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SV139 1.25" ND Neutral Density Moon Filter Kit for Reduce Overall Brightness
The 1.25" Neutral Density Moon filter reduces glare so you can see more lunar detail and surface features with your telescope.
1.25" ND4 Neutral Density Filter
As the Moon moves around the Earth, we get to see more and more of the illuminated half, and we say the Moon is waxing. At first we get a sliver of it, which grows as days go by. This phase is called the crescent moon. It's very good effectto use the ND4 filter at this time.
1.25" ND8 Neutral Density Filter
Three weeks after new, we again can see half of the illuminated part. This is usually called last quarter. Quarter Moon - A week after the new moon, when Moon has completed about a quarter of its turn around the Earth, we can see half of the illuminated part. It's good effect to use the ND8 filter.
1.25" ND16 Nutral Density Filter
From now on, until it becomes new again, the illuminated part of the Moon that we can see decreases, and we say it's waning. The first week after full, it is called waning gibbous. It's very good effect to use the ND16 filter at this time.
1.25" ND1000 Nutral Density Filter
Two weeks after the new moon, the moon is now halfway through its revolution, and now the illuminated half coincides with the one facing the Earth, so that we can see a full disk: we have a full moon. It's very good effect to use the ND1000 filter at this time.
Package Includes: 1×1.25" ND4 Filter, 1×1.25" ND8 Filter, 1×1.25" ND16 Filter, 1×1.25" ND1000 Filter, 4×Sturdy Plastic Case
SV139 1.25" ND Moon Filter Kit
Barrel diameter: 1.25''
Metal filter cell threads directly into the 1.25 inch barrel of your telescope eyepiece. Useful for different caliber astronomical telescopes through which the light of the Moon can be extremely overwhelming.
Intimate product packaging protection design.
Protects ND filters during shipping or during storage; no need to worry about falling ND filters.
Woodrum69
Reviewed in the United States on May 17, 2024
Needed these so much works great for different phases of the moon SvBONY never disappoint's !
William
Reviewed in the United States on February 10, 2024
I do backyard solar observing with a Herschel wedge that requires an ND filter. These work as advertised and are more economical as a bundle than individually. Now I leave the filters on the eyepieces without the need to swap between them. Time will tell about the sturdiness of these filters, but so far all of my Svbony filters are holding up just fine.
Spritle
Reviewed in the United States on October 19, 2024
These filters are nice. They are optical quality glass and the glass is actually tinted instead of having a tinted film applied to it. The reason for the 3 stars is that they don't easily stack. You have to take out the lens retaining ring and then screw in the other filter. This presents the opportunity to break the glass lens because it can fall out of the filter frame while you are either trying to either remove a stacked filter or screw back in the filter's retaining ring. I wish that they would have made the front of the filter frame deeper so that you could stack filters without having to remove the lens retaining ring.
Zachary Stotz
Reviewed in the United States on June 13, 2023
Items came damaged and scratched.Unusable.
Matt
Reviewed in the United States on May 17, 2023
These filters do the job and for the average person work great.
JG
Reviewed in Mexico on February 12, 2023
Bastante útil para observación y fotografía lunar (y terrestre), permite visualizar en las diferentes fases sin inconvenientes de cansancio por la luz excesiva.
Dimas E Arias
Reviewed in the United States on August 21, 2022
Permite ver con claridad según el filtro seleccionado y no distorsiona los colores
Bradley Moore
Reviewed in the United States on June 6, 2022
As the moon went from full to complete eclipse, I was able to switch filters to keep my exposures correct.
dato
Reviewed in the United States on June 1, 2022
very nice items for nice price
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