Askar Premium 1.25" LRGB Astrophotography Filter Set

Enhance your astrophotography with the Askar Premium 1.25" LRGB Filter Set, meticulously engineered for use with monochrome cameras featuring CMOS and CCD sensors. These filters are essential for capturing stunning astronomical images with precision and clarity.

Crafted from high-quality glass substrates with a precise thickness of 1.85 mm, this filter set guarantees superior performance. With a remarkable transmittance rate exceeding 90% within designated spectral ranges, these filters effectively eliminate unwanted light wavelengths, ensuring only the necessary light reaches your camera sensor.

The G and R filters are specially designed to tackle light pollution from sodium lamps, maximizing transmittance at critical wavelengths while minimizing interference.

Each filter is rigorously tested in the manufacturer's laboratory to ensure it meets stringent technical specifications, delivering reliable and consistent performance.

Key Features of Askar LRGB 1.25" Filters:

• A complete set of four filters optimized for monochrome CCD and CMOS cameras in astrophotography.
• High transmittance within pass bands and superior optical density for other spectral ranges.
• Parfocal compatibility with other astrophotographic filters for seamless integration.

Technical Specifications:

• Filter Type: Bandpass filter, LRGB
• Application: Monochrome CCD and CMOS cameras
• Filter Diameter: 1.25"
• Filter Thickness: 1.85 ± 0.1 mm
• Filter Shape: Round
• RGB Channels Weights: 1:1:1
• Maximum Transmission for the L Filter: >95%
• Maximum Transmission Range for the L Filter: 400 - 695 nm
• Equivalent Optical Density for the L Filter: OD3
• Blocking Range for the L Filter: 300 - 385 nm / 720 - 1050 nm
• Maximum Transmission for the R Filter: >93%
• Maximum Transmission Range for the R Filter: 598 - 693 nm
• Equivalent Optical Density for the R Filter: OD3
• Blocking Range for the R Filter: 300 - 583 nm / 713 - 1100 nm
• Maximum Transmission for the G Filter: >93%
• Maximum Transmission Range for the G Filter: 500 - 580 nm
• Equivalent Optical Density for the G Filter: OD3
• Blocking Range for the G Filter: 300 - 380 nm / 595 - 1050 nm
• Maximum Transmission for the B Filter: >90%
• Maximum Transmission Range for the B Filter: 395 - 500 nm
• Equivalent Optical Density for the B Filter: OD3
• Blocking Range for the B Filter: 300 - 380 nm / 520 - 1050 nm
• Surface Quality Index: 60/40
• Parallelism: 30"
• Light Incidence Angle: 0 - 8°
• Frame Finish: Matte black, anodized
• Holder Thread: M28.5x0.6

Components Included in the Set:

• Askar RGB R filter (red) 1.25"
• Askar RGB G filter (green) 1.25"
• Askar RGB B filter (blue) 1.25"
• Askar L filter (luminance) 1.25"

Guarantee:

Enjoy peace of mind with a generous 24-month warranty, ensuring quality assurance and reliability.