| Quantity | 3+ units | 10+ units | 30+ units | 50+ units | More |
|---|---|---|---|---|---|
| Price /Unit | $211.71 | $207.39 | $200.91 | $192.27 | Contact US |
Askar V Professional Astronomical Telescope 60/80mm Double Objective Lens with Reducer/Extender
$1,575.32
Mirrosky Polar Finder Equatorial Mount Calibration Device for MiniAZ Astronomical Telescope Kit
$52.15
Mirrosky MiniAZ Portable Intelligent Astronomical Telescope 53ED Guidescope Support Equatorial/Theodolite Dual Mode
$368.91
Scorpio Astro 2-inch SII Filter Astronomical 3nm Ultra Narrow Band Telescope Filter with Lens Frame
How to choose:
- 3nm SHO: Especially in the case of strong light pollution, or for the resolution of the finest detail the narrower 3nm ultra-Narrowband filter is the better choice (F4.8-F16).
- 5nm SHO: If you plan to use the filter on several telescopes with different focal ratios (F4-F16) and want a good signal-to-noise ratio, the wider 5nm Narrowband filter is useful.
Description:
- It is an ultra narrowband filter designed for deep space photography with mono cameras.
Features:
- No halo design, maximizing the elimination of halo effects on imaging.
- SHO LRGB parfocal, high efficient shooting, reduces frequent focusing.
- Peak transmittance of 90%, higher shooting efficiency and image contrast.
- High cut-off depth, with an average of OD4.5.
- Edge extinction, chamfering, further reducing stray light.
- Ion beam hard coating, with a harder surface, easy to clean and less prone to scratches.
- Professional design to prevent urban light pollution.
- Glass thickness of 2mm ± 0.1mm.
- Frame thread M48*0.75, with frame of 5mm+, thread of 2.5mm.
- ±0.1nm precise bandwidth control
- Maximum support for F4
- Support mainstream filter wheels
Package Included:
- 1 x 2-inch SII Filter
