I am working with some LRO images retrieved through the LRO image search interface at: http://wms.lroc.asu.edu/lroc/search with a view towards trying a SFD (spatial frequency distribution) measurements. But I am having some difficultly decoding the LRO image codes. Here are some samples: ProductId ImageType2 M116938683RE NACR  EDR M116938683LE NACL  EDR M116938683RC NACR  CDR M116938683LC NACL  CDR M116938632MC WAC_MONO CDR M116938632ME WAC_MONO EDR M116918329ME WAC_MONO EDR M116918329MC WAC_MONO CDR M116918246LE NACL  EDR M116918246RE NACR  EDR What do "RE", "LE", "RC", "MC", etc. and NACR, NACL, WAC_MONO and "EDR" and "CDR" mean. I haven't found FAQs on the LROC website site that provide a could decode.  Anyone have any links or decode definitions on these? Thanks - Canopus56