DayStar Filters Combo Quark Hydrogen Alpha Eyepiece Руководство - Страница 7
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in superior design. Furthermore, the adjustable eye cup offers additional
contrast by allowing the user to dark adapt during sunny days.
Eyepiece features we found to increase performance include:
- "Fully Multicoated" - Of those eyepieces which did better than others,
those marked "fully multicoated" offered better views from less internal
scattering.
- Blackened optical edges - Tele Vue and other eyepieces which
performed better all had blackened edges of their optical elements. This
also reduces internal scattering within the eyepiece.
Maximizing the viewing experience:
Daytime viewing results in stray light entering your eye that can make it
hard to see through the filter. We recommend a viewing hood or cloth be
placed over your head to limit the stray light that enters your eye,
allowing fainter prominences and more surface detail to be observed. A
comfortable chair also improves the experience, allowing the eye to stay
steady for longer periods so as to pick out more subtle details on the
surface of the Sun.
About Seeing Limitations and Resolution:
Solar observing seeing conditions vary greatly from nighttime conditions.
During the daytime, radiant heating from the sun affects seeing
significantly. Characterized by turbulence or shimmering as seen over a
hot street, seeing can cause significant impact on quality of solar
observations.
- Bad seeing is caused by air of different temperatures mixing. This
typically happens within the lowest 10 feet of air. It occurs most often
over
pavement,
dark
objects,
rooftops
and
sometimes
trees.
- High cirrus clouds or "scuzz" will cause scattering of sunlight in the high
atmosphere which often makes for bad viewing conditions. A classic
sign of high cirrus clouds is the inability to achieve focus, or the need to
"chase focus", or a lack of contrast.
- A jet-stream moving overhead can also hurt seeing conditions even on
a clear day.
DayStar Filters are high power viewing platforms and this high resolution
can be susceptible to seeing issues. Solar Observers using high