Astrophotography Targets Using An 80mm Refractor Telescope With 400mm Focal Length For Wide Field Astrophotography.... ?

Using an 80mm refractor telescope with 400mm focal length for wide field astrophotography.... ? - astrophotography targets

I want to do some astral ... either with a focus SKYWATCHER 80mm ED APO with a length of 500 mm of coordination, or perhaps a parallel with my camera on a motor mount and scope. My question is for the scenario of primary interest of a telescope ... Since the extension product of the focal length of the lens and the resolution of the eye, so I found myself with my digital SLR instead of the eyepiece to produce a telescope of 500 mm to an increase of similar pattern to use to my Canon 400mm lens f5.6L? This is not a destination "cheap". It uses ultra-low dispersion glass and is in a class of $ 1200 lens. The installation of a Canon 20D would produce an effective focal length of 640mm at f5.6.

So, in simple words, my question is connected with a camera to the telescope INSTAnnouncement of the eye, you have a kind of high-power amplifier?

I have no platform yet, but if I have a similar picture with my current goal, then I will ride more emphasis on monitoring and Quailty see one area and share Cheap achromatic visual and suitable for its purposes.