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Old 21-05-2011, 09:08 AM
Barrykgerdes
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Barrykgerdes is offline
 
Join Date: Feb 2007
Location: Beaumont Hills NSW
Posts: 2,900
Hi Morry

Don't despair about trouble finding objects in you dobsonian. It takes a bit of practice to use higher manification in a manually steered telescope.

The first thing to do has already been mentioned as to aligning your view finder to your eyepiece and the advantages of a Telerad type finder.

The next thing to do is to check out your eyepieces so that they are parfocal. That is use spacers if necessary so that quick changes do no need a refocus.

Now find your object in your lowest magnification eyepiece. Most likely a 26mm eyepiece. Watch the direction it drifts as you view it and practice the direction you need to follow to keep it in view. Noting the drift direction place your object in the position that will give the longest drift path and then quickly change to your 9mm eyepiece. It will drift across your view a lot faster. Keep it centered while fine focusing and practice following it at the now much faster drift rate.

If you only have a cheap 6mm eyepiece I think you should not bother with it as the view while being slightly larger will not be any clearer.

If you lose the object put your 26mm object in and start again from there as locating objects in a small FOV will be very difficult unless you know the sky well.

Barry
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