Hello,
simply try ghostscript!
gs invoked with -help produces a lot of information. On Linux
with standard precompiled ghostscript there are the following
devices included:
x11 linux bj10e bj200 cdeskjet cdjcolor cdjmono cdj500
cdj550 declj250 deskjet dfaxhigh dfaxlow djet500 djet500c epson
eps9high epsonc escp2 ibmpro jetp3852 laserjet la50 la75
lbp8 ln03 lj250 ljet2p ljet3 ljet4 ljetplus m8510
necp6 paintjet pj pjxl pjxl300 t4693d2 t4693d4 t4693d8
tek4696 bit bmpmono bmp16 bmp256 bmp16m gifmono gif8
pcxmono pcxgray pcx16 pcx256 pbm pbmraw pgm pgmraw
ppm ppmraw tiffg3 pbm pbmraw pgm pgmraw ppm
ppmraw bit
As You see, there are entries like bmp*, gif*, pcx*, pbm*
and tiffg3.
Try to convert to ppm or pbm and use xv to convert to tiff or
convert to tiffg3 directly.
Or take a look at the pbm tools, maybe there is a direct way
to convert ps to tiff (I have it not online).
best regards
Andreas Holz