Hi Don,

Hope you don't mind but I took the liberty to ask if it would be possible to mod the OBS scope in the Better Scopes topic: http://www.subsim.com/radioroom/show...d=1#post567340

I also quoted your findings...hopefully they might be able to provide some input. I'm sure the cameras.dat file could be modded to give us the necessary scope movement. The it would *only* be a question of scaling the OBS marks to measure degrees given some knowledge of the celestial sphere in SHIV. At least thats what i think....

Tnx Mav and minimax, those websites are very useful.

@ Uber.

Great Job :rock: Don't know why we didn't think of doing it earlier...another set of eyes and another brain. :lol:

@Uber Gruber
very good idea!


next test:

7.Jan'42
my position: 27°55'N 175°00'E (hold it all the day)
starting position (= base time) 179°E = UT1+12


SR:
upper edge: 07:03
red light off: 07:15
lower edge: 07:27

sun at 180° 12:31

SS:
lower edge: 17:23
red light on: 17:36
upper edge: 17:47 (uncertain)

sun culmination:
upper SR + (upper SS - upper SR)/2 = 12:25
red light SR + (red light SS - red light SR)/2 = 12:25,5
upper SR + (upper SS - upper SR)/2 = 12:23

sun culmination as shown in "Nautic Tools": 12:26

http://www.wamotec.de/tmp/messungen/sonne_01.jpg


my conclusion:
although SS and SR aren't correct,
thats realy god for appoint longitude by using the red light.

Butr there was no chance to get an angle at culmination.

next test:

shot of Solaris (I've no reality - practice in shooting stars :( )

my position: 27°45'N 175°00'E
7. Jan 42 20:05 basetime = 08:05 GMT


Solaris is 27°30' above chine (it's very hard to read)

but it should be 20°28' - am I right?


http://www.wamotec.de/tmp/messungen/solaris_02.jpg



http://www.wamotec.de/tmp/messungen/solaris_01.jpg http://www.wamotec.de/tmp/messungen/sonne_02.jpg

It's a hughe factor what Angular Angle you have for the camara you are spotting through i would think...

Try measuring the same star at the same time just standing on the bridge.


This is another thing to CONSIDER when putting all this together - we need a uniform camaras.dat file for it...

As a curiosum - my best experience with zoom, angular angle etc. is zoom at 1, angular angle at 60 - after that we need to "make" or adapt a sextant image to this. I have done that and printed the sextant on a transparent overlay to hold up against the screen. Works decent enough. The image i have used is the sextant image from Vanjast's mod for SH-III

Do you have a screenshot of this?

And how do you get the sextant only on the external view?
(moveable?)

the sextant is not on my screen. Its physicaly printed on a transparent paper. I then stick it up on the screen with my greasy fingers. So i can actualy have it both on the bridge and inside the sub :doh:

thats great! It IS movable ;)

Hmmmmm - if we give the observation scope 50 deg of Angular Angle (Field of View in degrees) then you should have your sextant - being able to measure 100 deg. with two looks

What you would then need is a different optical divider set that gives divitions like a sextant instead of a scope.

This would though render the scope useless as a scope...

I'd be happy to render the OBS scope useless in order to have a sextant. No reply from the scope modders so far, might be an idea to list exactly what needs to be done and then PM them.

Heh ÜberGruber

I am the guy that mods the view angles - so in the cameras.dat department we are ready to go.

What is needed is a new graphical overlay with tickmarks (one for every degree would be preferable) that covers 45~50 degrees. Depending on what we want to run with.

Ill toss a cameras.dat file together tonight with an altered Observationsscope.

Mav:

Drive safely. :up:

We're waiting patiently.

In order not to screw you guys...

Would any of you know what Angular Angle you have on the Conning Deck view in you cameras.dat file........

If i make a file from mine, where it is altered to 60 from 75 then i think your printed sextants (if you use such) will be FUBAR.

I have made one file with the angular angle of any outside view i can think of set to 60 (this is what is giving the best look and feel imo, and it gives larger details as the heaven is not compressed so much). This file is ready for upload - should you desire it.

Well done, Mav.

I'd like to try it, sil vous plait.

Tnx,

OK - its up for useage on this spot

http://files.filefront.com/EXPERIMEN.../fileinfo.html

WARNING - its a modded cameras.dat file from my cameras mod. That meens that the attack scope and internal cameras have been altered. The external cameras have a AA on 60 deg. (most fittable for a real eysight that has 57,265 deg's of angular angle (or Field of View in deg's)

The angular angle for the observationsscope has been set to 45 deg. - this should enable us to use the scope in two positions to cover the full 90 deg's. AKA the new overlay would need 45 markers on the lens in order to cover the needed field. I have no idea how much a factor image distortion is playing in - but that will have to be of later work. With 60 deg of Angular Angle it looks like (in 1280x980) that there is next to no distortion in the center of the screen.

If someone could at least post a pic of what you imagine the sextant to look like in the OBS Scope i am sure it would be easier to do the graphical overlay. Right now I am sort a :o As i never really got in to the "hard core" side of playing the game (manual navigation and what have you) Did not Vanjast try to do a sextant mod when SH4 came out...?

The observations scope image as it is - only 45 deviders verticaly

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and so on.....

Ahhh ok...Right now I am totally worked out from RL work :p
If no one beats me to it, I might give it a go towards the week end.
Best guy for this one would be l3th4l, but as I said, i have a look at it later in the week.

I agree. I've been watching this thread too. Sextant navigation would be the ultimate in realism as far as I'm concerned. l3th4l or CaptainCox might be able to get us a sextant on the obs scope and I know for sure that the obs scope can be adjusted to have the elevation we need (if it doesn't already go to 90 degrees).

After that we'd have to make some tables for players and explain how to navigate using a sextant. But the big problem would be that the charts in the game start centred on the sub and there are other navigational aids that are automatically entered on the map too. I guess we could avoid using the game's chart and have a set of hard copy charts, but that might be expensive. The best option would be to somehow stop the game from centering in on the player's sub and to remove all the stuff that automatically shows the sub's position.