Ya big silly! Next time a little advance notice would be good. I'm a bulb-flash guy. Got cases and cases of 'em and dozens of flash units of all kinds.
The guideline for exposure is 'Guide Number' and it is printed on the box. Test first. A good flash meter will read bulb flash correctly, even in strong ambient light.
One of my manual, spelunking flashes.
Attachment 93484
I don't know if your LF shutter has more than one flash synch delay (some have 3 or 4), so shoot at 1/50th or slower and be happy.
To fire them you need a unit that matches the base of the flash. Some are Mazda/Edison screw base - same size as household sockets. There are adapters for #25 bulbs to screw base. (#25 gets their name from their 25mm diameter).
All it takes to set off any flashbulb is 1.5V, but I use 4.5. What the heck.
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