Altitude and Visibility check

From ChukPyong竹濱　to Ulleungdo鬱陵島

Altitude2M/Ca,era posisiton +12M/50mm Lenz  Not visible

Altitude2M/Ca,era posisiton +25M/50mm Lenz  Not visible

Altitude2M/Ca,era posisiton +50M/50mm Lenz  Not visible.

Altitude2M/Ca,era posisiton +100M/50mm Lenz　　Slightly vivible as two island???

Altitude2M/Ca,era posisiton +200M/50mm Lenz　Visible as One island.

Altitude2M/Ca,era posisiton +400M/50mm Lenz　Visible as one island.