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TELESCOPES TIPS

6

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TELESCOPES & ASTRONOMY

BACKYARD VIEWING
FAINT OBJECTS
CARROTS

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FAINT OBJECTS

The ability to see faint objects like galaxies or planetary nebulae in best detail depends on on how much light can be gathered and how much stray light from other sources can be kept out. eg. street lights. When viewing diffuse nebulae like the Orion Nebulae, the brighter you can make the object, the more it will fill up the whole eyepiece with detail. If the Orion Nebulae is viewed from the city, where there is lots of light pollution, the object may only take up a the center of the eyepiece. If the Orion Nebulae is viewed from a site where there is no light pollution, it's hard to find an eyepiece with enough wide field to fit it all in! The following faint object tips can be used in
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TIP LINKS:
TELESCOPE
IMPROVEMENTS
GENERAL
PLANETS
conjunction with the general tips.
ADVANCED
The Telescope
Use cardboard to extend the tube of the telescope. This will cut out any stray light which hits the lens or secondary mirror from anywhere but the direction the telescope is pointed. It doesn't really matter how long you make the extension, but the telescope must be rebalanced if the addition weighs anything.
If there is a gap at the mirror end of your reflector where light can get in, put cardboard or material around the gap.
When Observing
A black piece of material put over your head and the eyepiece together will keep you dark adapted.

CARROTS

Carrots contain vitamin A. If you have a deficiancy of this vitamin it will effect the way you can see in the dark. Most vitamins we have to much of pass straight through our bodies, but vitamin A can be overdosed on. So don't buy a jar of Vitamin A and O.D.!

Eyepieces
The lower the magnification of an eyepiece, the wider the field. There
are eyepieces available which are 40mm in focal length (dimensions).
40mm eyepieces do not suit all telescopes, so ask us first. Other eyepieces have many pieces of glass in them to enhance the field of view double that of a standard eyepiece of the same focal length.
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CONTENTS
Contact Us - telescopes@adam.com.au
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