The two Narrow Angle Cameras (NACs) provide high-resolution (0.5 to 2.0 m/pixel) panchromatic images over a combined 5 km swath. NAC images acquired on consecutive orbits, or occasionally over non-consecutive orbits under very similar lighting conditions (e.g. less than 5° difference in incidence angle and the same sun direction), can be combined to create controlled mosaics. A control network is generated to tie the images to the most accurate ground truth available and a bundle adjustment is performed to correct for pointing errors and image alignment. The images are then map-projected using the GLD100 (WAC derived 100 m/pixel DTM) and LOLA derived crossover corrected ephemeris and mosaicked together into an almost seamless mosaic of the region.

When citing this product, use the following reference:

Klem, S. M., Henriksen, M. R., Stopar, J., Boyd, A., & Robinson, M. S. (2014). Controlled LROC Narrow Angle Camera High Resolution Mosaics. In Lunar and Planetary Science Conference (Vol. 45, abstract #2885). https://www.hou.usra.edu/meetings/lpsc2014/pdf/2885.pdf

RDR Name NAC_ROI_CATENA__LOA_E223N0295
Site Name Catena Littrow
Center Lat 22.3
Center Lon 29.5
Pixel Scale 0.90 m/px
# Images 4
Incidence Low Sun

Images used, in order of layering from front to back:
Image ID Center Lat Center Lon Incidence Pixel Scale
M1249338893R 22.31 29.75 66° 0.92 m/px
M1249338893L 22.29 29.60 66° 0.93 m/px
M1249345927R 22.29 29.44 66° 0.92 m/px
M1249345927L 22.28 29.29 66° 0.92 m/px

Catena Littrow low-Sun controlled NAC mosaic (A)

Mosaic (0.90 m/px) (click for more information)