7
Using the telescope for prime focus imaging
Before installing the field flattener onto the drawtube of the
focuser, the 2" ring adaptor
(2)
needs to be unscrewed and
removed.
In order to easily unscrew the ring, hold with one hand the ring
(1)
at the end of the drawtube and then unscrew the 2" ring adaptor
(2)
with the other hand.
The Sky-Watcher ESPRIT 150 Field flattener has been specifically designed for your
telescope. It guarantees excellent field flatness across the entire 44 mm imaging plane
and ensures full illumination with extremely minimized halation and zero color fringing
even on bright objects.
No "universal" field flattener available on the market will deliver the premium results
achieved with the Sky-Watcher ESPRIT 150 Field flattener
.
The Sky-Watcher ESPRIT 150 Field flattener
is not compatible with other telescopes
,
even refractors with the same aperture and same focal length.
Installing the field flattener and a DSLR (Digital Single-Lens Reflex) camera
1.
Screw the drawtube adaptor
(1)
at
the end of the focus tube.
2.
Screw the field flattener
(2)
onto
the drawtube adaptor
(1)
.
3.
Screw the extender tube
(3)
onto
the field flattener (
2)
.
4.
Screw the enlarged 48mm T-Ring
(4)
onto the extender tube
(3)
.
The enlarged 48mm T-
Ring
may not be included
with your telescope
and
should match your DSLR
camera's manufacturer and
model. Please check with
your reseller to get the
correct 48mm Enlarged T-
Ring for your DSLR
camera.
5.
Install your DSLR camera on the
48mm enlarged T-Ring
(4)
.
