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 of the same feature across different incidence, emission, and phase angles make up a photometric site. To extract accurate photometric information from a sequence, a control network is generated to tie each image to a NAC Digital Terrain Model (DTM) [1] derived orthophoto (ground truth), facilitating precise photometric angle calculations using the NAC DTM [2]. A bundle adjustment is performed to correct for pointing errors and image alignment. The images are then map-projected onto high resolution local area NAC DTMs [3].

Browse PNG images for each of the images in the photometric series can be found at http://lroc.sese.asu.edu/data/LRO-L-LROC-5-RDR-V1.0/LROLRC_2001/EXTRAS/BROWSE/NAC_PHO/E199N0308

This page allows you to preview images based on photometric conditions. Azimuth are given as degrees clockwise from north, and incidence angle is arbitrarily signed so that negative indicates sunlight is from the west. Selecting an image in the list will display it on the left and its photometric angles on the 3D display. Images names highlighted in dark gray are a set with similar incidence angles. The sliders in the lower left will also preview different images. The incidence and phase sliders will select from all images, while the emission slider selects within the currently highlighted set.

When citing this product, use the following reference:

Martin, A. C., Boyd, A. K., Robinson, M. S. & the LROC Team (2018). Controlling LROC NAC Photometric Images. In Lunar and Planetary Science Conference (Vol. 49, abstract #1621). https://www.hou.usra.edu/meetings/lpsc2018/pdf/1621.pdf

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.

References:

1. 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

2. Woodham, R. J. (1980). Photometric method for determining surface orientation from multiple images. Optical engineering, 19(1), 191139.doi:10.1117/12.7972479

3. Henriksen, M. R., Gojic, D., Gray, P. E., Wagner, R. V., Robinson, M. S., & the LROC Team (2015). Regional LROC NAC Controlled Mosaic and Absolute Accuracy Assessment. In Second Planetary Data Workshop (Vol. 2, abstract #7033). https://www.hou.usra.edu/meetings/planetdata2015/pdf/7033.pdf

RDR Name	NAC_PHO_E199N0308
Site Name	Apollo 17
Center Lat	19.0
Center Lon	30.0
Minimum Lat	19.48
Western-most Lon	30.75
Maximum Lat	20.42
Eastern-most Lon	30.87
DTM Used	NAC_DTM_APOLLO17_1_E199N0308
# Images	54

Images used:

Image ID	Avg Incidence	Avg Emission	Avg Phase	Pixel Scale	Date
M104311715R	57°	12°	68°	1.42 m/px	2009-08-07
M106690695R	37°	21°	22°	1.56 m/px	2009-09-04
M109032389L	22°	18°	29°	0.54 m/px	2009-10-01
M109032389R	22°	21°	31°	0.55 m/px	2009-10-01
M1096286491L	72°	10°	82°	1.34 m/px	2012-07-07
M1096293636R	73°	1°	72°	1.32 m/px	2012-07-07
M1096343661R	80°	65°	17°	2.77 m/px	2012-07-07
M1111607088L	73°	11°	84°	1.25 m/px	2012-12-31
M1111607088R	73°	9°	81°	1.24 m/px	2012-12-31
M1116323350L	25°	2°	26°	0.98 m/px	2013-02-24
M1118681664L	22°	2°	23°	0.85 m/px	2013-03-23
M1133996580L	22°	2°	22°	1.23 m/px	2013-09-16
M1136349272R	40°	1°	39°	1.26 m/px	2013-10-14
M113758461L	56°	18°	73°	0.52 m/px	2009-11-25
M113758461R	56°	15°	70°	0.52 m/px	2009-11-25
M1142241002L	75°	2°	77°	1.21 m/px	2013-12-21
M1142241002R	75°	1°	74°	1.21 m/px	2013-12-21
M116113215L	82°	8°	74°	0.50 m/px	2009-12-22
M116113215R	82°	11°	71°	0.50 m/px	2009-12-22
M1162255356L	29°	2°	30°	1.19 m/px	2014-08-09
M1164610707L	22°	2°	23°	0.98 m/px	2014-09-06
M1164610707R	22°	1°	22°	0.97 m/px	2014-09-06
M117291316L	85°	15°	70°	0.51 m/px	2010-01-05
M1177564379L	25°	2°	26°	1.15 m/px	2015-02-03
M1182232465L	48°	61°	20°	2.66 m/px	2015-03-29
M1184583087L	74°	63°	13°	2.83 m/px	2015-04-25
M1190519017R	50°	27°	25°	1.15 m/px	2015-07-02
M1192859369L	27°	7°	33°	1.04 m/px	2015-07-30
M1192859369R	28°	4°	30°	1.04 m/px	2015-07-30
M1212862656R	46°	27°	22°	1.03 m/px	2016-03-17
M1212876723R	45°	5°	50°	0.92 m/px	2016-03-17
M1215169458L	78°	73°	7°	4.14 m/px	2016-04-13
M1218752280R	71°	1°	69°	0.99 m/px	2016-05-24
M1228162761L	44°	5°	40°	1.19 m/px	2016-09-10
M1228162761R	44°	8°	38°	1.19 m/px	2016-09-10
M1243463429R	48°	1°	47°	1.07 m/px	2017-03-06
M1276388423L	81°	2°	82°	0.91 m/px	2018-03-22
M129086118L	55°	2°	56°	0.49 m/px	2010-05-21
M129086118R	55°	1°	54°	0.49 m/px	2010-05-21
M131447374L	79°	12°	91°	0.49 m/px	2010-06-17
M131447374R	79°	9°	88°	0.49 m/px	2010-06-17
M134985003L	64°	22°	86°	0.52 m/px	2010-07-28
M134985003R	64°	19°	83°	0.52 m/px	2010-07-28
M134991788L	65°	14°	51°	0.51 m/px	2010-07-28
M134991788R	65°	17°	48°	0.51 m/px	2010-07-28
M162107606L	74°	4°	78°	0.48 m/px	2011-06-07
M165645700L	69°	2°	71°	0.48 m/px	2011-07-18
M165645700R	69°	1°	68°	0.48 m/px	2011-07-18
M172717297L	25°	1°	25°	0.48 m/px	2011-10-08
M172717297R	25°	4°	23°	0.48 m/px	2011-10-08
M180966380L	70°	2°	71°	1.33 m/px	2012-01-12
M185684128R	22°	1°	22°	1.04 m/px	2012-03-06
M192703697R	77°	65°	14°	2.79 m/px	2012-05-26
M192753724L	70°	2°	68°	1.31 m/px	2012-05-27

Apollo 17 Photometry Site