Telescope Basics  is a valuable resource for the person just getting started in astronomy. It answers questions about the different types of telescopes and also gives the advantages and disadvantages of each.

Telescope Basics also defines many astronomical terms and contains numerous pictures and illustrations. We think that you will find this resource rich with content, and very helpful for the person who is just beginning their journey into the field of astronomy.

Firstscope 60AZ

Price: $159.95

Specifications:
60mm (2.4") Aperture
Focal Length of 700mm
Focal Ratio of f/12
All metal Altazimuth Yolk Mount

Standard Accessories:
The Firstscope 60 AZ uses 1¼" Accessories -- 20mm MA Eyepiece (35x), 10mm MA Eyepiece (70x), 1.5x Image Erecting (Terrestrial) Eyepiece
Star Pointer Finderscope
90° 1¼" Star Diagonal
Slow Motion Control Rod for smooth vertical adjustments
The Sky® Level I Astronomy Software
Sturdy, Adjustable Aluminum Tripod with Accessory Tray
Weight: 7 Lbs.

Firstscope 60EQ

Price: $229.95

Specifications:
60mm (2.4") Aperture
Focal Length of 900mm
Focal Ratio of f/15
All metal Equatorial Mount with Setting Circles
Slow motion cable for both R.A. and DEC
Weight: 7 Lbs.

Included Accessories:
20mm MA Eyepiece - 1¼" (45x) and 10mm MA Eyepiece -- 1¼" (90x)
Sturdy, Adjustable Aluminum Tripod with 
Accessory Tray
Star Pointer Finderscope
90° 1¼" Star Diagonal
The Sky® Level I Astronomy Software
Adjustable Aluminum Tripod

Firstscope 90EQ

Price: $499.95

The equatorial mount is larger and more rugged than the one supplied with the Firstscope 60's. The tripod is also larger and more rugged than offered on the 60mm sizes or on most competitive 90mm models.

The achromatic optics are made to Celestron's exacting specifications and are quite excellent. The standard accessories for this telescope add up to a highly desirable viewing instrument that performs superbly.

This telescope works well for both terrestrial and astronomical observing

Firstscope 90EQ Specifications:

90mm Aperture
Focal Length of 900mm
Focal Ratio of f/11
Fully Multi-Coated Optics

Firstscope 90EQ Standard Accessories:

Standard 1¼" Accessories include: 20mm MA Eyepiece (45x), 10mm MA Eyepiece (90x) Focuser and 90° Diagonal
Star Pointer Finderscope
Piggyback Mount
Sturdy, Adjustable Aluminum Tripod with Accessory Tray
Weight: 24 Lbs.

Firstscope 114EQ

Price: $469.95

Standard Accessories:
Two 1¼" Eyepieces: 20mm MA Eyepiece (45x), 10mm MA Eyepiece (90x)
1¼" Focuser with .96" Adapter
Star Pointer Finderscope
Sturdy, Adjustable Aluminum Tripod with Accessory Tray

Barlow Lenses

2x Barlow Lens Deluxe - 1¼" 
Price: $99.95

2x Barlow Lens Ultima® - 1¼"
Price: $169.95

If you’re looking for an affordable way to achieve high-power viewing of the moon and planets, double stars and even close-up views of terrestrial subjects, a Barlow lens is the answer.
Barlow lenses mount into either your telescope’s focuser or visual back.
The .96" Economy model is a good choice when you want to expand your power ranges at a very economical price.
Celestron’s premium quality 1¼" achromatic Barlow lenses (#93507) are compact and lightweight. It is under three inches long, weighing in at 4 ounces. The clear aperture is 27mm on the 1¼" model and is multicoated (#93506).
The Ultima® Series Barlow (2x – 1¼") is an air-spaced, three element apochromatic design with a 27mm clear aperture. This lens features a very high quality, fully multicoated design. Amazingly compact and lightweight, it’s just 5 ounces and 2.75" in length.

EYEPIECES

Omni/X-cel  Plössl Eyepieces: 1-1/4"

Price: $79.95-$129.95

Celestron offers these premium eyepieces at affordable prices, yet they’re among the best designed and corrected eyepieces available. They’re multicoated for enhanced contrast and all of the 1-1/4" models are threaded to accept Celestron colored eyepiece filters.

EYEPIECES

Ultima® Eyepieces: 1-1/4"

Price: $179.95-$249.95

These are Celestron’s top of the line eyepieces, utilizing a hybrid design of five elements. They feature long eye relief and a wide field, and each air-to-glass surface is fully multicoated to enhance contrast levels. These special eyepieces are computer designed to keep visual aberrations to an absolute minimum. They virtually eliminate the following aberrations: spherical, color, field curvature, coma, astigmatism, distortion and spherical distortion of the exit pupil. The inside surfaces and edges of all lenses are blackened, to keep out reflected light. Outside surfaces are flat black, with rubber grips for secure handling. Rubber eyecups are included both for comfortable use and to keep out extraneous light. Threaded barrels accept Celestron thread-in filters. Lens and barrel caps are included for safe storage.

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