Dslr bias shutter speed in Asiair Pro

[AstroNebulee]

Hi

When taking my bias frames with my Asiair pro and Canon 600D what is the fastest shutter speed I can input to the bias plan. I used to use 1/4000 when using my dslr before the AAP but would like to know the fastest speed for optimum bias frames with my dslr 

Thank you 

[Richard_]

Well, 1/4000 is 0.00025 so I'd start by entering that into the exposure time. If I recall, you can enter an even smaller number but the ASIair or camera will automatically default to the fastest exposure time of 1/4000 (ie you can't cheat it and go faster!). 

[AstroNebulee]

5 hours ago, Richard_ said:

Well, 1/4000 is 0.00025 so I'd start by entering that into the exposure time. If I recall, you can enter an even smaller number but the ASIair or camera will automatically default to the fastest exposure time of 1/4000 (ie you can't cheat it and go faster!). 

Thank you Richard I shall give this a go, I just couldn't work that out, hopefully it'll work 👍