Hello Magnus

I've made myself a little smart.
www.gphoto.org/doc/remote/

"gphoto2 --get-config shutterspeed" gives me a list of numbers that correspond to the exposure time.
"0" would be for me = "bulb"

"gphoto2 --set-config shutterspeed = 0"
Puts the camera in "bulb mode"

The following command shows that the camera does not recognize the "bulb" command.

"gphoto2 --set-config shutterspeed = bulb"
"gphoto2 --set-config bulb = 1 --wait-event = 30s --set-config bulb = 0 --wait-event-and-download = 2s"

The camera does not recognize "eosremoterelease = Immediate".

thomas @ work computer: ~ $ gphoto2 --list-config
Detected a "Canon: EOS 350D (normal mode)".
/ main / settings / ownername
/ main / settings / capturesizeclass
/ main / settings / iso
/ main / settings / shootingmode
/ main / settings / shutterspeed
/ main / settings / aperture
/ main / settings / exposurecompensation
/ main / settings / imageformat
/ main / settings / focusmode
/ main / settings / flashmode
/ main / settings / beep
/ main / actions / syncdatetime
/ main / status / model
/ main / status / datetime
/ main / status / firmware version
/ main / status / driver
/ main / driver / list_all_files
thomas @ work computer: ~ $

As you say, the problem is with the camera

A question for Jasem.
Is there a way in Ekos to control an Arduino so that it triggers the camera via optocoupler / relay?
That would also solve the problem with mirror lock-up.
I think some older cameras have the problem, not just the Canon EOS350 (rebel xt)
The Arduino could handle the mirror lock-up and exposure time.
When the recording time is up, the Arduino sends a "done" and Ekos reads the image.
It's just an idea.

greeting
Thomas

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