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--- observation:data [2025/02/26 12:18] – 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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 ==== Data products examples ====
 === 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, 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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