Orion Stargazer 5590 Quick Start Manual

Deluxe Stargazer's 7
Piece Filter Set
#5590
Your new Orion Stargazer's 7-piece filter set will add versatil-
ity and viewing pleasure to your astronomy experience. This
set contains a variable polarizing filter, a SkyGlow Broadband
light-pollution filter, four color filters, and a plastic storage case.
Please read these instructions thoroughly for proper use and
care of the filters.
1. Attaching the Filters
Filters require a 1.25" telescope eyepiece that can accept thread-
ed filters. Any Orion 1.25" eyepiece will work. Simply thread the
filter into the eyepiece barrel until it is finger tight. You can "stack"
filters by threading another filter into the bottom of the first. Use
the filters photographically by threading them into eyepieces used
in tele-extenders and universal camera adapters. Some camer-
as adapters and barlow lenses also have the proper threads to
accept filters directly.
2. SkyGlow Broadband Light-Pollution Filter
The SkyGlow Broadband filter is useful in areas of moderate light
pollution like nearby streetlights. It blocks the most common unde-
sirable light pollution, while passing other desirable wavelengths
such as Hydrogen Alpha, Hydrogen Beta, and Doubly Ionized
Oxygen. It is designed for both visual and photographic use.
The Importance of Dark Adaptation
Allowing your eyes to dark-adapt is the key to getting the most
from your SkyGlow filter. Allow your eyes to dark-adapt for about
20-30 minutes before you use the filter. Remember, the instant
you glance at a bright object like a street lamp or bright flash-
light bulb, your eyes lose their dark-adaptation. You have to wait
another 20-30 minutes for it to return. Locate your telescope away
from direct illumination by streetlights. Set up in the "shadows" of
buildings and other objects.
What You Will See
The SkyGlow filter improves the contrast between sky and object
but will not actually make the object brighter. Expect a very dark
sky background and a somewhat dimmer but higher-contrast
image. The filter performs best on emission and planetary nebu-
las like the Orion and Owl nebulas in winter, and the Lagoon and
Dumbell nebulas in summer. Try these objects for your first uses
of the filter. The SkyGlow filter has considerably less effect on gal-
axies and stars.
A N E M P L O Y E E - O W N E D C O M P A N Y
Copyright © 2021 Orion Telescopes & Binoculars. All Rights Reserved. No part of this product instruction or any of its contents
may be reproduced, copied, modified or adapted, without the prior written consent of Orion Telescopes & Binoculars.
3. Variable Polarizing Filter
The variable polarizing filter reduces the amount of light entering
your eyepiece from your telescope. You can dim the view when
observing a bright object, such as the Moon or a planet (transmis-
sion: 40% to 1%). The variable polarizing Filter will not change the
color of the object being viewed and will prevent eye fatigue and
loss of night vision.
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