File:AS16-M-2478.png

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DescriptionAS16-M-2478.png	English: This photo is used in Figure 30-7 of the Apollo 16 Preliminary Science Report (NASA SP-315), which has the following caption: Unrectified, oblique photograph of Alphonsus Crater (Apollo 16 metric camera frame 2478). This is shown as Figure 211 from Apollo Over the Moon (NASA SP-362, 1978), which has the following caption: This oblique metric photo shows part of the lunar highlands where the ancient crust is saturated with large craters. Portrayed here are the crater Alphonsus (middle ground) and the ancient crater Ptolemaeus (foreground). The floor of Alphonsus is broken by faults that form a polygon roughly parallel to the walls. Dark halo craters lie along these faults. The rims of the dark halo craters fill in the fault troughs. This relationship indicates that the craters must have been formed by material ejected from the central vents rather than by collapse of material into the cracks. However, unlike impact craters with their hummocky ejecta and lines of secondary craters, the smooth rimmed deposits have been interpreted as finegrained volcanic ejecta. Lunar transient events have been observed many times in the crater Alphonsus. Red glows have been documented and spectra have been recorded by Kozyrev (1971) that apparently confirm the existence of gaseous emissions. These events are thought to be related to orbital parameters; when gravitational stresses are high, the crust shifts and gas escapes from the interior at regular intervals. If this is true, a low level of activity still continues to affect the lunar crust and interior. General and detailed contour maps have been made (Wu et al., 1972) of Alphonsus using metric and panoramic photography obtained by Apollo 16. (See figs. 212 to 215. Fig. 212 is outlined in this figure, and fig. 213 is outlined in fig. 212.)-H.M. Photographic data: Image Name: AS16-M-2478 Mission: Apollo 16 Revolution (Orbit): 48 Camera: Mapping/Metric Exposure: 00:00:00 Camera Tilt: 40 Scan Pixel Scale: 7.933 Start Time: (DOY:114) 1972-04-23T17:38:37 Spacecraft Altitude: 119.27 km Center Coordinates (lat, lon): -12.48°,-3.05° Corner Coordinates: -5.75°,-6.13° -6.31°,0.05° -12.43°,-0.31° -12.03°,-6.7° Sun Elevation: 28.0° Features: ALPHONSUS, PTOLEMAEUS Film Type: 3400 Color: black&white
Date	23 April 1972
Source	Arizona State University, Apollo Image Archive, Apollo Browse Gallery, Apollo 16: Mapping (Metric) Camera, AS16-M-2478
Author	NASA

This image or video was catalogued by one of the centers of the United States National Aeronautics and Space Administration (NASA) under Photo ID: AS16-M-2478.

This tag does not indicate the copyright status of the attached work. A normal copyright tag is still required. See Commons:Licensing.

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Licensing

	This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.)
	Warnings: Use of NASA logos, insignia and emblems is restricted per U.S. law 14 CFR 1221. The NASA website hosts a large number of images from the Soviet/Russian space agency, and other non-American space agencies. These are not necessarily in the public domain. Materials based on Hubble Space Telescope data may be copyrighted if they are not explicitly produced by the STScI.[1] See also {{PD-Hubble}} and {{Cc-Hubble}}. The SOHO (ESA & NASA) joint project implies that all materials created by its probe are copyrighted and require permission for commercial non-educational use. [2] Images featured on the Astronomy Picture of the Day (APOD) web site may be copyrighted. [3] The National Space Science Data Center (NSSDC) site has been known to host copyrighted content. Its photo gallery FAQ states that all of the images in the photo gallery are in the public domain "Unless otherwise noted."

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	18:38, 17 May 2023		4,048 × 4,048 (8.03 MB)	Jstuby	Uploaded a work by NASA from Arizona State University, Apollo Image Archive, Apollo Browse Gallery, Apollo 16: Mapping (Metric) Camera, [http://wms.lroc.asu.edu/apollo/view?camera=M&image_name=AS16-M-2478 AS16-M-2478] with UploadWizard

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PNG file comment	This is a virtual print of Apollo Photograph AS16-M-2478 generated by the School of Earth and Space Exploration, Arizona State University. Usage of this image is governed by the Acceptable Use Policy, which can be accessed at http://apollo.sese.asu.edu/ABOUT_SCANS/index.html
Unique ID of original document	xmp.did:1053c5de-5a57-41f7-8b33-f13a0aa45c5e
Software used	GIMP 2.10
Horizontal resolution	28.35 dpc
Vertical resolution	28.35 dpc
File change date and time	18:33, 17 May 2023

File:AS16-M-2478.png

Summary

Licensing

Captions

Items portrayed in this file

depicts

Alphonsus

copyright status

public domain

inception

23 April 1972

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image/png

checksum

4a0df85922fce4b899e8730eacbd2d05c2817838

data size

8,416,230 byte

height

4,048 pixel

width

4,048 pixel

File history

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