Telescope Magnification Chart

35mm Film		Lens		4mm CCD		Rel. Mag.
		28mm f3.5				0.5x
		35mm f3.5				0.7x
		50mm f1.7				1x
		70mm f4.5				1.3x
		135mm f2.8				2.5x
		180mm f5				4x
		300mm f5.6				7x
		Telescope No Barlow				20x
		Telescope 2x & 3x Barlow				100x

Notes:

The magnifications listed have been measured from the images above and are relative to the 50mm "standard" lens.
The CCD measures 4.8mm x 3.6mm compared to the 36mm x 24mm of the film frame - this gives the CCD frame an apparent extra magnification of 7.5x compared to the film.  As the film can record finer detail than our CCD, its advantage is reduced.

The lenses used were: 28-70mm zoom, 50mm fixed, 135mm fixed, 75-300mm zoom (only works between 180-300mm)
The telescope is 1000mm long, 200mm diameter (f 5).

The house in the film frames was about 150m from the telescope. The map was 1.67m from the CCD.
The two "telescope" CCD images have been simulated - it is not possible to focus on such a close object.
The intensity settings on the CCD were not changed to demonstrate the relative brightnesses of the lenses rather than to optimise image quality.