Meade Instruments Infinity 80, 90 and 102mm Refractor - Manual (Page 3)

1
INTRODUCTION
Your telescope is an excellent beginner’s
instrument, and is designed to observe
objects in the sky and also on land. It can
be your personal window on the universe or
allows you to intimately study the behavior of
nesting birds on a distant hillside.
The telescope is shipped with the following
parts:
• Optical tube
• Alt-azimuth mount with slow motion con-
trols
• Stainless Steel tripod with accessory tray
• Three 1.25” eyepieces:
MA26mm, MA9mm, MA6.3mm
• 90 degree erect-image diagonal prism
• 2X Barlow
• Red-dot viewfinder with bracket
The Infinity series of telescopes come in sev-
eral sizes (apertures) of optical tubes. The
heart of the optical tubes is the front lens. It
collects and focuses the incoming light from
distant objects.
The lens diameter is one of the most
important pieces of information about the
telescope. The size of the objective lens
determines how much detail you will be able
to see in your telescope.
Each optical tube also has a focal length
which is the distance the light travels inside
the optical tube before it comes to focus.
The focal length information is also important
and will help later on to calculate magnifica-
tion.
Setting up your telescope involves these
simple steps:
• Setting up your tripod
• Attach the accessory tray
• Attach the slow motion controls
• Attach the optical tube to the mount
• Attach the viewfinder
• Attach the diagonal prism and eyepiece
• Align the viewfinder
Study the picture on the next page and
become acquainted with the parts of your
telescope. Then proceed to “Setting up your
tripod.”