Nadir off by 5 degrees for heading.

[Pikey]

When entering LL or UTM to the NADIR the arrow seems to point 5 degrees left of the actual referenced point. Am i missing a button to get mag dec added? Something else?

[Pikey]

If it helps the compass appears to provide a different heading from the F2 view by the same. What do each of them represent magnetic or true?

[Ramsay]

The heading/bearing given by in the F2 view matches the F10 map/ruler.

 

So is aligned with the DCS "game grid" not True North or Magnetic North.

 

AFAIK the Gazelle compass and NADIR are aligned with Magnetic north.

 

The curvature of the spherical mesh (the black Geographic Grid in map options) for True North varies with latitude and longitude on the Caucasus map.

 

At Batumi

True = F10 map + 6°,

Magnetic = True - 6° = F10 map + 6° - 6° = F10 map

 

At Krymsk

True = F10 + 4°,

Magnetic = F10 - 2°

(assuming a +6° Magnetic declination to the east)

 

You cannot compare bearings on the F10 map without considering the geographic grid.

 

 

Inputting NADIR Lat/Long in DD MM.M has a 0.1 minute accuracy = +/- 93m (300 ft) as does your own starting position.

 

Note: When using the F10 map to measure the bearings of a runway and/or it's associated marker beacons, the F10 measurement = True North, regardless of what the Geographic Grid may suggest.

Edited June 7, 2016 by Ramsay