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GSO 1.25" Neutral Density / Moon Filter ND96-0.9 13% Transmission

4.9 (31 Reviews) Read Reviews Write Review
Brand GSO
Part Number AD085
Availability available

Product Info

Manufacturer Description

Neutral density filters are excellent filters to reduce the overall brightness of an image to cut down glare while viewing bright astronomical objects through a telescope. They are useful for splitting binary systems, comfortably observing the moon, or stacking with other planetary filters. ND filters retain true color balance of the objects being observed since all wavelengths are transmitted uniformly over the entire spectrum.

This ND96 neutral density filter allows 13% of the visible light to pass through. It has a standard 1.25" male filter thread (M28.5x0.6) so it can be screwed on to virtually any astronomy eyepiece or accessory that has 1.25" filter threads. Also features a standard 1.25" female filter thread on the other side, so it can be stacked with additional filters. Comes in a protective plastic storage box. Made in Taiwan.

Reviews

4.9 (Based on 31 Reviews) 100% of reviewers recommended this product.
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    1. Guest

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      Review by John B.
      1545677964
      Dec 24, 2018

      5.0 GSO mono filter

      Pros:

      Cons:

      Comments:

      I was impressed with the build quality and the reasonable price, fast shipping and great overall shopping experiance but cant coment on how will it works' I gave it as a gift.

      Bottom Line: Would you recommend this item? Yes
      Was this review helpful? Yes / No

      This review was provided courtesy of AgenaAstro.com

    2. Guest

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      Review by Greg W.
      1518408064
      Feb 11, 2018

      5.0 Definitely works

      Pros:

      Cons:

      Comments:

      Makes moon less bright and more pleasant to look at.

      Bottom Line: Would you recommend this item? Yes
      Was this review helpful? Yes / No

      This review was provided courtesy of AgenaAstro.com

    3. Guest

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      Review by Vasilios M.
      1516525648
      Jan 21, 2018

      5.0 quality product

      Pros:

      Cons:

      Comments:

      nice filter, moon observation is more comfortable with my 8se.

      Bottom Line: Would you recommend this item? Yes
      Was this review helpful? Yes / No

      This review was provided courtesy of AgenaAstro.com

    4. Guest

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      Review by Cahit Ü.
      1513588853
      Dec 18, 2017

      5.0 I like GSO products

      Pros:

      Cons:

      Comments:

      Low coast and excellent quality filter. This filter gives me the contrast I want. Full moon observations have become more comfortable.

      Bottom Line: Would you recommend this item? Yes
      Was this review helpful? Yes / No

      This review was provided courtesy of AgenaAstro.com

    5. Guest

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      Review by Jim C.
      1512448522
      Dec 4, 2017

      4.0 GOOD SOLID FILTER

      Pros:

      Cons:

      Comments:

      THIS IS MUCH BETTER THAT THE CHEAP PLASTIC ONE FROM AMAZON. THIS IS METAL AND GOOD GLASS FILTER THAT DIMS THE MOON 13% SO I CAN TAKE PHOTOS.

      Bottom Line: Would you recommend this item? Yes
      Was this review helpful? Yes / No

      This review was provided courtesy of AgenaAstro.com

    6. Guest

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      Review by Jim B.
      1484994504
      Jan 21, 2017

      5.0 Another fine filter from GSO

      Pros:

      Cons:

      Comments:

      I've bought several of the GSO filters from Agena, and they all seem to work very well. I use this filter with my #80 GSO blue filter and both filters work great when observing the moon. I'm just a beginner in astronomy... but these filters seem to help me in my observations...

      Bottom Line: Would you recommend this item? Yes
      Was this review helpful? Yes / No

      This review was provided courtesy of AgenaAstro.com

    7. Guest

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      Review by Amanda J.
      1484564087
      Jan 16, 2017

      5.0 25 % moon filter

      Pros:

      Cons:

      Comments:

      Works as expected and is stackable which is nice.

      Bottom Line: Would you recommend this item? Yes
      Was this review helpful? Yes / No

      This review was provided courtesy of AgenaAstro.com

    8. Guest

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      Review by Kin E.
      1483024434
      Dec 29, 2016

      5.0 Good quality at a good price

      Pros:

      Cons:

      Comments:

      This filter is of much better quality than the one that I bought before. The filter is of neutral color and mounted on a metal rim. I used it on my 8" f/10 Schmidt Cassegrain at 100x to look at a half moon and was amazed at the details that I could see. However, when looking at the full moon, I still found it a little too bright even with the filter installed.

      Bottom Line: Would you recommend this item? Yes
      Was this review helpful? Yes / No

      This review was provided courtesy of AgenaAstro.com

    9. Guest

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      Review by Mahmoud Adel of Egypt, Giza.
      1444521600
      Oct 10, 2015

      5.0 Very good

      Pros:

      Cons:

      Comments:

      Very good

      Bottom Line: Would you recommend this item? Yes
      Was this review helpful? Yes / No

      This review was provided courtesy of AgenaAstro.com

    10. Guest

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      Review by Rich of New Jersey.
      1444435200
      Oct 9, 2015

      5.0 Excellent ... I like it while recording the moon .

      Pros:

      Quality Lenses

      Cons:

      Comments:

      I would never though it was so good and useful.

      Bottom Line: Would you recommend this item? Yes
      Was this review helpful? Yes / No

      This review was provided courtesy of AgenaAstro.com

    11. Guest

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      Review by Mic of Davis, CA.
      1444176000
      Oct 6, 2015

      5.0 Good bang for the buck

      Pros:

      Quality,Value

      Cons:

      Comments:

      Used for solar viewing with a TV85, Lunt wedge, and a single polarizer. Very good value.

      Bottom Line: Would you recommend this item? Yes
      Was this review helpful? Yes / No

      This review was provided courtesy of AgenaAstro.com

    12. Guest

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      Review by Dean of Manila Philippines.
      1436659200
      Jul 11, 2015

      5.0 Quality product

      Pros:

      Easy to Use,Strong Construction,Accurate,Quality Lenses

      Cons:

      Comments:

      First impression when I opened the box is "WOW" this thing looks better physically. The item is well protected on its casing and very clean. Materials and workmanship is great.

      Bottom Line: Would you recommend this item? Yes
      Was this review helpful? Yes / No

      This review was provided courtesy of AgenaAstro.com

    13. Gunsmokeray

      Gunsmokeray New Member

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      Review by gunsmokeray of Northwest Louisiana.
      1427500800
      Mar 27, 2015

      5.0 Well made, performs as listed.

      Pros:

      Quality Lenses,Strong Construction

      Cons:

      Comments:

      This is a well made little filter.

      Bottom Line: Would you recommend this item? Yes
      Was this review helpful? Yes / No

      This review was provided courtesy of AgenaAstro.com

    14. Gunsmokeray

      Gunsmokeray New Member

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      Review by gunsmokeray of Northwest Louisiana.
      1427500800
      Mar 27, 2015

      5.0 Well made, performs as listed.

      Pros:

      Lightweight,Strong Construction,Accurate,Quality Lenses,Easy to Use

      Cons:

      Comments:

      This is a good little filter for lunar observation.

      Bottom Line: Would you recommend this item? Yes
      Was this review helpful? Yes / No

      This review was provided courtesy of AgenaAstro.com

    15. Guest

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      Review by John of Tucson, AZ.
      1422748800
      Jan 31, 2015

      5.0 Great filter

      Pros:

      Quality Lenses,Compact,Accurate,Strong Construction,Lightweight

      Cons:

      Comments:

      Filter is as described per ad.

      Bottom Line: Would you recommend this item? Yes
      Was this review helpful? Yes / No

      This review was provided courtesy of AgenaAstro.com

    16. Guest

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      Review by Motorradmike of SW Florida.
      1410220800
      Sep 8, 2014

      5.0 Filter fits the bill

      Pros:

      Easy to Use,Accurate

      Cons:

      Comments:

      The filter arrived very quickly and I was not disappointed in the quality. Just the ticket for bright objects like the moon.

      Bottom Line: Would you recommend this item? Yes
      Was this review helpful? Yes / No

      This review was provided courtesy of AgenaAstro.com

    17. Guest

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      Review by CathyK of Elizabethville, PA.
      1391904000
      Feb 8, 2014

      5.0 Now I have a complete set!

      Pros:

      Lightweight,Accurate,Easy to Use,Compact,Quality Lenses,Strong Construction

      Cons:

      Comments:

      Now I have a complete set of ND Filters. I got the GSO 25% and 50% ND Filters to add to my 13% ND Filter to make a complete set of ND Filters. These will come in handy when I am observing the Moon.
      I like the quality and price of the GSO ND Filters!

      Bottom Line: Would you recommend this item? Yes
      Was this review helpful? Yes / No

      This review was provided courtesy of AgenaAstro.com

    18. Guest

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      Review by john b. of Dickinson, TX.
      1386374400
      Dec 6, 2013

      4.0 Works like I expected

      Pros:

      Lightweight,Quality Lenses,Compact,Easy to Use

      Cons:

      Comments:

      Fits all lenses, easy to use

      Bottom Line: Would you recommend this item? Yes
      Was this review helpful? Yes / No

      This review was provided courtesy of AgenaAstro.com

    19. Guest

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      Review by Atom B of Phoenix, AZ.
      1380326400
      Sep 27, 2013

      5.0 Now I have two

      Pros:

      Cons:

      Comments:

      The quality of these GSO filters versus the price makes them an outstanding value. Now I have the 25% and 50% transmission versions, which are not that widely available elsewhere. The typical 13% transmission version is too much for my 5" refractor.

      Bottom Line: Would you recommend this item? Yes
      Was this review helpful? Yes / No

      This review was provided courtesy of AgenaAstro.com

    20. Guest

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      Review by CW of Texas.
      1335744000
      Apr 29, 2012

      4.0 Ordered a 2nd one

      Pros:

      Quality Lenses

      Cons:

      Comments:

      Liked the 25% one so much that I ordered the 13% for when the moon is closer to full.

      Bottom Line: Would you recommend this item? Yes
      Was this review helpful? Yes / No

      This review was provided courtesy of AgenaAstro.com

    21. rmscott59

      rmscott59 New Member

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      Review by Mark of San Francisco, CA.
      1332028800
      Mar 17, 2012

      5.0 EXCELLENT FILTER

      Pros:

      Strong Construction,Quality Lenses

      Cons:

      Comments:

      A MUST for extended obsevation of the Moon. Boosts contrast and detail, reduces brightness and glare.

      Bottom Line: Would you recommend this item? Yes
      Was this review helpful? Yes / No

      This review was provided courtesy of AgenaAstro.com

    22. Guest

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      Review by c0r0nel of Mendoza, Argentina.
      1319846400
      Oct 28, 2011

      4.0 Excellent filter for lunar observation

      Pros:

      Strong Construction,Quality Lenses

      Cons:

      Comments:

      This filter is just great for make a comfortable lunar observation, reducing the brightness but without loosing detalins and contrast.

      Bottom Line: Would you recommend this item? Yes
      Was this review helpful? Yes / No

      This review was provided courtesy of AgenaAstro.com

    23. Guest

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      Review by Chris of Fort Worth, Texas.
      1272672000
      Apr 30, 2010

      5.0 Glad I Got It

      Pros:

      Strong Construction,Quality Lenses,Compact

      Cons:

      Comments:

      If you've ever looked at the full moon with a telescope using low power, you don't need a review on lunar filters to tell you that doing so will leave you nearly blind in that eye for a while.

      I ordered both the 25% and 13% light transmission filters and am glad I did. Sometimes one works best, sometimes the other. They are compact, sturdy, and of very good quality.

      Having one now, I don't see how I ever got along w/o it. If you don't already have one, I definitely recommend getting it. It makes all the difference in comfortable viewing.

      If you're going to get only one filter, I would go with 13% light transmission.

      Bottom Line: Would you recommend this item? Yes
      Was this review helpful? Yes / No

      This review was provided courtesy of AgenaAstro.com

    24. Guest

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      Review by Captain Coupon of Taylor, PA.
      1265932800
      Feb 11, 2010

      5.0 Excellent ND Filter at a great price

      Pros:

      Quality Lenses,Accurate,Compact,Strong Construction

      Cons:

      Comments:

      Excellent ND Filter for all moon phases at 25%. Can also be used for Saturn & Jupiter to cut slight glare in large scopes for more detail

      Bottom Line: Would you recommend this item? Yes
      Was this review helpful? Yes / No

      This review was provided courtesy of AgenaAstro.com

    25. Guest

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      Review by Dave of Chicago, IL.
      1265932800
      Feb 11, 2010

      5.0 Great filter!

      Pros:

      Cons:

      Comments:

      Great filter - cuts down the glare of the Moon and bright planets in all my telescopes. Works wonderfully - couldn't ask for anything better.

      Bottom Line: Would you recommend this item? Yes
      Was this review helpful? Yes / No

      This review was provided courtesy of AgenaAstro.com

    26. zanti-misfit

      zanti-misfit New Member

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      Review by zanti-misfit of Enterprise, AL.
      1257724800
      Nov 8, 2009

      5.0 A quality filter.

      Pros:

      Strong Construction,Compact,Accurate,Quality Lenses

      Cons:

      None

      Comments:

      I wanted a good moon filter period. GSO delivers with this very high quality product. The glass is flawless, the threading is superb, and the views of the moon are so much better.

      When I first started getting into astronomy I didn't think a moon filter was anything I'd be needing...but it didn't take too many viewing sessions to realize just how wrong I was. The improvement you will see when using this filter when viewing the moon is pleasing to say the least. Buy with confidence from Agena, they will serve you well. :)

      Bottom Line: Would you recommend this item? Yes
      Was this review helpful? Yes / No

      This review was provided courtesy of AgenaAstro.com

    27. zanti-misfit

      zanti-misfit New Member

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      1252013100
      Sep 3, 2009

      5.0 Cool "shades" for your eyepieces..

      Pros:

      Well made filter, stackable, cheap

      Cons:

      none

      Comments:

      I own the 13% version of this filter, using it with my Xt8 Dob. I can gather quite a bit of light with that scope and when I'm in the mood to do some lunar scoping a filter like this is a must.

      GSO has some quality stuff folks, and this filter works like a charm. The threading is well made and I had no problem using this with any of my lenses. You can also stack this filter with others and it worked great. I like to blend colors together with it sometimes.

      Oh, and its VERY affordable. I plan to get the others in this set as well. Recommended!

      Bottom Line: Would you recommend this item? Yes
      Was this review helpful? Yes / No
    28. twinkle

      twinkle New Member

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      Review by Always learning :) of Florida.
      1243382400
      May 26, 2009

      5.0 Great for viewing the moon

      Pros:

      Quality Lenses,Strong Construction,Accurate

      Cons:

      None

      Comments:

      I bought two 25% filters to use on my binocular telescope for viewing the moon. They are like a pair of sunglasses and help make observing the moon more enjoyable when it's more than 1st quarter. They reduce glare and chromatic aberration without interfering with detail. I'm happy to have them. They are very affordable and the vendor is a great communicator.

      Bottom Line: Would you recommend this item? Yes
      Was this review helpful? Yes / No

      This review was provided courtesy of AgenaAstro.com

    29. Guest

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      Review by Beastenstein of Durham, NC.
      1243382400
      May 26, 2009

      5.0 Nice Accessory for Lunar Observing

      Pros:

      Inexpensive,Nice images

      Cons:

      Comments:

      For years I have used a variable polarizing filter for lunar observing. While it has the advantage of being able to continuously change the transmittance, the images often seemed a little soft to me. After reading that fixed transmittance, neutral density filters provide better image quality, I ordered the GSO 13% transmittance filter from Agena and I am highly satisfied with it. There is a definite improvement in image sharpness over the variable polarizer - to the point that the variable unit has now been totally replaced by the new filter. I now plan to purchase the 25% transmittance filter to complement the 13% unit that has worked so well for me. Very inexpensive also. Highly recommended.

      Bottom Line: Would you recommend this item? Yes
      Was this review helpful? Yes / No

      This review was provided courtesy of AgenaAstro.com

    30. Guest

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      Review by mhuston6 of Florida.
      1243036800
      May 22, 2009

      5.0 GSO Neutral Density Filters - 1.25"

      Pros:

      Work great

      Cons:

      None

      Comments:

      I don't own the 50% filter, but I own the 25% & 13%. Both work great on the planets and bright stars! Really a must have with your filter collection!! Without these two filters you just can't get the best views!! I really can't see what the 50% would be good for but I will most likely buy it anyway since I own the other two! :-)

      Bottom Line: Would you recommend this item? Yes
      Was this review helpful? Yes / No

      This review was provided courtesy of AgenaAstro.com

    31. mhuston6

      mhuston6 New Member

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      1180602360
      May 31, 2007

      5.0 GSO Neutral Density Filters - 1.25"

      Pros:

      Both 25% and 13% work great

      Cons:

      No bad reports from me!

      Comments:

      I don't own the 50% filter, but I own the 25% & 13%. Both work great on the planets and bright stars! Really a must have with your filter collection!! Without these two filters you just can't get the best views!! I really can't see what the 50% would be good for but I will most likely buy it anyway since i own the other two! :-)

      Bottom Line: Would you recommend this item? Yes
      Was this review helpful? Yes / No
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