can a i use a cheshire to collimate my c8 edge

[iwols]

can a i use a cheshire to collimate my c8 edge during the day thanks

[StevieDvd]

Sorry, as far as I recall a cheshire is not really the tool for an sct, a star test is more appropriate. 

[CraigT82]

You need a mirror with a centre spot (donut) to use a cheshire eyepiece, and with a big hole in middle of the mirror there is nowhere to put one! 

[doublevodka]

There's some nice info here that may help - https://starizona.com/blogs/tutorials/collimating-a-schmidt-cassegrain

[StevieDvd]

The main point to pickup and mentioned in the link above (I missed that at first) is:

"After adjusting the screws, be sure to return the star to the center of the field of view by adjusting the position of the telescope. "

Surprising what a difference that made on a star test.