Here is the Installation report of the instrument. This report includes a table of available grisms and their characteristics and tables of measured count rates at the NOT. The field of view will be 6.5' by 6.5' and one pixel correspond to 0.19".
ALFOSC is equipped with a 2k by 2k thinned Ford-Loral CCD 15mu pixels. The chip needs UV-flooding. The chip has been somewhat damaged earlier, but in case it functions optimal the QE-curve will look like this.
On the ESO, La Silla DFOSC-homepage you can find a Users Manual for DFOSC on the Danish 1.54m. DFOSC is almost identical to ALFOSC. From there you can go on to various Technical Reports.
Count rates have been measured using DFOSC for photometry in broad bands and in spectroscopic mode using both the 'old' Thompson CCD and the new Ford-Loral thinned CCD.
Here you can see the sensitivity curves of grism3, grism4, grism5, grism6, grism7, grism8, grism9, grism10, grism11, grism12, and grism13
This page was last updated Nov. 12, 1996 by Per Kjærgaard Rasmussen