SharpCap Forums

The data in version 3.2 for the ZWO ASI294MC-Raw16.json in Sensor Library appears to have a problem.

First off when using the brain it reports back for a unity gain setting of 220. Unity gain for this camera is 120. Also the file indicates that the BitDepth is 12 when it is 14.

Looking at the files in the last 3.1 version the BitDepth is 14 and using the brain when it takes a measurement reports back 115 for a unity gain setting.

I don't know if either file is correct. The data in the two SC versions in the 294 sensor library files don't agree.

Don

Hi Don,

Z w o added a a feature to let sharpcap ask the bit depth of the sensor which I started to use at one point. The trouble was that it gave the wrong result for some sensors, including giving a bit depth of 12 for sensors that were really 14 bit. Once I spotted this I stopped using that SDK call but it looks like some of the data has made its way into the centre library. That means that the values for 3.1 and probably correct and the ones for 3.2 are probably wrong. I will have to correct when I get a chance.

Cheers, Robin

Would you please let me know if at some time you find that even the 3.1 data is possibly not correct. ZWO did change the SDK in August and they changed the dark noise data for the 294.

Thanks,

Don

I'm not sure if this is relevant, but I completed a sensor analysis on my ASI294MC-Pro that I purchased in October.
There was a default sensor analysis that SharpCap loaded before I ran my own sensor analysis that had the unusual unity gain level.
After running the sensor analysis, the brain came up with unity gain at 121 and the same for the max dynamic range, which seems right on target.
Bill

admin wrote: Mon Nov 12, 2018 8:03 pm Hi Don,

Z w o added a a feature to let sharpcap ask the bit depth of the sensor which I started to use at one point. The trouble was that it gave the wrong result for some sensors, including giving a bit depth of 12 for sensors that were really 14 bit. Once I spotted this I stopped using that SDK call but it looks like some of the data has made its way into the centre library. That means that the values for 3.1 and probably correct and the ones for 3.2 are probably wrong. I will have to correct when I get a chance.

Cheers, Robin

When you get time would you correct these two ASI294 files. They are requiring that they be manually over written with every update.