FAQs
Does GMACS have a flexure control system?
Yes, fibers rigidly attached to the slit mask holder are imaged by auxiliary CCDs at the focal plane to detect flexure. The focal plane is mounted on a five-axis stage to remove flexure. Stability goal is <0.25 pixel.
How long does it take to configure for a new field?
Less than 300 seconds.
What are the science CCDs?
An 8K by 12K array for each channel with 15µm pixels. Deep depletion CCDs will be used in the red.
What is the image scale at the telescope focus?
1″ ≈ 1.04 mm
What is the pixel scale at the detector?
A 15µm pixel subtends 0.05″ so binning by ~3 might be typical.
Can GMACS be used as an imager?
Yes, but will be limited by scale change with wavelength (lateral color). Do you want to use GMACS as an imager? If so how?
Can GMACS be used with GLAO?
Yes
What is the minimum exposure time?
≤ 1 second
