the green view with the lens on and close up to the focuser:
that must be a case of focal point alteration:
either by moving the primary mirror (eeek!) or by getting a device that somehow shifts that focal point mechanically/optically/virtually to the observed 10-15cm above the tube?
and to what cost? I mean - cost in light an weight?
but I wouldn't HAVE the lens on once I connected the naked camera. So how would one go and find out the correct focal point for a lens-less camera?
Any input - just some keywords, even, would be very helpful! Thanks
