I want to make it clear.. I am not denying the truth of what anyone has posted. I am just saying that what the scanner is currently doing in supercruise is not what the manual says it is supposed to do.
The manual doesn't say it does what it is doing now or that it does what you said. I don't know, there may have been a time when it was doing what you said..
Personally, I think there is a very good chance the manual is wrong.
..............
Actually you are wrong again:
"Sensor Disc Changes: While travelling in super cruise the sensor disc operation changes
slightly. The scale automatically adjusts to show stars and planets within a 2 minute time
horizon from your ship, based on the maximum speed your ship could currently achieve after
all stellar body proximity impediments are taken into account.
Ships are automatically visible within a 40 second time horizon, based on the fastest ship’s
speed.
When you lock a vessel into your ship’s targeting computer, the scale of the sensor disc
automatically changes so that the target is approximately half way between the centre point of
the disc and the outer edge, to maximise legibility"
That is directly quoted from page 72 (p37 in a pdf viewer) of the current manual, v2.4 (part of the "Travelling in Supercruise" section).
So basically, what we have been telling you and which you have steadfastly refused to accept.
(Yeahh - I got so annoyed at being disbelieved that I actually went and read the versions of the manual I have on disc - it is on page 70 of the 1.04 manual and the 1.05 version from back in 2015.)
You really REALLY don't like to admit that what other people tell you is accurate do you?