Apollo Discussions > The Hoax Theory

Shadows on the A11 Passive Seismometer Experiment

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MartinC:
I've had a reasonable discussion with a youtube poster and I believe I've addressed his misunderstandings around the different cameras (video/TV) used on the missions.

He's now pointed me in the direction of still images taken during the deployment of the PSE during A11 (AS11-40-5948 - 5950). In particular, image 5950 https://www.hq.nasa.gov/alsj/a11/AS11-40-5950HR.jpg shows the solar panels in light and the panel closest to the camera appears almost translucent whereas 5948 and 5949 show the panels in compete shadow.

Ultimately I'm not overly concerned about addressing the hoaxer but for my own knowledge I would like to try to understand why there is such a difference in the solar panel appearance between photographs. Is it simply down to camera angle and reflected light or am I missing something obvious. I've had a look at the Catalog of Apollo Experiment Operations (NASA 1317) to try and understand the component parts of the PSE but I'm not really any further forward.

Apologies, I'm not sure if I've explained too well but would welcome any thoughts or comments.

Al Johnston:
I don't think that's translucence showing on the panels, it looks more like reflection of the lunar surface behind them...

bknight:

--- Quote from: MartinC on January 27, 2019, 07:58:24 AM ---I've had a reasonable discussion with a youtube poster and I believe I've addressed his misunderstandings around the different cameras (video/TV) used on the missions.

He's now pointed me in the direction of still images taken during the deployment of the PSE during A11 (AS11-40-5948 - 5950). In particular, image 5950 https://www.hq.nasa.gov/alsj/a11/AS11-40-5950HR.jpg shows the solar panels in light and the panel closest to the camera appears almost translucent whereas 5948 and 5949 show the panels in compete shadow.

Ultimately I'm not overly concerned about addressing the hoaxer but for my own knowledge I would like to try to understand why there is such a difference in the solar panel appearance between photographs. Is it simply down to camera angle and reflected light or am I missing something obvious. I've had a look at the Catalog of Apollo Experiment Operations (NASA 1317) to try and understand the component parts of the PSE but I'm not really any further forward.

Apologies, I'm not sure if I've explained too well but would welcome any thoughts or comments.

--- End quote ---

49 50 are almost identical while 48 is taken from a much different perspective sowing the backside of the mentioned panel.

If the panel was translucent, which it isn't, then you would be seeing the shadow of the support arms and central copper piece at the bottom of the panel.  Further the large rock at the upper part of the image would show through in the upper panel.  All of these don't show in the panel, so no it isn't translucent.  I agree with Al it is just a reflection.

MartinC:
I'm now wondering whether it is to do with the angle of incidence.  This map shows the location from which the images were taken https://www.hq.nasa.gov/alsj/a11/A11PlanimetricMapVer1.0LROC-M17512493R.jpg

Images 5949 and 5950 are taken virtually side on to the panels, whereas 5951 is more "front on"

https://www.hq.nasa.gov/alsj/a11/AS11-40-5949HR.jpg
https://www.hq.nasa.gov/alsj/a11/AS11-40-5950HR.jpg
https://www.hq.nasa.gov/alsj/a11/AS11-40-5951HR.jpg


bknight:

--- Quote from: MartinC on January 27, 2019, 12:42:48 PM ---I'm now wondering whether it is to do with the angle of incidence.  This map shows the location from which the images were taken https://www.hq.nasa.gov/alsj/a11/A11PlanimetricMapVer1.0LROC-M17512493R.jpg

Images 5949 and 5950 are taken virtually side on to the panels, whereas 5951 is more "front on"

https://www.hq.nasa.gov/alsj/a11/AS11-40-5949HR.jpg
https://www.hq.nasa.gov/alsj/a11/AS11-40-5950HR.jpg
https://www.hq.nasa.gov/alsj/a11/AS11-40-5951HR.jpg

--- End quote ---

Excellent observation.

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