Orion starBlast 4.5 EQ Instruction Manual
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Orion starBlast 4.5 EQ Instruction Manual

Equatorial newtonian reflector telescope
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instruction Manual
orion
®
starBlast
4.5 EQ
™
#9798 Equatorial Newtonian Reflector Telescope
customer support (800)‑676‑1343
E‑mail: support@telescope.com
Corporate Offices (831)‑763‑7000
89 Hangar Way, Watsonville, CA 95076
Providing Exceptional Consumer Optical Products Since 1975
IN 260 Rev. B 01/09

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  • Page 1 Manual orion ® starBlast 4.5 EQ ™ #9798 Equatorial Newtonian Reflector Telescope customer support (800)‑676‑1343 E‑mail: support@telescope.com Corporate Offices (831)‑763‑7000 89 Hangar Way, Watsonville, CA 95076 Providing Exceptional Consumer Optical Products Since 1975 IN 260 Rev. B 01/09...
  • Page 2 Declination setting circle Right ascension setting circle Counterweight lock knob Counterweight Counterweight shaft Accessory tray bracket Leg lock knob Figure 1a. The StarBlast 4.5 EQ Right ascension lock knob Right ascension setting circle Latitude scale Latitude lock T-bolt Latitude adjustment T-bolt Figure 1b.

  • Page 3: Table Of Contents

    Orion telescope.Your new StarBlast 4.5 EQ is a terrific starter instrument for exploring the exotic wonders of the night sky. Designed to be compact and easy to use, it will provide many hours of enjoyment for the whole family.

  • Page 4: Balancing The Telescope

    T-bolt Your StarBlast 4.5 EQ is now fully assembled and should resem- ble Figure 1a. Leave the dust cover on the front of the optical tube when it is not in use.

  • Page 5: Focusing The Telescope

    (c) With the Dec. lock knob released, loosen the tube ring lock clamps a few turns and slide the telescope forward or back in the tube rings. (d) When the tube is balanced about the Dec. axis, it will not move when you let go.

  • Page 6: Setting Up And Using The Equatorial Mount

    When the red dot is centered on the distant object, check to make sure the object is still centered in the telescope’s field of view. If not, re-center it and adjust the reflex sight’s alignment again. When the object is centered in the eyepiece and on the reflex sight’s red dot,...

  • Page 7: Polar Alignment

    Big Dipper. Go about five times the distance between those stars and you'll reach Polaris, which lies within 1° of the north celestial pole (NCP). to polar align the starBlast 4.5 EQ: 1. Level the equatorial mount by adjusting the length of the three tripod legs.
  • Page 8 Dec. setting circle are positive, while when the telescope is pointed south of the celestial equator, values of the Dec. setting circle are negative. So, the coordinates for the Orion Nebula listed in a star atlas will look like this: R.A. 5h 35.4m Dec. -5° 27’...

  • Page 9: Collimating The Optics

    Figure 8. This illustration show the telescope pointed in the four cardinal directions (a) north (b) south (c) east (d) west. Note that the tripod and mount have not been moved; only the telescope tube has been moved in the R.A. and Dec. axes.

  • Page 10: Aligning The Secondary Mirror

    Primary Mirror center Mark Your StarBlast 4.5 EQ comes with a collimating cap. This is a simple cap that fits on the focuser drawtube like a dust cap, but has a hole in the center and a silver bottom. This helps center your eye so collimating is easy to perform.

  • Page 11: Aligning The Primary Mirror

    When it is dark, point the telescope at a bright star and accu- rately center it in the eyepiece’s field of view. Slowly de-focus the image with the focus knob. If the telescope’s optics are correctly aligned, the expanding disk should be a perfect circle (Figure 14).

  • Page 12: Cooling The Telescope

    Magnification is calculated as follows: Telescope Focal Length (mm) Eyepiece Focal Length (mm) For example, the StarBlast 4.5 EQ has a focal length of 450mm, which when used with the supplied 15mm eyepiece yields: 450 mm = 30x...

  • Page 13: Care And Maintenance

    You can change your nighttime telescope into a daytime Sun viewer by installing an optional full-aperture solar filter over the front opening of the StarBlast 4.5 EQ. The primary attraction is sunspots, which change shape, appearance, and location daily. Sunspots are directly related to magnetic activity in the Sun.

  • Page 14: Specifications

    Warranty This Orion StarBlast 4.5 EQ is warranted against defects in materials or workmanship for a period of one year from the date of purchase. This warranty is for the benefit of the original retail purchaser only.

This manual is also suitable for:

Starblast 4.5 eq 97989798

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