Mav87th

Hey Snakeeyes

Im not sure with what numbers is used in the mod here, but the good news is you can test the "optics" out your self.....and its rather easy

If you like i can email you a mission for SH-4's subschool where you can test it with the below method.

Test parameters:

Vs. a Kiturin Maru that in the ONI-208-J manual is listed with a length of 427 ft. The Maru is listed with an A, with indicates that its certain data. Im hoping the dev's made the ship from good drawings

Angular Length and Linier Lenght for this ship placed at 400 yards. is

((427ft. / 3) / 400 yards) * 57,3 = Angular Lenght (20,4°)

So the Kiturin Maru should fill 20,4° of vision at 400 yards range

The real scope has two levels of zoom, x1,5 and x6. It has some tickmarks horizontaly and verticaly. Each time there are three tics there is a hashmark. (see top post image in this post http://www.subsim.com/radioroom/showthread.php?t=134349)

In x1,5 scope (low power) 20,4° is the same as 20,4 ticks in total as each tick mark is 1 deg. In x6 scope (high power) its 81,5 ticks in total as each tick here only represents 0,25 deg.

The ship was in mission editor placed at 366 meters (equal to 400 yards), 732 meters, 1098 meters 1464 meters and 6862 meters away

The targets should fill the below amount of tickmarks in your high power zoom (x6 zoom) and in low power zoom (x1,5 zoom)
High - Low
81,6 - 20,4 at 400 yards
40,8 - 10,2 at 800 yards
27,2 - 6,8 at 1200 yards
4,4 - 1,1 at 7500 yards

The formula to figure this out is the following: (ship lenth in yards / Range in yards ) * 57,3 = Angle in degree's

In low zoom each tick is 1 deg.
In High Zoom each tick is 0,25 deg.

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In my periscope mod i have the zoom levels of the scopes set to 1,5 and 6 and then i have calibrated the angular angle value so the linier length's of the Kiturin Maru is correct. And its correct at all ranges. This enables manual stadimeter shots without having to ID the ship first, It allso works 100% with the ship id'ed only when this is done you NEED to take the stadimeter reading from the point that has been entered into the ships dat file as the mastheight (it could be the funnelheight and then you need to take the reading on the funnel).

I could point you around to different posts, but i would rather on request give you a guiding to how to fix it in your own install, as its a bit complicated to shuffel around to different postings.

First of all test the scope you have now, it might be correct - making any further work redundant