Antlia LRGBR+ Dark Series Filter Set

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About this product

Antlia LRGB + Dark Filter Set

The Antlia LRGBR+ Dark series filters are designed with a full spectrum curve from 390nm to 1000nm, making it sensitive to UV and IR light for high signal-to-noise ratio and contrast imaging in deep sky full-spectrum photography.

The LRGB dark series filters are made of quartz glass, which has exceptional thermal and mechanical properties due to its ultra-low thermal expansion coefficient. These filters offer remarkable durability for imaging and research in the most challenging environmental conditions.

Considering the high quantum efficiency (QE) of cameras sensitive to near-infrared, Antlia incorporates a Red+700-1000nm filter into LRGB dark series to capture valuable signals that regular LRGB filters cannot detect. 

 In post-processing, combine the R and R+ channels to create a new R channel. The remaining steps for processing are identical to those used as regular LRGB filters.

The LRGBR+ Dark series filters are best paired with Antlia SHO 2.8nm and 2.5nm Ultra Narrowband filters, as they share the same quartz substrate and refractive index, resulting in better parfocality.

Features

• Full spectrum design enhances the sensitivity of imaging to both UV and IR light
• High transmittance (B filter≥95% L-R-G filter≥97%) ensures there is almost no loss in the image signal and maximum contrast
• Made of quartz glass, excellent durability and thermal stability, as well as better fracture and scratch resistance, improved coating resilience to cleaning
• More infrared can be found by combining the Red+ filter
• Out-of-band blocking specification is designed to OD4.5 (0.005%) to block interference from other wavelengths and minimise halos around bright stars
• Identical filter thickness to existing standards and double-sided fine polishing, with utmost care for parfocality
• All Antlia filters are coated to the edge of the substrate, and unmounted narrowband filters are edge blackened to eliminate internal reflections from stray light
• Filters are resistant to scratches

Warranty: 3 years against delamination.

Filter Ring

Antlia standard thread: 1.25’’ (M28.5*0.6), 2’’(M48*0.75 pitch)

Ultra-thin filter cell minimises vignetting by maximising possible clear aperture.

Black Anodised Finish

Laser Engraving No Fading

Not Recommended for

Solar imaging

Night visual observation

Not Permitted

DO NOT LOOK AT THE SUN WITH THIS FILTER! 

Serious eye damage will result if you fail to observe the warning. 

Specifications

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