This preliminary mosaic of an Artemis III candidate landing site is composed of images selected to optimize illuminated terrain coverage. As a first step, the thousands of NAC images of the south pole were filtered to the region of interest and divided into square segments along the image track at 20 m/pixel to minimize file sizes and provide flexibility to use only illuminated portions of each image for mosaicking. To determine optimal image ordering, we used sub-solar longitudes to guide the image selection to ensure local areas had consistent lighting geometries. For a first pass at offset correction, we used the results of aligning most of the LROC NAC images poleward of 84° south as described in Wagner et al. 2022 (LPSC LIII, Abstract no. 2573). Each image segment was then map-projected at native image resolution (1 m/px) and images with sub-solar longitudes within 10° bins were mosaicked together. As a second pass at offset correction, we compared the sub-solar longitude mosaics to the LOLA shaded relief product (5 m pixel scale). The final mosaic is a 1 m/pixel 16-bit (unsigned word) GeoTiff masked along boundaries between images with different lighting and blended for a more “seamless” mosaic. This mosaic is composed of 69 NACs (226 image segments) and 2 bins of sub-solar longitude. We estimate the absolute positional accuracy to be 5 to 20 m.
When citing this product, use the following reference: Henriksen, M. R., Burnette, S.R., Brown, H.M., Wagner, R.V., Robinson, M.S., Collins, W.M., Grieser, S.A., Boyd, A.K. (2023), Optimized Illuminated Terrain Coverage of the Candidate Artemis III Landing Sites with LROC NAC Controlled Mosaics. European Lunar Symposium, https://sservi.directus.app/assets/2483b7e0-a336-443d-8739-3d5f4756e1fb.pdf, pg 134-135.
For more information about this and other RDRs, see the RDR Software Interface Specification (SIS) at http://lroc.sese.asu.edu/data/LRO-L-LROC-5-RDR-V1.0/LROLRC_2001/DOCUMENT/RDRSIS.PDF.
PDS PRODUCT NAMING CONVENTION
The PRODUCT_ID naming convention for LROC NAC ROIs is:
NAC_ROI_xxxxxxxxSSv_AyyyBzzzz[_##M].IMG where
Example: NAC_ROI_APOLLO15LOC_E252N0018.IMG is a NAC ROI of the Apollo 15 landing site with low-Sun. C indicates it's the third low-Sun mosaic of the Apollo 15 landing site produced. This mosaic is centered at latitude=25.2N, longitude=1.8E and is in equirectangular projection.
RDR Name | NAC_ROI_AMUNDRIMLO1_P842S0693 | |||
Site Name | Amundsen Rim | |||
Center Lat | -84.2 | |||
Center Lon | 69.3 | |||
Pixel Scale | 1.00 m/px | |||
Image Start Time (UTC) | 2009-10-25 19:48:56.29+00 | |||
Image Stop Time (UTC) | 2022-08-05 05:16:28.888+00 | |||
# Images | 69 | |||
# Segments | 226 | |||
Incidence | Low Sun | |||
Minimum Latitude | -84.65 | |||
Maximum Latitude | -83.80 | |||
Minimum Longitude | 65.10 | |||
Maximum Longitude | 73.51 |
Image ID | Center Lat | Center Lon | Incidence | Pixel Scale |
M1171585567L | -83.30 | 69.71 | 88° | 1.37 m/px |
M1171585567R | -83.33 | 69.04 | 88° | 1.37 m/px |
M1171592675L | -83.34 | 68.51 | 88° | 1.37 m/px |
M1171614030R | -85.02 | 72.04 | 88° | 1.37 m/px |
M1171621138L | -85.07 | 72.04 | 88° | 1.38 m/px |
M1171621138R | -85.12 | 71.18 | 89° | 1.38 m/px |
M1352788344L | -83.56 | 65.54 | 88° | 1.49 m/px |
M1352788344R | -83.63 | 64.79 | 88° | 1.49 m/px |
M1352795394R | -84.38 | 69.52 | 88° | 1.49 m/px |
M1352802423L | -84.23 | 68.20 | 88° | 1.48 m/px |
M1352802423R | -84.30 | 67.44 | 88° | 1.48 m/px |
M1411491604R | -83.38 | 67.51 | 88° | 1.65 m/px |
M1263421245L | -82.86 | 65.23 | 89° | 1.49 m/px |
M1263421245R | -82.92 | 64.49 | 89° | 1.48 m/px |
M1293990708R | -84.55 | 77.01 | 89° | 1.36 m/px |
M1294004760L | -84.85 | 78.04 | 89° | 1.36 m/px |
M1294004760R | -84.91 | 77.38 | 89° | 1.36 m/px |
M1294011794L | -85.31 | 82.26 | 89° | 1.36 m/px |
M111139402L | -85.58 | 74.73 | 84° | 1.68 m/px |
M111139402R | -85.59 | 73.49 | 84° | 1.67 m/px |
M111152984L | -84.56 | 71.20 | 83° | 1.69 m/px |
M111152984R | -84.57 | 70.16 | 83° | 1.69 m/px |
M111159767L | -83.82 | 69.50 | 83° | 1.70 m/px |
M111159767R | -83.82 | 68.57 | 83° | 1.70 m/px |
M111173353L | -85.60 | 68.40 | 84° | 1.71 m/px |
M111173353R | -85.61 | 67.07 | 84° | 1.71 m/px |
M111180136L | -85.29 | 66.91 | 84° | 1.71 m/px |
M111180136R | -85.30 | 65.66 | 84° | 1.71 m/px |
M1105590153R | -82.96 | 66.54 | 83° | 1.30 m/px |
M1289293483L | -83.45 | 68.16 | 84° | 1.35 m/px |
M1289293483R | -83.50 | 67.56 | 84° | 1.35 m/px |
M1289300505L | -83.61 | 67.64 | 84° | 1.35 m/px |
M1289300505R | -83.66 | 67.02 | 85° | 1.35 m/px |
M1409166974L | -83.38 | 64.75 | 85° | 1.64 m/px |
M1409166974R | -83.48 | 63.91 | 85° | 1.64 m/px |
M1409181043L | -84.38 | 72.54 | 85° | 1.63 m/px |
M1409181043R | -84.49 | 71.74 | 85° | 1.63 m/px |
M1409188081L | -84.85 | 78.91 | 86° | 1.63 m/px |
M1409188081R | -84.96 | 78.21 | 86° | 1.63 m/px |
M1409195086L | -84.42 | 70.68 | 85° | 1.63 m/px |
M1409195086R | -84.53 | 69.89 | 86° | 1.63 m/px |
M1409202084L | -83.64 | 60.96 | 85° | 1.62 m/px |
M1409202084R | -83.74 | 60.13 | 85° | 1.62 m/px |
M1409209145L | -84.89 | 76.40 | 86° | 1.62 m/px |
M1409209145R | -85.01 | 75.71 | 86° | 1.62 m/px |
M1409216129L | -83.73 | 59.73 | 85° | 1.62 m/px |
M1409216129R | -83.83 | 58.91 | 85° | 1.61 m/px |
M1409230175L | -83.81 | 58.58 | 85° | 1.62 m/px |
M1207642207R | -84.67 | 71.16 | 86° | 1.14 m/px |
M1207649244L | -84.68 | 69.08 | 86° | 1.14 m/px |
M1207649244R | -84.71 | 69.48 | 86° | 1.14 m/px |
M1207656280L | -84.58 | 68.71 | 86° | 1.14 m/px |
M1207656280R | -84.61 | 69.11 | 86° | 1.14 m/px |
M1207663319L | -84.17 | 70.83 | 86° | 1.14 m/px |
M1207663319R | -84.20 | 71.22 | 86° | 1.14 m/px |
M126458089L | -84.05 | 66.64 | 86° | 1.57 m/px |
M126458089R | -84.04 | 65.90 | 86° | 1.57 m/px |
M126464847L | -85.53 | 63.89 | 88° | 1.57 m/px |
M126464847R | -85.52 | 62.91 | 88° | 1.57 m/px |
M1319892625L | -85.35 | 80.87 | 86° | 1.54 m/px |
M1319892625R | -85.45 | 80.01 | 86° | 1.54 m/px |
M1319906685L | -85.45 | 79.39 | 86° | 1.54 m/px |
M1350474977L | -84.93 | 71.36 | 86° | 1.47 m/px |
M1386223682L | -83.62 | 69.66 | 85° | 1.66 m/px |
M1386223682R | -83.72 | 70.46 | 86° | 1.65 m/px |
M1386237778R | -83.39 | 71.01 | 85° | 1.66 m/px |
M1414315802L | -83.84 | 77.48 | 85° | 1.58 m/px |
M1414315802R | -83.94 | 78.20 | 86° | 1.58 m/px |
M187690724L | -85.29 | 60.95 | 87° | 1.21 m/px |
Link to browse PNG
http://lroc.sese.asu.edu/data/LRO-L-LROC-5-RDR-V1.0/LROLRC_2001/EXTRAS/BROWSE/NAC_ROI/AMUNDRIMLO1/NAC_ROI_AMUNDRIMLO1_P842S0693.BROWSE.PNG