Antlia Dualband Energy Rejection Filter for Solar Discover - 2"
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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 Antlia Solar Discover 3nm CaK, Solar, 5Ã… CaK or similar product 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 2’’ mounted filter is installed on the back end of the refractor 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
- Size: 2" round mounted
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
- 2’’ ERF filter can be used 110mm or smaller refractors.
| Free Shipping Graphic | Free US Shipping |
|---|---|
| Hide Found a better Shipped Price on Frontend? | No |
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 Antlia Solar Discover 3nm CaK, Solar, 5Ã… CaK or similar product 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 2’’ mounted filter is installed on the back end of the refractor 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
- Size: 2" round mounted
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
- 2’’ ERF filter can be used 110mm or smaller refractors.
| Free Shipping Graphic | Free US Shipping |
|---|---|
| Hide Found a better Shipped Price on Frontend? | No |
Antlia Dualband Energy Rejection Filter for Solar Discover - 2"