Celestia Forums

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John,

I inspected your remapped moon and noted within the northern 30 degrees, some repetitive dark coloration pattern (vague vertical "stripes"), mostly to the left of the central meridian.
Don't remember having seen them before on my own textures.

Rest looks good. Which scientific sources did you use precisely(links)?

Fridger

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thanks!

I'll have a look...

Fridger

EDIT: This is an edited version of my post
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Well John's remapped 8k Moon base texture is really an improvement. Let me show some nice views with it.

No double lines anymore (only the leftover artefact stripes that we all know about)
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I used my own 8k Kaguya normalmap version, as produced with my Nmtools.





Quite some progress compared to what we had before...

My final image is a screendump with full illumination of the Moon's disk



Fridger

t00fri wrote:Now here I think something is not quite right! (being NOT John's fault however!!)
As you can see, the disk appears practically featureless! That is NOT what I see when watching the Moon at night with naked eyes... Is it due to Lambert?

It looks like the albedo map isn't being used at all in any of your screen shots.

--Chris

chris wrote:

t00fri wrote:Now here I think something is not quite right! (being NOT John's fault however!!)
As you can see, the disk appears practically featureless! That is NOT what I see when watching the Moon at night with naked eyes... Is it due to Lambert?

It looks like the albedo map isn't being used at all in any of your screen shots.

--Chris

My God, YES, you are right. Too many experiments on the fly... The PNG extension on John's 8k texture was missing. I'll edit the above shots .

Fridger

Aha! You are using some anti-pinch over there! My Schr?dinger doesn't look as good!
Guillermo

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john Van Vliet wrote:

t00fri ???? the extension missing ? .png
is this on a win box with the default " hide ext. of known types " turned on
...

As so often, I was in a hurry and had no time left for a cross check. In extras/solarsys.ssc for modified textures, I had entered your remapped albedo map, like so:

Texture "8kMoon_remapped"

forgetting the .png extension of the file . This then gave that somewhat strange-looking normalmap display without the albedo map being used ...

Fridger

PS: @John: indeed, on your above comparison plots, the improved matching is very well visible. My complementary images make it evident that double lines did NOT reappear elsewhere after the remapping.

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John,

I had a look at your remapped 16k Moon texture with Celestia, after converting the .cub to a 85% quality JPG. Your remapped texture now seems to be perfectly matching the Kaguya normalmap, but --as we know too well -- the thick black bar artefacts are horrendous! I have previously tried plenty of tricks on them at 64k level, but did not succeed satisfactorily. The various ISIS3 tools can very well eliminate those bars automatically, but at the dear expense of a replacement with structureless gray bars . The latter are not so conspicuous but ...

Anyhow, the sharpness and general definition of the craters in the pole regions is quite high and thus pleasing. Here is a nice example:




Fridger

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Can the cub files be converted to JPG or PNG with only linux tools (ISIS3) or is there a windows (commandline) tool available?

CAP-Team wrote:Can the cub files be converted to JPG or PNG with only linux tools (ISIS3) or is there a windows (commandline) tool available?

It's just ISISI3: isis2std is the name of the isis3 conversion tool.
There is a GUI interface for every isis3 tool.

The .cub format is ISIS3 specific and thus confined to a UNIX OS environment. No port of ISIS3 to Windows exists (yet).

Fridger

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