ZWO Narrowband SII 7nm 36mm Filter
Best specialized filter for advanced deep sky astrophotography.
This filter isolates the 672 nm wavelength of Sulfur, a key component in nebulae. By reducing the transmission of specific light wavelengths, it minimizes interference from artificial light sources and natural skyglow. It is fine-optically polished to achieve 1/4 wave accuracy and features multiple layers of anti-reflection coatings for enhanced performance. It is designed to minimize vignetting and color casts, making it a valuable tool for capturing detailed deep-sky objects and creating stunning tricolor images.
$175.00
More Narrowband Filter Options
ZWO 2-Inch Narrowband Filter Set - 7nm
$699.00
ZWO 1.25-inch H-alpha SII OIII 7nm Filter Set
$369.00
ZWO H-Alpha 7nm CCD Filter
$299.00
ZWO 31mm Ha 7nm Narrowband Unmounted Filter
$149.00
ZWO 7nm Narrowband SHO Filters
$380.00
ZWO 1.25" Narrowband Filter Set
$449.00
ZWO 31mm H-alpha Filter - 7nm
$149.00
Owner Satisfaction
4.6
/ 5
Category Rank
1569
/ 2593
#1569 in Telescope Accessories
Price vs Category Average
-74%
Below average
Bandpass
7
/ nm
Who it's for
- Astrophotographers in light-polluted areas seeking clear nebula images.
- Deep-sky imagers focused on capturing specific nebulae details.
- Advanced astrophotographers building a comprehensive narrowband filter set.
Who should skip it
- Casual observers or those with limited imaging session time.
- Beginners expecting immediate full-color images from a single filter.
- Astrophotographers wanting a versatile filter for all deep-sky objects.
Key Specs
Bandpass
7nm
Filter Type
SII
Shape
Round
Size
36mm
Transmission
90%
Thickness
2mm
Mounting
Drop-In
Warranty
2 Years
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