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Old 15-01-2019, 04:44 PM
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traveller (Bo)
Not enough time and money

traveller is offline
Join Date: Aug 2011
Location: Melbourne
Posts: 2,106
I have modified a straight through 50mm finder into a guidescope (which is the same process you are trying to achieve). Steps
1. Unscrew the rear "eyepiece"
2. Use a Dremel to slightly enlarge (sand off) the internal threads at the rear.
3. Push in a 2"-1.25" adapter (self centering types are ideal). You may need to repeat step 2 to get a snug fit, and use a bit of silicon to hold the adapter firmly into the finder scope tube.
4. Insert a 1.25" camera/eyepiece of your choice.
See photo for end result.
Hope that helps
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