Ccd Imaging For Deep Sky Objects; Terrestrial Photography; Metering; Reducing Vibration - Celestron XLT series Instruction Manual

Omni xlt series telescopes
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CCD
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CCD
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pecial cameras have been developed for taking images of deep sky images. These have evolved over the last several
years to become much more economical and am
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ow to get the best images possible. The technology continues to evolve with better and easier to use products on the
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telescope makes an excellent
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Adapter on the refractors and Newto
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ig al camera you will need the Univ
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o can take images of various scenic views, wildlif
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with focusing, speeds, etc. to get the best image desired.
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The Omni Series telescopes hav
phot graphically, you need to set
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metering which lets you know if
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hanging the shutter speed. Consult your camera manual for specific information on metering and changing shutter
speeds.
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Re asing the shutter manua
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shutter, use a cable releas
possibility of introducing vibration. Mechani
Bl ry pictures can also result from shut
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p ds greater than 1/250 of a second w
ee
length is virtually unlimited.
A
nother way to reduce vibration is with
ground and tripod feet. They
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ateurs can take fantastic images. Several books have been written on
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teleph
oto lens for terrestrial (land) photography. Your telescope is in essence a
R cameras are mounted directly to the telescope (using the built-in T-
nian or using the # 93633-A T-Adapter for the Schmidt-Cassegrain). For using a
ersal Digital Camera Adapter (# 93626).
e, nature, and just about anything. You will have to experiment
e fixed apertures and, as a result, fixed f/ratios. To properly expose your subjects
your shutter speed accordingly. Most 35mm SLR cameras offer through-the-lens
your picture is under or overexposed. Adjustments for proper exposures are made by
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lly can cause vibrations, producing blurred photos. To reduce vibration when tripping the
e
. A cable release keeps your hands clear of the camera and lens, thus eliminating the
cal shutter releases can be used, though air-type releases are best.
ter speeds that are too slow. To prevent this, use films that produce shutter
hen hand-holding the lens. If the lens is mounted on a tripod, the exposure
the V
ibration Suppression Pads (#93503).
reduce the vibration amplitude and vibration time.
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38
These pads rest between the

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This manual is also suitable for:

Omni xlt 102Omni xlt 120Omni xlt 150Omni xlt 127

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