4MOST Helpdesk

4MOST will feature a 2.5 degree diameter field-of-view with 2436 science fibres in the focal surface that will be configured by AESOP, a fibre positioner ba...

While a Calibration Plan has not yet been established, a conservative assumption is that from the total amount of fibres, 50 fibres per spectrograph (i.e. 1...

Due to the delicate nature of fibre spines and fibre cables, and their impact on the performance of the instrument, special attention will be paid to monito...

All fibres for 4MOST are silica/silica, step-index, multi-mode fibres with polymide coating (buffer), with broad-band transmission from 350-2000 nm and nume...

No, there is one plate and the fibre allocation is fast enough that it can be efficiently executed during the telescope movement or CCD readout.

Using fibre attenuation data provided by the manufacturer, we can make an estimation of the throughput for diferent fibre lengths, however, the following sh...

Fibre crosstalk can be dealt with on different levels of 4MOST operations. Therefore, efforts are being made to develop an efficient observing strategy, cou...