Author Topic: Dark Halo Craters  (Read 55512 times)

Thomas J

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Re: Dark Halo Craters
« Reply #30 on: July 06, 2010, 10:46:59 pm »
Hi Tom128, I agree, it's very difficult to tell. The sun is coming from the left and is lighting up the left side of the image more than the right, suggesting a slope. It may be that the dark area is at the top of a raised landscape feature. It does have the appearance of some kind of venting but then it does have the appearance of shadows. I would love to see an oblique shot of this area.

Thanks again for looking out and posting this one.

DJ_59

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Re: Dark Halo Craters
« Reply #31 on: July 07, 2010, 02:16:54 am »

That one would have totally snared me.  I'm surprised it's just shadows. 

Thomas J

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Re: Dark Halo Craters
« Reply #32 on: July 07, 2010, 07:47:56 pm »
I'll have a look around and see if there's anything in that at area.

Tom128

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Re: Dark Halo Craters
« Reply #33 on: July 08, 2010, 02:01:51 am »
I think Irene and Thomas are right about the peculiar black vent like targets being shadow/reflection of the material. Below is a similar item, bottom left.


Level 3 zoom

ID: AMZ1002dge
Latitude: -8.8327°
Longitude: 15.5734°

Looks promising until you scan the surrounding area and see similar shadowing.








DJ_59

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Re: Dark Halo Craters
« Reply #34 on: July 08, 2010, 04:56:04 am »

That's exactly the kind of thing that was throwing me off.  I thought for sure those were dark haloes caused by volcanic vents.  Sometimes the shadow just seems to severe in comparison to all the other shadows, so it can be very confusing.


Aliko

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Re: Dark Halo Craters
« Reply #35 on: July 08, 2010, 10:04:43 pm »
How about this one?


# ID: AMZ1001870
# Latitude: 20.6413°
# Longitude: 30.7674°

Tom128

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Re: Dark Halo Craters
« Reply #36 on: July 09, 2010, 01:01:20 am »


level 3 zoom

ID: AMZ10037wh
Latitude: 10.831°
Longitude: 312.353°

This dark target on side of crater (lower right of photograph) is somewhat interesting as it does not appear to fit in with the shadows of other boulder/craters in the area.

kjoy

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Re: Dark Halo Craters
« Reply #37 on: July 10, 2010, 02:43:07 am »


Level 3 zoom

ID: AMZ1001emy
Latitude: -3.42171°
Longitude: 342.608°

Dark Halo craters or crash site?

This looks like the type of features Tony Cook wants to people to spot for his TLP / recent changes study - take a look at his blog post for more info!

Tom128

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Re: Dark Halo Craters
« Reply #38 on: July 10, 2010, 04:49:06 am »
Hello kjoy,

We have been discussing the pros and cons of this one and it can go either way with a weight towards crater shadowing as shared by other members. Funky picture for sure.  Deej and I are suffering from a curable but persistent MZ symptom called shadow frustration  :o  Now I am getting better at judging the Sun angle and scanning surrounding area for clues. Still, the photograph is interesting. If the more seasoned members think it should be moved I am certainly open to doing so.  :)   
« Last Edit: July 10, 2010, 04:56:02 am by Tom128 »

Tom128

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Re: Dark Halo Craters
« Reply #39 on: July 10, 2010, 05:03:51 am »



ID: AMZ10024ji
Latitude: 12.755°
Longitude: 62.2009°

Moved this up from the bench crater thread for an opinion on the dark formation on the crater rim top right of photograph.

Tom128

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Re: Dark Halo Craters
« Reply #40 on: July 10, 2010, 06:30:05 pm »


# ID: AMZ1001bdd
# Latitude: -10.149°
# Longitude: 15.513°

Apollo 16 photo strip.

Little dark target which seems out of norm center right.



Another dark formation on same photo strip.



# ID: AMZ1001bk0
# Latitude: -8.82982°
# Longitude: 15.551°

« Last Edit: July 10, 2010, 06:43:12 pm by Tom128 »

Tom128

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Re: Dark Halo Craters
« Reply #41 on: July 11, 2010, 04:25:22 am »


# ID: AMZ1001xrv
# Latitude: 23.8747°
# Longitude: 312.311°

level 3 zoom

These openings look less like craters and more like geyser blow holes.
« Last Edit: July 11, 2010, 04:27:50 am by Tom128 »

Thomas J

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Re: Dark Halo Craters
« Reply #42 on: July 11, 2010, 10:52:56 am »
This one looks very interesting, Tom.  :)

Thornius

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Re: Dark Halo Craters
« Reply #43 on: July 12, 2010, 09:12:12 pm »
Dark RAYS  WITH boulders?


http://moonzoo.s3.amazonaws.com/v10/slices/000116094.jpg

# ID: AMZ1001077
# Latitude: 23.8199°
# Longitude: 312.942°
# Sun Angle: -70.15°
# Scale: 1.43 meters / pixel
# Zoom Level: 3

Tom128

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Re: Dark Halo Craters
« Reply #44 on: July 13, 2010, 01:42:19 am »
What do you think, dark halo dead center with some lighter material trailing down and off to the left ?



# ID: AMZ1002y5n
# Latitude: 18.7891°
# Longitude: 5.25206°



In area where Ina is located.  Looks like a smoking crater  :)



« Last Edit: July 13, 2010, 03:34:24 am by Tom128 »