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/E009S3481

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_E009S3481
Site Name	Apollo 15 SIVB Impact
Center Lat	0.0
Center Lon	348.0
Minimum Lat	-1.78
Western-most Lon	347.92
Maximum Lat	-0.07
Eastern-most Lon	348.30
DTM Used	NAC_DTM_A15SIVB_E009S3481
# Images	83

Images used:

Image ID	Avg Incidence	Avg Emission	Avg Phase	Pixel Scale	Date
M106949300L	24°	14°	38°	1.20 m/px	2009-09-07
M106949300R	24°	11°	35°	1.19 m/px	2009-09-07
M109311328L	2°	2°	1°	0.52 m/px	2009-10-04
M109311328R	2°	4°	2°	0.52 m/px	2009-10-04
M1096572724L	68°	2°	70°	1.07 m/px	2012-07-10
M1096572724R	68°	1°	67°	1.07 m/px	2012-07-10
M1101288415R	15°	1°	14°	0.92 m/px	2012-09-03
M1106002958L	40°	2°	41°	0.91 m/px	2012-10-27
M1111890780L	69°	2°	71°	1.05 m/px	2013-01-03
M1111890780R	69°	1°	68°	1.05 m/px	2013-01-03
M1114241640L	40°	17°	57°	1.06 m/px	2013-01-31
M1114241640R	40°	14°	54°	1.05 m/px	2013-01-31
M1114248745L	41°	1°	40°	1.02 m/px	2013-01-31
M1114248745R	41°	4°	37°	1.02 m/px	2013-01-31
M1114255849L	42°	20°	22°	1.09 m/px	2013-01-31
M1114255849R	42°	23°	19°	1.10 m/px	2013-01-31
M1116592846L	12°	29°	40°	1.01 m/px	2013-02-27
M1116592846R	12°	26°	38°	1.00 m/px	2013-02-27
M1116607053L	13°	7°	6°	0.90 m/px	2013-02-27
M1116607053R	14°	10°	4°	0.90 m/px	2013-02-27
M1116614157L	14°	25°	11°	1.00 m/px	2013-02-27
M1116614157R	15°	28°	14°	1.01 m/px	2013-02-27
M1118951121L	16°	21°	5°	0.82 m/px	2013-03-26
M1118951121R	16°	24°	8°	0.83 m/px	2013-03-26
M1118958225L	15°	1°	14°	0.75 m/px	2013-03-26
M1118958225R	15°	4°	11°	0.75 m/px	2013-03-26
M1118965327L	14°	18°	32°	0.79 m/px	2013-03-26
M1118965327R	14°	15°	29°	0.78 m/px	2013-03-26
M1118972430L	13°	34°	47°	0.93 m/px	2013-03-26
M1118972430R	13°	31°	44°	0.91 m/px	2013-03-26
M1121308768L	43°	17°	26°	0.92 m/px	2013-04-22
M1121308768R	43°	20°	23°	0.93 m/px	2013-04-22
M1121315868L	42°	2°	44°	0.87 m/px	2013-04-23
M1121315868R	42°	1°	41°	0.87 m/px	2013-04-23
M1121322968L	41°	21°	62°	0.93 m/px	2013-04-23
M1121322968R	41°	18°	59°	0.92 m/px	2013-04-23
M1127199663L	69°	25°	94°	1.10 m/px	2013-06-30
M1127199663R	69°	22°	91°	1.09 m/px	2013-06-30
M1127206794L	70°	2°	72°	1.99 m/px	2013-06-30
M1129574893L	45°	26°	19°	1.13 m/px	2013-07-27
M1129574893R	45°	29°	16°	1.14 m/px	2013-07-27
M1136634111L	38°	2°	39°	1.01 m/px	2013-10-17
M1138987738L	66°	2°	67°	1.01 m/px	2013-11-13
M1138987738R	66°	1°	65°	1.01 m/px	2013-11-13
M114030251R	57°	1°	56°	0.51 m/px	2009-11-28
M1142517867L	71°	2°	73°	1.01 m/px	2013-12-24
M1154293236L	69°	1°	67°	1.07 m/px	2014-05-09
M1154293236R	69°	4°	65°	1.07 m/px	2014-05-09
M1160184176L	44°	2°	45°	0.99 m/px	2014-07-16
M1160184176R	44°	1°	43°	0.99 m/px	2014-07-16
M1167248790L	38°	2°	39°	0.98 m/px	2014-10-06
M1167248790R	38°	1°	37°	0.97 m/px	2014-10-06
M1169601197R	66°	1°	65°	0.98 m/px	2014-11-02
M1177841115L	14°	2°	16°	1.02 m/px	2015-02-06
M1177841115R	14°	1°	13°	1.02 m/px	2015-02-06
M1213150577L	45°	2°	46°	0.91 m/px	2016-03-20
M1213150577R	45°	1°	44°	0.91 m/px	2016-03-20
M1256675053L	21°	2°	22°	0.81 m/px	2017-08-06
M1256675053R	21°	1°	20°	0.81 m/px	2017-08-06
M1276662163L	84°	2°	85°	1.70 m/px	2018-03-26
M1289593700R	56°	1°	54°	0.81 m/px	2018-08-22
M1291945613R	83°	1°	82°	1.57 m/px	2018-09-18
M1293121611R	82°	1°	81°	1.81 m/px	2018-10-02
M1302523929L	33°	2°	35°	1.00 m/px	2019-01-19
M1302523929R	33°	1°	32°	1.00 m/px	2019-01-19
M1308402325L	75°	2°	76°	1.37 m/px	2019-03-28
M1308402325R	75°	1°	73°	1.37 m/px	2019-03-28
M1323677870R	73°	1°	72°	0.96 m/px	2019-09-21
M1333075345L	42°	2°	44°	0.90 m/px	2020-01-07
M1338946197L	65°	2°	66°	0.87 m/px	2020-03-15
M1345996066R	20°	1°	19°	0.83 m/px	2020-06-05
M160030722L	49°	2°	51°	0.47 m/px	2011-05-14
M160030722R	49°	1°	48°	0.47 m/px	2011-05-14
M172995906L	16°	2°	18°	0.50 m/px	2011-10-11
M172995906R	17°	1°	15°	0.49 m/px	2011-10-11
M175354355L	44°	12°	56°	0.42 m/px	2011-11-08
M175354355R	44°	9°	53°	0.42 m/px	2011-11-08
M177711422L	72°	2°	74°	0.87 m/px	2011-12-05
M177711422R	72°	1°	71°	0.87 m/px	2011-12-05
M185962468L	10°	2°	11°	0.80 m/px	2012-03-09
M185962468R	10°	1°	9°	0.80 m/px	2012-03-09
M188321400L	18°	2°	20°	0.93 m/px	2012-04-06
M188321400R	18°	1°	17°	0.93 m/px	2012-04-06

Apollo 15 SIVB Impact Photometry Site