Dave K wrote:
Mottley wrote:

Hi there

not a good idea to set the rate at more than 5 sec. At the recent
Russian Qualifiying Grand Prix an experienced pilot had a sample rate
of 10sec and missed his last control point and bagged himself a 5
minute penalty. He claims his logger beeped but the trace shows clearly
that he did not make a point inside the TP area which was parallel to
the track for the finish. Checking in SeeYou showed his recording
points just before and after the TP Tangent. Within these 10 seconds he
propably did fly into the Sector and out of it again.

Regards
Bruno

When I started analysing traces in 1993 (UK overseas Nationals) the
standard thing was to set it to 10 second sampling. It was very rare
not to have a point in the TP sector. However, it did happen and we
just pulled the films - which were always in (how can you prove 1m
accuracy on a photo?). Some pilots would increase the rate close to the
TP, or mark the trace as they turned in the sector. No doubt things
have moved on...

Dave Kearns
There were some photos with the wingtip pointing at the turnpoint and
the buildings leaning the wrong way, only proving the glider was
somewhat inverted and possibly short of the turnpoint.

Frank Whiteley
(UK Opens photo, GPS, scoring team '93, '94)