0)$. | ||
| Since we use 2D detectors, this means that we must find a way to flatten the 3D cube into two dimensions |
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...we use 2D detectors to capture an exposure at some time
Instead of "the 3D cube...without losing information", how about "the remaining three dimensions
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The ported introduction descended from the manuscript included as a chapter of Hans Courrier's dissertation, and 44% of its words sat inside runs of eight or more consecutive words identical to it, so it could not be published as written. The rewrite adopts the framing begun in Kankelborg-Group/ESIS#2: the Sun gives us a 3D spatial/spectral cube which has to be flattened onto a 2D detector without losing information, and each family of instruments is a different way of doing the flattening. Multiplexing in time covers tunable filters, imagers, and rastering slit spectrographs; dividing the detector covers integral field spectrographs; and superimposing and inverting covers slitless spectrographs, which leads to MOSES and then to ESIS. Cites Courrier's dissertation for the earlier form of the design and notes that the instrument which flew differs from it, most importantly in the removal of the primary mask. No run of eight or more words is now shared with the dissertation, and the longest run of any length is five. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01BYjDL98znSud1yFh9chnkP
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