christos57
New member
- Joined
- Mar 8, 2010
- Messages
- 3
- Programming Experience
- Beginner
Hi
Thank you for taking the time to read my post
I am very new to vb net so please be gentle with me
I have recently downloaded 2008 express and found it be be very easy to use for the most part now for my problem
I own a low end telescope 5 inch Newtonian and ever time I try to focus it it takes about 3 seconds to stop shaking so I decided to build a focuser with a stepping motor easy then I decided to interface this into my laptop with the aid of vb.net 2008 express again not to hard so I built an interface that either manually send a pulse to drive the motor 1 step (1.8 degrees) or half step (0.9 degrees)
and an auto mode that with the use of a slide bar I select an amount of steps the motor will drive, the direction of the drive and weather it is full or half steps. Then I added the input from my modified webcam so I can view the image on the same form all not to hard.
Now what I want to do is
1. to view the image
2. select a part of the image
3. check the difference between the 1 pixel and the 4 pixels around it to determine if there is a great variance between then then move onto the next pixel
4. store the greatest variance in a variable
5. move the stepper 1 more step and repeat steps 1 through 4 until the best focus is obtained
any suggestions would be great or ideas on an easier approch
thanks in advance
christos
Thank you for taking the time to read my post
I am very new to vb net so please be gentle with me
I have recently downloaded 2008 express and found it be be very easy to use for the most part now for my problem
I own a low end telescope 5 inch Newtonian and ever time I try to focus it it takes about 3 seconds to stop shaking so I decided to build a focuser with a stepping motor easy then I decided to interface this into my laptop with the aid of vb.net 2008 express again not to hard so I built an interface that either manually send a pulse to drive the motor 1 step (1.8 degrees) or half step (0.9 degrees)
and an auto mode that with the use of a slide bar I select an amount of steps the motor will drive, the direction of the drive and weather it is full or half steps. Then I added the input from my modified webcam so I can view the image on the same form all not to hard.
Now what I want to do is
1. to view the image
2. select a part of the image
3. check the difference between the 1 pixel and the 4 pixels around it to determine if there is a great variance between then then move onto the next pixel
4. store the greatest variance in a variable
5. move the stepper 1 more step and repeat steps 1 through 4 until the best focus is obtained
any suggestions would be great or ideas on an easier approch
thanks in advance
christos
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