Venus Full Disk -mariner 10 Options

[Malmer]

Hi!

I have just finished compositing this large Venus panorama from Mariner 10.

I have tried to generate natural colors for the planet using orange and UV filters.

Raw frames: FDS 58870-59038
I used 78 frames in that range and then picked out a few other frames to fill in the gaps. There where about 5% missing data.

I did dark subtraction and flatfielding. for flatfields i used the venus images that looked flat enough.

Does anyone have any information on camera linearity and stuff?
I cant seem to find the calibration report; "MVM 73 TV Subsystem Calibration Report". if anyone has it, please let me have a look!

The full panorama is 4000*4000 pixels.

All processing is done in either floats or 16bit.

Take a look!
/mattias


Venus realistic colors

Venus enhanced colors

Venus in UV

[Malmer]

I agree on the fact that using UV filtered images to create visible light is a bit dubious at best. looking at the blue and orange filter images gives a more realistic look. I do however think that since venus is so bland in orange and blue that the eye might pick up whatever detail that the deep blues might contain? (guessing here)

I think that if I where to make an even blander version of the first image it would be close enough to reality.

But really... how fun would it be to painstakingly stitch together 80 raw frames if the result is a perfectly smooth sphere

Venus Express and Messenger might clear things up.

Mattias

[4th rock from th...]

....
I do however think that since venus is so bland in orange and blue that the eye might pick up whatever detail that the deep blues might contain? (guessing here)
...
But really... how fun would it be to painstakingly stitch together 80 raw frames if the result is a perfectly smooth sphere
...

Well, I've never seen any color on Venus through a telescope, but the polar areas do look brighter. But I never saw any dark bands or areas! Just a white disk with some light patches and bright poles with absolutely no color.

So the dark UV markings might be just an interpretation of the data. Those areas could be as bright in the UV as they are in the visible. The bright UV areas are really much brighter, and they "leak" into the extreme blue. You don't see the color variation, but do see a bright are. (off course, I might be wrong )

Anyway, lets wait for the next probes to arrive and see what the planet look like.