Venus in IR (Astronomik ProPlanet 807) and UV (W47 + BG39) light.

IR mapped as red, UV as blue, and green is a 50/50 combination of the two.

I used the 5x powermate (and a dispersion corrector) for a change, which pushed the focal length a bit further than usual (I usually image with a 3x and a filterwheel + ADC and then the camera)

Here is a comparison image of Venus on March 22 and 23.

In both cases I used UV as luminance (and UV = W47+BG39)

Then the RGB was mapped like this:
march 22: R-(g)-UV
march 23: IR-(g)-UV
where (g) is a synthethic green channel (just the average of the other two). On March 22 I didn't capture IR, so I just R for red ;) The IR and R recordings were very much comparable, as I didn't process them hard at all (so all the color information basically comes from the UV channel).

Here is a small animation in UV light (with a W47 filter) showing clouds moving rapidly on Venus. The animation spans only 35 minutes.



The still image shows Venus in UV-RGB.

Venus under excellent seeing conditions.

UV-RGB recording, with UV=W47+BG39 filer, RGB = astronomik rgb filters

The seeing seemed pretty decent, but the transparancy was very poor this evening. I only managed to take one quick run of images from uv, b, g, r to ir in a couple minutes time, before Venus disappeared behind the clouds completely. Attached is the rather soft looking RGB result.

Venus in poor seeing (altitude only 19 degrees)

Animation showing the differences in cloud structure in Ir and UV light

Animation in infrared light (>807nm)
North is up (usually I have south up, but I\'m too lazy to change it ;) )

16:23 - 18:20 UTC

Through rgb filters:

Animation of two stacks of recordings in infrared light (>807nm) taken 45 minutes apart.

You can see some cloud structures moving on the planet.

Seeing was not very good (but hurray for long wavelengths!), next time I hope the clouds don't interfere with imaging, because it would be nice to get a longer/smoother animation.

False color image of Venus using an Ir-pass filter (>807nm) and a Schuler UV filter. Ir was used for luminance.