DayStar Filters SolaREDi 66 Manual - Page 6

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How it works:

Light from the objective enters the blocking filter (at left), where

wavelengths near H alpha are transmitted while the rest are reflected

back out. Red H alpha light then passes through the telecentric barlow

lens elements to achieve a slower focal ratio, more parallel light beam.

The Etalon passes a very narrow range of light wavelengths, but it is

sensitive to temperature and light angle. In the SolaREDi 66, the Etalon

is heated to approximately 100-150° F to control the wavelength passed,

and the telecentric barlow controls the angle of light entering the Etalon.

While not in use, we recommend that users store the SolaREDi 66 with

its end caps on, in a climate controlled environment. The optical filter life

expectancy is extended up to 2-3 times by climate controlled storage.

Do not touch the internal, optical elements of the filter assembly. While

the exterior glass surface coatings are durable, they are easily

scratched. A few specks of dust will have no effect on the quality of the

image, and may be gently blown off with a squeeze bulb. Do NOT use

compressed air cans to blow dust off any optical surfaces. Small

amounts of residual 'film' will not affect visual performance. Fingerprints,

smudges and smears must be cleaned off. Preferred cleaning method is

to return the SolaREDi 66 to the DayStar Filters laboratory for proper

factory cleaning.

Do not unscrew, open or separate your SolaREDi 66 filter assembly. The

optical elements are held under pressure by design and will become

damaged if opened. Opening the optical filter assembly will void your

warranty. The safest cleaning method is to moisten a very soft, lint-free

tissue, cloth or "Qtip" with a pure acetone, methanol, or Isopropyl Alcohol

(reagent grade) and gently whisk away the stain. Do not apply solutions

directly to the glass surface. Stroke from the center of the aperture

outward only. After each cleaning stroke, use a fresh applicator. The

fewer strokes, the better! The metal housing and other non optical parts

are anodized surfaces and can be cleaned with Windex.