|
Just a note:
In the collimated newtonian, the secondary vanes will not cross the peephole reflection unless the secondary is mounted with full offset (away from the focuser and down the tube).
In the conventional model newtonian, where the secondary is centered under the spider vanes and centered in the tube from wall-to-wall, the process of collimation will build an offset into the system. Therefore, the spider vanes will not line up with the peep hole when the scope is collimated. You should not even use the spider vanes as an indicator for collimation at all.
|