ASKAR Colour Magic Ultra E2 Duo (OIII and SII) narrow band ASKAR filter

Name: ASKAR Colour Magic Ultra E2 Duo (OIII and SII) narrow band ASKAR filter
Brand: Askar
SKU: ASKULTRAE2
Price: 599.13 EUR
Availability: PreOrder

Reference ASKULTRAE2

Stock at Supplier

599.13

VAT excluded Shipping 5/7d

The ASKAR Duo ColourMagic Ultra E 2" narrow band filter is a professional astrophotography tool designed specifically for deep sky imaging. In addition to the traditional Duo Hα+OⅢ narrowband filter, ASKAR has innovatively introduced another filter: the SⅡ+OⅢ. The ColourMagic Ultra E2 filter is a SII+OIII filter.

Buy it now and receive it between on Thursday, 3 July and Thursday, 10 July with Home delivery - International

Delivery Options

Carrier		Description	Estimated Delivery
	Home delivery - International	Home delivery - International	Thursday, 3 July - Thursday, 10 July

Home delivery - International

Estimated delivery:
Thursday, 3 July - Thursday, 10 July

✖

Description
Product Details

The ASKAR Ultra E filter, as the name implies, has the ability to control the "Ultra" halo. During the research and development process of the filter, we optimized its design. Finally, it became a special filter with a bandwidth of 3 nm and a bandwidth above 3 nm.

When photographing deep sky galaxies with color cameras, a dual narrow-band filter is usually used in the Hα and OⅢ bands; while with a monochrome camera, a narrow-band filter is usually used in the Hα, SⅡ and OⅢ bands, which prevents color camera users from seeing a band of nebula detail. This can be compensated for with the ASKAR ColourMagic Ultra E2 (OⅢ+SⅡ) dual narrowband filter mentioned above.

长友气体

The ASKAR ColourMagic Ultra E2 Duo (OⅢ+SⅡ) narrow band filter features ultra-high transmittance of over 85 % at its center wavelength (500.7 nm and 672 nm). It effectively enhances image contrast, facilitating the visualization of star details that would otherwise be difficult to detect. In areas with high light pollution, this filter also selectively filters out light pollution and distorted signals through the nebula's emission lights to achieve the ideal photographic effect.

长友气体

Technical Specifications

ASKAR ColourMagic Ultra E2 2" Dual Narrow Band Filter (SII+OIII)

FWHM: SII: 4.0 ± 0.3 nm/OIII: 3.7 nm ± 0.3 nm

CWL: 500.7 nm and 672 nm

Maximum transmittance: 85%

Thickness: 1.85 ± 0.05 mm

Barrier property: ≥OD5 at 200-1100 nm

Surface finish: 60/40

Parallelism: 30

Transmittance curve

长友气体

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