14
ASTROPHOTOGRAPHY
While telescopes are designed to be used visually, they may be easily converted into a super photographic
lens using one of our dedicated photographic correctors. You remove the eyepiece, star diagonal and 2”
adapter from the focuser and you replace it with either our field flattener or focal reducer/field flattener.
Important! When using a field flattener or flattener/reducer, it is essential that the camera’s ccd chip
is positioned at a precise distance from the back of the field flattener or flattener reducer. If you see
elongated stars in the corners you will need to adjust this spacing. Call or e-mail us if you need
assistance!
There are two types of correctors made for the
SVX130T
, one is a flattener and one is a
reducer/flattener.
SFF3 Flattener
: The SVX130T is an f-7 optical system with a 910 mm focal length. The
SFF3-130 will convert your telescope into a 910 mm focal length f-7 super telephoto
lens. The SFF3-130 works with cameras with full frame and smaller ccd chips.
SFFR .72 Reducer/Flattener
: The large SFFR .72 reducer flattener will flatten
the field and reduce the photographic speed. Using it you will be shooting at 655
mm, f-5. This reducer/flattener will work with cameras using full frame or smaller
ccd chips, same as above.
The use of this reducer/flattener requires more inward focus. With the SVX130T-
35SV simply rack the focuser inward. (See page 16 for more detail)
Without a corrector, stars will become
elongated away from the center
With a properly spaced corrector stars will
appear as they should