Antlia Dualband Energy Rejection Filter for Solar Discover - 200mm
Stock count is accurate & shown in real time.
- This item is out of stock.
- Sign up for back-in-stock alerts to be notified when this item becomes available.
- This item is out of stock.
- We have no ETA from the manufacturer at this time.
- Sign up for back-in-stock alerts to be notified when this item becomes available.
Lower 48 States:
Orders over $50 ship free within the Lower 48 using a carrier and service we select based on your items and delivery location. Faster shipping options may be available at checkout.
U.S. Outside the Lower 48 (AK, HI, PR):
Free shipping on orders over $50 applies to many—but not all—items. Add items to your cart and enter your ZIP code to see available shipping options and any costs.
International Orders:
Free shipping does not apply to international orders. You’ll see available shipping options and costs during checkout. Some items can’t be shipped internationally due to size or manufacturer restrictions. Duties, taxes, brokerage fees, and tariffs are not included and are the customer’s responsibility.
The Antlia Dualband Solar Energy Rejection (ERF) Filter is designed by combining Hydrogen Alpha, Calcium K-Line and Calcium H-Line in one dualband filter. It is used in conjunction with the Antlia Solar Discover 3nm CaK, Solar, 5Ã… CaK or similar products to protect your solar imaging equipment from high temperatures and bandpass shifting by rejecting excessive heat build up.
This ERF is very effective at blocking far UV and IR light, while allowing the desired wavelengths Ha 656.3nm, CaK 393.3nm and CaH 396.8nm to pass through.
Product Features:
- FWHM 25nm with CWL at H-alpha wavelength of 656.3nm; Transmission: T＞95%
- FHWM 25nm with CWL at CaK wavelength 393.3nm covering Calcium K-Line 393.3nm and Calcium K-Line 396.8nm; Transmission: T＞90%
- Coating Range: 200-1700nm wavelengths
- Finished with the most advanced multicoatings
- Coated on heat resistant double-polished substrate
- Antlia ERF 200mm filter is mounted in a housing/cell to hold it in front of the telescope
- Transmitted Wavefront: Lambda/4 or better.
Specifications:
- FWHM: 25nm
- CWL (Central Wavelength):
- H-alpha: 656.3nm
- CaK & CaH: CaK 393nm covering CaK 393.3nm & CaH 396.8nm
- Peak Transmission: 90%
- Coating Range: 200-1700nm
- Filter Thickness: 10mm+/-0.05mm
- Clear Aperture: 200mm
- Can be used with dewshield/tube outside diameters between 200mm and 250mm
Important Notes:
- The Antlia Dualband ERF filter cannot be used on its own. It must be used together with professionally made solar imaging equipment which have their own complete blocking filters assembled, such as Antlia Solar Discover 5AÌŠ CaK, Solar Discover 3nm CaK Assembly, Dualband Ha, CaK and CaH filter Assembly
- Please do not use the Antlia Dualband ERF filter by itself for visual observation
Other Information
- Country of Manufacture: China
The Antlia Dualband Solar Energy Rejection (ERF) Filter is designed by combining Hydrogen Alpha, Calcium K-Line and Calcium H-Line in one dualband filter. It is used in conjunction with the Antlia Solar Discover 3nm CaK, Solar, 5Ã… CaK or similar products to protect your solar imaging equipment from high temperatures and bandpass shifting by rejecting excessive heat build up.
This ERF is very effective at blocking far UV and IR light, while allowing the desired wavelengths Ha 656.3nm, CaK 393.3nm and CaH 396.8nm to pass through.
Product Features:
- FWHM 25nm with CWL at H-alpha wavelength of 656.3nm; Transmission: T＞95%
- FHWM 25nm with CWL at CaK wavelength 393.3nm covering Calcium K-Line 393.3nm and Calcium K-Line 396.8nm; Transmission: T＞90%
- Coating Range: 200-1700nm wavelengths
- Finished with the most advanced multicoatings
- Coated on heat resistant double-polished substrate
- Antlia ERF 200mm filter is mounted in a housing/cell to hold it in front of the telescope
- Transmitted Wavefront: Lambda/4 or better.
Specifications:
- FWHM: 25nm
- CWL (Central Wavelength):
- H-alpha: 656.3nm
- CaK & CaH: CaK 393nm covering CaK 393.3nm & CaH 396.8nm
- Peak Transmission: 90%
- Coating Range: 200-1700nm
- Filter Thickness: 10mm+/-0.05mm
- Clear Aperture: 200mm
- Can be used with dewshield/tube outside diameters between 200mm and 250mm
Important Notes:
- The Antlia Dualband ERF filter cannot be used on its own. It must be used together with professionally made solar imaging equipment which have their own complete blocking filters assembled, such as Antlia Solar Discover 5AÌŠ CaK, Solar Discover 3nm CaK Assembly, Dualband Ha, CaK and CaH filter Assembly
- Please do not use the Antlia Dualband ERF filter by itself for visual observation
The Antlia Dualband Solar Energy Rejection (ERF) Filter is designed by combining Hydrogen Alpha, Calcium K-Line and Calcium H-Line in one dualband filter. It is used in conjunction with the Antlia Solar Discover 3nm CaK, Solar, 5Ã… CaK or similar products to protect your solar imaging equipment from high temperatures and bandpass shifting by rejecting excessive heat build up.
This ERF is very effective at blocking far UV and IR light, while allowing the desired wavelengths Ha 656.3nm, CaK 393.3nm and CaH 396.8nm to pass through.
Product Features:
- FWHM 25nm with CWL at H-alpha wavelength of 656.3nm; Transmission: T＞95%
- FHWM 25nm with CWL at CaK wavelength 393.3nm covering Calcium K-Line 393.3nm and Calcium K-Line 396.8nm; Transmission: T＞90%
- Coating Range: 200-1700nm wavelengths
- Finished with the most advanced multicoatings
- Coated on heat resistant double-polished substrate
- Antlia ERF 200mm filter is mounted in a housing/cell to hold it in front of the telescope
- Transmitted Wavefront: Lambda/4 or better.
Specifications:
- FWHM: 25nm
- CWL (Central Wavelength):
- H-alpha: 656.3nm
- CaK & CaH: CaK 393nm covering CaK 393.3nm & CaH 396.8nm
- Peak Transmission: 90%
- Coating Range: 200-1700nm
- Filter Thickness: 10mm+/-0.05mm
- Clear Aperture: 200mm
- Can be used with dewshield/tube outside diameters between 200mm and 250mm
Important Notes:
- The Antlia Dualband ERF filter cannot be used on its own. It must be used together with professionally made solar imaging equipment which have their own complete blocking filters assembled, such as Antlia Solar Discover 5AÌŠ CaK, Solar Discover 3nm CaK Assembly, Dualband Ha, CaK and CaH filter Assembly
- Please do not use the Antlia Dualband ERF filter by itself for visual observation
Other Information
- Country of Manufacture: China
| Free Shipping Graphic | Free US Shipping |
|---|---|
| Hide Found a better Shipped Price on Frontend? | No |
Antlia Dualband Energy Rejection Filter for Solar Discover - 200mm