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Orion 1.25" Mars Observation Eyepiece Filter Set
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Orion 1.25" Mars Observation Eyepiece Filter Set
$75.99
 
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  • Unique set of high-performance observational filters markedly improve views of Mars through your telescope
  • Fully-coated Mars filter increases contrast to bring out subtle detail, even in smaller telescopes.
  • Included Blue #82A filter enhances low-contrast detail and Orange #21 filter accentuates dark surface markings.
  • You'll see the polar ice cap, subtle mare shadings, and cloud activity with this thorough complement of Mars filters for telescope eyepieces
  • All filters fit threaded 1.25" eyepieces - hard plastic filter case included


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Item #  05591
Mfg Model #  05591
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You may not see little green guys with antennae, but you will resolve plenty of subtle features with this Orion Mars-optimized telescope filter set. It consists of three 1.25" glass filters in threaded aluminum cells:

  1. The custom-designed Orion Mars Observation filter enhances contrast of virtually all surface features. Dielectric coatings transmit violet/blue (< 505nm) and orange/red (> 615nm) wavelengths where detail is rich, while blocking overbearing yellow/green (515nm-615nm) wavelengths. Polar icecaps appear more sharply defined, and differences in landscape shading are nicely resolved. Polar hazes and cloud cover become visible. The filter's high transmission makes it effective even in small telescopes.
  2. The Blue #82A filter really "pops" the polar icecaps and nicely highlights polar hoods and clouds.
  3. The Orange #21 filter sharpens visibility of dark surface markings and polar regions. Surface dust storms become easily visible.
  4. Set includes 3-filter case.

Warranty

Limited Warranty against defects in materials or workmanship for one year from date of purchase. This warranty is for the benefit of the original retail purchaser only. For complete warranty details contact us at 800-676-1343.

Warning

Please note this product was not designed or intended by the manufacturer for use by a child 12 years of age or younger.

Product Support
Visit our product support section for instruction manuals and more
Specs
  • Thread size
    28.4mm
  • Filter use
    Planetary
  • Warranty
    One year
Shipping Info

Orders received by noon Pacific Time for in-stock items ship the same business day. Orders received after noon will ship the next business day. When an item is not in-stock we will ship it as soon as it becomes available. Typically in-stock items will ship first and backordered items will follow as soon as they are available. You have the option in check out to request that your order ship complete, if you'd prefer.

Reviews
Orion 1.25" Mars Observation Eyepiece Filter Set
Rating??
4.3 / 5
4.3 / 5
Open Ratings Snapshot
Rating Breakdown 3 Reviews
5 stars
2
4 stars
0
3 stars
1
2 stars
0
1 star
0
Optical Quality??
5 / 5
5 / 5
Mechanical Quality??
5 / 5
5 / 5
Fit??
5 / 5
5 / 5
Value??
5 / 5
5 / 5
1 out of 1(100%)reviewers recommend this product.
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3 The 1.25" Orion Mars Observation Eyepiece Filter Set is designed to improve views of Mars. The Mars filter increases contrast, the Blue filter highlights polar hoods and clouds, and the Orange filter sharpens visibility of dark surface markings.
Rating??
4.3 / 5
4.3 / 5
Open Ratings Snapshot
Rating Breakdown 3 Reviews
5 stars
2
4 stars
0
3 stars
1
2 stars
0
1 star
0
Optical Quality??
5 / 5
5 / 5
Mechanical Quality??
5 / 5
5 / 5
Fit??
5 / 5
5 / 5
Value??
5 / 5
5 / 5
1 out of 1(100%)reviewers recommend this product.
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Product reviews
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Ratings summary
Rating??
4.3 / 5
4.3 / 5
Open Ratings Snapshot
Rating Breakdown 3 Reviews
5 stars
2
4 stars
0
3 stars
1
2 stars
0
1 star
0
Optical Quality??
5 / 5
5 / 5
Mechanical Quality??
5 / 5
5 / 5
Fit??
5 / 5
5 / 5
Value??
5 / 5
5 / 5
1 out of 1(100%)reviewers recommend this product.
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Product ReviewsWrite A Review
Rating??
5 / 5
5 / 5
A nice addition
PostedMay 10, 2011
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MarshallS
 
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from??Rockledge, FL
Owned this product for:Over 1 year
Optical Quality??
5 / 5
5 / 5
Mechanical Quality??
5 / 5
5 / 5
Fit??
5 / 5
5 / 5
Value??
5 / 5
5 / 5
The Mars filter worked fairly well, but seemed to be a little ambitious. The Orange filter worked great during the summer of 2010 to show surface detail, and the Blue filter was also great for enhancing the polar cap. TIP: in the old days, we used a Wratten #12 or #15 yellow filter to enhance the contrast of the Moon. If you can stand looking at a minty blue moon, instead of a yellow cheese moon, the 82A filter that comes with this set is a REAL bonus. It provides great contrast, AND it has a greater light transmission, which means a brighter image, especially important to users of smaller aperture telescopes. I really like this set, and consider it an added plus to my 1.25" planetary filter collection.
Favorite viewing location:??My driveway
Favorite object to observe:??Moon, planets, and deep space objects
Yes, I recommend this product!
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Rating??
5 / 5
5 / 5
pretty good
PostedMarch 20, 2010
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Jeffro
 
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This is a good set. The blue is the best of the bunch to my eyes followed by the orange and pinkish mars filter. All offer some improvement, but for me the blue was best the polar caps and dark surface features. Stacking the blue and orange also produced a pretty good result.
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Rating??
3 / 5
3 / 5
Orion "Mars" filter disappoints. Blue, Orange OK
PostedOctober 21, 2009
Customer avatar
John B
I used a 7" f/15 refractor to test the 3 filters. Mars was small, at 7.4 arc-secs, the seeing was 7 (10 scale), transparency about 4 (6 scale). The Orange #21 and the Blue#82A were most helpful to enhance albedo and polar features. I recommend them to Mars observers without reservation. However, the new "Mars" filter was a big disappointment. It failed to enhance much of anything, and the intense pink color was really off-putting.
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