- Description
- Specifications
The ToupTek 1.25" Ha/OIII Dual Narrowband Filter Set pairs H-alpha and OIII filters in 1.25" format for the most popular two-filter narrowband imaging workflow. Together these two filters capture the dominant emission from most nebulae and can be combined in bicolour or HOO palette processing.
- Included: H-alpha (7nm), OIII (7nm)
- Size: 1.25" (mounted)
- Bandpass: 7nm FWHM
- Coating: Ion-beam sputtered multi-layer
| Specification | Detail |
|---|---|
| Included Filters | H-alpha (656.3nm), OIII (500.7nm) |
| Bandpass (FWHM) | 7nm each |
| Filter Size | 1.25" mounted |
| Coating | Ion-beam sputtered multi-layer |
| Out-of-Band Blocking | OD4+ |
| Cell Material | Aluminium, anodized black |
| Ideal Use | Bicolour HOO imaging; most popular two-filter narrowband combination |
You may also like
Recently viewed
Recent Blog Posts
View all
Your Guide Graph Is Lying to You
You drove ninety minutes to dark sky, PHD2 held 0.4 arcseconds all night, and half your subs still have eggs for stars. Here are the three things your
Read More
Read More
D-Size vs V-Size: A Complete Guide to Telescope Dovetail Systems
What's the difference between D-size and V-size telescope dovetails? Here's everything you need to know.
Read More
Read More
What Is Back Focus in Astrophotography? Telescope Reducers, Flatteners, and Spacing Explained
What Is Back Focus in Astrophotography? Telescope Reducers, Flatteners, and Spacing Explained
Back focus is one of those astrophotography terms that c
Read More
Read More