2022-12-31, 09:36 AM

Hello,

I'm testing the Exposure Calculator Tool, and I'm not sure if it is working correctly. I'm comparing my real results with the calculated results. So far they are not even close to each other, despite being sure that all the settings are correct.

In addition, my understanding is that if I increase the gain of my camera, then the required time to reach a certain SNR value will be shorter, but using the tool, the total exposure time does NOT change for ALL the gain values that I have! Is this reasonable? Attached is a sample for a target where the required time is 28 minutes to reach SNR value of 50 for ALL the gain values!

Also, I have a question regarding the "Read Noise" value that I should enter for my camera, is it the minimum or the maximum or the value which corresponds to my gain value? The same question applies if I'm doing BIN2, then should I keep the value for BIN1 and the tool will convert it? Or should I enter the value of BIN2?

Thank you.

I'm testing the Exposure Calculator Tool, and I'm not sure if it is working correctly. I'm comparing my real results with the calculated results. So far they are not even close to each other, despite being sure that all the settings are correct.

In addition, my understanding is that if I increase the gain of my camera, then the required time to reach a certain SNR value will be shorter, but using the tool, the total exposure time does NOT change for ALL the gain values that I have! Is this reasonable? Attached is a sample for a target where the required time is 28 minutes to reach SNR value of 50 for ALL the gain values!

Also, I have a question regarding the "Read Noise" value that I should enter for my camera, is it the minimum or the maximum or the value which corresponds to my gain value? The same question applies if I'm doing BIN2, then should I keep the value for BIN1 and the tool will convert it? Or should I enter the value of BIN2?

Thank you.