Nothing works like guessing wrong, as I did several posts ago, to get lots of responses to a question.

Diane, chromatic aberration actually refers to both. It can be longitudinal, which is the different focal lengths (or planes) for different wavelengths effect you mentioned before. Transverse c. a. gives essentially different magnifications for different colours, so it's an off axis effect.

Sorry to drag out this very non-Duck-Bay discussion!

Well, we got here because some of the pancam shots were a bit fuzzy, so it's not quite time to pull out the yellow flag.... yet. I do wonder whether the focus is set before or after the filter is in place. If the same focus setting is used for a number of filters, that could be the source of the fuzzies.

Anyway, thanks for the enlightenment on chromatic aberation!

Let me end the off topic discussion with a request to Doug, to ask Jim about this if he does another interview. We can always start a new topic in the Tech and Imagery section if anyone wants to.

Inspired by the weekend's images of clouds over VC, here's a bit of a martian Ansell Adams moment for ya...

The focus was set on earth.

Cool.

There's just too much going on! I must have missed these cloud images. Could somebody (re)post a link?

On reflection, the astronaut actually spoils it...



( ngunn: the images I referred to weren't specifically of clouds, they were just visible on Hazcam pics, so you didn't really miss anything, as such. )

Thanks, Stu. I have noticed that there is quite a lot of Pancam sky imaging going on in the instrument schedule but I don't remember seeing any pics - thought you might have found them somewhere. I guess they're not a high priority for relaying to Earth right now.

The first little bit of the Duck Bay pan is down.



James

Would love to see a sunset from where we are now...



(be gentle with me, this is my very first play-about with Photoshop Elements... will get better, I promise! )

Stu,

Would you believe it's my first stitch !!!!
So, be gentle with me too.
I love when Oppy behaves like a buggy :


BTW : good try Stu, lack of light but vey evocative

The sun was shining on the sea,
Shining with all his might:
He did his very best to make
The billows smooth and bright—
And this was odd, because it was
The middle of the night.

Don't give up your Poet Laureate job, Stuey.

Okay, I won't... but going to keep trying anyway...

I have been trying to post this in the "Clouds" thread for the last half hour but nope, it just won't frakking let me.... anyway, this is what a silent night at Victoria might look like...




(although some Mars experts suggest that the planet's night sky might be tinged red due to the optical refraction qualities of the dust in the air...)