Guidescope Crosshairs made from my Daughters Hair!
Today I decided to put some crosshairs into the guidescope I am using for visual aligning whilst imaging.
After several experiments I discovered that crosshairs need to be located in the EP or they are just blurrs! I worked out which EP was better for my aligning and then the construction started.
I made a small ring out of a lid from a bottle of incense oil. I acheived this by hacksawing the top of the lid off, which then gave me a band. Then I cut down the side of the band and kept cutting until the band was small enough to fit up inside the EP I chose. (1.25" 25mm Wide angle)
Then using a craft knife I pushed the blade into the edge of the band to create 2 parallel nicks. then I rotated the band 90 degrees and made 2 more parallel nicks.
I then asked my 14yo daughter for 4 hairs ("You're wierd Dad!") and I placed them into the parallel nicks in the band and pushed the band into the EP.
It works a treat!
The hairs aren't exactly parallel or at 90 degrees to each other but when you work in such a small scale it's pretty hard to get it dead accurate. My next trick is to work out how to illuminate them!
The reason I used parallel hairs is so I created a box in the centre to place the Astro object.
Pics below are:
1. the EP I used,
2. the crosshairs in the EP
3. The view through the scope.
Last edited by ballaratdragons; 01-01-2006 at 08:43 PM.
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