Sol 90+, Extended mission Options

[Ant103]

Hum… There is about 53 s interval between each frame. I have try it with only 2 pictures, the move of the clouds is very low. I can made a quicktime movie if you want, but i will be "like watching the minute hand on a clock".

Edit : it's very long, more than 15 minutes. And video export doesn't seem to work good.

[Deimos]

Does anyone have any idea what observations indicated ground fog? Lidar, or SSI?

I believe that was intended as a lidar reference.

Which SSI images show ground fog?

I wish! But, look really (really) squinty-eyed at http://www.met.tamu.edu/mars/i/SS109EFF905...3_1C8B0R2M1.jpg and
associated images. And maybe imagine what fog *might* look like someday in this direction, or even suggest another direction (maybe Jack's Hill to the west?).

[Juramike]

Walking out the door today for lunch I looked up and the sky overhead here had exactly the same pattern clouds and skies as recently posted for Phoenix.

That was a truly surreal sensation. I can't quite put it in words, but it was really cool....

[PDP8E]

This image came down recently:


the question is for 'someone in the know' about the SSI:
How slow is the SSI (1/8 sec, 1/2 sec 1sec ?) 'exposing' to capture this blurry movement?

[Shaka]

Edit : it's very long, more than 15 minutes. And video export doesn't seem to work good.

Thanks for your efforts, Ant! I was hoping that the winds would be faster higher up.

[Deimos]

The telltale exposures are variable, depending on time of day and other sky brightness factors. But 1/2 to 1 sec is typical. The blue filter is used to allow larger exposure times compared to the IR. That makes it easier to separate high frequency variations from the average wind in most cases.

[fredk]

To add to Deimos's comments, if you open the jpeg file in a text editor, there's a header that gives all sorts of juicy details. For the telltale image you posted, the header says

CODE

EXPOSURE_DURATION = 780.3

, which I believe is in milliseconds, ie that was just over a 3/4 second exposure.

PS - thanks for the ground fog info! Yeah, if I squint hard I can just imagine fog in the distance in that image...

[centsworth_II]

I can made a quicktime movie if you want, but i will be "like watching the minute hand on a clock".

I'm just glad to know the reality of the situation (don't need to see a real time video). Thanks for the sped up version.

[peter59]

Successful search for new Dust Devils - Sol 127.

[Stu]

Sol 128 dust grains colourisation here if anyone wants a look...

[Stu]

Some nice frost detail on this sol 129 colourisation...



... and an interesting Peter Smith hinterview here... ("Tucson Citizen")

[Jeff7]

And I just love to watch it, but I really would like to see those fluffy whites smoothly gliding along at their real speed.
I'm not asking for a computer animation - I worship reality - but can't somebody interpolate between the images?
C'mon, Astro0, if nobody else will condescend!

I know it's a little late, or has already been done, but I'm way behind on these threads. And hey, maybe this'll work for someone too.

I found this site, which gave a dandy little script for AVIsynth. Virtualdub kindly exported the video as a well-compressed GIF file.


Link
It's a little over 2MB.
Maybe it's not at "real" speed, but that'd take a darn long time for a "realtime" file.

But what the heck, my computer does all the hard work, not me, so I'll see what happens if I tinker with that AVIsynth file.
I think sometime tomorrow I should be able to get it working. Right now, the files are coming out way longer than expected - 26 hours, instead of 26 minutes. Virtualdub gives one length, but the actual file comes out much longer.

The file will be an AVI, XVID format, and probably around only 4MB.

[CosmicRocker]

That is pretty nice. I've tried to make animations that morph between the frames, but they rarely deliver a file size that fits on UMSF. That is quite nice, even if it was 2 MB.

[Ant103]

Hi all

A little mosaic showing the ground and a cloudy sky. I can post it in full resolution (base image are downsampled to 256px)


And the RA working at a trench which I forget his name

[ngunn]

A little mosaic showing the ground and a cloudy sky.

That is very nice. I'm sure someone will want to colour it . . .