8710 - Monture astronomique iOptron - Free user manual and instructions

USER MANUAL 8710 iOptron

Blue telescope with multiple optical components and a black base (no visible text or symbols)

80mm Refractor Telescope (#8710)

1. Description

The iOptron® 80mm refractor (R80) is a fantastic astronomy telescope that is portable enough to take anywhere. With fully multi-coated optics, the R80 reveals brighter and sharper images. The 80mm objective lens and short 400mm (f/5.0) focal length are perfect for taking in wide swaths of the heavens, making it ideal for larger deep-sky objects. You'll see spectacular star clusters, wispy nebulas, and expansive galaxies with this telescope, but it also excels at viewing objects in our solar system. Enjoy experiencing the phases of the Moon and tracking the motions of the planets with crisp views of Saturn's rings and Jupiter's moons, as well as the birds and other land objects.

iOptron R80 is a great candidate for a guidescope. It can be easily attached to a larger primary telescope tube assembly with the proper mounting rings and dovetail. The scope will accept digital SLR, small CCD camera, or a stand-alone autoguider with a proper adapter.

Lens Cover Dew Shield Telescope Main Tube Dovetail Bar Focuser Diagonal Eye Piece

Figure 1. 80mm refractor

2. Telescope Setup

The R80 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.

bar. Install the quick release plate of the ball head onto the dovetail bar and insert the quick release plate to the ball head and secure it.

Close-up of a hand holding a black rectangular electronic component with a small yellow connector (no visible text or symbols)

Blue telescope with black body and tripod stand (no visible text or symbols)

Figure 3. Mount a R80 telescope onto a camera tripod

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.

45° diagonal

Figure 4

Focus knob eyepiece

Figure 5

For terrestrial observation, such as land mark or bird viewing, you can buy an optional 45^ Erect Diagonal to have a correct image from your eyepiece.

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, a R80 telescope has a focal length of 400mm. With a 25mm eyepiece, the magnification will be

$$ 4 0 0 \mathrm{mm} \div 2 5 \mathrm{mm} = 1 6 \mathrm{X} (\text { m a g n i f i c a t i o n }) $$

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.

4. Specifications:

Product Name	Optron 80mm OTA (#8710)
Optical Design	Air-Spaced Doublet Achromatic Refractor
Optical Coatings	Fully Multi-Coated
Clear Aperture	3.15" (80mm)