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Orion 9964 manual

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Table of contents for the manual

  • Page 1

    Customer Support (800 ) 676-1343 E-mail: support@telescope.com Corporate Offices (831) 763-7000 89 Hangar W ay , W atsonville, CA 95076 INSTRUCTION MANUAL Providing Exceptional Consumer Optical Products Since 1975 Orion ® StarBlast 6 Astr o T elescope #9964 IN 330 Rev . A 02/08[...]

  • Page 2

    2 W ARNING: Never look at the sun with your telescope (or even with just y our ey es) without a pr ofessionally made solar filter . Permanent ey e damage or blindness could result. Y oung c hildren should use this telescope only with adult supervision. A v oid using the type of solar filter that screws into an eyepiece. They are susceptible to crac[...]

  • Page 3

    3 the telescope determines the magnifying power . Magnification is discussed in more detail in the Using Y our T elescope section. 2 EZ Finder II reflex sight: This is a special “finder” that helps you aim the telescope and locate objects in the sky f or viewing. The EZ Finder II generates a red LED “dot” that shows where your telescope is [...]

  • Page 4

    4 then a flat washer onto each of the sock et-head cap screws. Attach one of the two tube rings (5) to the base bracket (18) with a washer-equipped screw using the included hex key (19) (Figure 3). Rotate the base brack et 180° so the remaining attachment hole is accessible . Attach the remain- ing tube ring to the base brack et with the remaining[...]

  • Page 5

    5 Altitude and Azimuth (Aiming the T elescope) The StarBlast 6 altazimuth base (9) per mits motion along two axes: altitude (up/down) and azimuth (left/r ight). See Figure 5. Moving the telescope up/down and left/r ight is the “natural” wa y people aim objects, which makes pointing the telescope intuitive and easy . Simply take hold of the na v[...]

  • Page 6

    6 skies and a br ight setting is used under light-polluted skies or in da ylight. At t he end of your obs ervin g session , be sure to tur n the power knob counterclockwise until it clicks off . When the two white dots on the EZ Finder II’ s rail and power knob are lined up , the EZ Finder II is turned off. Aligning the EZ Finder II When the EZ F[...]

  • Page 7

    7 a star is - the br ighter a star is, the lower its magnitude will be. A good star to remember for this is Megrez (mag. 3.4), which is the star in the “Big Dipper” connecting the handle to the “dipper” (Figure 8). If you cannot see Megrez, then y ou hav e f og, haze, clouds, smog, or other conditions (such as light pollution) which are hin[...]

  • Page 8

    8 T o calculate the magnification of a telescope-eyepiece com- bination, simply divide the focal length of the telescope by the f ocal length of the ey epiece. T elescope Focal Length (mm) = Magnification Eyepiece Focal Length (mm) F or example , the StarBlast 6, which has a focal length of 750mm, used in combination with the 25mm eyepiece , yields[...]

  • Page 9

    9 C. The Planets The planets don’t stay put like the stars, so to find them yo u s ho u ld re fer t o “T h is Mo n th ’ s S ky S u mm ar y ” in t he Learning Center section of our website (telescope.com). V enus , Jupiter , and Satur n are the brightest objects in the sky after the Sun and the Moon. Y our StarBlast 6 is capable of showing y[...]

  • Page 10

    10 Appendix A: Collimating (Aligning the Mirr ors) Collimating is the process of adjusting the mirrors so they are aligned with one another . Y our telescope’ s optics were aligned at the factory , and should not need much adjust - ment unless the telescope is handled roughly . Accurate mirror alignment is impor tant to ensure the peak perfor - m[...]

  • Page 11

    11 Now tighten the three small alignment screws equally to secure the secondar y mirror in that position. If the entire primar y mirror reflection is not visible in the sec- ondar y mirror, as in Figure 10c; you will need to adjust the tilt of the secondar y mirror . This is done by alternately loos- ening one of the three alignment set screws whil[...]

  • Page 12

    12 Star-T esting the T elescope When it is dark, point the telescope at a bright star and accu- rately center it in the ey epiece’ s field of view . Slowly de-focus the image with the focusing knob . If the telescope is correctly collimated, the e xpanding disk should be a perfect circle (Figure 15). If the image is unsymmetrical, the scope is ou[...]