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INDI Library v1.7.8 Released (11 May 2019)

Mid year release of INDI Library v1.7.8 comes with a few drivers and improvements to to existing drivers.

Short exposures for ZWO cameras

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Short exposures for ZWO cameras was created by Gina

Firstly, thank you for a great collection of software :)

I'm using INDI/KStars/Ekos for my All Sky Camera and the standard ZWO INDI driver is fine for longer exposures with my ASI185MC camera but I would like to use this in daytime as well as at night. Now to the problem - the minimum exposure with the INDI driver is 1ms and with gain set to zero this is still too much. The camera goes down to 32µs and I'm wondering if the INDI driver source code could be edited to allow shorter exposures. Would this be just a matter of increasing the input text box or is it more complicated than this? Any help would be much appreciated. Thank you.
The following user(s) said Thank You: knro
1 year 6 months ago #20719

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Replied by knro on topic Short exposures for ZWO cameras

This can already be done in Ekos. I just took 64us exposure for ZWO 120mm. Just make sure you are using the latest KStars version (current is 2.8.7).
Jasem Mutlaq
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The following user(s) said Thank You: Gina
1 year 6 months ago #20720

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Replied by Gina on topic Short exposures for ZWO cameras

I replied to this using "Quick Reply" but my reply seems to have disappeared. Now trying "Reply".

I installed the latest KStars and upgraded the INDI drivers etc.to be sure everything was up-to-date and tried again but it's still the same. The exposure text box in Ekos won't let me enter any value less than ".001". I'm assuming the exposure is in seconds. Am I missing something?
1 year 6 months ago #20768

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Replied by knro on topic Short exposures for ZWO cameras

Can you double check the KStars version? Any screenshot from the capture module?
Jasem Mutlaq
Support INDI & Ekos; Get StellarMate Astrophotography Gadget.
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1 year 6 months ago #20772

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Replied by Gina on topic Short exposures for ZWO cameras

Thanks for your reply :)

KStars version 2.8.7. Screenshots of About KStars Version and Ekos attached.
Last edit: 1 year 6 months ago by Gina.
1 year 6 months ago #20774
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Replied by knro on topic Short exposures for ZWO cameras

Thanks. From the INDI control panel, go to the camera tab, then try to put the exposure value directly there under Exposure property and then press set. Try to put 0.00001 and see if it produces any error message.
Jasem Mutlaq
Support INDI & Ekos; Get StellarMate Astrophotography Gadget.
How to Submit Logs when you have problems?
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The following user(s) said Thank You: Gina
1 year 6 months ago #20775

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Replied by Gina on topic Short exposures for ZWO cameras

When I try to enter anything less than .001 the light goes red. That includes .00001 as you suggested and .0009
1 year 6 months ago #20776

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Replied by knro on topic Short exposures for ZWO cameras

yes but what does it say below? there should be a message about the limits in the control panel log window
Jasem Mutlaq
Support INDI & Ekos; Get StellarMate Astrophotography Gadget.
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1 year 6 months ago #20777

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Replied by Gina on topic Short exposures for ZWO cameras

The log window is empty - no error messages. But the exposure seems to be taken from the Ekos camera control panel and even with .0001 in the INDI control panel the exposure is the same.
Last edit: 1 year 6 months ago by Gina.
1 year 6 months ago #20778

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Replied by knro on topic Short exposures for ZWO cameras

Ok this is weird because I see message in the INDI Control Panel. I tried to enter 0.000001 directly there and received an error as you can see below.

Jasem Mutlaq
Support INDI & Ekos; Get StellarMate Astrophotography Gadget.
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1 year 6 months ago #20780
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Replied by Gina on topic Short exposures for ZWO cameras

I'm not getting any messages in the log window of any sort. And that's strange. Also not getting any messages in the Astroberry Board control that I'm using to control a dew heater and camera cooler (separate Peltier TEC module cooling the camera casing). I feel sure I used to get messages with the older version of KStars etc. but I could be mistaken as I use other software with similar log windows.

I notice the Set button in your screenshot is blue whereas mine stays white (it goes grey when I click and hold). The general colour scheme is different too but that's probably to do with the OS in use. I'm using Linux Mint
1 year 6 months ago #20781

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Replied by Gina on topic Short exposures for ZWO cameras

Thought I would try "sudo apt-get update && sudo apt-get upgrade && sudo reboot" on my Linux Mint client machine in case something there wasn't up-to-date but it's made no difference - still nothing in the log windows and minimum exposure is still .001s in Ekos. I would have thought this was set up in the INDI camera driver but that doesn't explain the absence of log messages. Also, if you're using the same INDI driver as it would seem (the driver is the same for the ASI178 as for the ASI185 - I have used both cameras in my ASC at different times).
Last edit: 1 year 6 months ago by Gina.
1 year 6 months ago #20797

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