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Antlia Solar Discover energy rejection filter in 2 inch filter cell - M48x0.75 thread

Name: Antlia Solar Discover energy rejection filter in 2 inch filter cell - M48x0.75 thread
Brand: ANTLIA
SKU: ANERF2
Price: 149 EUR
Rating: 5 (1 reviews)

The filter reflects the heat radiation and is made for small refractors and camera lenses. It is necessary for H-alpha and calcium solar photography.

2" filter thread with M48x0.75 male thread - low-profile mount

Suitable for adaptation in front of the H-alpha or calcium attachment for refractors up to 100 mm aperture

Suitable for small camera lenses or refractors in front of the objective

25 nm transmission in the H-alpha and calcium range - transmission 90

Min. 1/4 lambda accuracy - plane-parallel disks in high-quality cell

Manufacturer: ANTLIA

Product number: ANERF2

EUR 149,00

incl. 19 % VAT (DE)

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excl. 6.95 € shipping costs (DE)

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rating: 5.0 of 5

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Antlia Solar Discover energy rejection filter in 2 inch filter cell - M48x0.75 thread

The filter reflects the heat radiation and is made for small refractors and camera lenses. It is necessary for H-alpha and calcium solar photography.

2" filter thread with M48x0.75 male thread - low-profile mount

Suitable for adaptation in front of the H-alpha or calcium attachment for refractors up to 100 mm aperture

Suitable for small camera lenses or refractors in front of the objective

25 nm transmission in the H-alpha and calcium range - transmission 90

Min. 1/4 lambda accuracy - plane-parallel disks in high-quality cell

Details..
Technical data..
In the box..
Manufacturer infos..
Safety informations..

Antlia energy rejection filter for solar observation and solar photography

The filter is placed in front of the H-alpha attachment or calcium attachment. The filter reflects the heat radiation. When used in a refractor, the solar energy is already concentrated by the objective. We therefore recommend using the filter up to a maximum aperture of 100 mm. Larger apertures should be fitted with an energy protection filter in front of the objective.

The transmission of the filter

The ERF has two transmission ranges, on the one hand H-alpha around 656.3 nm and on the other hand a window around CaK (393 nm) and CaH (396.8 nm). This allows the important ranges for solar observation and photography to pass through. Other areas and in particular the IR light are reflected.

Mount:	2" low-profile filter cell with M48x0.75 connection thread
Transmission H-alpha:	FWHM 25 nm - 656.3 nm
Transmission calcium:	FWHM 25 nm - 393.3 nm and 396.8 nm
Max. Transmission:	90 %
Coating:	Best possible coating in the 200-1700 nm wavelength range
Accuracy:	1/4 lambda or better

Energy rejection filter

Transport box

Manufacturer / Importeur:	Teleskop-Service Ransburg GmbH
Street:	Von-Myra-Str. 8
ZIP / City:	85599 Parsdorf
Country:	Germany
Telefon number:	+49 89 99228750
Email:	info@teleskop-service.de
Website:	www.teleskop-service.de