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--- observation:data [2025/02/27 10:00] – etienne
+++ observation:data [2025/03/03 18:44] (current) – etienne
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 <html><font color="#ff0000" size="2.5"> Page in construction ; Last Update February 2025</font></html>
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 ==== Data products summary ====
-Currently, THEMIS provides 4 type of data products:
+Currently, THEMIS provides 4 types of level 1 data products :
   * Full-Sun guider images
-  * Broadband camera images
+  * Broadband images (BBI)
-  * Slit-jaw camera images
+  * Slit-jaw images
-  * MTR2 spectral cameras images (with or without polarimetry)
+  * MTR2 spectral images (with or without polarimetry)
+Theses images are the direct outputs of the different cameras that equip THEMIS at different point of the optical path.  Their production is detailed on the **[[technical:description|THEMIS technical information page]]**, with informations about the possible options available to the users.
-Their production is detailed on the [[technical:description|THEMIS technical information page]], with informations about the possible options available to the users.
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+Summary of THEMIS Level 1 data products, in polarimetric analysis mode. MTR2 spectral cameras permits simultaneous observations of different spectral bands (here Fe I @ 630,2 nm as an example). \\
+<html> <a href="https://www.themis.iac.es/lib/exe/fetch.php?media=results:gallery:schema:dataproducts_pola_level1.jpg"><img src="https://www.themis.iac.es/lib/exe/fetch.php?media=results:gallery:schema:dataproducts_pola_level1.jpg" style="width:90%; height: auto;"></a></html>
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 === Full-Sun guider images ===
-The full-Sun guider images are mainly to provide context to the observations. They correspond to photospheric observations. They are broadband images taken in the green continuum, around 540 nm. They are not meant for pure scientific analysis. Camera settings can be changed by the user in the control room
+The full-Sun guider images are mainly to provide context to the observations. They correspond to photospheric observations. They are broadband images taken in the green continuum, around 540 nm, with a bandpass of 10nm. They are not meant for pure scientific analysis. Images are provided as a .png files and have a size of 2000x3000 pixels².
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 === Broadband images (BBI) ===
-Natural image without AO, with AO, with AO and post-facto reconstruction
+The BBI camera offers a broadband high-resolution image with a square field-of-view of about ~55”x55“. Presently the images are taken with a broadband red filter, with a ~3nm passband centred around 656 nm. BBI images thus corresponds to visible-light red continuum images.
+The images are 2000 x 2000 pixels, hence with pixel resolution of about 0.0275"/pixel. They are primarily provided as .fits files.
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