2018-12-24, 04:39 PM

Hi Greg,

I'm still interested in understanding why some observations are contributing between 0 and 1 to SNR. I trust your calculations - I'm sure I have a configuration issue, but so far I haven't been able to find it. E.g., I now have between 1 and 3 hours of data per filter for NGC 2903 and the SNR per filter is showing as 1 or less. That means to get to my goal of SNR=60 I'd need over 300 hours of data (five filters), which doesn't quite feel right.

I'll attach two screen shots, Exposure Goals and Filters, and Observations. I'm not seeing these very low SNR results for all my projects, just some of them.

Thanks for any help.

Hope you're enjoying your holidays!

Rowland

I'm still interested in understanding why some observations are contributing between 0 and 1 to SNR. I trust your calculations - I'm sure I have a configuration issue, but so far I haven't been able to find it. E.g., I now have between 1 and 3 hours of data per filter for NGC 2903 and the SNR per filter is showing as 1 or less. That means to get to my goal of SNR=60 I'd need over 300 hours of data (five filters), which doesn't quite feel right.

I'll attach two screen shots, Exposure Goals and Filters, and Observations. I'm not seeing these very low SNR results for all my projects, just some of them.

Thanks for any help.

Hope you're enjoying your holidays!

Rowland