Hello Robin,
Thank you for your time in replying.
I will say it again, "Dr. Glover's commitment in personally responding is unheard of in today's customer support."
Your impression that I am a Bortle 3.5 to 4 zone is likely spot on.
Because, although I am in urban environment with many sources of light pollution that I characterized as a Bortle 5 Zone is based on
https://www.lightpollutionmap.info/#zoo ... FFFFFFFFFF
- BortleZones.PNG (173.5 KiB) Viewed 1411 times
I do have an advantage that likely contributes to this level of your dark skies estimate.
At this location much of the urban light pollution is directly North of me and since I am imagining directly South. Much of the sources of light pollution are vastly limited by the observation that when I am imagining due South. It is over open Ocean, and the nearest downstream sources of light pollution are in South America in relation to observing due South from this location.
On the night in question, I had above average seeing conditions for my Southwest Florida location.
Atmospherically, the air was thermally still and dry. There was no Moon and I had very good seeing conditions in terms of any thin cloud cover that would naturally reflect the urban glow behind me was very restrictived.
Not sure, "What to make this statement in your reply."
"Even picking the minimum read noise values of about 1 in your measurements would mean a 1000s exposure with the 7nm narrowband filter, so it looks like there really is no option in the <600s range with this setup."
I am taking the position that what you are saying is the smart histogram analysis is being built on a software simulation profile characteristic routines based on the sensor analysis that are software coded as assumptions for the smart histogram analysis. That falls outside of being able to provide a solution due to the degree of light bucket limiting gathering factors for this particular narrow band filter.
Since the smart histogram analysis is able to provide a solution for when I use a different filter. (In that case when I use the Optolong L-Pro luminesce pass band filter.)
All I can conclude are physical limiting factors on the rate photons that do pass through this narrow band filter (an Optolong H-alpha with a 7nm pass band.)
That don't allow for a smart histogram solution based on the data of the sensor analysis in terms of the next higher ADU's towards the full-well sensitives of sensor analysis data aquired.
Am I now understanding the problem more discreetly within your reply?
Additionally, with what you are saying about, "Suspect data stats within my reported sensor analysis data."
That is concerning to me since I am trying to base gain, offset and exposure times such that suspect data measurements points as you sighted in your reply of the sensor analysis that are ultimately used in the smart histogram simulation analysis."
If you are having observational exceptions to the reliability of the underlying sensor analysis data.
Then how, "Can any reliable smart histogram analysis be achieved."
Could that be the main contributing factor, "As to why the smart histogram was unable to provide an optimal solution for this H-alpha filter?"
As any flat panel LED light source readily displays, "The light source is not broad band uniform towards the spectrum of EMF readings of natural light."
Meaning it, "Is NOT natural light and is in fact built on very discreet wavelengths that emanate from the solid-state LED source.
It is all electronically generated light and very specific to the solid-state light source of LED emissions as the source of the light being measured in the sensor analysis.
My observation is, "Could these LED wavelengths provide a false measurement of the sensitively readings being measured by the sensor analysis algorithm that contribute my 'No Solution' benchmarks in the smart histogram measurements.
That is to say on the CMOS sensor, "The analysis is being built on solid-state LED generated sources of light of very specific LED sourced wavelengths."
These points of LED wavelengths on the sensor analysis data may very well fall within the spectrum being eliminated(clipped) by this narrow band H-Alpha filter.
Thus, hugely contributing to the non-solution in the smart histogram analysis. QED
As for the attached text file that you cite as having suspect data point stats with an UNDERSTANDING that you suspect that there was a variation in illumination brightness.
All I can say is that once I adjusted brightness of my LED source to achieve a 65% threshold.
That is, "Reasonably there should NOT have been any variations in the source intensities that contributed as a variable of uncertainty."
The intensity of the light LED source was and would have been very consistent as dialed into the 65% threshold once established."
Leading me to conclude this Sensor Analysis is built on a faultily assumption that sensor analysis derived from an LED light source panel does NOT in fact match the natural characteristics of the broad band light spectrum to which the sensor analysis of SharpCap is based.
I am going to think about this possible contributing factor just a bit.
And see if using a light source of a natural diffused sky light gains me a better sensor analysis.
I will post further results.
As for the binning issue you cited.
When I enter into the sensor analysis algorithm tool, "It clearly states with a check box (I paraphrase), "Do you want to measure binning measures in the sensor analysis."
So, I am uncertain as to the confusion when you state, "I'm not sure what 'binning enabled' vs 'disabled' can be here..."
Maybe the best possible way forward at this point is to have you clarify an expectation of sensor analysis experiment data collection that matches a baseline for your expectations versus my understanding and implementation.
Clearly, I have displayed an above average understanding worthily of the effort to provide feedback to SharpCap's continued software development.
That is, "I readily want to provide real world feedback data of the analogue sensor read outs on Noise to Signal outcomes for Sharpcap's CMOS sensor analysis paradigms."
Such that this would be an experiment of your design. "Just tell me what your controlled, definitive experiment of data acquisition would be."
I am saying that I am, "All game to what that would entail provided your control input."
Sincerely,
Mark