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
SVX80T
, one is a flattener and one is a
reducer/flattener.
SFF3 Flattener
: The SVX80T is an f-6 optical system with a 480 mm focal length. The
SFF3-80-3SV will convert your telescope into a 480 mm focal length f-6 super telephoto
lens. The SFF3-80-3SV works with cameras with full frame and smaller ccd chips.
SFFR .74 Reducer/Flattener
: The large SFFR .74 reducer flattener will flatten
the field and reduce the photographic speed. Using it you will be shooting at 360
mm, f-4.5. This reducer/flattener will work with cameras using full frame or
smaller ccd chips, same as above.
The SFFR .74 reducer flattener mounts
into
the focuser drawtube. See page 16
for more information.
Without a corrector, stars will become
elongated away from the center
With a properly spaced corrector stars will
appear as they should
