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Photography with a Digital Camera
Some digital cameras present problems for the astrophotographer: Many models
have lenses that cannot be removed, difficulties in attaching to a telescope, possible
vignetting, lack manual focusing and shorter exposure times.
Shorter exposure times is one of the biggest drawback. Long exposures with digital
cameras introduce undesirable noise and artifacts into a digital image.
Some tips for better photos:
• If you cannot remove the lens to your camera, look for a commercially available
digital T-adapter. New solutions for attaching a digital camera to a telescope are
becoming available as time goes by.
• If the camera is not directly coupled to the eyepiece, keep it as close to the
eyepiece as possible and center the image to be photographed to minimize
vignetting (darkening of the edges of the photo).
• Try to block ambient light (from street lights, house, etc.) from the eyepiece and
the camera with a piece of cardboard, a screen, etc.
• Keep extra (charged) batteries on hand for your camera as digital cameras often
drain batteries in a short period of time. Rechargeable Lithium batteries provide
power for a longer period than non-rechargeable batteries. If practical, use an
AC adapter.
• Avoid short-focus eyepieces. They present many difficulties for digital cameras.
• If using manual focus, set to infinity. Otherwise, using the camera’s autofocus
is OK.
• Experiment with your camera’s exposure, brightness and /or contrast settings.
Keep notes for future reference.
• Clean eyepieces and camera lens as needed.
• Many digital cameras have a manual ISO setting. Short exposures times work
the best.
• Use your camera’s highest image quality and lowest compression settings.
Although this fills up your camera’s memory more quickly, it produces the best
quality photos.
• Use the camera’s timer or remote shutter release (if available for your camera)
to minimize vibration. Wireless shutter releases may be available for some model
digital cameras. If you do not have a shutter release, use the camera’s timer
(sometimes called “self-timer”), which is available with most digital cameras. The
timer may also minimize vibration.
Photography with Meade’s AutoStar Suite™
The AutoStar Suite with Meade LPI™ (Lunar Planetary Imager) or Meade Deep Sky
Imager™ turns your Meade LX200-ACF telescope, AutoStar and PC into even more
powerful and easy-to-use astronomical instrument.
LPI (Fig. 21) and Deep Sky Imager (Fig. 22) combine the power of an electronic
astronomical imager with the simplicity of a web cam. Check out the following
imager features:
• Achieve great results the first time out on the Moon, planets, deep-sky objects
and terrestrial targets.
• Easy to use with real-time display of object on your PC screen. Just center, focus
and shoot.
Fig. 22: The Deep Sky Imager.
Fig. 21: The Lunar Planetary Imager.
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