dslr macro tubes//canon 400d to sw ed80

[shirva]

Hi..can any body shed light on what would happen to a image of say the moon..by fitting macro tube/ 9mm/16mm/30mm and lens mount adapter/camera body mount adapter to a canon 400d to a sw ed80. .many thanks for any light shed on this..Davy

[Cornelius Varley]

A macro tube is designed to placed between a camera and a normal dslr lens allowing the len to focus much closer than it normally would. If you place a macro tube between the camera and the telescope you would then need to wind in the focuser by the length of the tube to get the camera back in to focus. The macro tube would act as a normal extension tube in this case.

[shirva]

Basically not a feesable idea as a focal reducer then..

[Steve Ward]

A focal reducer is an optical item comprising a glass element that adjusts the cone of light emerging from the scope .

[butlermike]

i expect the extension tubes are the opposite of what you're after aren't they?

You need the 1.4x or 2x converters to get a bigger image on the camera since you're using the scope as a large lens. But then they're just as expensive as focal reducers!