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_SECCHIMMLOB_E012N0400
Site Name Secchi mound
Center Lat 1.2
Center Lon 40.0
Pixel Scale 1.10 m/px
# Images 8
Incidence Low Sun

Images used, in order of layering from front to back:
Image ID Center Lat Center Lon Incidence Pixel Scale
M1157493224R 1.16 39.96 75° 1.04 m/px
M1157493224L 1.15 39.80 75° 1.04 m/px
M1157478985L 1.16 40.39 73° 1.11 m/px
M1157478985R 1.17 40.58 74° 1.10 m/px
M1157500344L 1.15 39.47 76° 1.08 m/px
M1157500344R 1.16 39.65 76° 1.08 m/px
M1157486105L 1.16 40.08 74° 1.05 m/px
M1157486105R 1.17 40.24 74° 1.04 m/px

Secchi mound low-Sun controlled NAC mosaic (B)

Mosaic (1.10 m/px) (click for more information)