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Chapter 5, Section 1
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Rediscovering my telescope, this part of the focus knob is loose and won't stay on. Is there a way to fix this? Its an Orion Astroview 90mm EQ : r/ telescopes
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![Fullerscopes Telescope Mountings: Going H-alpha: Back focus adjustment [again!]](https://4.bp.blogspot.com/-G52HpOlQCp8/Wqqo6JH9kuI/AAAAAAABLBY/0ozPWMXr50QKintNR8FPZnS96F7L-7cagCLcBGAs/s1600/P1310789%2Brsz%2Btxt.jpg "Fullerscopes Telescope Mountings: Going H-alpha: Back focus adjustment [again!]")