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.

Due to the large size of this NAC ROI mosaic, the highest-resolution tiffs and pyramidal tiffs were down-sampled from 1.60 m/px to 1.73 m/px to fit the size constraints of the TIFF format.

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_KIRKWOODLOA_P684N2036
Site Name Kirkwood Crater feature mosaic
Center Lat 68.4
Center Lon 203.6
Pixel Scale 1.60 m/px
# Images 12
Incidence Low Sun

Images used, in order of layering from front to back:
Image ID Center Lat Center Lon Incidence Pixel Scale
M1112843904R 68.34 206.74 79° 1.62 m/px
M1112843904L 68.35 206.04 79° 1.62 m/px
M1112879410R 68.48 201.16 79° 1.65 m/px
M1112879410L 68.49 200.43 78° 1.65 m/px
M1112851005R 68.37 205.61 79° 1.63 m/px
M1112851005L 68.38 204.89 79° 1.63 m/px
M1112858107R 68.39 204.48 79° 1.63 m/px
M1112858107L 68.40 203.76 79° 1.63 m/px
M1112872309R 68.45 202.25 79° 1.65 m/px
M1112872309L 68.46 201.53 78° 1.65 m/px
M1112865208R 68.41 203.36 79° 1.64 m/px
M1112865208L 68.42 202.64 79° 1.64 m/px

Kirkwood Crater feature mosaic low-Sun controlled NAC mosaic (A)

Mosaic (1.60 m/px) (click for more information)