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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 SV220 SII & OIII 7nm is a Duo Band Filter. It is designed to be used in combination with the SV220 H-Alpha & OIII Duo Band Filter to provide a superior method for achieving the SHO (Hubble Pallet) narrow band colour balance with colour imaging cameras. The SII and OIII Filter provides the missing band data so that owners of colour cameras can achieve the SHO colour balance in their narrow band images. The Duo-band filter (SII+OIII) has a high transmission of over 85% at its center wavelength (500.7nm and 672nm). It can effectively improve the quality of the image by making the sky background of the image darker while maximizing contrast throughout the image and enhancing the contrast of your pictures, thus making it easier to display the details of the stars. In areas with very serious light pollution, this filter can also selectively filter light pollution.
What's in the Box
Specifications
| Model | SV220 |
| Name | SII & OIII Duo-Band OSC Filter |
| Size | 1.25-Inch |
| Substrate Thickness | 1.80mm |
| Clear Aperture | 26mm |
| Wavelength Range | 300-1000nm |
| FWHM | 7nm |
| Blocking | ≥OD5 |
| Peak transmittance | ≥88% |
| Surface Quality | 60/40 |
| Surface Parallelism | 1/2λ |
| Thread | M28.5x06 |
| Single Thread | Yes |
| Net Weight | 7g |
Additional Articles, Videos, and Links
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Astrophotography for Beginners Step 1: Using the Star Adventurer Tracker
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Astrophotography for Beginners Step 2: How to Shoot the Moon
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