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

There are two different types - the

achromatic

apochromatic.

INDEX

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.

HOME PAGE

INDEX

Contact Us - telescopes@adam.com.au

Australian Residents Please Call (08) 8381 3188
International Residents Please Call 61+ 8 8381 3188
Australian Fax Orders (08) 8381 3588
International Fax Orders 61+ 8 8381 3588
VoIP 087 129 6316

Subscribe To Our Email Publication Newsletter

See Past Newsletters Here

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

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

NEW PRICING
PHILIPS ToUcam 840k
MODIFIED FOR LONG EXPOSURE
$275AUD
PHILIPS ToUcam SPC900NC
$145AUD
LONG EXPOSURE MOD. $285AUD
'AMP OFF' MODIFICATION $45AUD

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
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

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

TELRAD FINDER - $70AUD
CLICK TO SEE ACCESSORIES

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

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

- 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

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

Updated 15th March 2008

Updated 21st March 2008

Updated 26 April 2008

Updated 28 April 2008

Updated 28 April 2008

Updated 11th August 2007

Updated 3rd April 2008

Updated 22 January 2006

Updated 22 January 2006

Updated 18th August 2005

Updated 26th October 2005

Updated 18th August 2005

Updated 21st March 2008

Updated 3rd April 2008

Updated 21st March 2008

Continuously Updated - Comprehensive listing including items obsolete

Updated 21st March 2008

Updated 21st March 2008

Updated 21st March 2008

Contact Us: telescopes@adam.com.au