Specifications - Orion starBlast 4.5 EQ Instruction Manual

clips held by two screws each. Loosen the screws and remove
the clips.
You may now remove the primary mirror from its cell. Do not
touch the surface of the mirror with your fingers. Lift the mirror
carefully by the edges. Set the mirror on a clean soft towel. Fill
a clean sink free with room temperature water, a few drops of
liquid dishwashing detergent, and if possible, a capfull of 100%
isopropyl alcohol. Submerge the mirror (aluminized face up)
in the water and let it soak for a few minutes (or hours if it's a
very dirty mirror). Wipe the mirror under water with clean cotton
balls, using extremely light pressure and stroking in straight lines
across the mirror surface. Use one ball for each wipe across
the mirror. Then rinse the mirror under a stream of lukewarm
water. Any particles on the surface can be swabbed gently with
a series of cotton balls, each used just one time. Dry the mirror
Small Phillips-head screws (3)
Figure 15.
To remove the mirror cell from the telescope, the
three small Phillips-head screws on the perimeter of the mirror cell
must be completely unthreaded.
one‑Year limited 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.
During this warranty period Orion Telescopes & Binoculars will repair or replace, at Orion's option, any
warranted instrument that proves to be defective, provided it is returned postage paid to: Orion Warranty
Repair, 89 Hangar Way, Watsonville, CA 95076. If the product is not registered, proof of purchase (such
as a copy of the original invoice) is required.
This warranty does not apply if, in Orion's judgment, the instrument has been abused, mishandled, or
modified, nor does it apply to normal wear and tear. This warranty gives you specific legal rights, and
you may also have other rights, which vary from state to state. For further warranty service information,
contact: Customer Service Department, Orion Telescopes & Binoculars, 89 Hangar Way, Watsonville, CA
95076; (800)-676-1343.
Customer Support Help Line (800)‑676‑1343 • Day or Evening
14
orion telescopes & Binoculars
89 Hangar Way, Watsonville, ca 95076
in a stream of air (a "blower bulb" works great), or remove any
stray drops of water with the corner of a paper towel. Cover the
mirror surface with tissue, and leave the mirror in a warm area
until it is completely dry before replacing it in the mirror cell and
telescope.

9. specifications

Primary mirror: 4.5" (114mm) diameter, parabolic, center
marked
Effective focal length: 450mm
Focal ratio: f/3.9
Minor axis of secondary mirror: 1.3" (34mm)
Mirror coatings: Aluminum with silocon dioxide (SiO2) overcoat
Focuser: Rack-and-pinion, accepts 1.25" eyepieces
Eyepieces: 15mm and 6mm Expanse eyepieces, fully coated
with multi-coatings, 1.25" barrel diameter, accept Orion filters
Eyepiece magnification: 30x (with 15mm eyepiece) and 75x
(with 6mm eyepiece)
Finder scope: EZ Finder II reflex sight
Mount: EQ-1, German equatorial
Tripod: Aluminum
Motor drives: Optional
Total instrument weight: 17 lbs.