NAOJ GW Elog Logbook 3.2
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RaffaeleFlaminio - 23:59, Thursday 16 March 2017 (419)
Measurement of the ROC of the 4" telescope mirror
Participants: Capocasa, Flaminio
We checkd the ROC of the 4" telescope mirror. To do that we used the mirror to focus the
image of a lamp placed at distance D1 and measured the distance D2 of the image from the mirror.
When the two distances are made equal D1 = D2 = 6.05 m = ROC of mirror.
The error of the measurement is about +/- 2 cm.
The specification was 6 m +/- 0.3 m. Looks good.
We checkd the ROC of the 4" telescope mirror. To do that we used the mirror to focus the
image of a lamp placed at distance D1 and measured the distance D2 of the image from the mirror.
When the two distances are made equal D1 = D2 = 6.05 m = ROC of mirror.
The error of the measurement is about +/- 2 cm.
The specification was 6 m +/- 0.3 m. Looks good.