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ToupTek SHO Narrowband Filter Set
Price range: £195.00 through £475.00
£5 tracked UK delivery, free on orders over £250
In stock · dispatched next working day
Usually in stock
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- UK company in Shrewsbury
- Call 01743 224 180 or WhatsApp
- Delivery
- £5 tracked UK delivery, free on orders over £250. Outside the UK, the cost is shown in your basket. Delivery
- Warranty
- Manufacturer warranty, handled by us in the UK.
- Returns
- 14 days to return unused items. Returns policy
Overview
A set of three narrowband filters, sulphur II, hydrogen-alpha and oxygen III, for imaging emission nebulae with a mono camera. Each passes one emission line and blocks almost all other light, including most light pollution and moonlight, so you can image on nights when broadband imaging is pointless.
| Filter | Centre |
|---|---|
| SII | 671.6 nm |
| Hα | 656.3 nm |
| OIII | 500.7 nm |
The 4 nm versions give more contrast around the Moon and in bright skies, and keep the SII and Hα bands, only 15 nm apart, cleanly separated. The 6.5 nm versions collect a little more signal and are more forgiving of fast optics. All are 2 mm quartz glass with over 90% transmission and OD5 blocking, and ToupTek test each filter’s spectrum before it ships.
Which size
| Size | Sensors | Filter wheels |
|---|---|---|
| 1.25″, 6.5 nm | 1″ and smaller | 8-position 1.25″ |
| 36 mm unmounted, 4 nm | APS-C and smaller | 7-position 36 mm |
| 2″, 6.5 nm or 4 nm | Full frame and smaller | 5-position 2″ |
The 1.25″ and 2″ filters are in threaded aluminium cells that screw straight into a filter wheel. ToupTek cover the filters with a two-year warranty against manufacturing faults.
Need a single Hα, SII or OIII filter rather than the set? Contact us and we’ll get one for you.
In the box
- SII, Hα and OIII filters