Bob Freeze wrote:
>
> I've done some playing around with the histogram in 6.4. I don't know
> if anyone else has tried this, but...
>
> After opening an image and subtracting the dark, before making any
> other adjustments, I manually set the background to zero and the range
> to 65535. This lets you work in from both ends with a complete view
> of the histogram instead of just seeing the central portion. I don't
> know why I've never done this before. I've always just accepted the
> default histogram.
>
> Overall I'm finding images scaled this way have less overall
> brighness, but have a softer, less grainy appearance more like the
> scaling that 2000IP does. I certainly like the results better for
> some kinds of images.
>
> Anyway, the images don't look as "noisy".
>

Yes, that's the procedure I use, particularly on the focus window just
prior to using the selection box - the focus window then 'remembers' the
settings while you are focussing.

However, if you take a normal image, adjust the display as described
above until it's acceptable, then take another image - you have to
repeat the process each time. I often take 5 (or more) images of the
same object and select the best one to save, or the acceptable ones for
stacking, and would like the same parameters be applied to each by
default - until I change something.

Chris

--
*Model Engineer Support Page*
Engineering: http://easyweb.easynet.co.uk/~chrish/homepage.htm
Astro Stuff: http://easyweb.easynet.co.uk/~chrish/lx200.htm

View index by [date] [author] [subject]
Previous message: Re: [M]: Lumicon GEG w/ccd?, Ed Stewart-AstroDesigns
Next message: RE: [M]: RE: Optec Reducer, Michael Hart
Next message in thread: Re: [M]: Re: RE: Re: PictorView 6.4 noise, Ralph P. Pass III
Previous message in thread: Re: [M]: Re: RE: Re: PictorView 6.4 noise, james goss