[Bucky1379]

Hi

I have a Philips 900CN with a 1.25" adaptor (which I haven't been able to use yet) having removed the lens as per instructions. I have a question though.

I know that I calculate magnification for my scope using the Primary focal length divided by the eyepiece focal length (eg 1200 / 9 = 133.3333) but how do I calculate it with a no eyepiece and a lensless CCD chip at the focal point.

I have searched the internet a found 1 reference saying the result is about equivalent to a 4mm eyepiece but is this true and how is it calculated?

Thanks for any help understanding this.

Steve