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Specifications for Selection of FOC for Scrapbook


General goal: show FOC images in four bands: Far-UV, U, B, V; plus line and polarized filters.

F/96: Filter choice for all bands, in ranked order
  Far-UV U B V Line Polarized
1st choice F220W F342W F430W F480LP F501N POL0;POL60;POL120;F342W
2nd choice F140W F372M F410M F550M F486N  
3rd choice F175W F320W F437M F502M    
4th choice F170M F275W        
5th choice F130M F346M        

F/48: Filter choice for all bands, in ranked order
  Far-UV U B
1st choice F220W F275W F430W
2nd choice F150W F342W  

General Guidelines

Include everything with a preview which is non-proprietary. F/96 has priority of F/48 mode. When more than one image with the same filter is available, pick the one with the longest exposure time. If that includes more than one image, pick the most recent one. Only objects for which sci_operating_mode = "IMAGE" were selected.

Definition of individual pointing

The FOC includes two imaging modes, F/48 and F/96, the former with a maximum field of view (FOV) of 28"x28", the latter with a maximum FOV of 14"x14". The F/48 mode has been used only in ~ 9% of the observations. The size of the F/96 FOV ranges from 7"x7" (64%; 512X512 aperture) to 14"x14" (29%; 512X1024 aperture), while the size of the F/48 FOV ranges from 14"x14" (53%; 512X512 aperture) to 28"x28"" (46%; 512X1024 aperture).

The definition of individual pointing used in the scrapbook includes all observations in a circle with a radius of 3.5" centered on a given position. We note however that, given the small FOV, the overlap between observations is minimal.