Dirt particle on camera lens,specks,spots,Larry,Moe,Curly

Dark Helmet · Post by **Dark Helmet** » Sun Aug 06, 2006 10:27 am

I've noticed in pretty much of all the images a small spot on the top edge, about one fifth from the right edge. It looks like a particle but I think it's probably dirt on the lenses or inside the system so beware. Good hunting!

Sharqua · Post by **Sharqua** » Sun Aug 06, 2006 11:13 am

Yep! We're aware of this. It's particles in the microscope optics.

We're calling them Larry, Curley and Moe.

There's a third one about halfway down between the center and the lower edge of the focus movies -- that's the third one.

Don't let them fool you!

-Shar

beetlenaut · Post by **beetlenaut** » Mon Aug 07, 2006 12:04 am

I can ignore the ones on the edge, but, garn, that bottom one (Moe?) keeps faking me out. When you are at the bottom of focus and everything else is fuzzy, it draws your eye. About once every 10 minutes I get excited for a second!

fjgiie · Post by **fjgiie** » Mon Aug 07, 2006 7:12 am

Hello, what do we have here?

One more spot in microscope lens. The fourth constant speck is half way down, right of center. It really shows up on those movies that look like a blank screen.

I have spit on my screen and cleaned it off, but It's still there.

These spots are valuable in calibrating one's eyes. If you can see that bottom one, your eyes are working pretty good today.

Thanks,
fjgiie

mover · Post by **mover** » Mon Aug 07, 2006 1:58 pm

fjgiie wrote:One more spot in microscope lens. The fourth constant speck is half way down, right of center. It really shows up on those movies that look like a blank screen.

Yup, spotted that one

Let's call it Sneaky, since it sneaks up to you when you are least expecting it

Or does it have another name already?

DustBuster · Post by **DustBuster** » Mon Aug 07, 2006 2:10 pm

That would be Shemp

KarMann · Post by **KarMann** » Mon Aug 07, 2006 2:11 pm

Shemp!

gamalmfalyii · Post by **gamalmfalyii** » Mon Aug 07, 2006 7:00 pm

How about we name a fifth and sixth? Or, maybe the scanning team could rescan with a clean lens? Ah, I'm just joking, they won't clean to rescan a few

Shoe · Post by **Shoe** » Tue Aug 08, 2006 7:44 pm

larry = x:372 y:2
curley = x:507 y:9
moe = x:274 y:337
shemp = still can't find it after looking at several focus movies...but i'll find it!

by all your descriptions i think i got this right...if not, feel free to correct me...

DustBuster · Post by **DustBuster** » Tue Aug 08, 2006 9:23 pm

I've seen him, but only in a few movies (sound familiar?)

KarMann · Post by **KarMann** » Tue Aug 08, 2006 10:43 pm

Shemp is... subtle. I wasn't too sure about him for a while myself. But I kept my eye out for one that showed him off to best effect, which mostly means a rather plain background that goes very unfocussed. So, here you go:

Best bet is to view the movie and slide the focus back and forth, and you can see that there's a little patch there that doesn't quite change the same way its surroundings do.

DustBuster · Post by **DustBuster** » Tue Aug 08, 2006 10:47 pm

This topic is explained in Tutorial #6 here:
http://stardustathome.ssl.berkeley.edu/ ... e_number=6

Nyuck, nyuck, nyuck!

sub212 · Post by **sub212** » Tue Aug 29, 2006 11:58 pm

DustBuster wrote:This topic is explained in Tutorial #6 here:
http://stardustathome.ssl.berkeley.edu/ ... e_number=6

yes, and includes the total most obvious peck and ignores the other more subtle unnerving three. This thread should be mentioned there not vice versa.

You should be able to see Shemp on the last to slidees of this one:
http://stardustathome.ssl.berkeley.edu/ ... =8892384V1

Stardust@home

Dirt particle on camera lens,specks,spots,Larry,Moe,Curly

Dirt particle on camera lens,specks,spots,Larry,Moe,Curly

That bottom one

Dirty Screen?

Re: Dirty Screen?

locations of spots

Shemp