This seems to be a re-occurring phenomenon on Saturn - remember the large equatorial outbreak of 1990?

http://hubblesite.org/newscenter/archive/r...s/1991/1991/04/

Of course, English actor and comedian Will Hay is famous for (probably) being the first astronomer to observe one of these white spots, back in 1933:

http://en.wikipedia.org/wiki/Will_Hay#Private_life

I've re-compiled the video linked in my previous post based on a very good suggestion from Emily.

Here's my version, making full use of the R/G/B filtered images:

http://www.youtube.com/watch?v=gN62-at3Xm4

Gordan,

I stand corrected! It was the differing visibility of this feature in the individual filters that threw me: a quick check of several different UV-filtered images confirm that it is indeed an artefact.

In the meantime, here's a four-frame clear filter mosaic:

Here's a IR/UV/GRN combo, with the saturation increased, and the gamma decreased:



The small orange splotch that appears half way up, on the far left of the image, appears to be a real feature; it's very prominent in the UV image, and faintly visible in the GRN filter too.

The Enceladan horizon from 51 kilometres above the surface:



http://saturn.jpl.nasa.gov/photos/raw/rawi...?imageID=230082

Yes, that's mine: you're more than welcome to use it on your blog. As it happens, I've just produced a slightly better colorized version too:

http://www.youtube.com/watch?v=U5VfYDYL3rA

Here's a 'tweened' flyby movie of this encounter:

http://www.youtube.com/watch?v=il1igwWjPds&fmt=22

Here's an early morning crack at a GRN/IR/UV colour composite:

Brilliant Bjorn... just brilliant.

I've decided not to re-decorate the living room; instead, I'm going to cover the walls with posters of your amazing mosaics!

Here's a couple of 'fixed longitude' sequences, which I've culled from the 1100+ frame Voyager 1 approach movie, and 'tweened' using the method described in the previous post:

http://www.youtube.com/watch?v=RdIfnymd9Aw&fmt=22

Morning all!

I used the MSU Frame Rate Conversion Filter to 'tween' Bjorn's movie:

http://compression.ru/video/frame_rate_con...dex_en_msu.html

(BTW, thanks for introducing that term to me, Emily - I'd never encountered it until now.)

After installing AviSynth, I put together the following script, making use of the MSU filter:


I then opened this script (basically just a notepad file with an 'avs' extension) in VirtualDub. All I did then was to change the frame rate from 128 fps to 20 fps.

Saving the movie as an Xvid AVI completed the process.

Bjorn,

I hope you don't mind, but I decided to have a go at running your Voyager 1 movie through a frame rate conversion filter: the result is pretty darn good, I'm sure you'll agree!

http://planetary.s3.amazonaws.com/misc/jup...1_sharp_MSU.avi

Here's a frame from the Voyager 1 approach movie that I'm (still) working on:



Io can be seen entering eclipse on the left.

Hi Richard,

I've just uploaded the latest version of the approach movie to YouTube:

Voyager 1 Jupiter Approach Movie - October 2010 Draft
http://www.youtube.com/watch?v=7imqLyR_u6s&fmt=22

This covers a period of 95 hours, and features appearances from Ganymede, Europa and Io (twice!), in addition to the shadows of all three moons. Due to the way I've processed this movie, the moons appear to 'disappear' once they move away from Jupiter, but I shall be attempting to fix that in the next iteration of the sequence...

Bjorn,

I just want to make you aware of a possible bug in IMG2PNG that I've come across in the process of putting together my Voyager 1 Jupiter movie.

My preferred method of browsing and downloading the Voyager datasets is the Planetary Image Atlas:

http://pds-imaging.jpl.nasa.gov/search/sea...tml#QuickSearch

However, the Voyager images have a img (as opposed to a imq) file extension. When I run IMG2PNG on them, using the default syntax, I get the following result:



As you can see, something strange is happening to the right side of the image, resulting in the loss of data on the left side of the picture. Do you have any idea what might be causing this?

Despite this minor bugbear, thanks again for a wonderful program!

I've often wondered which Voyager picture Candy Hansen used in the following video to demonstrate how tectonic activity may have altered Triton's surface:

http://www.youtube.com/watch?v=yy2iscggebI

Well, I've found it -- it's a crop of image c1139623.png:



The cropped region:



In the video linked above, Ms. Hansen disects the image twice, moving the resultant pieces to reveal an ancient and degraded impact feature:

Cut One:



Cut Two:

Are these the famous shadow-casting cirrus clouds, I wonder?

Aaaahh... Neptune! I recall taping any mention of the Voyager 2 flyby on TV as a rather eager seven year-old.

Great picture Daniel.

Stephen,

You deserve all of the plaudits and kudos coming your way -- the many hours of work you've invested in this project seem to be paying off big-time.

Well done!

I agree Ted!

Gordan,

I'm pretty capricious when it comes to projects like these, so I tend to start working on them purely on a whim, and then before I know it, I feel obliged to follow them through to their conclusion. Unfortunately, I'm using the raw data, which has proved to be troublesome, due to the geometric distortions that are present in the frames.

I originally started with the Green filter movie only. Then I figured out how to semi-automatically create colour frames using the Python macro/scripting feature in Paint Shop Pro. It works very well, and means that I can essentially create a fairly-well aligned colour frame with only a few clicks of a mouse:

http://www.youtube.com/watch?v=0XjW0vZZZXw

Hot Diggity Dog! That's marvellous Daniel... another APOD-worthy effort!

Stu, I just want to offer my very belated and overdue thanks for your kind and empathetic words after I posted the news about Cleo. Seeing as how you had obviously gone through a similar thing with Amber, I thought this thread would be the perfect place to get the whole experience out of my system; you know what's been said since time immemorial: a problem shared, a problem halved...

...so thanks; I really appreciate it.

Brilliant work, Daniel!

I'm beginning to think that a website based upon the NASA Planetary Photojournal site, but dedicated solely to 'amateur' image products, might be a good way of collating the ever-growing portfolio of great work produced by people on here. We could even call it the 'UMSF Photojournal'.

Oh, Ted: I used to own a VAX. It was the best darn vacuum-cleaner I've ever had...