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WFC3 and Association Structure

WFC3 and Association Structure. Ed Hopkins . WFC3 and ACS associations. They are the same! Unless we are explicitly told otherwise These are 100% reused slides!. WFC3 Associations: general considerations. There will be an association table and multiple exposure and product datasets

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WFC3 and Association Structure

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  1. WFC3 and Association Structure Ed Hopkins WFC3 PDR

  2. WFC3 and ACS associations • They are the same! • Unless we are explicitly told otherwise • These are 100% reused slides! WFC3 PDR

  3. WFC3 Associations: general considerations • There will be an association table and multiple exposure and product datasets • Each product or sub product and each exposure is in a separate dataset • There can be from 1 to 19 products (0-9 and A-I) • The product ending in “0” is always the dither product • There can only be 18 “pointings” in a ditther • There will be two kinds of products: sub products and main or dither products • Sub-products are made from sets of repeat-obs or cr-split exposures • In these cases the subproduct will always end in “1” • There will be no dataset with the same name as the association • Dither products are made from sub-products or exposures WFC3 PDR

  4. WFC3 Associations: one level WFC3 PDR

  5. WFC3 Associations: two levels WFC3 PDR

  6. WFC3 Associations: two levels: comments • This could be a picture of several cr-splits and a dither/main product • This could be a picture of several repeat obs and a dither/main product WFC3 PDR

  7. WFC3 Associations: when exposures are missing • WFC3 will always produce a sub product or dither product if it has anything to work with • If it has at least one exposure for that product or sub product it will produce a product WFC3 PDR

  8. Dither products • If WFC3 is not ready to produce real dither products, it will produce dummy dither products. • These dummys are the entries that go in the science table • They representing the exposures the dither product would have been built from WFC3 PDR

  9. Mosaics • Mosaics are not associated • These could be produced in the future by the OTFR system • If the correct groupings were “manually” put in the archive database tables WFC3 PDR

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