Astronomik Dark Filter - 50mm Round Unmounted
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With this “filter” you can close an opening in filter wheels light-tight. This allows you to create dark images with cameras without their own shutter and to realize a “park” position of a filter wheel.
The Astronomik Dark-Filters fit perfectly in all filter wheels of the brands ZWO, QHY, QSI, Starlight Xpress, SBIG, Moravian and Atik.
Size of filter
Astronomik filters come in a wide range of standard sizes, both mounted and unmounted, to suit various optical setups and cameras.
This filter is a filter with a protective ring for filter wheels without screw thread. The glass thickness is 1mm, the mechanical thickness is 3mm, the diameter is 50mm. Note that Astronomik's dark filters do not come in a plastic storage case (just a plastic bag) as their other glass filters do.
Useful Resources
Filter Cell Specifications
Unlike other filter manufacturers, Astronomik mounts their round filters in unthreaded cells.
D = Filter Cell Diameter = 50 mm / 1.97 in
T = Total Filter/Cell Height = 3.5 mm / 0.14 in
S = Glass Substrate Thickness = 1 mm / 0.04 in
CA = Clear Aperture = 46.7 mm / 1.84 in
Other Information
- Country of Manufacture: Germany
With this “filter” you can close an opening in filter wheels light-tight. This allows you to create dark images with cameras without their own shutter and to realize a “park” position of a filter wheel.
The Astronomik Dark-Filters fit perfectly in all filter wheels of the brands ZWO, QHY, QSI, Starlight Xpress, SBIG, Moravian and Atik.
Size of filter
Astronomik filters come in a wide range of standard sizes, both mounted and unmounted, to suit various optical setups and cameras.
This filter is a filter with a protective ring for filter wheels without screw thread. The glass thickness is 1mm, the mechanical thickness is 3mm, the diameter is 50mm. Note that Astronomik's dark filters do not come in a plastic storage case (just a plastic bag) as their other glass filters do.
With this “filter” you can close an opening in filter wheels light-tight. This allows you to create dark images with cameras without their own shutter and to realize a “park” position of a filter wheel.
The Astronomik Dark-Filters fit perfectly in all filter wheels of the brands ZWO, QHY, QSI, Starlight Xpress, SBIG, Moravian and Atik.
Size of filter
Astronomik filters come in a wide range of standard sizes, both mounted and unmounted, to suit various optical setups and cameras.
This filter is a filter with a protective ring for filter wheels without screw thread. The glass thickness is 1mm, the mechanical thickness is 3mm, the diameter is 50mm. Note that Astronomik's dark filters do not come in a plastic storage case (just a plastic bag) as their other glass filters do.
Useful Resources
Filter Cell Specifications
Unlike other filter manufacturers, Astronomik mounts their round filters in unthreaded cells.
D = Filter Cell Diameter = 50 mm / 1.97 in
T = Total Filter/Cell Height = 3.5 mm / 0.14 in
S = Glass Substrate Thickness = 1 mm / 0.04 in
CA = Clear Aperture = 46.7 mm / 1.84 in
Other Information
- Country of Manufacture: Germany
Astronomik Dark Filter - 50mm Round Unmounted