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02-22-21, 08:17 AM | #91 |
Grey Wolf
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I like it a lot! So far so good on testing by the way, will continue tonight.
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02-22-21, 08:50 AM | #92 |
Stowaway
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Updated Excel table for CelNav calculations (added a field for entering Sun semidiameter), for the convenience of testing NewSextant by the Sun.
https://drive.google.com/file/d/1l1J...ew?usp=sharing |
02-22-21, 09:57 AM | #93 | |
Navy Seal
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One question Alpheratz...As I said before, I'd like to add 30% smaller sun/moon then what you have now in the test update. Would that effect in any way your documentation? I mean, I don't want to create any unnecessary extra work for you. As far as I understand these stuff now, only sun/moon diameter had to be precised in the New Sextant scripts and we are good to go? Am I correct? Here is a small mod to demonstrate smaller Sun and the Moon...https://www.mediafire.com/file/c4zuq...%2525.rar/file
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02-22-21, 10:12 AM | #94 | |
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02-22-21, 10:17 AM | #95 |
Navy Seal
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Excellent! In that case please add new Sun and Moon to your test setup and tell me how it goes. I've calculated sun/moon diameter to be something like 1.74, but you should double check my calculations...
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02-22-21, 10:41 AM | #96 | |
Stowaway
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OK, Vecko, i was investigating the possibility of using the Moon for celesial navigation and came across inconsistencies that are hardly possible to eliminate. I compiled Moon Almanac 1939 - 1945 based on a real Moon and found out that there are differences from SH5 Moon. I find it extremely difficult to perform the same correction for the Moon, similar to the one I did for the Sun, due to the complex pattern of the Moon's motion. For this reason, I did not include Moon Almanac in the documentation and did not raise this issue in my videos. Last edited by Alpheratz; 02-22-21 at 10:50 AM. |
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02-22-21, 10:56 AM | #97 | |
Navy Seal
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https://www.mediafire.com/file/c4zuq...%2525.rar/file
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Anyway, being able to navigate with Sun and at least few stars is still really awesome and unprecedented.
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Best regards... Vecko The Wolves of Steel v2.2.25_SH5 Expansion Pack_Full The Wolves of Steel v2.2.xx to v2.2.25 - Update PDF Install Instructions How to report an issue If You wish to support my work... |
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02-22-21, 11:06 AM | #98 |
Navy Seal
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And here is the new test update No 7 which includes all previously mentioned tweaks, updated documentation, samller sun/moon, set sun/moon diameter in scripts ect...
Note that in this version, New Sextant will become available in your JSGME only after you enable the main Real navigation mod in order to avoid some badly arranged mod lists... Also , compatibility with other conflicting mods (auto ship recognition and campaign advance verifier) is now fixed so enabling order is not important anymore... The mods will automatically "make them self compatible" as you enable them one by one in your JSGME... https://www.mediafire.com/file/fb6av...Test7.rar/file
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02-22-21, 11:52 AM | #99 |
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The new Sun and Moon have the following dimensions:
SEXTANTSUNDIAMETER=1.61555555555 SEXTANTMOONDIAMETER=1.5125 I was lucky to find NewSextant mod. I found it almost immediately after it was published, but I was not immediately able to appreciate its merits and the reason why it was made that way. Now, after years of researching celestial navigation in Silent Hunter 5, this mod seems to be the most thoughtful and graceful, the "golden key" that finally opens up Celestial Navigation for us in Silent Hunter, we have all been waiting for it. I was especially pleased with the fact that this mod turned out to be so flexible that it became possible to introduce into it my developments regarding the correction of celestial coordinates. Thanks to Vecko and derstosstrupp for working on this as a team. Last edited by Alpheratz; 02-22-21 at 12:11 PM. |
02-22-21, 12:11 PM | #100 | |
Grey Wolf
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Ask me anything about the Type VII or IX! One-Stop Targeting Shop: https://drive.google.com/drive/folde...WwBt-1vjW28JbO My YT Channel: https://www.youtube.com/channel/UCIJ...9FXbD3S2kgwdPQ |
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02-22-21, 12:42 PM | #101 | |
Navy Seal
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Maybe I created some mistake in my calculations or it's simply measurement error? These are two pictures which I used and I got ~ 1.74 value for Sun (zoomed in to check my measurement)... Is my calculation OK? Did I measure upper and lower limb incorrectly?
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02-22-21, 01:03 PM | #102 |
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No, the error is not in the calculations, but in the measurement technique. All measurements are recommended to be carried out using the Fine aiming line, which is activated by pressing this button.
When measuring, it is necessary to capture the extreme row of pixels of the lower and upper extremities of the solar disk. In addition, measurements of the diameter of the Sun should be carried out on a pause. Otherwise, between the first and second measurements, the sun can change its altitude by a certain amount, the profile of the solar disk (outlines, set of pixels) also changes by crosshair movement - this is purely "computer reason" introduces an additional error of measurement. You can check your measurement method yourself: take 5 measurements - if the variation is more than 0.3 arc minutes, then the quality of the measurements is poor. In my series of 10 Sun measurements, the variation (difference between Max and Min result) was 0.2 arc minutes. 1.61666666 and 1.61333333. I took the average of 10 measurements as the result. Last edited by Alpheratz; 02-22-21 at 01:51 PM. |
02-22-21, 01:32 PM | #103 | |
Navy Seal
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Thanks for clarification... But, there is one problem (I think). I've always suspected that measuring by stadimeter button (AKA fine aiming line) is introducing certain degree of error depending on how much stadimeter is moved up. That's why avoided to use it in my measurements... Later I'll post few screenshots to demonstrate this "error". It could be that imprecision in aspect ratio fixes are effecting sextant function both from normal periscope/UZO and from sextant as well. In his video, YS is also avoiding to measure altitude by using stadimeter button...I wonder, is it because of this reason...
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02-22-21, 01:38 PM | #104 | |
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At one time, I investigated in great detail all the reasons causing errors in measurements, this is how my video "3 secrets ..." was born, where I summarized my many years of experience in 5 minutes. |
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02-23-21, 08:14 AM | #105 | |
Navy Seal
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I experimented a bit with cameras.cam values but I couldn't find any parameter which has any effect on this error... There must be something in the files which effects stadimeter behavior, I just hope it isn't hard codded. We may have problems in situations near the equator when the Sun is high, like 80+ deg, but again, with some resourcefulness and little bit of math, the error can be ruled out during the calculations...
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Best regards... Vecko The Wolves of Steel v2.2.25_SH5 Expansion Pack_Full The Wolves of Steel v2.2.xx to v2.2.25 - Update PDF Install Instructions How to report an issue If You wish to support my work... |
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celestial navigation, sextant |
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