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/E207N3357

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_E207N3357
Site Name	March 17 Impact
Center Lat	20.0
Center Lon	335.0
Minimum Lat	19.62
Western-most Lon	335.43
Maximum Lat	21.74
Eastern-most Lon	335.97
DTM Used	NAC_DTM_MARCH17_E207N3357
# Images	80

Images used:

Image ID	Avg Incidence	Avg Emission	Avg Phase	Pixel Scale	Date
M102314667L	77°	2°	79°	1.38 m/px	2009-07-15
M109392442R	22°	1°	22°	0.52 m/px	2009-10-05
M1103723772L	25°	2°	26°	1.03 m/px	2012-10-01
M1114334439L	44°	2°	46°	1.01 m/px	2013-02-01
M1114334439R	45°	1°	43°	1.01 m/px	2013-02-01
M1121401526R	47°	1°	46°	1.00 m/px	2013-04-24
M1123761564R	71°	8°	78°	1.30 m/px	2013-05-21
M1127284564L	71°	1°	70°	1.24 m/px	2013-07-01
M1129638457L	47°	2°	48°	1.13 m/px	2013-07-28
M1129645568L	47°	8°	40°	1.14 m/px	2013-07-28
M1129645568R	47°	11°	37°	1.15 m/px	2013-07-28
M1131985103L	26°	25°	45°	1.37 m/px	2013-08-24
M1131999331L	27°	1°	26°	1.00 m/px	2013-08-24
M1131999331R	27°	4°	24°	1.00 m/px	2013-08-24
M1132006428L	27°	16°	21°	1.21 m/px	2013-08-24
M1132006428R	28°	19°	21°	1.22 m/px	2013-08-24
M1134351922L	25°	2°	25°	1.25 m/px	2013-09-20
M1134351922R	25°	1°	24°	1.25 m/px	2013-09-20
M1139065512L	69°	2°	70°	1.13 m/px	2013-11-14
M1142603627L	72°	2°	73°	1.27 m/px	2013-12-25
M1144964287R	46°	1°	45°	1.28 m/px	2014-01-21
M1147310942L	23°	16°	35°	1.06 m/px	2014-02-17
M1147310942R	24°	13°	33°	1.05 m/px	2014-02-17
M1147318021L	24°	26°	16°	1.15 m/px	2014-02-17
M1147318021R	24°	26°	14°	1.15 m/px	2014-02-17
M1149673670L	23°	2°	25°	1.30 m/px	2014-03-17
M1152022883L	46°	8°	38°	1.31 m/px	2014-04-13
M1152022883R	46°	11°	36°	1.32 m/px	2014-04-13
M1157905715L	71°	2°	72°	1.22 m/px	2014-06-20
M1157905715R	71°	1°	70°	1.22 m/px	2014-06-20
M1160254917L	46°	12°	57°	1.23 m/px	2014-07-17
M1160254917R	46°	9°	54°	1.22 m/px	2014-07-17
M1160269154L	48°	19°	31°	1.27 m/px	2014-07-17
M1160269154R	48°	22°	28°	1.28 m/px	2014-07-17
M1164966432L	25°	1°	24°	1.21 m/px	2014-09-10
M1164966432R	25°	4°	23°	1.21 m/px	2014-09-10
M1177926823L	23°	2°	24°	1.21 m/px	2015-02-07
M1182637218L	46°	2°	48°	1.22 m/px	2015-04-02
M1182637218R	46°	1°	45°	1.22 m/px	2015-04-02
M1193217767L	25°	2°	26°	1.07 m/px	2015-08-03
M1195572111R	25°	1°	25°	1.08 m/px	2015-08-30
M1197927842L	45°	2°	47°	1.10 m/px	2015-09-26
M1197927842R	46°	1°	45°	1.09 m/px	2015-09-26
M120012567L	55°	2°	56°	0.82 m/px	2010-02-05
M120012567R	55°	1°	54°	0.82 m/px	2010-02-05
M1208530377L	23°	2°	24°	1.14 m/px	2016-01-27
M1210886396L	26°	2°	27°	1.13 m/px	2016-02-23
M1210886396R	26°	1°	25°	1.13 m/px	2016-02-23
M1223816203L	25°	2°	26°	1.02 m/px	2016-07-22
M1223816203R	25°	1°	24°	1.01 m/px	2016-07-22
M1239124122L	22°	21°	9°	1.24 m/px	2017-01-15
M1239124122R	22°	21°	7°	1.24 m/px	2017-01-15
M1243829172L	52°	2°	54°	1.16 m/px	2017-03-10
M1243829172R	52°	1°	51°	1.15 m/px	2017-03-10
M1247341470L	87°	2°	89°	0.91 m/px	2017-04-20
M1247341470R	88°	1°	86°	0.91 m/px	2017-04-20
M1259101030L	53°	2°	55°	0.96 m/px	2017-09-03
M1259101030R	53°	1°	52°	0.96 m/px	2017-09-03
M1267347671R	37°	1°	36°	1.01 m/px	2017-12-08
M1269696510L	20°	20°	3°	1.06 m/px	2018-01-04
M1269696510R	20°	20°	1°	1.06 m/px	2018-01-04
M1277909539L	81°	2°	83°	1.03 m/px	2018-04-09
M1277909539R	81°	1°	80°	1.03 m/px	2018-04-09
M1293213379R	83°	1°	81°	1.09 m/px	2018-10-03
M1297912728L	31°	2°	33°	1.13 m/px	2018-11-26
M1297912728R	32°	1°	31°	1.12 m/px	2018-11-26
M1300267547L	21°	2°	22°	1.16 m/px	2018-12-24
M1302615763L	38°	2°	40°	1.16 m/px	2019-01-20
M1302615763R	38°	1°	37°	1.16 m/px	2019-01-20
M1346051841R	32°	36°	24°	1.16 m/px	2020-06-06
M1346065895R	30°	1°	30°	0.95 m/px	2020-06-06
M142421418R	30°	1°	30°	0.50 m/px	2010-10-22
M181330922L	66°	2°	68°	1.36 m/px	2012-01-16
M181330922R	66°	1°	65°	1.36 m/px	2012-01-16
M183689789L	41°	2°	42°	1.35 m/px	2012-02-12
M183689789R	41°	1°	40°	1.35 m/px	2012-02-12
M183725519L	44°	50°	17°	2.16 m/px	2012-02-12
M183725519R	45°	53°	18°	2.26 m/px	2012-02-12
M186048671L	21°	2°	21°	1.06 m/px	2012-03-10
M186048671R	21°	1°	20°	1.05 m/px	2012-03-10

March 17 Impact Photometry Site