GMOS-N CCD Upgrade Update
Figure 21.
The new GMOS-N
detector array
showing the three
new CCDs, which
consists of two
different types of
detectors: the two
outer detectors (left
and right) have
an improved red
and blue response
compared to the
middle detector.
The Gemini-North Multi-Object Spectro-
graph (GMOS-N) is currently being upgrad-
ed with a new detector array (Figure 21),
consisting of three CCDs manufactured by
Hamamatsu Photonics. During February, the
commissioning team successfully installed
and aligned the new array in the Gemini
North lab. In early March, following the CCD
installation, GMOS-N was mounted back on
the telescope, where it passed the first light
milestone during on-sky nighttime commis-
sioning observations.
We expect the new Hamamatsu CCDs to
show improved red sensitivity compared to
the previous GMOS-N e2v deep depletion
detectors. The new detectors are similar to
those previously installed in GMOS-S. Fur-
ther information and updates are available
on the Gemini North night log summary
pages; watch for updates in our monthly e-
newscast and on the instrument availabil-
ity webpage.
January 2018 / 2017 Year in Review
GeminiFocus
77