Exposure time less than 1 second

Hello,

I try to use SGP with a Mono 1600 ZWO ASI. In the Frame and Focus Box are the available times 0 s, 1 s, 2 s ...: can I set up in SGP an exposure time is less than 1 second (as 0.45 s).
Can I use SGP to make recordings of the Sun with exposures times smaller than 1 s?

François Janssen