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DayStar Filters SolaREDi Odyssey Operating Manual page 4

Hydrogen alpha solar telescope

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Owners will beneift from getting to know the use and function of each of these two
adjustment knobs. The crayford style focuser will behave differently with the weight
of an eyepiece and diagonal / or camera than it does without added weight on the
telescope. Use caution when adding or removing heavy accessories in the drawtube.
Wing
Shift: If you are interested in exploring wing shift for experiments or variaiton in
view, the SolaREDi Odyssey offers +/- 0.5Å range of red / blue wing shift with the use
of the tuning knob.
Clockwise will tune the filter towards the red wing and
Counterclockwise turning will tune the telescope towards the blue wing.
Filtration and safety:
The optical solar filter stack is mounted at the rear, eyepiece end
of the SolaREDi Odyssey telescope. Alone, it provides off-band rejection density
greater than 6.0 from X-ray to beyond 2 microns. This means that it is safe to look
directly into the rear of a properly assembled SolaREDi Odyssey telescope without an
eyepiece. The SolaREDi Odyssey telescope requires no additional blocking filters or
special diagonals or eyepieces and unless it
is disassembled with tools, the telescope
cannot be rendered unsafe.
Should any
element of the filter age or degrade, that
degradation would cause a darkening of
the image and not an unsafe filtration.
- SLR, DSLR, CCD and webcam cameras
may be mounted in the 2" focuser using a
standard 2" to T-Thread camera adapter
and appropriate T-ring to camera adapter.
35mm film cameras or most DSLR's will
show full disk. Monochrome cameras are preferred over color models, for their
greater resolution and sensitivity at H-alpha.
We recommend the Moonglow Technologies Interference Eliminator with DSLR
cameras to eliminate 'Newtons Ring' interference patterns.
- Bino-Viewers can be used with the SolaREDi telescope. Barlows or negative lenses
are not necessary, as the focus travel of the telescope has already been increased by
the application of a TeleVue powermate.
- DayStar recommends 30-5 5 5mm Plossl eyepieces.
Note about digital imaging:
Hydrogen Alpha is a very narrow or monochromatic
wavelength of light. Many cameras which use a color CCD chip have sensors for blue,
green and red. The pixel sensors which are sensitive to blue and green have no data
in Halpha, so a color CCD chip will give 1/4 of the resolution that a monochrome chip
of the same size does. Also be aware that image processing algorithms often aver-
age pixels, which reduces image quality in addition to reduced resolution. While
color CCD imaging such as DSLR is convenient and accessible to the public, it includes
a number of unavoidable inherent limitations.
4
Fortunately, short exposures mean imagers can sort from
hundreds of frames over a span of time to select from superi-
or seeing cells which occur regularly. High speed imaging
and sorting from hundreds of frames greatly reduces the
need for stacking.
• The Best Digital imaging success in Hydrogen Alpha comes with a MONO-
CHROME SENSOR.
• Digital imagers should consider a way to tilt their chip through adapters or con-
figuration.
• Digital imagers should consider high speed imaging to image-sort for superior
seeing cells.
D D a a y y s s t t a a r r r r e e c c o o m m m m e e n n d d s s M M O O N N O O C C H H R R O O M M E E C C C C D D a a n n d d h h i i g g h h s s p p e e e e d d
i i m m a a g g i i n n g g c c a a m m e e r r a a s s w w i i t t h h i i m m a a g g e e -s s o o r r t t t t e e c c h h n n i i q q u u e e t t o o o o v v e e r r c c o o m m e e
s s e e e e i i n n g g l l i i m m i i t t a a t t i i o o n n s s . . W W h h e e n n N N e e w w t t o o n n s s ' ' r r i i n n g g s s a a r r e e p p r r e e s s e e n n t t , , w w e e
r r e e c c o o m m m m e e n n d d t t h h e e M M G G -0 0 4 4 0 0 8 8
Care and cleaning:
While not in use, we recommend that users store the SolaREDi
alpha telescope with its end caps on, in the provided heavy duty re-sealable plastic
bag with dessicant dehydrating packets; in a climate controlled environment. The
SolaREDi telescope optical filter life expectancy is extended up to 2-3 times by cli-
mate controlled storage.
Do not touch the internal, red optical elements of the SolaREDi 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 gen-
tly 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 per-
formance. Fingerprints, smudges and smears must be cleaned off. Preferred
cleaning method is to return the SolaREDi to the DayStar Filters laboratory for
proper factory cleaning. Do not unscrew, open or separate your SolaREDi 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 "Q-tip" 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 tube and other parts are powder-coated for durability and can be polished
with any non-abrasive car wax. Red anodized surfaces can be cleaned with
Windex.
R
G
G
B
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