[Aavso-photometry] CCD 'fainter-than' question

[Michael Newberry]

[...]

> I think that its generally accepted that a 3 sigma detection above the
> noise is sufficient certain to report such a measurment with its high
> error.

    yes.

>
> If its a less than a 3 sigma detection, it should be probably reported
> as a 'fainter than' with the value of the background + 3 sigma as mag
> But this mag value is unfortunatly nothing that is available with usual
> photometry software. So maybe someone of the experts can recom-
> mend how it can be fast and easily determined.
>

    I am not sure what you mean. Can;t you get that number out of _any_ 
software that does photometry?

Michael

[...]