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ASTROPHOTOGRAPHY

5

astrophotography
FRONT PAGE

EYEPIECE PROJECTION
CAMERA PHOTOS
FILM PROCESSING

Cont'd.
astrophotography
CONTENTS
  • using a piece of cardboard over the lens of the camera before opening the shutter and then removing the cardborad will stop the camera and telescope moving, caused by pushing the button for exposure. Putting the cardboard back over the lens to end the exposure will stop the movement when closing the shutter of the camera again. As long as no light enters the camera while the cardboard is covering the lens, no mistakes by bumping will show up on the image. The use of shutter release cables can minimise the movement, but they can still pull at the camera when used.

  • Eyepieces have threads in the bottom of them for different filters and reticles to be screwed in. A reticle which has cross hairs are used as guides to keep the star your tracking more accurately centered in the eyepiece.

  • The lens of a camera will be the first thing which will get fogged up on those dewy nights. A ring of cardboard to extend the lens of the camera will help reduce the dewing effect.

  • Some filters can be purchased, which are actually just coloured glass, for a minimal amount of money. These can change the effect of the photographs greatly by enhancing some objects. A professional set of filters which cut out different wave lengths of light are used to bring out different colours in the photographs. Expect to pay around $200 for a set of 5 or so.
cameras

PROCESSING CAMERA PHOTO FILM

One hour processing is fine for developing your photos but, always include a photo of something bright every 3 or 4 shots. This will give a reference point as when looking at the film to be developed, the borders of the night sky shots cannot be seen clearly. It's possible your photos will be cut straight through the center because it appears as though there is nothing there to the developer. This problem can also be be cured by mounting the photographs yourself, as slides. It's a good idea let the developer know what's on your film. Sometimes when the pictures are developed by some processors, the background is not made black as the machine operator can choose the tint themselves.
film
FRONT PAGE
processing
CONTENTS
astrophotography
END OF ASTROPHOTOGRAPHY SECTION
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