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/E074N3010

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_E074N3010
Site Name	Reiner Gamma
Center Lat	7.0
Center Lon	301.0
Minimum Lat	6.48
Western-most Lon	301.05
Maximum Lat	8.27
Eastern-most Lon	301.20
DTM Used	NAC_DTM_REINERPHOT_E074N3010
# Images	20

Images used:

Image ID	Avg Incidence	Avg Emission	Avg Phase	Pixel Scale	Date
M1127569280L	74°	69°	6°	3.30 m/px	2013-07-04
M1127569280R	75°	73°	3°	3.69 m/px	2013-07-04
M1132219897L	15°	19°	32°	1.12 m/px	2013-08-27
M1132219897R	15°	16°	29°	1.11 m/px	2013-08-27
M1145170190L	37°	34°	71°	1.27 m/px	2014-01-24
M1145170190R	38°	31°	68°	1.25 m/px	2014-01-24
M1145177302L	38°	19°	57°	1.13 m/px	2014-01-24
M1145177302R	39°	16°	54°	1.11 m/px	2014-01-24
M1167547085L	43°	18°	25°	1.08 m/px	2014-10-10
M1167547085R	43°	21°	23°	1.09 m/px	2014-10-10
M1167561301L	41°	19°	60°	1.08 m/px	2014-10-10
M1167561301R	42°	16°	57°	1.07 m/px	2014-10-10
M1180506270L	19°	2°	21°	1.11 m/px	2015-03-09
M1180506270R	19°	1°	18°	1.11 m/px	2015-03-09
M1198188316L	40°	60°	99°	1.85 m/px	2015-09-29
M1198188316R	40°	56°	96°	1.75 m/px	2015-09-29
M1221706495L	37°	32°	8°	0.98 m/px	2016-06-27
M1221706495R	38°	35°	6°	0.99 m/px	2016-06-27
M1236922564L	24°	80°	103°	5.99 m/px	2016-12-21
M1236922564R	26°	75°	100°	5.03 m/px	2016-12-21

Reiner Gamma Photometry Site