MRSCRET Q91215 Telescopes Adults Astronomy Instruction Manual
- June 15, 2024
- MRSCRET
Table of Contents
Q91215 Telescopes Adults Astronomy
Instruction Manual
MAIN PARTS OF TELESCOPE
A. Eyepiece
B. Finder Scope
C. Telescope Tube
D. Objective Lens
E. Diagonal Mirror
F. Focus Knob
G. Tripod Interface
H. Compass
I. Protective Cover
J.Finder Scope Bracket| 1. Rubber Foot
2. Flip Lock Lever
3. Leg Tube
4. Accessory Tray
5. Tilt Lock Handle
6. Horizontal Axis Screw
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INTRODUCTION
- Please read this manual carefully and completely.It contains the information you need to know to obtain the best results from your telescope.
- If at any time you need assistance in assembling or operating your telescope,you may contact us by e-mail.
- All images and product description are for reference only;actual function and detail based on the real product.
CAUTION
- Do not aim your telescope at the sun,or anywhere near the sun ! Instant and irreversible damage can occur,including blindness !
- Do not let children use any telescope without adult supervision at any time.
- Avoid sudden temperature fluctuations as the moisture in the air will condense on the objective lens. Should this happen, then place the objective lens not too close to a source of heat and allow the moisture to evaporate slowly.
- Do not try and use it by aiming through a window indoor. If the window is closed, the window glass will produce reflections and distortions. If the window is open, the moving air currents of different temperatures will cause distortions.
- When mounting the parts ensure that the securing screws are not tightened too tightly. Tightening too tightly could result in damage the parts or the internal thread of the holders.
QUICK SET-UP GUIDE
- Spread the legs apart until the center leg brace is fully extended.
- Place the accessory tray on top of the center support brace, rotate the tray untill it is locked.
- Extend all the legs to their maxium length or the length you need, flip the levers to lock/unlock.
- All three legs should be the same length to provide a level platform for the telescope.
- Find the screw hole on the telescope plate, align it with the screw on top of the tripot plate.
- Fasten the screw under the tripot plate, make sure telescope is connected with the tripot tightly.
- Assemble the finder scope.
- Tighten the set screw on the finder scope.
- Remove knurled finder scopenuts from the optical tube. Place finderscope over screws as shown above. Replace knurled nuts to secure in place.
- Install diagonal mirror.
- Loosen the set screw on the focuser.
- Align the screw holes on the eyepiece tube and focuser.
- Tighten the set screw to secure in place.
- Place the eyepieces into the barrel of the diagonal as shown above. Tighten the set screw to secure in place.
- For additional magnification, place the barlow lens between the focuser and the eyepiece, and tighten all set screws.
- Remove the objective lens cover before observation.
- Make sure marking line on the diagonal mirror is aligned with the red dot.
- Rotate the eyepiece of the finder scope to adjust the focus.
- Rotate the focus wheel on the telescope tube to focus.
- Rotate the vertical axis handle to adjust the angle of the telescope tube.
- Rotate the horizontal lock to adjust the horizontal direction of the telescope tube.
- If properly assembled, telescope should appear as the picture above.
ADJUSTING THE FINDER SCOPE
- Since the telescope has a limited field of view, it can be difficult to locate a given star or planet. For this reason the telescope 1s fitted with a finder scope for orientation, which serves as a 5×24 monocular with positive view.
- Before using at night, it is advised to follow and operate below steps at the day time to make sure the finder scope is parallelled with the Telescope Tube.
- Insert the eyepiece with the lowest magnification in the eyepiece tube. Look at a still recognizable object that is not farther away than 300m. Turn the telescope with the horizontal axle, and move the vertical axle until the object is in the middle of the field of view, and then focus the image. Tighten the adjusting screw on the mount so that the telescope remains in this position.
- Now look through the finder scope. If the object seen through the telescope is not visible from the finder scope, then rotate the eyepiece of the finder scope to adjust the focus. Or release the adjusting screws and move the finder scope until the object can be seen. Now retighten the adjusting screw while ensuring that the object remains visible in the centre of the finder scope. All screws can be finally tightened as soon as the setting with the eyepiece coincides with that of the finder scope.
- Now the finder scope is surely parallelled with the Telescope Tube. When to find the Moon or farther star at night, locate it at the centre of the finder scope firstly and fix the tripod, then observe it from the lowest-power eyepiece where the target should be found at the centre of view, finally adjust the focuser to get a clear image. (For high-power eyepiece, focuser or tripod direction may need extra tiny adjustment.)
MAGNIFICATION
- The magnification (or power) of a telescope varies depends upon the eyepiece being used and the focal length of the telescope.
- Changing the eyepieces will change the magnification (or power). (See the eyepiece table below for details)
- To calculate magnification, use the following formula, in which FL = focal length:
Magnification=F L (telescope) in mm/FL(eyepiece) in mm
Focal Length| Eyepiece| Power| Power with 3x Barlow Lens|
Focal Length| Eyepiece| Power| Power with 3x Barlow Lens
---|---|---|---|---|---|---|---
400mm| 25mm| 16x| 48x| 700mm| 25mm| 28x| 84x
20mm| 20x| 60x| 20mm| 35x| 105x
17.5mm| 23x| 69x| 17.5mm| 40x| 120x
12mm| 33x| 100x| 12mm| 58x| 175x
9mm| 44.5x| 133.5x| 9mm| 77.5x| 232.5x
4mm| 100x| 300x| 4mm| 175x| 525x
500nun| 25mm| 20x| 60x| 800mm| 25mm| 32x| 96x
20mm| 25x| 75x| 20mm| 40x| 120x
17.5mm| 28.5x| 85.5x| 17.5mm| 45.5x| 136.5x
12mm| 42x| 125x| 12mm| 67x| 200x
9mm| 55.5x| 166.5x| 9mm| 89x| 267x
4mm| 125x| 375x| 4mm| 200x| 600x
600mm| 25mm| 24x| 72x| 900mm| 25mm| 36x| 108x
20mm| 30x| 90x| 20mm| 45x| 135x
17.5mm| 34x| 102x| 17.5mm| 51.5x| 154.5x
12mm| 50x| 150x| 12mm| 75x| 225x
9mm| 67x| 200x| 9mm| 100x| 300x
4mm| 150x| 450x| 4mm| 225x| 675x
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