Comparison of G230MB and G230M

The trade-off between using the G230MB or the G230M (which uses the NUV-MAMA) grating modes, depends sensitively on the science goals and your source properties. Figures below show a direct comparison of some of the properties of the G230MB and G230M modes. For red objects, CCD data can suffer from scattered light problems (see Section 4.1.6).  See also Comparison of G230LB and G230L.

Figure 13.28: Comparison of Limiting Magnitudes and Fluxes for G230MB and G230M.

Plotted are the limiting source magnitudes and fluxes for G230MB and G230M to achieve a signal-to-noise ratio of 10 per 2-pixel spectral resolution element integrated across the PSF, in 1 hour. The prediction due to the Charge Transfer Inefficiency (CTI) effect, computed for the year 2005, is also shown.
Figure 13.29: Comparison of LSFs for G230MB and G230M.