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INDI Library v1.8.4 Released

Minor bugfix release with some highlights:

Nikon D5100 short exposure issue

3 weeks 3 days ago
khobar
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Nikon D5100 short exposure issue #50461
My Nikon D5100 works fine using the relay shutter release for long exposures, but now I want to do some flats and it just doesn't. Basically, I try to do 1/500, 1/1000, 1/2000, etc. and it always takes about 1 second. This is true whether I disable Force Bulb Mode or not.

I disconnected the relay, both ends, and now it won't take pictures at all, looking for /dev/ttyUSB0.

I have tried both the Nikon and gphoto drivers to no avail.

Thoughts?

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1 week 3 days ago
jabian
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Nikon D5100 short exposure issue #50917
I am having exactly the same problem with a D90 and a KMtronics relay. The shutter is always controlled by the relay. It doesnt matter if you set multi or sub-second exposures or 'Force Bulb' is on or off.
The only workaround I found is:
In INDI, delete the relay port (set the text entry empty).
Save the configuration (same page were the 'force bulb' is). Then, in EKOS, disconnect and stop, then start again (I do this to be sure the port settings are saved. I am not sure how it works but it seems to work)
After this, you gain shutter control from your camera. The problem is that you can not make exposures longer than 30 s. For this you have to set again the port, etc etc

Let me know if this helps.
The following user(s) said Thank You knro

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1 week 3 days ago
knro
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Nikon D5100 short exposure issue #50941
So the camera is connected directly via USB as well?

Jasem Mutlaq
Support INDI & Ekos; Get StellarMate Astrophotography Gadget.
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1 week 2 days ago
jabian
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Nikon D5100 short exposure issue #50945
Hi Jasem,
I already answered you on stellarmate support.
Yes, both connectors/cables are needed for full range of exposition speeds.

A) The USB-USB connector is in charge of transferring data between camera and the software.
Through this cable there is capability to trigger the camera shutter at speeds up to 30 s.

B ) For longer expositions it needs another additional cable to trigger the shutter in Bulb mode.
If I’m not wrong, this cable is a dead (no data transfer cable) It is just an open/close contact that triggers the shutter and let it open (acquiring image) until the contact is opened again.
This open/close contact is done by the relay in the KMtronics device which is itself controlled by RS232 commands send by the software (INDI/EKOS) through a USB port.

Thanks !

Joaquin

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