I collimate my SCT using a star as recommended by all the experts. However I do not understand the reason why the alignment of the secondary mirror cannot be done with a laser the same way as with a newtonian. The only reason I can come up with is that an SCT as a correct plate which needs to be taken into consideration while collimating. It would be so much easier to colimate an SCT during daylight hours rather than messing around with allen wrench or in my cash little knobs in the dark. If anyone could enlighten me on the reason I would appreciated.
Thanks
Luca
Thanks
Luca
