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INDI Library v1.8.0 is Released (27 Jul 2019)

INDI Library v1.8.0 is mostly a maintenance release to fix a few bugs in several drivers.

DMK41 AU02.AS : How to configure it with INDI ?

Replied by knro on topic DMK41 AU02.AS : How to configure it with INDI ?

Do these camera support long exposures? I don't see how this could be done using the V4L2 interface.
Jasem Mutlaq
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5 years 7 months ago #406

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Replied by bilbo-le-hobbit on topic DMK41 AU02.AS : How to configure it with INDI ?

DMK should be able to make images of long exposure (up to 60 minutes with IC Capture software), but for now it does not work. I get a black image
Last edit: 5 years 7 months ago by bilbo-le-hobbit.
5 years 7 months ago #408

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Replied by bilbo-le-hobbit on topic DMK41 AU02.AS : How to configure it with INDI ?

Here is the tab setting for long exposure. I tried various settings with no results yet

File Attachment:
5 years 7 months ago #409

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Replied by knro on topic DMK41 AU02.AS : How to configure it with INDI ?

That tab is meant for modded cams I think, I will have to verify with the author. I'm still researching whether there is a way in V4L to set manual exposure if possible.
Jasem Mutlaq
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5 years 7 months ago #410

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Replied by bilbo-le-hobbit on topic DMK41 AU02.AS : How to configure it with INDI ?

Tab long exposure is rather complex to deal with, apart from the enable / disable button, I have no idea of ​​the proper configuration for the other settings. Indeed it seems reserved for advanced users and modded cameras.
Now it would be nice if we could just manage native long exposure cameras like mine ... Thank you for your help!
5 years 7 months ago #411

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Replied by knro on topic DMK41 AU02.AS : How to configure it with INDI ?

This has been addressed now by Jean-Luc. There is an option now for exposure in V4L2 Control called "Exposure (Absolute)". You also need to set exposure to Manual. But whether this particular V4L2 control is implemented for the DMK UVC driver I don't know, you'd have to try and find out if it works.
Jasem Mutlaq
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5 years 7 months ago #418

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Replied by bilbo-le-hobbit on topic DMK41 AU02.AS : How to configure it with INDI ?

Not having found the V4L2 Control setting Called "Exposure (Absolute)" in INDI, I tested in guvcviewer that offers manual or auto exposure options and the famous exposure setting (absolute value)
And it works! It took me time to understand what scale was used for the absolute exposure, I remembered that the shortest exposure time of the camera is 1/10000 second, which corresponds here to the number 1. 1 seconds exposure equals 10000, 10 seconds, 100,000, etc.. And the maximum exposure of 60 minutes for the DMK camera is equivalent to 36 million.
The other options in guvcviewer correspond to what is possible for me to set on Windows: brightness (0 to 63), the gain (260-1023), gamma (1 to 500)
File Attachment:
5 years 7 months ago #420

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Replied by knro on topic DMK41 AU02.AS : How to configure it with INDI ?

Are you sure you are using the latest libindi (from SVN, not PPA)? Can you post a screenshot of the V4L control tab?
Jasem Mutlaq
Support INDI & Ekos; Get StellarMate Astrophotography Gadget.
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Last edit: 5 years 7 months ago by knro.
5 years 7 months ago #421

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Replied by bilbo-le-hobbit on topic DMK41 AU02.AS : How to configure it with INDI ?

Here is how the V4L2 tab looks:

File Attachment:


No manual exposure control, or the setting of exposure in absolute value
5 years 7 months ago #422

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Replied by bilbo-le-hobbit on topic DMK41 AU02.AS : How to configure it with INDI ?

Oh wait, the ppa offered me an update today... I reinstall via svn ;)
5 years 7 months ago #423

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Replied by bilbo-le-hobbit on topic DMK41 AU02.AS : How to configure it with INDI ?

Ok it works! The V4L2 tab contains exposure in absolute value and tab options V4L2 offers manual or auto mode. By cons, under Ekos in the CCD tab, the exposure setting is ineffective. Setting panel INDI prevails over Ekos. This is not really a problem, adjusting the exposure time is more accurate with INDI
5 years 7 months ago #424

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Replied by knro on topic DMK41 AU02.AS : How to configure it with INDI ?

Ok, I wanted a confirmation before updating the V4L2 driver. The driver will update "absolute exposure" value if it exists whenever a new exposure is requested, so the Ekos "expsoure" setting will be sufficient by itself.
Jasem Mutlaq
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5 years 7 months ago #425

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