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RobDob
sage


Reged: 04/10/10

Loc: Brentwood (East Bay Area), CA
Re: July 17 - High Energy Activity near Maginus A new [Re: RobDob]
      #6028386 - 08/16/13 01:04 AM Attachment (15 downloads)

Compare to this reference pic from 11/12. If there was an impact event, it's not apparent at this resolution...

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RobDob
sage


Reged: 04/10/10

Loc: Brentwood (East Bay Area), CA
Re: July 17 - High Energy Activity near Maginus A new [Re: RobDob]
      #6028391 - 08/16/13 01:09 AM Attachment (15 downloads)

Oh dang, changed pages, reposting comparison pic from 8/15/13 (pg. 6):

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Asbytec
Guy in a furry hat
*****

Reged: 08/08/07

Loc: La Union, PI
Re: July 17 - High Energy Activity near Maginus A new [Re: RobDob]
      #6028474 - 08/16/13 02:44 AM Attachment (14 downloads)

Thanks...

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GlennLeDrew
Postmaster
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Reged: 06/18/08

Loc: Ottawa, Ontario, Canada
Re: July 17 - High Energy Activity near Maginus A new [Re: Asbytec]
      #6028508 - 08/16/13 03:23 AM

By comparison, Troublemaker's images are rather less sharp, with an odd smoothness apparent in places. This certainly obscures what we're supposed to be seeing. In fact, I'm still unsure of just what the purported transients are supposed to be; I can't identify anything which cannot be readily enough explained by variations in bad seeing.

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Rick Woods
Postmaster
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Reged: 01/27/05

Loc: Inner Solar System
Re: July 17 - High Energy Activity near Maginus A new [Re: azure1961p]
      #6028528 - 08/16/13 03:43 AM

Quote:

Hey what did you think of David Grays mars drawing in the apodizer thread? Just 4" that small disc but he, like you had the aperture to reach out there like that. Tell me what you think!

Peye




I think David is a far more skilled observer and draftsman than I am. That's a lot of detail for such a small disk!


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azure1961p
Postmaster
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Reged: 01/17/09

Loc: USA
Re: July 17 - High Energy Activity near Maginus A new [Re: Rick Woods]
      #6028602 - 08/16/13 06:14 AM

Norme that's not ejecta its a pain't or blending tool adjustment via gimp or photoshop or the like. The odd smoothness Glenn refers to that is unlike the graininess of the original pic is the blending product of a photo editing tool. If it were real the same graininess, would be evident in a real plume.
That's the nail in the coffin as far as I'm concerned.

Pete


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Asbytec
Guy in a furry hat
*****

Reged: 08/08/07

Loc: La Union, PI
Re: July 17 - High Energy Activity near Maginus A new [Re: azure1961p]
      #6028675 - 08/16/13 08:09 AM

Yea, I gotta say there is not much in the way of impact ejecta evident. It's curious the projected impact point is that small bright rimmed crater (see the original OP sequence.) Before and after show nothing, IMO.

Glenn is correct, the resolution is less than the other two. And the 'plume' is beginning to look suspiciously like an artifact - intentional or otherwise - with "odd" smoothness compared to the rest of the image. Good point, Pete.

I really wanted to give benefit of the doubt, but I'm skeptical and now more convinced there's nothing to see here.


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sc285
member


Reged: 06/25/08

Loc: KS
Re: July 17 - High Energy Activity near Maginus A new [Re: Asbytec]
      #6037065 - 08/20/13 06:17 PM

From Dr. Tony Cook on Twitter TLP list:
https://twitter.com/lunarnaut

The images were analyzed by a Dr Arlin Crotts, astronomer and professor at Columbia University. His analysis showed this to be no more than internal reflections in the optical system.


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GlennLeDrew
Postmaster
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Reged: 06/18/08

Loc: Ottawa, Ontario, Canada
Re: July 17 - High Energy Activity near Maginus A new [Re: sc285]
      #6037155 - 08/20/13 07:09 PM

In my first post in this thread I wrote that my first impression was of a ghost reflection. I seem to recall at least one other respondent here mooting the same notion...

Of course this is merely a best guess based on the evidence. But it's rather more likely than a cloud of debris (or even gas). This goes to show the danger of rushing to a conclusion, and especially of ascribing properties to a phenomenon for which the available data are of poor quality and not supported by another independent observation. Not scientific.


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Rick Woods
Postmaster
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Reged: 01/27/05

Loc: Inner Solar System
Re: July 17 - High Energy Activity near Maginus A new [Re: GlennLeDrew]
      #6039139 - 08/21/13 08:51 PM

Quote:

In my first post in this thread I wrote that my first impression was of a ghost reflection. I seem to recall at least one other respondent here mooting the same notion...

Of course this is merely a best guess based on the evidence. But it's rather more likely than a cloud of debris (or even gas). This goes to show the danger of rushing to a conclusion, and especially of ascribing properties to a phenomenon for which the available data are of poor quality and not supported by another independent observation. Not scientific.




Actually, the only hasty conclusion anyone drew was that it was a hoax. I didn't see any rush to believe it was an actual TLP.

What sort of optical reflection might look like that in a system where there was no eyepiece involved, only the objective and the camera?

And where has the OP gotten to?


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Rick Woods
Postmaster
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Reged: 01/27/05

Loc: Inner Solar System
Re: July 17 - High Energy Activity near Maginus A new [Re: Rick Woods]
      #6039149 - 08/21/13 08:56 PM

Hey, wait a minute! Go back to the first two posts. RobDob posted a control image taken last year, which shows the same light smear, just not as extended.

The OP's observation could have just been an effect of the light angle on an existing ejecta deposit.


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GlennLeDrew
Postmaster
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Reged: 06/18/08

Loc: Ottawa, Ontario, Canada
Re: July 17 - High Energy Activity near Maginus A [Re: Rick Woods]
      #6039336 - 08/21/13 11:12 PM

Rick,
As the OP wrote, and backed up with a pic of his gear, eyepiece projection was employed. Not that a reflection is necessarily the case, but the kind of variability and irregularity in the image sequence would seem to be more in keeping with an optical effect than a physical event. The other very real possibility is seeing variation.

Indeed, where has 'troublemaker' gone?


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Louietheflyisme
professor emeritus


Reged: 06/17/13

Loc: Australia
Re: July 17 - High Energy Activity near Maginus A new [Re: GlennLeDrew]
      #6042888 - 08/24/13 03:06 AM

My conclusion thus far is that of an impact creating a dist cloud. Though I am by no means an expert astronomer. These kinds of impacts apparently happen fairly often, or so I've read. However, I remain open to deabte

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Starhunter249
sage


Reged: 06/07/10

Re: July 17 - High Energy Activity near Maginus A *DELETED* new [Re: Louietheflyisme]
      #6043727 - 08/24/13 02:25 PM

Post deleted by Starhunter249

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GlennLeDrew
Postmaster
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Reged: 06/18/08

Loc: Ottawa, Ontario, Canada
Re: July 17 - High Energy Activity near Maginus A new [Re: Starhunter249]
      #6043864 - 08/24/13 04:12 PM

What is the scale on that image? Not intending to be flippant, but if I did not know that was a lunar scene I would seriously think it to be a 2 foot section of ancient asphalt on the edge of a beat up road.

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Starhunter249
sage


Reged: 06/07/10

Re: July 17 - High Energy Activity near Maginus A new [Re: GlennLeDrew]
      #6044236 - 08/24/13 09:07 PM

I was asked to remove the NASA images. I forgotten about the rules. Posts deleted.

My mistake on the identity of the crater. The crater is actually a smaller one south east of Maginus (A) within the larger Maginus Crater. To give some kind of scale. The large forked shaped crevasse is about 200 meters in length.

Original blog: http://blog.moonzoo.org/2012/05/19/ejecta-blocking-boulders/

You can visit these two links where I got from the blog from:

http://wms.lroc.asu.edu/lroc/view_lroc/LRO-L-LROC-2-EDR-V1.0/M175308014LE

http://target.lroc.asu.edu/q3/

With access to the LRO images, who needs a telescope? Extreme large volume of images at your fingertips.


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