Hi,

The liveview mode or the bulb mode in two shutter releases I suppose could be managed by the indi driver. This could be done in the stop_bulb fonction (github.com/indilib/indi/blob/741ab34041a...hoto_driver.cpp#L569)
in case we selected the specific bulb mode it send a second shutter release.
I don't know how the driver works, this could be a could reason for me to dive into the code

@KRNO do you know if it would be possible to do the 2 shutter release operation within INDI?

What needs to be done exactly? I have no idea about this. The driver already support remote shutter release by a serial cable. Shouldn't this be added at the libgphoto2 level?

Can you edit the gphoto_driver.cpp to add the required changes and test them out?

Hi Jasem,

I'm starting to lean towards the remote shutter option via serial port. I have had issues with the images downloading to the Pi in the desired resolution. Sometimes it works correctly and sometimes it doesn't.

Does the serial shutter work through Gphoto2, or is it a different interface? Can I make one, or do I need to get the Shoestring Astronomy version? I can't find where you would add the serial interface in Ekos. I have found the plans to make one and it looks pretty easy to make.

Sent from my SM-N960U using Tapatalk

Hi,

I don't know if it's to be done in Indi or libgphoto, maybe a little in both.
The bulb sequence seems to be done in Indi. (gphoto_start_exposure() and stop_bulb() functions)

But for libgphoto2, it seems that the bulb mode is working only for canon cameras. (I might be wrong)
Now for the function we are talking about (LiveTime or Bulb2) we need a function in libgphoto to only trigger the shutter, but the function "trigger-capture" is also not supported yet in libgphoto for pentax or olympus.
If we could add this in libgphoto and then manage a 2 shutter release in Indi that would be great. (First Trigger-capture then wait x sec and finally capture_image with download)

I'm just starting in this so i have a lot to process, I hope i can be of some help.

Berylius

I've analysed the usb trafic for the shutter fonction of the Olympus.

Here are my investigation for the camera in libgphoto2:

The variable for the camera trigger is:
In the function used for the image capture there is indeed

In case of a normal capture the "ptp_olympus_omd_capture " function is correct but for the Bulb mode it's not because value 0x3 is shutter downand value 0x6 is shutter up
so this initiate a short exposure.

We should made 2 differents function, so we could make the Bulb function operationnal.

I will try to make the changes in libgphoto2

Thank you for looking into this, Benjamin!

Hi,

Work in progress! I have made some progress on the subject. For the moment I try to enable the Bulb mode for the Olympus, and it starts to work!
I successfully send shutter down at the beginning and shutter up at the end. I've some problems with downloading the results, the code changes have been made but I have to wait for this evening for the testing. (All modifications are made in libgphoto2 not Indi)
After that i will have a look into the pentax, a friend of mine has also a K70 and his also interested, so if needed i'll check with him.

Berylius

Hi,

It's working so far. The only thing is you have to take the shots in "Native" format, in "Fits" it's not working the driver is crashing during the "subframing" process (I suppose).
I'll make a Pull Request on the libgphoto2.

Berylius

Awesome, thank you so much for working on this! I prefer to use the native format, so the FITS conversion is not a big deal to me.

Is there a way I can try this out? Would I just update libgphoto2? Are there any special items I need to know to test this?

Hi,

You can try to download the source here github.com/berylius/libgphoto2.git
and compile it.

Have a look at the INSTALL file in the repository for instructions.

Regards,

Berylius

Hi,

If you want to try it, it has been merged into the official repository (github.com/gphoto/libgphoto2/pull/394)

Berylius