SharpCap Forums

I started a new topic for the smart histogram question.

viewtopic.php?f=19&t=1117

Hi, I raised this question in another topic I started in Deep Sky Imaging, but felt it needed a seperate topic for clarification. In the updated manual, in the Smart Histogram tab, under Measuring Sky Brightness, it states "you should point the telescope at an area of sky without nebulosity or ...

In Photometry there is a quantity called Airmass which is a function of zenith distance. Airmass affects the calculation of photometric magnitude by noting that the atmosphere reddens the color of a star. We can extend this to AP by frequently rerunning The Brain on the same rectangle of dark sky a...

I feel that you are over-complicating things here - the Brain measurement needs to be run on something at least as dark as the darkest area in the field of view you are imaging - that will ensure that you get a gain/exposure combination that is not being affected by camera read noise. H Hi Robin, t...

Thanks Brian, I might just go for unity then! I'm trying to consider what's best based on the fact that I won't be settling for a single 60 minite live stack, but will rather be doublestacking them plenty later. Question; After I've obtained my sky brightness value by pointing at a dark patch of the...

Thanks Brian, Dialing in offset is indeed important, I ran into the same issue once where I didn't have any offset and my calibration frames did not work properly either. I noticed on my last run of the smart brain analysis that it automatically pushed my offset value to max, perhaps to avoid this s...

Hi Dave, Thank you for the taking the time to explain your workflow, which sounds like textbook procedure and surely leads to great results, as you've demonstrated :) I can only add comments from my experience and hopefully I can be of help. I've followed a similar workflow as yours as well when tra...

oopfan wrote: ↑Thu Sep 13, 2018 1:17 am
I've decided that my next challenge will be SHO of a part of the Soul Nebula, specifically here.

My sensor's FOV closely approximates hers. It's nearly exact in the vertical dimension but my width is wider.

Brian

That sounds awesome! Go for it

Brian thanks. It's my understanding that if I were to use the smart brain (whose exposure setting analysis is based by default for a 1 hour stack) to figure out the best exposure & gain for each channel, say to achieve max. dr, then with that 'equilibrium between channels' in place, one could si...

Or perhaps simply just use the smart brain on each channel for finding the max DR sky limited exposures, acquire calibration files and simply stop looking for unified settings, base it all on total integration time.