42
Looking at or near the
Sun
will cause
irreversable
damage to your eye. Do not point this telescope at or near the
Sun. Do not look through the telescope as it is moving.
Shorter exposure times is one of the biggest drawback. Long exposures with digital cameras
introduce undesirable noise and artifacts into a digital image. This limits the range of astro
images to the Moon, planets and bright stars.
Some tips for better digital 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 help 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 LX90 telescope, AutoStar and PC into even more powerful and easy-to-use
astronomical instrument.
LPI (
Fig. 17b
) and Deep Sky Imager (
Fig. 17a
) 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, brighter deep-sky objects and
terrestrial targets.
• Easy to use with real-time display of object on your PC screen. Just center, focus and shoot.
• Magic Eye software-assisted focusing.
• Automatic and manual exposure control from .001 to 15 seconds (up to 450x longer than web
cams).
• Automatically takes multiple exposures.
AutoStar Suite Software includes powerful tools to help you get the most from your Meade
LX90 telescope:
• Sophisticated planetarium program with over 19 million objects.
• Select objects from the planetarium display and the telescope slews to those objects.
• Create time-lapse movies of objects, such as Jupiter
• Create your own Guided Tours.
• Advanced Image Processing Software including Unsharp Masking, Convolution Filtering and
many other features.
• Control all AutoStar functions from your PC.
• Talking Telescope software translates AutoStar text to synthesized speech through PC
speaker.
• Includes a cable to connect your LX90 model to your PC.
Fig. 17b:
The Lunar
Planetary Imager.
Fig. 17a:
Meade Deep
Sky Imager
