Drizzlepac

====================

**Publicly Released through PyPI:** Jan 14, 2014

**Available under SSBX/IRAFX starting:** Jan 6, 2014

Bug fixes
^^^^^^^^^

- Files created or updated by ``drizzlepac``, ``fitsblender``,
or ``STWCS`` tasks, e.g. ``tweakreg`` or ``apply_headerlet``,
will now ensure that the ``NEXTEND`` keyword value correctly reflects the
number of extensions in the FITS file upon completion.

=======================

**Installed in OPUS:** Dec 11, 2013

**Available starting:** Oct 28, 2013

Bug fixes
^^^^^^^^^

- DQ arrays in input images now get updated with cosmic-ray masks
computed by ``astrodrizzle`` when run with the parameter ``in_memory=True``.
This restored the cosmic-ray masks detected during pipeline processing.

========================

**available starting:** Oct 21, 2013

- ``tweakreg`` can now be run in 'batch' mode. This allows the user to generate
plots and have them saved to disk automatically without stopping processing
and requiring any user input.

=======================

**available starting:** Sept 9, 2013

This version fixed a couple of bugs in ``astrodrizzle``; namely,

- Logic was updated to support pixfrac = 0.0 without crashing. Ths code will
now automatically reset the kernel to 'point' in that case.
- ``astrodrizzle`` now forcibly removes all OPUS WCS keywords from drizzle
product headers.

- Default rules for generating drizzle product headers (as used in the archive)
were modified to add definitions for 'float_one', 'int_one', 'zero' that
generate output values of 1.0, 1, and 0 (zero) respectively for use as
keyword values. This allows the LTM* rules to replace 'first' with
'float_one' so that the physical and image coordinates for drizzle
products are consistent.

Additionally, changes were made to ``STWCS`` for reprocessing use:

- Problems with using ``apply_headerlet_as_primary()`` from the ``STWCS``
package on WFPC2 data have been corrected in this revision.

=======================

**Available starting:** July 15, 2013

- AstroDrizzle now can process all STIS data without crashing.

=======================

**available starting:** May 6, 2013

- The output drizzle image header no longer contains references to D2IM arrays.
This allows ``tweakreg`` to work with drizzled images as input where 2-D D2IM
corrections were needed.

- Deprecated references to PyFITS .has_key() methods were also removed from
the entire package, making it compatible with PyFITS 3.2.x and later.