iOptron N114mm OTA User manual

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114mm Newtonian Reflector Telescope
(#8734)
Instruction Manual
WARNING!
NEVER USE A TELESCOPE TO LOOK AT THE SUN!
Looking at or near the Sun will cause instant and irreversible damage to your eye.
Children should always have adult supervision while observing.

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1. Description
Figure 1. N114 Newtomian Reflector
2. Telescope Setup
The N114 telescope comes with a Vixen-type dovetail. It can be mounted onto any
telescope mount that accepts a Vixen-type dovetail. Just simply release the dovetail locking
knob on the dovetail saddle. Slide the telescope dovetail bar in and lock the dovetail locking
knob.
Lens Cover
Telescope
Main Tube
Dovetail
Bar
Focuser
Eye Piece
Red dot
Finder

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Figure 2. Install the N114 telescope onto a telescope mount
Attach the red dot finder scope to the telescope tube:
Figure 3. Install a red dot finder
First remove the two thumb nuts from the scope body. Then place the finder scope onto
the two bolts and re-attach the nuts. The finder scope should face towards the open end of the
telescope (see arrow in diagram).
Insert the diagonal into the eyepiece side of the telescope. Tighten the thumbscrews to a
firm feel only. Slide the eyepiece into the open end of the diagonal. Tighten the. Remove the
dust cover from the other end of telescope before observation.
Dovetail
lock knob
Bolts
Switch
Point toward open
end of telescope

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3. Telescope Operation
3.1. Imaging Orientation
The image orientation of in an N114 scope is inverted, as shown in the following. The
image is upside-down and reversed from left-to-right. Practice your telescope mount on the
moving directions during the day time.
Actual image
orientation as seen
with the unaided eye
Inverted image, as
viewed with the
eyepiece in
telescope
Figure 4. Image through a telescope
3.2. Selecting an Eyepiece
The magnification of a telescope is defined by the focal lengths of the telescope and the
eyepiece. A formula can be used to determine the power of each eyepiece: Telescope focal
length divided by eyepiece focal length equals magnification.
For example, an N114 telescope has a focal length of 1000mm. With a 25mm eyepiece,
the magnification will be
1000mm ÷ 25mm = 40X (magnification)
If you want more magnification, you may order higher power eyepieces. Note: a 25 mm
focal length eyepiece has a lower power than a 10 mm one. Always start with the lowest power
eyepiece for easy locating the objects.
3.3. Focusing Telescope
Practice telescope focusing during the daytime to get familiar with the scope.
(1) After selecting the desired eyepiece aim the telescope tube at a land-based target at
least 200 yards away (e.g. A telephone pole or building). Fully retract focusing tube by turning
the focus knob.
(2) While looking through selected eyepiece, slowly extend focusing tube by turning
focusing knob until object comes into focus.
3.4. Using Finder Scope
Check the LED battery on the finder. The finder uses a CR2032 Lithium button battery.
Slide a new battery into the battery compartment with “+” sign facing out. Turn on the switch on
the side of the finder. You should see a red dot on the front screen. There are two thumb screws
on the finder to adjust the red dot position on the screen. The one on the bottom is for up/down,
and the one on the side is for left/right
Aim the telescope to a distant object and center it in the eyepiece. The look through the
red dot finder and adjust two thumb screws to move the red dot pointing to the object. If the red

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dot can’t reach the alignment object in laft/right direction, adjust the finder by release two thumb
nuts shown in Figure 3.
Mow you have the red dot finder aligned to the main telescope. Use the red dot to find
the object and it should also located into your main scope.
4. Specifications:
Product Name
iOptron N114mm OTA (#8734)
Optical Design
Newtonian Reflector
Clear Aperture
114mm
Focal Length
1000mm
Focal Ratio
f/8.8
Resolving Power
1 arcsec
Limiting Visual Magnitude
12.8
Highest Useful Magnification
269
Focuser
1.25" rack-and-pinion
Eyepiece adapter
1.25 inch
Eyepiece 1
25 mm
Eyepiece 2
10mm
Weight (OTA)
4 lbs
Warranty
One year limited