USING THE SFFR.72 LARGE REDUCER/FLATTENER
WITH THE STELLARVUE SVX152T-35SV (3.5” FOCUSER)
The optional SFFRR .72X - 152T
reducer/flattener converts your
SVX152T into a full frame astro-
graph for wide field deep sky pho-
tography. It reduces the focal length
to 912 mm and the photographic
speed from f-8 to f-6. To install and
use it follow these simple steps:
1. Unthread the rear assembly
including the 1 1/4” adapter, the 2”
adapter and the rotator.
2. Make sure to leave the M75
adapter in the focuser.
This giant reducer/flattener will convert the SVX152's f-8 visual optical system to a 152 mm f-6 (912 mm focal
length), full frame imaging system. If the camera’s sensor is not spaced correctly from the reducer/flattener
stars in the corners will appear elongated. The SFFRR.72-69 reducer flattener has a 65 mm back focus using
an M69X1 rear thread. Purchasing various versions of this reducer/flattener with the appropriate extension
tubes and spacer rings will enable it to be used effectively with various cameras on the market. The
SFFRR.72-48 has a 55 mm backfocus with M48 thread and is made for use with a DSLR and 48 mm T-ring.
If you are not sure how to properly configure your reducer/flattener and camera, call us at (530) 823-7796 or
email us at [email protected]. We want you to get the most out of your system so if you are ever having
difficulties we want you to call and let us help.
3. Thread by hand the reducer/flattener into
the focuser’s M75 adapter.
4. Thread by hand the camera onto the reducer/flattener.
Make sure the sensor in the camera is spaced correctly from
the reducer/flattener (see page 15).
16
1 1/4” Adapter
2” Adapter
M75 Adapter
(Leave this attached
to the focuser)
