Re: Question about default filter


Jun 28, 2012

 


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#49876 Jun 28, 2012

I have the latest version of Maxim. And I'm using an SBIG CFW8 with RGBL filters inserted into the wheel in that order, Red in slot one, L in slot 4.



When I go to the exposure tab I always see the red filter selected as the default. I'm concerned that when I use Focusmax or any other program that might need the camera (Pempro or CCD Inspector for instance) it will use the red filter instead of luminance.



Should I swap the filters around or is there a way to select and save the luminance filter as the default?



Thanks.



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#49878 Jun 28, 2012

--- In MaxImDL@yahoogroups.com, "tpiccian" tpicciani@...> wrote: > When I go to the exposure tab I always see the red filter selected as > the default. I'm concerned that when I use Focusmax [etc.]

> it will use the red filter instead of luminance.



The red filter should not _always_ be selected when you switch to the Expose tab. If you simply change the filter to something else, switch to the Guide or Setup tab, then switch back, it should be where you left it.



But if you change to a different exposure preset and then back again, the filter dropdown _does_ return to its original value. This is because selected filter is saved independently in each preset. If you don't like the one associated with the current preset, select the one you do want. At this point the preset name will be prefixed with an asterisk (e.g., "*Find Star"), indicating you've changed something in the current preset from its saved values. Now select "Update Current Preset" from the flyout button [>] menu next to the preset dropdown. The asterisk goes away, and now every time you come back to this preset, this filter will be indicated in the droplist.



When you switch to a preset that specifies a different filter, only the dropdown changes. The filter wheel itself isn't commanded to move until an image is taken or you select a different filter from the dropdown yourself.

> Should I swap the filters around or is there a way to select and save

> the luminance filter as the default?



With that background out of the way, I can now answer your question. In general, programs that use MaxIm DL should specify all exposure parameters (exposure time, binning, subframe, filter...) when they request an image be taken. Only if a client program does not provide a filter selection control do you need to worry about whether the proper filter is in place. Since FocusMax does NOT have its own filter specifier, you probably should change the default filter in the preset(s) you most commonly use, as described above.



Hilderic Browne

Diffraction Limited



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#49883 Jun 29, 2012

Thanks. That answers my questions.





--- In MaxImDL@yahoogroups.com, "Hilderic Browne" hbrowne@...> wrote:

>

> --- In MaxImDL@yahoogroups.com, "tpiccian" tpicciani@> wrote:

> > When I go to the exposure tab I always see the red filter selected as > the default. I'm concerned that when I use Focusmax [etc.]

> > it will use the red filter instead of luminance.

>

> The red filter should not _always_ be selected when you switch to the Expose tab. If you simply change the filter to something else, switch to the Guide or Setup tab, then switch back, it should be where you left it.

>

> But if you change to a different exposure preset and then back again, the filter dropdown _does_ return to its original value. This is because selected filter is saved independently in each preset. If you don't like the one associated with the current preset, select the one you do want. At this point the preset name will be prefixed with an asterisk (e.g., "*Find Star"), indicating you've changed something in the current preset from its saved values. Now select "Update Current Preset" from the flyout button [>] menu next to the preset dropdown. The asterisk goes away, and now every time you come back to this preset, this filter will be indicated in the droplist.

>

> When you switch to a preset that specifies a different filter, only the dropdown changes. The filter wheel itself isn't commanded to move until an image is taken or you select a different filter from the dropdown yourself.

>

> > Should I swap the filters around or is there a way to select and save

> > the luminance filter as the default?

>

> With that background out of the way, I can now answer your question. In general, programs that use MaxIm DL should specify all exposure parameters (exposure time, binning, subframe, filter...) when they request an image be taken. Only if a client program does not provide a filter selection control do you need to worry about whether the proper filter is in place. Since FocusMax does NOT have its own filter specifier, you probably should change the default filter in the preset(s) you most commonly use, as described above.

>

> Hilderic Browne

> Diffraction Limited

>



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