Antlia LRGBR+ Dark Series filter

Antlia LRGBR+ Dark Series filter kit (390nm to 1000nm)

The Antlia LRGBR+ Dark Series filter kit is specially designed for full-spectrum astrophotography, covering 390nm to 1000nm. Thanks to its full-spectrum design and the use of quartz glass, this kit maximizes signal-to-noise ratio, efficiently captures UV and IR, and offers exceptional durability in extreme environmental conditions.

Kit contents

• Luminance filter (UV/IR Cut)
• Red filter (R)
• Green filter (G)
• Blue filter (B)
• Red+ filter (700-1000nm)

Applications and Performance

• Full spectrum capture, including UV and IR
• High-sensitivity imaging of galaxies, nebulae and star clusters
• Post-processing: combining the standard R channel and the R+ channel for a final enriched R
• Perfect fragrance with SHO 2.5nm Ultra Narrowband filters from Antlia

Technical specifications

• Substrate: Quartz glass, ultra-low thermal expansion
• Filter thickness: 2mm ± 0.05mm
• Maximum transmission :
  • R, G, L: ≥97%
  • B: ≥95%
  • R+ : ≥95%
• Out-of-band blocking: ≥OD4.5 (0.005%) from 300nm to 1050nm
• Optical surface: S/D 60/40 (MIL-O-13830)
• Transmitted wavefront: λ/4 or better
• Parallelism: less than 30 arcsec
• Double-sided polished filtration for optimum fragrance

Available sizes and prices

• LRGBR+ Dark Kit:
  • Ø36mm unassembled: 500 USD (5 pieces)
  • 2″ mounted: 680 USD (5 pieces)
• LRGB Dark kit (without R+) :
  • Ø36mm unassembled: 450 USD (4 pieces)
  • 2″ mounted: 600 USD (4 pieces)
• R+ filter only :
  • Ø36mm unassembled: USD 60
  • 2″ mounted: 90 USD

Advantages of the LRGBR+ Dark kit

• Enhanced spectrum capture thanks to the Red+ channel (700-1000nm)
• Exceptional durability in the face of thermal and mechanical variations
• Advanced suppression of out-of-band light interference
• Excellent transmission to maximize contrast and reduce signal loss
• Direct compatibility with modern CCD and CMOS cameras
• Scratch-resistant and heavy-duty filters

Bracket design

• Antlia standard frame :
  • 1.25″ (M28.5×0.6)
  • 2″ (M48x0.75)
• Ultra-thin cell to reduce vignetting
• Anti-glare black anodized finish
• Tamper-proof laser engraving

Not recommended for

• Solar imaging
• Visual observation at night

Safety warnings

• DO NOT use to observe the Sun directly. This would cause serious, irreversible eye damage.

Warranty

• 3 years against filter delamination