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).

Site Name September 11 Impact site: Before Impact
Center Lat -16.8
Center Lon 339.5
Pixel Scale 0.90 m/px
# Images 4
Incidence High Sun

Images used, in order of layering from front to back:
Image ID Center Lat Center Lon Incidence Pixel Scale
M1119014742R -16.78 339.47 24° 0.82 m/px
M1119014742L -16.78 339.61 24° 0.82 m/px
M1149637354L -17.01 339.61 23° 0.91 m/px
M1149637354R -17.01 339.46 23° 0.91 m/px

September 11 Impact site: Before Impact, high-Sun controlled NAC mosaic (B)

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