Lunt B600 on larger scopes

[Eris]

Does anyone know if I can use this CaK unit safely on larger scopes for imaging only? Yes I understand there is a field difference but I was wondering if Lunt change their filter combinations around to accomodate different focal lengths.
I have been searching for an answer to this question for some time. Lunt are yet to reply.

[Merlin66]

Gerard,
I think up to 125mm aperture and a good focal ratio close to f10 will work OK
I use a similar setup with my DIY CaK filter setup with no problems.

[Eris]

Hi Ken, thanks for the info on the B600 it’s much appreciated.
Good to hear from you again. :thumbsup: