June 22, 2019

From LPOD
Revision as of 01:04, 22 June 2019 by Api (Talk | contribs) (Created page with "__NOTOC__ =Handheld Moon= Originally published March 10, 2010 <!-- Start of content --> <!-- ws:start:WikiTextHeadingRule:1:<h1> --> <!-- ws:start:WikiTextLocalImag...")

(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to: navigation, search

Handheld Moon

Originally published March 10, 2010 LPOD-Mar10-10.jpg
north to the left image of Apollo 15 area constructed by Howard Fink, New York

The problem with the Moon is that the illumination always comes from a limited range of azimuths, so the shadows best emphasize features that are perpendicular to those directions. But with a three dimensional model of a lunar scene you can rotate it to have illumination from any direction. Here, the Sun is to the south, casting a shadow from the Hadley Delta peak over the big bend in the Hadley Rille. Such rotations can be performed within a computer using digital terrain models (DTM), and Howard has demonstrated how those same lines of zeros and ones can be transformed into a physical depiction of the lunar surface. He used a USGS digitized version of the old topographic map of the Apollo 15 area, which he read into Mathematica, converted into a 3D model with Maya, and printed with a rapid-prototyper or 3-D printer. Howard was very kind and gave me one of these 5" x 7" models which he mounted in a cherry frame. With the new Kaguya and LRO DTMs it will be possible for many people to make their own models of any part of the Moon, using a 3-D printer at a local university or service center. I am especially pleased to see this because in my review of technology and education I suggested that 3-D printers would soon be able to bring models of planetary landforms into our hands. I am so happy to have one!

Chuck Wood

Related Links
Rükl plate 22


Yesterday's LPOD: Alpine Moonrise

Tomorrow's LPOD: Peaks & Walls


COMMENTS?

Register, Log in, and join in the comments.