Examples

> tx slit
done slit slit=closed dropleaf=closed cantopen=sun,windy

or

> tx slit
done slit slit=open dropleaf=closed

To open the slit enter in

> tx slit open
> tx slit slit=open            #alternate form
> tx slit dropleaf=open        #slit must already be open

The cantopen keyword is only present when the slit cannot open due to bad weather or sunlight. Possible reasons that it cannot open are:

sun

- when the sun is too high

rain

- when it is currently raining

drip

- when it was raining a short while ago (time in seconds)

humid

- R.H. too high

windy

- when peak windspeed is too high

Use the limits option to determine the current weather limits. It reports a string similar to:

> tx slit limits
done slit sunalt=10.0 humidity=90 windspeed=14 rain=1 drip=3600

ERROR messages will be issued if the dome open request is made and the weather is bad, or the dome remains stowed when an open request has been made.

> tx slit
done slit slit=closed dropleaf=close

The dome slit will stay open for about 5 minutes after each slit open command.

Use the keepopen option to keep the slit open. The keepopen will not open the dome if it is closed. NOTE: If the slit (and dropleaf) are open and the weather is no longer suitable, the keepopen command will cause the slit to close (strange but true) and an error message will be issued.