CCD Temperatur cool down

Hello,
maybe it an Idea to add/Edit the CCd cooling/warmup …stay with old settings add maybe this…
now its -25C in 10 min…maybe its more practical cool /warm up to-25C but then in max 2-3 or what ever degree steps till its hits the target temperature…more save i think rather than to "calculate " the right time factor for not overcool/heat the chip in his manufacturer suggestions…