3
Care & Maintenance
Care should be exercised when using all optical and mechanical telescope acces-
sories. Keep your Field Flattener in a protected environment when you’re not using
it, and place the dust cap and threaded metal cap on the Field Flattener for storage.
Avoid touching the glass lenses and coatings. If the lens should become dirty, you
may want to clean it. Blow off all loose dirt with a blower bulb. Use only optical lens
tissue and good-quality lens fluid. Wet a folded tissue and gently wipe the surface
of the lens. Immediately use a second piece of lens tissue to gently dry the lens off.
Do not rub or apply pressure, as this may scratch the lens if dust or grit is present.
Field
Flattener
DSLR
camera body
T-ring
2" focuser on
telescope
Field
Flattener
CCD/CMOS
Camera
55mm
Xmm
2" focuser on
telescope
Distance from CCD
chip to Field
Flattener Flange
should be 55mm
“X”mm of additional spacing may
be required to achieve 55mm,
depending on make and model
of camera.
Figure 2.1.
Figure
2.2.
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