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Please recommend settings for ZWO EAF in Sharpcap

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#1 acrh2

acrh2

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Posted 11 June 2021 - 12:35 AM

I have a refractor (Apertura 72 EDR) -  72mm F/4.8. ASI533MC Pro - FOV of 1.88 degrees.

I just received the EAF and need some good settings for it.
I measured the backlash roughly @ 25+-5steps by monitoring the movement of the fine focus knob, so I set it in ASCOM properties panel.

I set the gain to 550 and exposure to 3sec. Average 2 samples (/2 seconds, whatever that means.)
The problem is that 100 steps away from perfect focus in either direction, Sharpcap focus assistant can no longer detect any stars. So I have about 200 steps of total range where the graph makes sense.
1) Does this result make sense?
2) Are there any settings that I can use to increase the range where stars are detected?
3) Should I use goto best position or go to best score?
4) Overall, what's your best fast procedure to refocus a slightly out of focus EAF due to temperature change?
5) Please give any other useful settings in Sharpcap.

Thanks.




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