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Astrodon 49.7x49.7 mm unmounted Luminance Filter - UV+NIR Blocking

Name: Astrodon 49.7x49.7 mm unmounted Luminance Filter - UV+NIR Blocking
Brand: Astrodon Astrophoto Filter
SKU: L2_50S
Price: 734.45 EUR

The luminance channel is probably the most important for a great final image! You want as much signal as possible so the filter should have the highest transmission possible with a wide spectral bandpass.

UV/NIR-blocking filter used for both E- and I-Series LRGB sets

Transmits at least 97% between 400 and 700 nm.

395 nm cut-on (50% transmission at 395 nm); blocked above 705 nm

Significant reflection and star halo reduction

Parfocal with Astrodon Gen2 color and luminance filters as well as with Astrodon narrowband line filters

Manufacturer: Astrodon Astrophoto Filter

Product number: L2_50S

EUR 734,45

incl. 19 % VAT (DE)

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excl. 6.95 € shipping costs (DE)

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Astrodon 49.7x49.7 mm unmounted Luminance Filter - UV+NIR Blocking

The luminance channel is probably the most important for a great final image! You want as much signal as possible so the filter should have the highest transmission possible with a wide spectral bandpass.

UV/NIR-blocking filter used for both E- and I-Series LRGB sets

Transmits at least 97% between 400 and 700 nm.

395 nm cut-on (50% transmission at 395 nm); blocked above 705 nm

Significant reflection and star halo reduction

Parfocal with Astrodon Gen2 color and luminance filters as well as with Astrodon narrowband line filters

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

Astrodon unmounted 49.7x49.7 mm Luminance Filter, square - UV+NIR blocking

A durable, hard-coated UV and IR blocking filter of the highest quality having the best transmission available.

The luminance channel is probably the most important for a great final image! You want as much signal as possible so the filter should have the highest transmission possible with a wide spectral bandpass.

Astrodon luminance filter specifications

3.000+/-0.025 mm substrate thickness

Parfocal with Astrodon Gen2 color and luminance filters as well as with Astrodon narrowband line filters

Single, striae-free fused silica substrate

1/4 wave substrate prior to coating

< 0.5 arcminute parallelism before coating

Hard coated to edge

Significant reflection and star halo reduction

Guaranteed to >= 97% transmission from 400 to 700 nm

Filter size:	49.7 mm x 49.7 mm square filter, unmounted
Thickness:	3 mm +/-0.025 mm
Parfocal to:	Astrodon Gen2 color and luminance filters, Astrodon narrowband line filters
Transmitting range:	395 nm to 705 nm
Transmission from 400 nm to 700 nm:	97% or more
Coating:	Ultra-hard and durable sputtered coating
Substrate:	Fused silica
Parallelism:	30 arcsec