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Why Purchase from All-Star Telescope?
Free Expert Support
Whether you are a first timer needing help with setting up or an enthusiast that can't quite make that one thing work, our expert staff are ready to support your needs. With decades of knowledge and first hand experience we've been there and we can help you through it!
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You can trust purchasing and delivery with All-Star Telescope. All of our transactions are 100% secure and Level 1 PCI DSS compliant thanks to Shopify's ShopPay platform. For additional protection, we insure 100% of the value of every shipment we make. If it get's lost during shipment, we replace it. If it gets damaged during shipment, we replace it. We make sure your product arrives exactly as you would expect it to; we promise.
We also ensure privacy protection. We never keep any of your credit card information on file and any of your personal data is stored according to our policies.
30 Day Return Policy
Buy with confidence knowing that we accept returns up to 30 days after purchase. We want you to have something you will actually use and we are confident that we keep good quality products in our store with No Junk.
Price Match Promise
Shipping around for the best price is tough, we make it easier by offering the best pricing in the market. But if you find a better price on an in-store item somewhere else we will match it!
Product Description
The Antlia H-Beta Pro narrowband filter optimizes the full width at half maximum (FWHM) to a 3nm bandpass. As the bandwidth narrows, these 3nm Pro narrowband filters enhance the contrast of emission targets by effectively reducing unwanted background signals. Designed to achieve an impressive 88% transmission at the 486.1nm line, Antlia H-Beta 3nm Pro filters provide maximum signal and well-defined nebula structures. The out-of-band blocking specification is rated at OD5 (0.001%), ensuring excellent signal-to-noise ratio (SNR) and effective cutoff rates to minimize interference from other wavelengths. These improved sharp cutoff astrophotography 3nm Pro filters are specifically engineered to reduce halos around bright stars.
The Antlia 3nm Pro series currently comprises Ha, SII, OIII, SII and H-Beta filters that capture exceptionally narrow data from four channels, enabling a greater range of combinations in post-production to meet your diverse requirements.
Main Features
- High transmittance and smallest bandwidth to maximize contrast
- Steep spectral profile minimizes halos around bright stars
- A single substrate to eliminate internal reflections
- Narrowband Objects: H-Beta Emission Nebulae
- Use in light polluted areas and dark sites
- Extend imaging time when the moon is up
- All Antlia narrowband Pro filters can be used down to f/3 with minimal loss of signal
- All Antlia Narrowband filters unmounted are edge blackened to eliminate internal reflections from stray light
- Superior optical reliability reduces post image processing
- This filter is only effective for deep sky objects that contain H-Beta emissions
Specifications
| FWHM | 3nm |
| CWL (Central Wavelength) | 486.1nm |
| Peak Transmission | 88% |
| Blocking | ≥OD5 @ 300-1100nm |
| Filter Thickness | 2mm+/-0.05mm |
Additional Articles, Videos, and Links
Astrophotography for Beginners Step 4: Shooting Deep-Sky Images
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Astrophotography for Beginners Step 3: Choosing Gear for Deep-Sky Imaging
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Astrophotography for Beginners - Start Here: Getting into Astrophotography Step by Step
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Astrophotography for Beginners Step 1: Using the Star Adventurer Tracker
By far the most economical and easiest way to capture beautiful images of the Milky Way and large deep-sky objects like the Andromeda Galaxy (shown here) is to use a star tracker. Here are steps an...
Astrophotography for Beginners Step 2: How to Shoot the Moon
Close-ups of the Moon are rewarding, and an easy way to learn to shoot through your telescope. While good results are possible with a phone camera clamped to an eyepiece (as shown below), this tuto...