This simple application just grabs an area of your windows screen and finds the focussing accuracy:
download: Bahtinov grabber (1763)
Cloudy Nights Thread on this tool
It updates 10x per second, so you can also track a live viewing window, or a youtube movie:
An the latest additions:
- the error now has a sign (positive or negative)
- a red ball clearly indicates the direction of the error, indicating in which direction to adjust focus
- the average error of the last 5 seconds is shown, helpful in poor seeing conditions
Hi Neils, your application is very interesting. I am the maker of the You Tube video on your site! I have made a new mask – the ‘Carey mask’, which I think can be even more accurate than the Bahtinov. Have a look at http://www.btinternet.com/~gfcarey/careymask.htm
I think you would be able to make an analyser for it based on comparing the separation of the pairs of spikes.
Please email me if you are interested.
Regards,
George
Hello,
I have down loaded the software, and a box with Set Capture Area, and Donate is all that shows up. If I click on Set Capture Area, the whole screen lightens, and thats all that happens. Am I doing something wrong?
Thank you for your time.
Hi Neils,
This is a really great application!
However I have found that error changes for a same image depending on the area you capture.
It is very difficut to make a perfect square area with the center on the star. It would be a lot easier if, for instance, the user could click on the center of the area, usually the star, and then moving the mouse further or closer a bigger or smaller square would be drawn. And finally another click to set the definitive size of the square.
Best regards,
Sergi
>
You must now select your area by dragging a box around the displayed star with the mouse cursor!
Regards,
Steve
Hi, I want this software to make a sound when it reaches good focus, can u fix that ? Can you share the source code? Thank you.
I have added sound, just download the grabber again!
Ah, thats perfect!
Thanks alot! This will make my imaging so much easier.
Maybe your interested in making a very simple software that will help me out alot? I want to hear a sound on my computer when there is a suitable focus star on the screen, I cant always watch the screen to know if i got something or not. This will help alot
Im sure others will have good use for such a thing too.. Or maybe this tool can already do that for me?
I really think you have a great product here. Good Work! I have been using no-sound version and thought I would upgrade to the new one. After selecting an area, I get an error message indicating the program could not load or assembly ASCOM.DriverAccess Version-1.0.4.0. I am running Win XP with service pack 2. My splash screen looks different than the one before as it now also contains Focuser and Telescope sections. Is there something I need to configure?
Have you installed ASCOM? That is needed for focuser control.
ASCOM driver download link
Moitas grazas por teres feito este magnífico programa e por polo a disposición de todos nós. Graciñas.
Shame its not MAC