Orion 5599 Manual 

The Orion Mars Filter allows you to view our second closest celes-
tial neighbor in exceptional detail. Designed to ferret out resolution 
of Martian polar regions, highland mountain ranges, and expansive 
mare  flatlands,  the Orion Mars Filter is  an invaluable tool for  any 
planetary viewer with an interest in the red planet. 
Using the Mars Filter
To use  the  Mars Filter you will need  to thread it  into  a 1.25"  eye-
piece that can accept threaded filters. Simply thread the filter into 
Orion
®
 Mars Filter 
#5599
IN 317 Rev. B 02/09
Figure 1. The Orion Mars Filter
the eyepiece barrel until it is finger tight. Although not necessarily 
recommended  for  viewing  Mars,  you  may  also  try “stacking”  mul-
tiple filters by threading another into the bottom of the first.
After  threading  a  filter  into  the  eyepiece, place  the  eyepiece  into 
your telescope’s focuser and bring it into focus. You should now be 
able to observe Martian landscape features in detail. 
The Orion Mars Filter is an excellent multi-purpose filter for viewing 
all features of Mars. Polar caps stand  out  prominently. Landscape 
features like mare and highland mountain ranges are easily sepa-
rated and resolved. Polar hazes and cloud cover become visible.  
Care and Storage
When not in use, your filter should be kept in its original foam-lined 
case. Given proper care and storage, the filter should last a lifetime. 
Should  a  filter  need  cleaning  for  any  reason,  use  the  following 
directions to clean the filter without damaging it.
 Any quality optical lens cleaning tissue and optical lens  cleaning 
fluid specifically  designed  for multi-coated optics  can  be  used  to 
clean the glass surfaces of the filter. Never use regular glass clean-
er or cleaning fluid designed for eyeglasses. 
Before  cleaning  with  fluid  and  tissue,  blow  any  loose  particles  off 
the surface with a blower bulb or compressed air. Then apply some 
cleaning fluid to a tissue, never directly on the optics. Wipe the lens 
gently in a circular motion then remove any excess fluid with a fresh 
lens tissue.  Oily fingerprints and smudges may be removed using 
this  method.  Use  caution:  rubbing  too  hard  may  scratch  the  filter 
glass. Do not remove the filter glass from its housing for cleaning
INSTRUCTION MANUAL
Customer Support (800) 676-1343
E-mail: [email protected]
Corporate Offices (831) 763-7000
89 Hangar Way, Watsonville, CA 95076
Providing Exceptional Consumer Optical Products Since 1975
One-Year Limited Warranty
This Orion Mars Filter 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.
This warranty specifically does not cover abuse, modification, mishandling, self-repair, or normal wear and tear (including mold growth).
If the product is not registered, proof of purchase (such as a copy of the original invoice) is required. 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.

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