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Auto Focus
Hi Mark. I think you are talking about your Electronic micro focus. The electric focus us used to make fine tune adjustments once you have the best focus you can get with the focus knob. You will also notice that you have a mirror lock knob as well. Make sure the mirror lock is off (loose) and focus your star or abject with the focus knob and then lock the mirror lock. You will notice that when you adjust the focus your image (object) may move a little in the eyepeice.
This is why we have the mirror lock to stop this when using higher power eyepeices as it can make the object move out of veiw each time we focus. This is where the electric focus comes in. once you have a rough focus and have locked the mirror you can do all you fine tume focus with the electric focus without getting any image shift.
Here is a tip before you start. Before you do any viewing turn on your scope and use the electric focus. IE press the button and leave it pressed till the focus get to the end of it's travel. You will hear it change sound as it reaches the end of its travel. Have a look at the focus unit as you are doing this and you will see it moving in or out. When it gets to the end remember its position and then press the other button to move the focus the other way until it gets to the other end, watching it all the time. Now you can see how far it moved in and out... Now move it back the other way so it is in the center of it's travel. Now when you do a rough focus on your object you will lock the mirror and use the Electric focus. It will work for you this time as you will have adjustment in both in and out. You may not have been able to get it to work before as you may have already been at the end of it's travel..
I hope you understand my instructions.. I also think there is a section about doing this in the instructions under electronic focus..
Cheers
Mardy
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