High Angle Tracks - Formerly Low Angle Tracks

[the moon]

Okay, what do the rest of you think? Should a TRUE track / particle stay in focus or become clearer the deeper you go, or could a shallow particle come into focus and then blur out?

If by true track, you mean intersteller, then it should stay in focus as you go deeper and never blur out. Those particules should hit the collector with enough speed that we only see about the top 10% of the track.

But the low angle tracks in this topic are from other sources that usually weren't going as fast and so they can end within the depth we can see. In which case they would come into focus and then blur out as you go deeper.

[DiamondGirl]

Okay folks - need your opinion!

I clicked on this FM as a possible low angle track, but only 1 other person has so far agreed. I'm concerned that if it's a possible track, it's going to be overlooked.

8665344V1

It's near the center, and as you focus down below surface you will see it move to the southwest.

It's extremely subtle, and I question it because there looks to be another smaller line moving just above it but in a more westerly direction, but clicked it because I thought the possibility was there that a low angle particle hitting might fracture and send off multiple tracks. They definitely get are still clear below surface and show movement (or appear to).

I truly think it deserves some review, but only 2 people have clicked it - one of them me! <:- )

So what do you all think? Low angle track, or no?

[xxxxxy]

Yes, you have realy sharp eyes. I would miss it. For me looks like low angled track.

[jsmaje]

Re DiamondGirl's 8665344V1:
Hmm - looks to me like a surface feature - note that its 'shadow' is still visible well above the surface (in fact from the very first frame; I had to tilt my LCD screen back to convince myself though). In fact there's a third even subtler linear feature at a tangent to the more obvious defect that the other two radiate from (to the right, pointing SSW).

[DiamondGirl]

Re DiamondGirl's 8665344V1:
Hmm - looks to me like a surface feature - note that its 'shadow' is still visible well above the surface (in fact from the very first frame; I had to tilt my LCD screen back to convince myself though). In fact there's a third even subtler linear feature at a tangent to the more obvious defect that the other two radiate from (to the right, pointing SSW).

Hmmm. I may just be chasing shadows, eh?

I have noticed that by changing my monitor display property settings from 1024x768 to 800x600 I was able to see better (the box is a bit bigger so much less eye strain), but I do lose some of the sharpness and clarity, so it's possible I'm not at the optimal settings to see all of the really fine detail. If I come across one like this again I'll probably try both settings to see if I can clarify.

Thanks much for taking a peek at it.

[jsmaje]

I have noticed that by changing my monitor display property settings from 1024x768 to 800x600 I was able to see better (the box is a bit bigger so much less eye strain), but I do lose some of the sharpness and clarity, so it's possible I'm not at the optimal settings to see all of the really fine detail.

I know what you mean, but from the Tech FAQ: "We recommend using at least 1024 x 768 resolution."
At lower resolutions it can be all-too-tempting to pick out various "features" (it's the way the brain works) which at higher resolutions you would interpret differently - the 'canals' and 'face' on Mars?!

[pastaboy]

I'm cross posting this one as it's definately my favourite and looks like something low angle

http://stardustathome.ssl.berkeley.edu/ ... d=281240V1

as someone pointed out it's probably too big to be dust but it stilll looks cool

[jsmaje]

I'm cross posting this one as it's definately my favourite and looks like something low angle

http://stardustathome.ssl.berkeley.edu/ ... d=281240V1

as someone pointed out it's probably too big to be dust but it stilll looks cool

I clicked that one too - not an interstellar track, but possibly interplanetary dust or ejecta from the spacecraft. It would be really nice to know what was in the FOVs above it, but the way the VM is currently set up we can't find out from the movie numbers - only the Berkeley team have the key to that, and it seems they're busy elsewhere at the moment.

[lpspieler]

I'm cross posting this one as it's definately my favourite and looks like something low angle

http://stardustathome.ssl.berkeley.edu/ ... d=281240V1

as someone pointed out it's probably too big to be dust but it stilll looks cool

I've seen one or two similar movies posted during the past days. Indeed, it's a lengthy feature that apparently goes below the surface.

What makes me doubt that it is really a track and has kept me from marking similar features before is the fractured appearance. Any obvious low angle tracks i've seen until now had a pretty clean boundary.

Now that a number of people keep saying that features like in the posted movie should be marked as possible tracks i'm left in uncertainty. Any hints?

[Mighty Pete]

lpspieler:

Show me the top movie if it then looks like a track I'll be sure and click it. With what is presented you can't tell. It's not strait and it's crack like, got to give me more than that..

[tiggertim]

Spotted another low angle track,

http://stardustathome.ssl.berkeley.edu/ ... d=730481V1

just above and left of center, Rating 258 / 56.

It still seems a lot of people keep missing such events.

Cheers.

Tim.

[Nikita]

Tim,

It does look like it has a track, but the dust is supposed to be too small for us to see, just the track. That may be why people aren't clicking on it.

Good luck! Let us know what they say on it!

Nikita

[greuti]

Hi,

Even it seems there is another (yet very smaller) tiny track close to the "bigger" one, isn't it. Just at the beginning of it and running in same direction. Or is it the same track wherein the particle broken off one time?

Two tracks could mean that such tiny tracks also could be "man-made" during handling of the collector - in addition to those (synthetic?) fibers and other things/features that have been found sometimes.

[DiamondGirl]

Spotted another low angle track,

http://stardustathome.ssl.berkeley.edu/ ... d=730481V1

just above and left of center, Rating 258 / 56.

It still seems a lot of people keep missing such events.

Cheers.

Tim.

I clicked on this one, Tim. I had also wondered how something that seemed to me to be one of the better possibilities had such a low scoring, but I think the low angle tracks are harder for some people to spot. Those of us who post and read the forums regularly are probably more familiar with them, but my guess is that quite a lot of folks don't bother to check all the updated messages.

On the flip side of that, I worry when I see that the FMs passing the 1st Cut often appear to me to be obviously bad focus slides. I'm starting to wonder if my perception of this is somehow flawed, or if all of these will in fact turn out to be nothing even though they've passed the first cut.

Anyone else having this worry?

[Howie]

I have been passing these up because I was looking for tracks with particles and garbage along the track such as the tutorial...below

http://stardustathome.ssl.berkeley.edu/ ... _number=10

These shorter track have a path and something at the end like a blob but the tutorial looks like a fragment sitting above the surface at the end of path, or are the possible particles along the path?

I am confused?

Thanks for the help,
Howie