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With the Moon visible in the sky, set up your telescope 
with the 20mm eyepiece installed. 

Look through the telescope’s 20mm eyepiece. 
Gently turn the focus knobs to adjust the sharpness 
of the image. 

You can view many other celestial objects, such as 
planets, star clusters and nebulae using this same 
technique if you know where to find them in the  
night sky. 

Celestron’s free SkyPortal app for iOS and Android can 
help you locate and identify a wide array of celestial 
objects quickly and easily.

The best and easiest target for you to try to view first is the Moon. Try 
observing the Moon at different points in its phase cycle. The best time 
to view the Moon is from two days after a New Moon up to a few days 
before a Full Moon. During this period, you will be able to see the most 
detail in the craters and lunar mountain ranges. 

To get a closer view of the Moon, loosen the set  
screws on the focuser and remove the 20mm eyepiece.  
Replace it with your 10mm eyepiece and tighten the 
set screws to secure it in place. The 10mm eyepiece 
will give you significantly more magnification, making 
the Moon appear much larger. 

NOTE: 

 

You may need to adjust the focus 
knobs when you change eyepieces, to 
make sure you are getting the sharpest 

 

image possible. 

Move the telescope so that it is roughly pointing 
toward the Moon. 

Turn on and look through the finderscope and locate 
the red dot. Continue moving the telescope until the 
red dot appears over the Moon.

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CONGRATULATIONS!

YOU HAVE NOW OBSERVED YOUR 

FIRST CELESTIAL OBJECT! 

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10mm

20mm

YOUR FIRST NIGHT OUT-

THE MOON

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Low Power Eyepiece

Focus Knobs

Summary of Contents for ASTROMASTER LT 70 AZ

Page 1: ... 22109 QUICK SETUP GUIDE ...

Page 2: ...l they are fully extended Extend each of the three tripod legs down 6 12 To attach the accessory tray line up notches and turn clock wise until tray tabs lock into place with the tripod brackets Next slide telescope tube into the mount Be sure to back out fastening screws to allow enough clearance for the dovetail Use the three tightening screws located at the bottom of each leg to secure the exte...

Page 3: ...ng your AstroMaster telescope Insert the diagonal into the focuser and tighten the set screws Remove the small plastic tab under the battery cover by pulling it straight out For longer battery life be sure to turn off finderscope when not in use Loosen the set screw on the diagonal then insert the chrome barrel of the 20mm eyepiece into the diagonal and tighten the set screw Remove the lens cap fr...

Page 4: ...mp Slide the phone clamp up and down and rotate it left and right until your camera is looking down through the eyepiece of the telescope Tighten the knob on the bottom of the adapter to secure it in place Use the telescope s focuser to adjust focus of your camera Snap the image using your app or use the Bluetooth remote described in the next section Open the eyepiece clamp and place it around the...

Page 5: ... app Press the button on the remote to trigger the shutter on your phone If your camera is in video mode you can press the button once to start recording and again to stop the recording 4 5 To insert or replace the battery place your thumb in the center of the back cover pressing inward and sliding downward remove the battery door The CR2032 battery should be inserted with the positive side facing...

Page 6: ...he telescope s 20 mm eyepiece YOUR FINDERSCOPE IS NOW ALIGNED It should not require realignment unless it is bumped or dropped 4 The finder is one of the most important parts of your telescope It helps you locate objects and center them in the eyepiece The first time you assemble your telescope you need to align the finder to the telescope s main optics It s best to do this during the day SOLAR WA...

Page 7: ...to a few days before a Full Moon During this period you will be able to see the most detail in the craters and lunar mountain ranges To get a closer view of the Moon loosen the set screws on the focuser and remove the 20mm eyepiece Replace it with your 10mm eyepiece and tighten the set screws to secure it in place The 10mm eyepiece will give you significantly more magnification making the Moon app...

Page 8: ... harmful interference and 2 this device must accept any interference received including interference that may cause undesired operation CAUTION Changes or modifications not expressly approved by the party responsible for compliance could void the user s authority to operate the equipment NOTE This equipment has been tested and found to comply with the limits for a Class B digital device pursuant t...

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