2018-09-27, 09:05 PM
[quote pid='1084' dateline='1538071347']
[quote pid='1082' dateline='1538067577']
As far as what an SNR of 4 means to you, SkyTools is not meant to replace you or your experience. You will need to develop a feel for what an SNR of 4 means.
[/quote]
[/quote]
Yep, and that's what makes ST4 such an intriguing tool to work with ... now that I have a reproducible way to generate the quantifiable "SNR 4" light I can get a feel for just what that means for galaxies, planetary nebulae, diffuse nebulae, all of the interesting stuff out there for a given SQM and seeing. It might turn out that "SNR 8" at SQM 21.0 seeing 1.0" or "SNR 16" at SQM 18.2 seeing 1.5" is the minimum "SNR" for a galaxy to get the arms under various SQM's and seeing, maybe an "SNR 8" at SQM 20.5 seeing 1.0" or "SNR 20" at SQM 19.0 seeing 2.0" for a planetary, maybe "SNR 12" at SQM 20.1 seeing 1.2" or "SNR 25" at SQM 18.6 seeing 2.1" for an extended nebula works best for me ...
And with ST4's scheduling, once I've gotten that "minimum SNR for SQM and seeing" I can now go back and based on what my night should be schedule up just the right objects to get my lights for them ...
[quote pid='1082' dateline='1538067577']
As far as what an SNR of 4 means to you, SkyTools is not meant to replace you or your experience. You will need to develop a feel for what an SNR of 4 means.
[/quote]
[/quote]
Yep, and that's what makes ST4 such an intriguing tool to work with ... now that I have a reproducible way to generate the quantifiable "SNR 4" light I can get a feel for just what that means for galaxies, planetary nebulae, diffuse nebulae, all of the interesting stuff out there for a given SQM and seeing. It might turn out that "SNR 8" at SQM 21.0 seeing 1.0" or "SNR 16" at SQM 18.2 seeing 1.5" is the minimum "SNR" for a galaxy to get the arms under various SQM's and seeing, maybe an "SNR 8" at SQM 20.5 seeing 1.0" or "SNR 20" at SQM 19.0 seeing 2.0" for a planetary, maybe "SNR 12" at SQM 20.1 seeing 1.2" or "SNR 25" at SQM 18.6 seeing 2.1" for an extended nebula works best for me ...
And with ST4's scheduling, once I've gotten that "minimum SNR for SQM and seeing" I can now go back and based on what my night should be schedule up just the right objects to get my lights for them ...