Dismiss Notice
New Cookie Policy
On May 24, 2018, we published revised versions of our Terms and Rules and Cookie Policy. Your use of AstronomyConnect.com’s services is subject to these revised terms.

View the Latest Filter Reviews

Item
Submitted By
Meade Series 4000 1.25
Meade Series 4000 1.25" ND96 Moon Filter # 07531
5.0
Meade Series 4000 1.25" ND96 Moon Filter # 07531
Cuts the full moon's glare down to a tolerable degree. Good price.
Brandon 1.25
Brandon 1.25" Color / Planetary Filter for Brandon Oculars - #30 Magenta
5.0
Superb Quality - Specialized Filter
I searched far and wide for a magenta filter, and was so pleased to see that my favorite supplier, Agena Astro, has these in stock. Convenient one-stop source for this quality product!
Optolong City Light Supression / Light Pollution Reduction CLS-CCD Filter - 1.25
Optolong City Light Supression / Light Pollution Reduction CLS-CCD Filter - 1.25"
5.0
Good product
There is no attenuation around the photographed image. Good product.
Brandon 1.25
Brandon 1.25" Color / Planetary Filter for Brandon Oculars - #85 Salmon
5.0
Useful Mars Filter
Just received this Brandon filter and very pleased to see the quality workmanship that's gone into it. Looking forward to seeing the results as visibility of the 'Red Planet' increases.
BST 2
BST 2" Variable Transmission Polarizing Filter
5.0
Powerful and Flexible Visual Tool
I particularly like separating the two polarizing layers, and threading one in the diagonal and one in the 2" EP. This makes adjustment of the polarization as simple as rotating the EP. Particularly useful for lunar viewing.
Lumicon Night Sky Hydrogen-Alpha Filter - 1.25
Lumicon Night Sky Hydrogen-Alpha Filter - 1.25" # LF3085
5.0
Excellent Deep Sky Tool
I use this H-alpha for visual astronomy, since it passes everything from H-alpha to the IR spectrum. The increased contrast resulting from blocking everything below H-alpha is a refreshing view!
Baader 2
Baader 2" Double Polarization Filter with Rotating Filter Cell # FPOL-2D 2408344
5.0
A must have
I'm using this in conjunction with the Baader white light diagonal. Makes a big difference on your viewing experience.
Optolong UV / IR Cut Filter - 1.25
Optolong UV / IR Cut Filter - 1.25"
5.0
I would recommend this product
I would recommend this product to a friend.
GSO 1.25
GSO 1.25" Moon Filter
5.0
Best Moon Filter I have Used.
The combination of a density increase and filtering out both red and blue light is working the best for me. The density increase is cutting out the extra light that tends to blind me, when the Moon is more than half full. Cutting out some of the red ...
Baader Narrowband O-III (8.5nm) CCD-Filter - 1.25
Baader Narrowband O-III (8.5nm) CCD-Filter - 1.25" # FOIIIN-1 2458435
5.0
Recommended
After purchasing a ZWO 1600mm-cool and the 8slot wheel, I was not satisfied with the ZWO filters that came with the kit. I was getting really and halo’s and other strange artifacts that I believe were caused by the stainless screws holding in those...
Celestron 1.25
Celestron 1.25" Eyepiece Filter Set # 94119-10
5.0
Great Customer Service!
I've only made one order thus far from Agena but am very impressed with their customer service and the quality of the filters!
GSO 1.25
GSO 1.25" Color / Planetary Filter - #15 Dark Yellow
5.0
Great filter! Great Price!
There's no need to waste your $$ on more expensive color/planetary filters; these GSO filters work very well. This #15 dark yellow is an excellent general purpose filter for lunar and planetary viewing in smaller refractors, as it doesn't h...
Thousand Oaks Optical Broadband Light Pollution Reduction Filter - 1.25
Thousand Oaks Optical Broadband Light Pollution Reduction Filter - 1.25" # LP-125
5.0
Light pollution filter
It's a good filter, does what it says it's supposed to do, happy with item
GSO 1.25
GSO 1.25" Polarizing Filter
4.0
As expected
Ordered two to make an adjustable moon filter. Added some PFTE thread tape to one set of threads to tighten up the fit. I'm quite happy with them.
ZWO 5-Position Electronic Filter Wheel for 1.25
ZWO 5-Position Electronic Filter Wheel for 1.25" or 31mm Filters # EFWMINI
5.0
Fast Service
Compared to any other astronomy supply company Agena is simply the fastest. Opt, Highpoint scientific, cloudbreak and Orion nothing is close. They must ship immediately upon order. I receive items by USPS next day.
Baader Premium Eyepiece Filter: Yellow, 495nm Longpass - 1.25
Baader Premium Eyepiece Filter: Yellow, 495nm Longpass - 1.25" # FCFY-1 2458301
5.0
What a pleasant surprise
Seriously - I thought they might help, but didn't expect them to be this good without being intrusive. I'm using these on a pair of generic 100 mm 45 degree binoculars. Without these filters, stars were already getting a bit bloated at 40x,...
Lumicon Color / Planetary Filter #82A Light Blue - 1.25
Lumicon Color / Planetary Filter #82A Light Blue - 1.25" # LF1075
4.0
Lumicon #82a planetary filter
Lumicon filters are great quality an offer high quality performance. The construction material and crispness of the view was really great.