Free Access

Table 1

‘OHANA Iki transmission error budget, compared to measured transmission.

Quantity Transmission

Photon flux at J = 0 94 673 ms-1

Telescope transmission 22.6%
Fiber transmission 0.3 dB / km×300 m 97.9%
Fiber head Fresnel reflection loss (95.6%)4 83.5%
Delay line transmission (98%)10 81.7%
Detector quantum efficiency 45.0%
Total 6.8%

Expected per telescope 6438 hν/ ms

Measured per telescope 283 hν/ ms

Notes. See text for a discussion on the discrepancy.

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.