iOptron 8401 Chapter. 4 How to Observe, People usually use alt-zi mode to observe land objects

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People usually use alt-zi mode to observe land objects.

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People usually use alt-zi mode to observe land objects.

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People usually use optics that produce normal images (not reversed, or up-side- down images) to observe land objects.

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Use slower speed for fine tuning.

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Chapter. 4 How to Observe

4.1Observe manually

If you want to observe land objects, such as a mountain top or a bird you should use the alt-azmode. Simply point the telescope to your target and look through the eye piece. (For certain models, such as Newtonian and Maksutov-Cassagrein, the image you see in the eye piece is up-side down).

First, you need to loosen the telescope’s tripod base lock knob and Altitude lock so that the telescope can move freely in both directions. Next, use the viewfinder to locate your target; Center the target in your eyepiece and tighten the base and Altitude locks. Then adjust focus.

You can also use this method to observe celestial objects in the night sky. However, you will notice that stars drift away slowly from your eyepiece field, and you have to keep adjusting your telescope to re-center your target. This drift is caused by the rotation of the Earth. This drift can be countered by using the automatic tracking feature of GoToNovaTM.

4.2Observing using arrow keys

On our GoToNovaTM controllers there are four arrow keys. You can use these keys to adjust and fine tune your telescope. To use this function make sure you tighten both the Altitude and base locks. Then turn on the power.

With the “User position” screen press the ENTER button to switch between “Land” and “Cele” mode (upper right corner). Use the SPEED button to adjust the speed (lower right corner). Use higher speed for initial adjustment. Use lower speed for fine tuning. Center your target in your eye piece then adjust the focus.

User position

Land

R1h47.8m

D32°3.3’

A 89°58.5’

Z 179°11.8’

07-06-06 08:59:20 8X

4.3The Moon

The Moon, when visible in the night sky, is most likely the first celestial object you want to watch with your new telescope. It is also the most convenient object in the sky to test some of the GoToNovaTM functions.

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iOptron 8401 Chapter. 4 How to Observe, People usually use alt-zi mode to observe land objects, Observe manually, The Moon