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Hubble Space Telescope
What's New for Cycle 18 Phase II

For Cycle 18, we have implemented the following changes to APT that may be helpful in preparing Phase II Programs:

  1. Multiple units for proper motion - Units for proper motion given in catalogs have changed over the years. APT now supports multiple units for proper motion.
  2. Phase II Mosaic tool - There is a capability for building mosaics in Phase II proposals. See the demonstration movie for more information.
  3. Bright Object Tool can use GALEX - The Bright Object Tool now can use the GALEX AIS (All Sky) catalog for checking the sensitive UV detectors: ACS/SBC, STIS FUV/NUV MAMAs, and COS.
  4. WFC3/IR "Death Star" shown in Aladin - The WFC3/IR detector has a circular area of bad pixels near the edge (nicknamed the "Death Star"). This isn't a big deal for a compact object, but could be important in planning an observation of an extended object or creating a mosaic. Aladin now plots a circle to highlight this region.
  5. New WFC3 Apertures - New subarray apertures have been defined as well as several new apertures which allow for common fiducial points between IR and UVIS.
  6. Actual orientation for executed visits used in Aladin - If APT has a connection to the visit status information (so you see that some visits have executed) the actual executed orientation will be used in the Aladin display.
  7. Differencing Tool - Although it is not a new capability, most people were unaware of the tool in APT which can highlight differences between two proposals (or two visits, or two exposures). There is a training movie about the Differencing Tool available.
  8. Context Sensitive Menus - APT has context sensitive editing menus in the Tree Editor. For instance you can right click on a target to find options like "New Fixed Target" and "Delete" (instead of looking for these options in the menus or remembering the shortcuts/hotkeys).