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Optolong 50 mm Narrow Band Filter Set H-Alpha, O-III, S-II for Astrophotography

Name: Optolong 50 mm Narrow Band Filter Set H-Alpha, O-III, S-II for Astrophotography
Brand: Optolong
SKU: OPLNFS50
Price: 581 EUR

Narrowband filter set from Optolong for astrophotography with extreme contrast - also suitable for the Hubble palette

H-alpha (7 nm), O-III (6.5 nm) and S-II (6.5 nm) bandwidths

50 mm unmounted

Precise filter curves for very good contrast

Multi-layer anti-reflective coating

Scratch resistant hard coating for long lifetime

Identical filter thicknesses for parfocality

Each filter comes in a high-quality carrying and storage box

Manufacturer: Optolong

Product number: OPLNFS50

EUR 581,00

incl. 19 % VAT (DE)

The VAT indicated refers to that applicable in Germany. After logging in, the VAT amount is adjusted to the applicable VAT of the stored delivery country. Therefore, the final price may vary accordingly.

excl. 6.95 € shipping costs (DE)

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Optolong 50 mm Narrow Band Filter Set H-Alpha, O-III, S-II for Astrophotography

Narrowband filter set from Optolong for astrophotography with extreme contrast - also suitable for the Hubble palette

H-alpha (7 nm), O-III (6.5 nm) and S-II (6.5 nm) bandwidths

50 mm unmounted

Precise filter curves for very good contrast

Multi-layer anti-reflective coating

Scratch resistant hard coating for long lifetime

Identical filter thicknesses for parfocality

Each filter comes in a high-quality carrying and storage box

Details..
Technical data..
In the box..
Reviews..

Optolong Narrowband Filter Set

The filter set includes three filters and enables astrophotos with extreme contrast. The filter set is suitable for both CCD and CMOS cameras. Mostly monochrome cameras are used for narrow band photography, but also color cameras are suitable. With the right mappings (R-G-B to SII-Ha-OIII), you can use the colors of the Hubble palette via photographic post-processing. Due to the narrow bandwidths of the filters, high-contrast images succeed even under conditions with stronger light pollution.

The filter set consists of:

H-alpha filter with 7 nm FWHM:

This nebula filter is suitable for the H-II regions and is the most popular narrow band nebula filter. It greatly increases the contrast of emission nebulae radiating in H-alpha around 656.3 nm.

O-III filter with 6.5 nm FWHM:

The filter transmits the light of doubly ionized oxygen around 496 nm, which is present mainly in planetary nebulae, but also in many diffuse nebulae. The filter is particularly well suited for planetary nebulae.

S-II Sulphur Filter with 6.5 nm FWHM:

The filter is an important addition for the so called Hubble palette, so if you take false color images. Many emission nebulae also have a portion in the sulfur light around 672 nm.

Filter type:	Interference filter
Size:	50 mm unmounted
FWHM:	7 nm (H-alpha), 6.5 nm (S-II and O-III)
Filter thickness:	2 mm

Three nebula filters

Plastic transport container

Which side of the filter needs to face towards the telescope?

Optolong has a good explanation on their page with a check on unmounted filters. With mounted filters, it´s easy. The side with the external thread must face the camera.

Link to iOptron page: Should Optolong filters be installed in a certain orientation? (external link)
You can download the generated PDF from our own server.

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