A question for Touptek 462m guide camera owners: I'm interested in the camera settings in PHD2. I don't understand how to select the correct gain. The default value is 0, but at this value, stars are often lost. And at values above 2-3, the stars start to become oversaturated. Should I use the low conversion gain mode, or is this a driver issue? I used the Touptek native driver, and PHD2 doesn't allow me to select HCG or LCG modes. But I think this is possible with the ASCOM driver. Can you share your experience?
Touptek GPM462M and PHD2
I do not own this camera, but have used two (Player One Uranus C and SVBony SV905C) for guiding.
Followed the guide for PHD2 set up from this page. Using the corresponding native drivers, 50 to 60% gain in PHD2 works well for me.
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I would be willing to bet you’re in 8 bit mode, instead of 16 bit.
Prior to connecting the camera in PHD2, there will be a gear icon next to the connect button. Click that, enable 16 bit. This is with the native driver btw.
in 8 bit, you have 255 ADU before a star becomes saturated. In 16 bit, it goes up to 65k. You’ll also need to tweak the ADU threshold for saturated stars in PHD to something like 45-50k. It’s a big difference. Beyond that, you might need to tweak your star detection thresholds.
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Brian Puhl:
I would be willing to bet you’re in 8 bit mode, instead of 16 bit.
Yes, you're absolutely right, I used 8-bit mode.
Brian Puhl:
You’ll also need to tweak the ADU threshold for saturated stars in PHD to something like 45-50k
Do you mean this parameter?
Brian Puhl:
tweak your star detection thresholds
These settings?
Thanks for the answer!
Before you connect the camera in phd2 you can set it to 16 bit
My snr2 went from 25 to 150 on a zwo 120mm mini
My snr2 went from 25 to 150 on a zwo 120mm mini
TiffsAndAstro:
Before you connect the camera in phd2 you can set it to 16 bit
Yes, I'll try next time.