Optolong H-beta Filter - 1.25" Mounted
Optolong
Optolong H-Beta 1.25" Mounted Filter is an astronomy filter in 1.25" for cleaner astronomy data.
imaging-filter budget
Best Current Offer
Starizona
In stock
Specifications
Filter
- Filter type
- Single-line narrowband filter
- Filter size
- 1.25" / Mounted
Spectral
- Passbands
- H-beta 486.1 nm
- Band count
- 1 band
Specifications
- Thickness
- 1.85 mm
- Substrate / coating
- Non-cementing optical glass
Use
- Camera use
- Mono astronomy cameras
Astrophotography Fit
A supporting filter that should match the camera, telescope speed, and target type.
Optolong H-Beta 1.25" Mounted Filter is a budget-friendly astronomy filter (1.25").
A supporting filter that should match the camera, telescope speed, and target type.
Choose filter size around the sensor diagonal, telescope speed, and filter-wheel or drawer geometry. Flats are still required; a filter can improve contrast, but it will not rescue tilt, bad focus, or poor calibration.
Best paired with
- Cameras and filter holders with the same physical size
- Targets that match the passband
- A calibration workflow that includes flats after filter changes
Not recommended for
- Using as a fix for poor focus, tracking, or gradients
- Filter sizes smaller than the illuminated sensor path
- Targets outside the filter passband
Where To Buy
Some links on this page are affiliate links. Prices and availability are pulled automatically from each retailer and updated daily.
| Retailer | Price | Availability | View Offer |
|---|---|---|---|
| Starizona Starizona | $90.00 | In stock Updated 5/13/2026 | View Offer - $90.00 |