Class DitherProduct

Overrides: Pattern.__init__

Close image handle for each member.

Overrides: Pattern.closeHandle

Create Exposure object for meta-chip product after applying distortion model to input members.

Overrides: Pattern.buildProduct

(inherited documentation)

Apply any shifts read in from the ASN table /shiftfile to the WCS of each input's product.

In the case there are no shifts to apply, copy the product WCS into WCSLIN as the default case.

This method should (eventually?) support updating the shifts without starting from the beginning with these datasets, similar to the 'resetPars' functionality.

Overrides: Pattern.applyAsnShifts

This method will rely on final product's 'rd2xy' method to compute offsets between the different input chips.

Overrides: Pattern.computeOffsets

Add up the exposure time for all the members in the pattern, since 'drizzle' doesn't have the necessary information to correctly set this itself.

Overrides: Pattern.getExptime

For each entry in prodlist, append the appropriate type of Observation to the members list.

If it's a moving target observation apply the wcs of the first observation to all other observations.

Overrides: Pattern.addMembers

Return the class instance for the member with name memname.

Overrides: Pattern.getMember

Returns a dictionary with one key for each member. The value for each key is a list of all the extension/chip names that make up each member. Output: {member1:[extname1,extname2,...],...}

Overrides: Pattern.getMemberNames

This method would build a list of parameters to run 'drizzle'
one a single input image.
   The reference image info 'ref' will be passed as a SkyField object.
   The default output reference frame will be passed as 'def_wcs'
   for comparison to the user's selected object 'ref'.

Overrides: Pattern.buildPars

(inherited documentation)

This method combines the results of the member's buildMetachip() methods into a composite WCS. (DitherProduct method)

Overrides: Pattern.buildMetachip