FEATURE: Basics Convert Feature X in image Y to Line(s),Sample(s) –Load & display ddd image –Graphical interface: click on feature Convert Line,Sample to Lat,Long (NEW) Save information in flat file (ASCII text)

FEATURE: Requirements Pieces required to run FEATURE –GUI computer –IDL –Image (e.g. MSSS ddd format) ddd file header –TDI timing –DTM (e.g. from PDS) –SPICE ICY (IDL interface to SPICE toolkit) Kernels –Duplicate MSSS kernel directory structure locally id time :96 start 0 cross 5056 down cam ctx mode 0x0 dac 196 offset sram_base 0 start_addr 0 exposure 1.87 msec (19) FPA-temp 18.2 C (2398)

FEATURE: Screenshot Browse window Zoom window (autostretched) Features Last click’s coordinates Image filename Feature user comments

FEATURE: Compatibility Unix , Linux PC Win Mac From requirements slide: Pieces required to run FEATURE –GUI computer –IDL –Image (e.g. MSSS ddd format) ddd file header –Contains S/C, instrument, TDI timing –DTM (e.g. from PDS) –SPICE ICY (IDL interface to SPICE toolkit) Kernels –Duplicate MSSS kernel directory structure locally

FEATURE: Status GUI: working Click Feature X to Line,Sample: working Save info to text file: working Line,sample to Lat,Long calcs: working Integrate Lat,Long calcs: soon

FEATURE: MRO to LRO What will be needed for FEATURE to work with LRO? FEATURE is largely mission-independent –Model: each image pixel is a ray in space; ray intersects surface (DTM) –Pixel image timing (from header)  SPICE lookup  ray geometry –Minor mission-specific modifications to FEATURE code are likely Ideally the LRO ddd headers will be similar to MRO headers LRO-specific SPICE files: likely from project –Instrument & Frame Kernels (IKs & FKs) Ideally the project defines the same SPICE variables as MRO –Leapsecond & spacecraft clock kernels (LSKs & SCLKs) –Trajectory & attitude Kernels (SPKs & CKs; ongoing downloads) –“The achilles heel of SPICE is kernel management” Lunar DTM: convert to same format as MOLA PDS MEGDRs –FEATURE is currently limited to DTMs that fit into a single image as Radius vs Lat,Lon (32 pixel/degree MOLA data) –This limitation may be removed in the future