date | rectascension | declination | |
---|---|---|---|
Jupiter | December 5th | 4h14min | 20.3° |
December 10th | 4h11min | 20.2° | |
December 9th (calc.) | 4h11min | 20.2° | |
Saturn | November 30th | 3h40min | 17.2° |
December 15th | 3h35min | 16.9° | |
December 9th (calc.) | 3h37min | 17.0° |
You can find the calculated values by linear interpolation.
rectascension | declination | |||
---|---|---|---|---|
Jupiter | 4h11min 4.7s | 62.770° | 20°10'51" | 20.181° |
Saturn | 3h36min28.7s | 54.120° | 17°00'55" | 17.017° |
By this way, you will get the following result:
cos(d) | = | cos(90°-deltaJ)*cos(90°-deltaS)+ |
sin(90°-deltaJ)*sin(90°-deltaS)* cos(alphaJ-alphaS) | ||
= | sin(deltaJ)*sin(deltaS)+ | |
cos(deltaJ)*cos(deltaS)*cos(alphaJ-alphaS) |
Using this formula, you get the following result:
i.e., with an accuracy of about one promille, the same result as above!
Koblenz | Namibia |
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With an arbitrary graphic program (PhotoStudio, for instance),
you can determine the pixel coordinates of Jupiter, Saturn and the moon:
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Therefore, the scales of the pictures are:
Koblenz | 0,0257 o/Pixel |
Namibia | 0,0211 o/Pixel |
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296,59 | 7,62 | 115,11 | 2,96 |
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334,48 | 7,06 | 108,91 | 2,30 |
You can draw the either triangles into the same drawing scaled 1o/ cm, for instance.
This construction is in good coincidence with the combinated picture in our evaluation document.
By measuring the distance of the either positions of the moon one gets the following result:
The moon's parallactic displacement due to Koblenz and Namib desert:
1,2°
x | y | d | |
Koblenz | 322 | 165 | 459 |
Windhoek | 351 | 623 |
Because of the earth´s diameter of 768 pixels the distance, therefore, is
The straight line connecting them, therefore, has the length
latitude | longitude | |
Koblenz | 50o11´02´´ N | 07o32´16´´ E |
Namib Desert | 22o28´43´´ S | 14o56´59´´ E |
With the formula given in 2. b. ii. we get the following angular distance:
last update: January 10th, 2020