Posted 10 January 2013 - 10:23 PM
Posted 11 January 2013 - 12:21 AM
Posted 11 January 2013 - 09:13 AM
No. Sorry. Gotta send it back and get the right size. The proper curve depends upon it, if you want the effect of a curved vane.
'Buddha is right, the vanes must be part of a circular arc to get the even distriution of diffracted light.
However it would seem that an alternative to sending them back might be to use mounting spacer blocks at the attachment points (just pieces of wood) inside the tube.
Posted 11 January 2013 - 11:04 AM
Spacer blocks are a fine solution if they don't obstruct. Depends (approximately) on the mirror's clear aperture plus the largest usable field size (i.e. about 1.25 or 2 inches).
Posted 11 January 2013 - 08:42 PM
Posted 12 January 2013 - 02:35 PM