Difference between revisions of "September 16, 2007"

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<p>[[File:Aristarchus-petro2.jpg|Aristarchus-petro2.jpg]]<br />
 
<p>[[File:Aristarchus-petro2.jpg|Aristarchus-petro2.jpg]]<br />
 
<em>Lunar Orbiter V-198 image, processed by [mailto:Noah.E.Petro@nasa.gov Noah Petro], Maryland</em></p>
 
<em>Lunar Orbiter V-198 image, processed by [mailto:Noah.E.Petro@nasa.gov Noah Petro], Maryland</em></p>
<p>The high resolution Lunar Orbiter images have been a critical resource to professional and amateur lunar astronomers for 40 years. During all these decades the lines (both dark and bright) that mark the boundaries of individual framelets have been an eyesore and a nuisance. A cartoon drawn by a US Geologic Survey artist in the late 60&#8217;s showed Apollo astronauts who have landed on the Moon only to find that it&#8217;s surface is really made of long strips of terrain, each slightly offset from the others (see Mutch&#8217;s excellent [http://www.amazon.com/Geology-Moon-Stratigraphic-Thomas-Mutch/dp/0691081107 book], p 47 for the cartoon). [[September_13,_2007|Niels Noordhoek]] recently provided a way to nicely remove the framelet lines, but the method required using fairly complex software. Today, Noah Petro offers a [http://www.lpod.org/?page_id=1397 tutorial] on using the free software <em>[http://rsb.info.nih.gov/ij/ ImageJ]</em> to achieve a similar effect by following a step-by-step process. The right side of the Lunar Orbiter V image is the normal frame, and the left shows the dramatic improvement from Noah&#8217;s processing. Try it - maybe Orbiter&#8217;s lines can be <em>lost and gone forever</em>. </p>
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<p>The high resolution Lunar Orbiter images have been a critical resource to professional and amateur lunar astronomers for 40 years. During all these decades the lines (both dark and bright) that mark the boundaries of individual framelets have been an eyesore and a nuisance. A cartoon drawn by a US Geologic Survey artist in the late 60&#8217;s showed Apollo astronauts who have landed on the Moon only to find that it&#8217;s surface is really made of long strips of terrain, each slightly offset from the others (see Mutch&#8217;s excellent [http://www.amazon.com/Geology-Moon-Stratigraphic-Thomas-Mutch/dp/0691081107 book], p 47 for the cartoon). [[September_13,_2007|ImageJ]]</em> to achieve a similar effect by following a step-by-step process. The right side of the Lunar Orbiter V image is the normal frame, and the left shows the dramatic improvement from Noah&#8217;s processing. Try it - maybe Orbiter&#8217;s lines can be <em>lost and gone forever</em>. </p>
 
<p>[mailto:tychocrater@yahoo.com Chuck Wood]</p>
 
<p>[mailto:tychocrater@yahoo.com Chuck Wood]</p>
<p><em> Can&#8217;t identify the crater - [http://the-moon.wikispaces.com/Aristarchus tsk, tsk!]</em></p>
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<p><em> Can&#8217;t identify the crater - [https://the-moon.us/wiki/Aristarchus tsk, tsk!]</em></p>
 
<p><b>Related Links:</b><br />
 
<p><b>Related Links:</b><br />
 
Rükl plate 18</p>
 
Rükl plate 18</p>

Latest revision as of 18:42, 18 August 2018

Banishing Lines, Pt. 2

Aristarchus-petro2.jpg
Lunar Orbiter V-198 image, processed by Noah Petro, Maryland

The high resolution Lunar Orbiter images have been a critical resource to professional and amateur lunar astronomers for 40 years. During all these decades the lines (both dark and bright) that mark the boundaries of individual framelets have been an eyesore and a nuisance. A cartoon drawn by a US Geologic Survey artist in the late 60’s showed Apollo astronauts who have landed on the Moon only to find that it’s surface is really made of long strips of terrain, each slightly offset from the others (see Mutch’s excellent book, p 47 for the cartoon). ImageJ to achieve a similar effect by following a step-by-step process. The right side of the Lunar Orbiter V image is the normal frame, and the left shows the dramatic improvement from Noah’s processing. Try it - maybe Orbiter’s lines can be lost and gone forever.

Chuck Wood

Can’t identify the crater - tsk, tsk!

Related Links:
Rükl plate 18

Yesterday's LPOD: Who You Gonna Believe?

Tomorrow's LPOD: Oddly Familiar


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