Orion 5188 instruction manual Orion Jupiter Observation Filter, Introduction, Box

i n s t r u c t i o n M a n u a l

1.25" Orion® Jupiter Observation Filter

#5188

Congratulations on your purchase of an 1.25" Orion Jupiter Observation Filter! Below we offer some quick tips on using and getting the most from your purchase.

WARNING: NOT intended for solar observation.

Introduction

Jupiter is a great target in any telescope! Jupiter is the third brightest object in the night sky, only the Moon and Venus (depending on its phase) are ever brighter. After the Sun and the Moon, Jupiter is the most detailed object to observe in the sky. (CAUTION: Observe the sun only with the proper solar filters; the Jupiter Observation Filter is NOT a solar filter by itself!!!)

Jupiter provides an interesting object to observe in any tele- scope; but like all celestial objects, the bigger the telescope, the better the view you usually have of detail on Jupiter. Binoculars can usually show you the four brightest moons of Jupiter, but with a big telescope, say 10 inches in diameter or larger, you can sometimes spot detail or shape on the moons of Jupiter during periods of truly excellent “seeing.” It usually takes a telescope of about 100 mm diameter to start seeing some of more subtle detail on Jupiter and at least an 8-inch to really start pushing the limits of what the eye alone can see on Jupiter.

So grab your telescope and take a look at Jupiter, there are amazing sights to be seen nearly every night that Jupiter is visible, and the Orion Jupiter Observation Filter will help you make the most of your observing sessions.

In the Box

Inside the shipping container you will find a foam-lined, plastic case. Inside will be the Orion Jupiter filter.

Quick Use Guide

The Orion Jupiter Observation Filter has a metal cell, the end of the cell is threaded to accept the matching threads on the inside barrel of every Orion 1.25" eyepiece. The threads match most other eyepieces as well.

To install the Orion Jupiter Observation Filter, simply remove the filter from its case and thread the filter into the bottom of a 1.25"eyepieces (also called an “ocular”). Insert the eye- piece into the telescope and focus on Jupiter.

Compared to viewing without the filter, you should notice an immediate increase in contrast of Jupiter’s main equatorial belts (there are two prominent belts, one on each side of Jupiter’s equator – they are the major features on Jupiter; they can fade or deepen in intensity with time) and Jupiter’s famous “Great Red Spot” should also be more pronounced with this filter! Note, since Jupiter rotates very rapidly (just under 10 hours!) some evenings the Great Red Spot is vis- ible and sometimes it is not. With this filter you can more easily watch the Great Red Spot move across the face of Jupiter.

Notes and Discussion

Keep the plastic case! Store the filter in the case between observing sessions in the case to keep it dust free. Dust is the enemy of contrast (the ability to discern detail) when you are trying to observe fine details on Jupiter.

Use an Orion cleaning kit (such as Orion part number 5832) or clean compressed air to keep the surface of your

Providing Exceptional Consumer Optical Products Since 1975

OrionTelescopes.com

Customer Support (800) 676-1343 • E-mail: support@telescope.com

Corporate Offices (831) 763-7000 • 89 Hangar Way, Watsonville, CA 95076

© 2011 Orion Telescopes & Binoculars

IN 438 Rev. A 12/11