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telescopes

TELESCOPES

TELESCOPE GLOSSARY

UPDATED 4th May 2008

1

2 Basic Types
REFRACTORS
These are the most popular telescope for beginners. They use a lens to gather and focus the light of the object it's pointing at. Using a lens which is made from two elements or more, the refractor reduces false colours.
refractor
HOME PAGE
reflector
There are two different types - the achromatic or apochromatic.
INDEX
schmidt
Basic features of refractors include:
PROS;
  • small and compact
  • maintenance free
  • high resolution (excellent planet scopes)
  • Can be used during the day for terrestrial viewing without the image being upside down
CONS;
  • expensive for larger models and apochromatic
  • less light gathering power than reflecting telescopes because of their smaller size
  • Awkward to use when pointing straight up (straight up is the best place to view with a telescope)
  • false colour especially in larger models
TELESCOPE LINKS:
Mounts
Light Gathering Power
Closer Look At Refractors
Closer Look At Reflectors
Dimensions
Balancing
Eyepieces
Cleaning Optics
Tips
REFLECTORS
Astrophotography
Build your own telescope
Reflectors gather light using a mirror which is curved. The curved mirror concentrates the light and is then magnified by an eyepiece. Newtonian reflectors (invented by Sir Issac Newton) can be identified by the eyepiece protruding from the side of the telescope. These are the most common and cheapest to buy. Other types of reflectors incorporate a front lens which corrects the incoming light first before hitting the main reflective mirror. These front lenses are called corrector plates and the different types used determine the type of reflecting telescope. The more popular types are the
Build your own telescope
for schools
Binoculars
Schmidt-Cassegrain and the Maksutov-Cassegrain.
just
To find out more about each type of telescope, including Newtonians,
click on their name. To find out the pros and cons of reflectors, please go to the next page.
cassegrain
maksutov
HOME PAGE
achromatic
INDEX
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Dobsonian Telescope

GSO DOBSONIANS
6" Dobsonian $290AUD
8" Dobsonian $335AUD
10" Dobsonian $580AUD
12" Dobsonian $870AUD
16" Dobsonian $2450AUD
16" F/4.5 Mirror Only $950AUD




DMK ASTRO CAMERA DMK21AF04.AS DMK ASTRO CAMERA DMK21AF04.AS Best Camera For Price
The Imaging Source
DMK21AF04.AS USB Camera
inc. 1.25" Adaptor, USB Cable Planetary & Moon Astrophotography
$445AUD$



Mirrors for Telescopes 16" Mirror F/:4.5
Coated Optics
Around 1/8 wave
B270 Glass
45mm Thick
Hand Corrrecting with new Overcoatings Service Available
$950AUD$ or $826US$ or 437


AutoStar Goto


AutoStar Computer Goto
120,000 Objects
Firmware Updates
Suits GP, GP/DX, EQ5, LXD55, CG5 Mounts
and more... $600AUD
 



toucam philips toucam philips 900nc NEW PRICING
PHILIPS ToUcam 840k
MODIFIED FOR LONG EXPOSURE
$275AUD

PHILIPS ToUcam SPC900NC
$145AUD
LONG EXPOSURE MOD. $285AUD
'AMP OFF' MODIFICATION $45AUD

 

green laser pointer
GREEN LASER POINTERS
1mW Class II
$80AUD$ or $68US$ or 33
5mW Class IIIa
$115AUD$ or $86US$ or 47
Doesn't Fade or Chew Batteries
Warranty & Repairs
$115AUD$ or $86US$ or 47


Side by Side Setup DMK ASTRO CAMERA DMK21AF04.AS SIDE BY SIDE SETUP
Suits Popular Mounts
Achieve Optimal Balance
Heavy Duty Dovetail Plate $135AUD
Heavy Duty Side by Side Plates $90AUD each
Side by Side Plates $50AUD
Small Dovetail $75AUD
- Spare Hole for Cameras - Plates Mount 90 as well



astrovid stellacam

StellaCam EX
$810AUD
Stellacam III
$1300AUD
StellaCam III Cooled
$1850AUD
ALL CAMERAS IN STOCK

Telrad Finder


TELRAD FINDER - $70AUD
CLICK TO SEE ACCESSORIES







tal telescopes ACUTER
65mm Spotting Scope
$220AUD$ or $153US$ or 88
80mm, 100mm or ED
Click for information



losmandy


LOSMANDY
New Prices

GM-8 with stepper motors $2420AUD
GM-8 with Gemini $3690AUD
GM-11 with stepper motors $3350AUD
GM-11 with Gemini $4895AUD
Titan (without Tripod) $10570AUD





Student Microscope in Wooden Box
STUDENT MICROSCOPE

- 4x, 10x, 40x Objectives
- 12.5mm Eyepiece (Various New and used Eyepieces available)
- Microfocus
- Solid construction
- Wooden Box with Key
$120AUD$ or $86US$ or 50




Starry Night Pro V6
TELE VUE 13mm ETHOS
- 100 Field of View
- Fits 1.25" or 2" Focusers

- "The Ethos is a stunning achievement that sets a new standard for wide-field eyepieces. Kudos to Tele Vue for once again raising the bar"
- BBC Sky at Night

$822AUD
IN STOCK











QUICK INDEX:

TELESCOPE INFORMATION

- TELECOPES
   - TELESCOPE TYPES
   - MOUNTS
   - LIGHT GATHERING POWER
   - CLOSER LOOK AT REFRACTORS
   - CLOSER LOOK AT REFLECTORS
   - TELESCOPE DIMENSIONS
   - TELESCOPE BALANCING
   - EYEPIECES
   - CLEANING OPTICS
  
- TELESCOPE TIPS
     - GENERAL TIPS
     - PLANET TIPS
     - FAINT/DEEP SKY TIPS
    
- DO NOT VIEW THE SUN UNLESS...
- ASTROPHOTOGRAPHY
- VIDEOING THE NIGHT SKY
- TELESCOPES AND ASTRONOMY LINKS
- HUBBLE SPACE TELESCOPE

TELESCOPE PRODUCT INFORMATION

- PRICELIST INDEX
   - LOSMANDY
   - PHILIPS TOUCAM
   - CELESTRON
   - HUTECH ASTRONOMICAL PRODUCTS
   - RIGEL SYSTEMS
   - WILLIAM OPTICS
   - PENTAX
   - ASTRO ENGINEERING
   - ADIRONDACK CCD IMAGING (STELLACAM)
   - BUSHNELL
   - TASCO
   - NOVOSIBIRSK (TAL)
   - SILICON POWER (MEDIA)
   - GREEN LASER POINTERS
   - VIXEN PARTOLOGY
   - SKYWATCHER
   - TELESCOPE CONSTRUCTION PARTS
   - SECONDHAND

- BYOT - BUILD YOUR OWN TELESCOPE INDEX
   - HOME TELESCOPE CONSTRUCTION
   - BYOT FOR SCHOOLS
   - TELESCOPE ACHROMATIC LENSES
  
- T & A MADE TELESCOPES

- CLASSIFIEDS
   - TELESCOPES
   - SPOTTING SCOPES
   - NIGHT VISION
   - MICROSCOPES
   - SECONDHAND
   - TELESCOPE PARTS & ACCESSORIES
   - BOOKS/REFERENCES
   - GLOSSARY
  
- TELESCOPES & ASTRONOMY SERVICES
- "WHAT'S NEW?"
- VIXEN OPTICAL PAGES
- ONLINE STORE
- TELESCOPES AND ASTRONOMY LINKS

ASTRONOMY INFORMATION

- ASTRONOMY
- USING BINOCULARS FOR THE NIGHT SKY
- LOCAL & INTERNATIONAL EVENTS
- VENUS TRANSITS THE SUN 8TH JUNE 2004
- TOTAL SOLAR ECLIPSE 2002
- AUSTRALIA HAS THE BEST SKIES
- COSMOLOGY
- TELESCOPES AND ASTRONOMY LINKS

ASTRONOMY PRODUCT INFORMATION

- POSTERS & CHARTS
- TELESCOPES AND ASTRONOMY LINKS


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