System Calibration Techniques Session
U. Schreiber and F. Koidl
|Title of Paper
|Five Target System Calibration
|New Internal Calibration Target at SGF Herstmonceux; Design
|MLRO Performance Characterization
|Portable Pico Event Timer 2 Khz
|Tests of the Stability and Linearity of the A031et Event Timer
at Graz Station
|Mount Model Stability
|Signal Strength Monitor for C-Spad Receiver
Five Target System Calibration (John Luck)
Having five terrestrial calibration targets and having still up
to a few mm uncertainty gives us an idea about what errors we might
introduce with the "ONE" target systems. Even if the conclusion of
John's talk might be: The happiest guy must be, who has NO calibration
Stations are emphasised to think about a "Multi Calibration Target"
New Internal Calibration Target at SGF Herstmonceux (Victoria
Vicky talked about their new "Short" calibration target which was
built and tested at the Herstmonceux station. But doing careful comparisons
proved again John's theory perfectly.
They also have to solve the question: What is the true calibration
MLRO Performance Characterisation (Guiseppe Bianco)
Pippo gave us a nice summary of the stability of the Matera station.
Lageos RAW Data RMS is around 5mm. The station stability is at the
Portable Pico Event Timer 2kHz (Karel Hamal)
Karel gave us a short overview about the history of the PICO EVENT
Timer and ended up with the last version, which can handle now repetition
rates up to 2kHz and having still the well known accuracy and linearity.
Tests of the Stability and Linearity of the A031ET Event
Timer (Ludwig Grunwaldt)
Lutz presented us his new Event Timer (Riga Counter), which seems
to be a quite cheap but very good alternative to the high price segment
used in the SLR community. The results of the timer comparison showed
that the linearity and stability is within a few ps!
Mount Model Stability
John presented a highly sophisticated method to calculate an accurate
Mount Model. It should be possible to have it stable down to 1.5
arcsec. But of course to have a "STABLE" mount is the most important
thing and will solve the modelling problem in the most elegant way.
Signal Strength Monitor for C-Spad Receiver (Ivan Prochazka)
Ivan presented us their small electronic device, which is determining
out of the time difference between the compensated and the uncompensated
output of the C-Spad, the signal strength of the return signal.