Gordon, go to CCDware's Resources page for their Exposure Calculator, and other tools, http://www.ccdware.com/resources/subexposure.cfm You'll probably find...
My only question would be is this supposed to be a pre-calibration or post-calibration background statistic? ... www.flemingastrophotography.com Direct from...
Ooops! Chuck's URL didn't make it. If you are interested in some very fine 20Da DSLR images check out his site...joe :) http://astrophotography.aa6g.org/ ...
Hello Matt, sorry I'm late, have been abroad. Thank you for pointing me to this shadow/highlight tool (in German "Tiefen/Lichter"). In fact I never noriced it...
Is there some reason, why the calculator does not show the standard ST-8 or ST-8E ? Rolf Subject : RE: [ccd-newastro] Exposure Duration Gordon, go to CCDware's...
... heart's content. <G> ... <http://astroshed.com/software.html> ... don't like it because I think most of what it does is done better using Photoshop's...
Hello all. When using a color filter wheel (e.g. STL-11000 with Astrodon filters) is anyone also using some kind of light pollution filter at the same time...
Hi Ron, Rolf, all It's not the plugin that converts data from 16 to 15-bit, it is (or was) Photoshop itself. I discovered this during testing with Photoshop 6,...
Joe, The resulting subexposure duration is very close whether I use the Starizona or CCDWare calculator. If the estimated duration is 240 sec and I expose for...
Seems like forever since I've been able to get out on a clear night (not that we've had many clear nights!). Finally last week I was able to get out and get...
I was wondering about those actually. In Maxim DL, are you better off saving in IEEE floating point or 16 bit FITS? I usually do the stretching and other...
... It depends. If your image contains only integers between 0 and 65535, then there's no difference. If it contains fractional values or numbers beyond ...
... I have two filters that I use along with my colour filter wheel. One is the Hutech LPS, and the other is the Hutech NBN. The NBN is great for nebular...
Gordon you appear to understand the 'minimum' exposure calculators the way I do, they suggest the 'minumum' exposure to get above shot and camera noise. Your...
Calibration would be required for any sub-exposure calculation. The dark current is unwanted signal which must be removed, and has nothing whatsoever to do...
Hi Ken, I've got the 3" Bellerophone focuser after first testing the 2". For imaging, I'd recommend the 3". It's significantly more stable. I'm pretty happy...
I have one Ken, the only real problem I have is that you can't rotate the camera much as it hits the focusing screw. This is especially bad if you're using the...
I sometimes have values that exceed the 65535. However, I don't think that Photoshop supports 32 bits IEEE float. So I imagine that Photoshop automatically...
Hi YG: IIRC, Photoshop will not import IEEE format images. So I always save my MaxIm results as 16 bit Tiff and import that into PS. Bert katzung1@... ...
... I have a 3" Bellerophon II, and it's a magnificent piece of work. Extremely stable and focusing is very precise. I bolted mine directly to the SCT rear...
... Sorry; I meant to write "bolt to the focuser _and_ clamp to a camera nosepiece...." Mike -- Mike Dodd Montpelier, VA USA http://astronomy.mdodd.com...
Another solution to the rotation problem: I've got an Optec Pyxis and RoboFocus. The Pyxis does the same job as the spacer, (and of course, does the rotation...
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