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First data from Venus Express !
Rakhir
post Apr 13 2006, 03:22 PM
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Unexpected detail in first-ever Venus south pole images

http://www.esa.int/SPECIALS/Venus_Express/SEMUTYNFGLE_0.html
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JRehling
post Apr 13 2006, 04:24 PM
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Good stuff. Kudos to the team for successful operations and a quick first release.

I'm curious as to the wavelengths in the dayside image. It's probably stretched beyond "human" RGB to show that much detail, but it would be fantastic to have a multispectral dataset and sate some curiosity about what a "true" color spacecraft image of Venus would look like. VEx will answer this question as well as one could expect.

The IR nightside makes me wonder about the prospects of seeing the surface through the cloud layers. That's a whole lot of cloud signal. Maybe greater temporal coverage will show us the surface in peeks here and there. Also, other IR may show the surface signal better.

I'm surprised how the UV image looks -- quite different from the Pioneer images. Lots of calibration questions.
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Rakhir
post Apr 13 2006, 04:55 PM
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QUOTE (JRehling @ Apr 13 2006, 06:24 PM) *
Good stuff. Kudos to the team for successful operations and a quick first release.

We just have to hope that the next releases will be as quick as the first one.
However, given the PR history and what was available for the VOI, it is probably only a dream rolleyes.gif
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ollopa
post Apr 13 2006, 05:37 PM
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Anyone here smart enough to work out the lat/lon gridlines for these first images? Presumably a half decent astronomy programme would at least tell where the subsolar point was on Venus @ say 9:07 UT on the 11th..
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JRehling
post Apr 13 2006, 06:33 PM
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Well, since the axial inclination is only 3 degrees, you can count on the apparent pole always being pretty close to the actual pole. There's only one real degree of freedom in the subsolar point.
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dilo
post Apr 13 2006, 08:27 PM
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UV map seems to show surface details, but this should be only my impression (atmosphere should be more transparent in IR and visible features do not match with radar maps around south pole...).
Attached Image

This is a small, naif combination of visible + UV image (former was veirated toward red while latter was detail/contrast enhanced).


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Julius
post Apr 13 2006, 09:23 PM
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The deepsest features visible are estimated at 55 km above the Venusian surface.Thats according to ESA website.
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Posts in this topic
- Rakhir   First data from Venus Express !   Apr 13 2006, 03:22 PM
- - JRehling   Good stuff. Kudos to the team for successful opera...   Apr 13 2006, 04:24 PM
|- - Rakhir   QUOTE (JRehling @ Apr 13 2006, 06:24 PM) ...   Apr 13 2006, 04:55 PM
|- - ollopa   Anyone here smart enough to work out the lat/lon g...   Apr 13 2006, 05:37 PM
|- - JRehling   Well, since the axial inclination is only 3 degree...   Apr 13 2006, 06:33 PM
|- - dilo   UV map seems to show surface details, but this sho...   Apr 13 2006, 08:27 PM
|- - Julius   The deepsest features visible are estimated at 55 ...   Apr 13 2006, 09:23 PM
|- - JRehling   UV shouldn't ever show surface detail, I don...   Apr 14 2006, 01:11 AM
- - BruceMoomaw   Nope, UV NEVER punches through to the surface -- b...   Apr 14 2006, 01:48 AM
- - deglr6328   Even if the atmosphere were cloud-free I suspect t...   Apr 14 2006, 05:08 AM
- - elakdawalla   I got some more info out of Kevin Baines about the...   Apr 14 2006, 10:41 PM
|- - RNeuhaus   QUOTE (elakdawalla @ Apr 14 2006, 05:41 P...   Apr 15 2006, 01:01 AM
|- - 4th rock from the sun   QUOTE (elakdawalla @ Apr 14 2006, 11:41 P...   Apr 16 2006, 12:32 AM
- - BruceMoomaw   Not at all -- no radar on this one. However, VIRT...   Apr 15 2006, 02:25 AM
- - RNeuhaus   I was not aware of Planet Fourier Spectometer (PFS...   Apr 15 2006, 01:29 PM
|- - Rakhir   QUOTE (RNeuhaus @ Apr 15 2006, 03:29 PM) ...   Apr 15 2006, 01:34 PM
- - Decepticon   Did anyone catch the Venus Express TV Special on S...   Apr 15 2006, 04:39 PM
- - Sunspot   http://news.bbc.co.uk/1/hi/sci/tech/6041570.stm S...   Oct 11 2006, 10:01 PM
|- - helvick   QUOTE (Sunspot @ Oct 11 2006, 11:01 PM) ....   Oct 11 2006, 10:28 PM
- - djellison   Well - stuff should start hitting the PDS soon.......   Oct 11 2006, 10:30 PM
- - Rakhir   A new press release for VEX but just two images ...   Oct 13 2006, 01:06 PM
- - elakdawalla   Two more images and one more movie have dribbled o...   Nov 9 2006, 07:16 PM
- - MarkL   Well it's a fairly boring mission from my poin...   Nov 13 2006, 03:41 AM
- - Sunspot   Anyone see the recent Sky at Night special on Venu...   Nov 13 2006, 09:48 AM
|- - ngunn   QUOTE (Sunspot @ Nov 13 2006, 09:48 AM) S...   Nov 13 2006, 09:57 AM
|- - ustrax   Hot! Hot! Hot!   Dec 14 2006, 09:46 AM
- - djellison   Yup - I was watching very closely.....did you spot...   Nov 13 2006, 09:54 AM
- - elakdawalla   In case ustrax wasn't clear, there is a new ...   Dec 14 2006, 05:23 PM
- - volcanopele   Nice write-up about this on your blog, Emily. How...   Dec 18 2006, 10:48 PM
- - Phil Stooke   Yes, the Magellan map is modelled temperature base...   Dec 19 2006, 02:00 AM
|- - djellison   QUOTE (Phil Stooke @ Dec 19 2006, 02:00 A...   Dec 19 2006, 08:39 AM
|- - scalbers   QUOTE (Phil Stooke @ Dec 19 2006, 02:00 A...   Dec 20 2006, 04:35 PM
- - edstrick   The trick will be to minimize interference from va...   Dec 19 2006, 09:42 AM
- - remcook   QUOTE But to me it looks like the second map shows...   Dec 19 2006, 09:56 AM
- - elakdawalla   QUOTE (volcanopele @ Dec 18 2006, 02:48 P...   Dec 19 2006, 05:43 PM
- - Phil Stooke   The VIRTIS map from ESA is labelled with negative ...   Dec 20 2006, 05:37 PM
- - edstrick   "... Curse the backwards rotation of Venus...   Dec 21 2006, 08:06 AM

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