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Using KLWP with T-UI by baerdric

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· @baerdric ·
$0.25
Using KLWP with T-UI
Actually this is KLWP, but it's to use on my T-UI launcher, soo....

I have a problem.

The relative positions of the planets in the sky around the Earth is correct, and the position in the sky (upper half of the circle) is correct if it were the Equinox. And for my real purpose, just to look cool and give me a general sense of the planets, it's correct enough. But to be really accurate, it has to take into consideration the length of day. For instance, the moon is just now about to rise, but it's been above the horizontal line of the reticule for almost three hours.

My thoughts about solving this are unpleasant to me. 

1) I can fudge it by making the circles into ovals that represent the tilt of the ecliptic at my latitude. Change the ratio every day when I update the planet positions. The rises will look a little closer to correct that way. 

2) I can fudge it by offsetting the circles downward a little. Again, it would look more correct, but it's not correct. Plus it would be ugly.

3) And this is the most painful. I can redo the math to make it correct. I would have to give it different speeds on the top half and the bottom half to represent the correct lengths of day and night. And I should also do the oval thing at the same time. It would make it correct. I hate that method.

But that's what I'm going to have to do. It's probably easier than I think (it would almost have to be), something like -

rotation=(original speed times (length of day divided by length of night)) ELSE (original speed times (length of night divided by length of day)).
 ![screenshot-1545787315734.jpg](https://cdn.steemitimages.com/DQmSLWXEGk2imbLXt2at7ASkaqaNg9oKMt77EmQzM8hZPPY/screenshot-1545787315734.jpg)
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vote details (14)
@ihashblox ·
Pythagoros has some interesting insights into the math behind celestial bodies.  Personally #3 might be best and clean.  As he always said every problem can be resolved by forming it into a triangle.  (60° ones')
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vote details (1)
@ryivhnn ·
I'm sure you're plenty capable of doing the maths (as it seems that it's the only solution that's going to be acceptable to you in the end no matter how much you don't want to do it XD).

What are you even doing?

<center>https://technonaturalist.net/sites/default/files/styles/sensible_display/public/art/2017/11/goatsig-t.png?itok=Ml3FDq7c</center>
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vote details (1)
@baerdric ·
Oh, sorry, this was a post from another forum where I had already explained in detail. I forgot I hadn't been putting that here too. 
This is a software Orrery that I wrote for my phone wallpaper. It calls up the positions of the Planets once a day, spaces them around the geocentric "sky" and then rotates it throughout the day. This gives me a general sense of where the planets are and what I can expect to see when I go out at night to smoke my pipe.

A fourth possible solution is to distort the horizon lines on the reticule. Fold the East and West pointing ones toward the north or south depending on the time of year. That would also give me an instant visualization of the length of day, and actually seems like a better solution as long as it doesn't end up looking funny.
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vote details (1)
@ryivhnn ·
 I love the random cool things you come up with. Sounds like a wallpaper people would totally download/buy if you ever made it available 😆

<center>https://technonaturalist.net/sites/default/files/styles/sensible_display/public/art/2017/11/goatsig-t.png?itok=Ml3FDq7c</center>

Posted using [Partiko iOS](https://steemit.com/@partiko-ios)
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