This directory contains Euclid ERO data for one of the following
fields:

Abell2390, Abell2764, Barnard30, Dorado, HolmbergII, Horsehead, IC10,
IC342, Messier78, NGC2403, NGC6254, NGC6397, NGC6744, NGC6822,
Perseus, Taurus

The complete set of Euclid ERO data for a given field is packaged
within 4 tar files. For convenience, we also provide a subdirectory
that expands the tar files' image content. 

In the tar file descriptions that follow, [FIELD] refers to one of the
field names above, and [FILTER] can be one of Y, J, or H.


1. Euclid-NISP-Catalog-ERO-[FIELD].DR3.tar.gz
   ------------------------------------------

   Summary: Source catalogs that have been generated from NISP images
   using SourceExtractor and PSFex (see Cuillandre et al 2024, section
   8). Please refer to the relevant software documentation for
   definition of the catalog files.

   Files in subdirectory: These files have not been expanded into the
   subdirectory.
   

2. Euclid-NISP-Stack-ERO-[FIELD].DR3.tar
   -------------------------------------

   Summary: The collection of image stacks from the NISP instrument.

   Files in subdirectory:

   Extended emission stack for each of Y, J, H
   Euclid-NISP-[FILTER]-ERO-[FIELD]-LSB.DR3.fits.gz

   Extended emission stack mask
   Euclid-NISP-Mask-ERO-[FIELD]-LSB.DR3.fits.gz

   Compact source stack for each of Y, J, H
   Euclid-NISP-[FILTER]-ERO-[FIELD]-Flattened.DR3.fits.gz

   Compact source stack weight map for each of Y, J, H
   Euclid-NISP-[FILTER]-ERO-[FIELD]-Flattened.DR3.weight.fits.gz

   Compact source stack detection image
   Euclid-NISP-Chi2-ERO-[FIELD]-Flattened.DR3.fits.gz  


3. Euclid-VIS-Catalog-ERO-[FIELD].DR3.tar.gz
   -----------------------------------------

   Summary: Source catalogs that have been generated from VIS images
   using SourceExtractor and PSFex (see Cuillandre et al 2024, section
   8). Please refer to the relevant software documentation for
   definition of the catalog files.

   Files in subdirectory: These files have not been expanded into the
   subdirectory.


4. Euclid-VIS-Stack-ERO-[FIELD].DR3.tar
   ------------------------------------

   Summary: The collection of image stacks from the VIS instrument.

   Files in subdirectory:

   Extended emission stack
   Euclid-VIS-ERO-[FIELD]-LSB.DR3.fits.gz    

   Extended emission stack mask 
   Euclid-VIS-Mask-ERO-[FIELD]-LSB.DR3.fits.gz  

   Compact source stack
   Euclid-VIS-ERO-[FIELD]-Flattened.DR3.fits.gz

   Compact source stack weight map
   Euclid-VIS-ERO-[FIELD]-Flattened.DR3.weight.fits.gz