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Specifications for Selection of FOC for Scrapbook
MISSION: FOC (HST)
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 | |
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.
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