Light is particularly problematic for amateur astronomers, whose ability to observe the night sky from their property is inhibited by any stray light from nearby.
22.
The two telescopes ( 45 degrees and 135 degrees ) each have a one meter long baffle tube to reduce stray light during daytime viewing.
23.
Included with the sight is a lens hood for mounting on the ocular that reduces image quality-impairing stray light and a gray filter for glare reduction.
24.
The instruments required temperature stability and to maintain gain, and a high level of cleanliness to reduce entry of stray light and thermal emission from particulates.
25.
The intensity of stray light was shown to amount 10-15 % of the evanescent wave, which makes it difficult to interpret data obtained by objective-type TIRFM
26.
This lobe, the researchers note, offers the stacked lenses protection from stray light from above that might affect its ability to see horizontally across the sea floor.
27.
The MIC is mounted to the helium chamber inside the cryostat vacuum shell, not only to efficiently keep the instruments cold but to seal out any stray light.
28.
This form of stray light is not an issue for a telescope in orbit, making even a small-aperture telescope such as that on NEOSSat capable of detecting faint asteroids.
29.
While space-based coronagraphs such as LASCO avoid the sky brightness problem, they face design challenges in stray light management under the stringent size and weight requirements of space flight.
30.
A more complex instrument with a double monochromator would have a stray light level corresponding to about 6 AU, which would therefore allow measuring a much wider absorbance range.
