PegasusAstro Filters LRGB 2" (88048)

PegasusAstro Filters LRGB 2" (88048)

The LRGB filter set is designed for color astrophotography using monochrome CCD cameras. It includes four filters that work together to produce a full-color image of deep-sky objects while maintaining the high resolution that monochrome sensors provide.

Monochrome CCD cameras are preferred in astrophotography because every pixel on the sensor contributes to capturing image detail. In contrast, color CCD cameras reduce effective resolution since approximately one third of the pixels are covered by built-in color filters. By using an external LRGB filter set with a monochrome camera, the entire sensor is utilized for each exposure, resulting in sharper and more detailed color images.

The Luminance (L) Filter

The luminance filter transmits the full visible light spectrum while blocking near ultraviolet and infrared light. This allows it to capture the maximum amount of useful detail and brightness information from celestial objects.

The RGB Filters

The RGB filters represent the three primary colors: red, green, and blue. These are the fundamental colors from which all other visible colors are formed. Just as the human eye combines signals from red, green, and blue receptors to perceive color, astrophotographers combine separate exposures taken through each RGB filter to create a complete color image.

During image processing, the luminance image is combined with the red, green, and blue exposures to produce the final high-resolution color photograph.

Using a compatible filter wheel allows quick and convenient switching between filters during imaging sessions.

Key Advantages

• LRGB filter set for color imaging with monochrome CCD cameras

• Full sensor resolution maintained through external filters

• Durable, scratch-resistant coating

• Neutral and accurate color reproduction for deep-sky objects and planets

• High transmission greater than 95%

• Homofocal design for consistent focus across filters

Technical Specifications

• Connection: 2 inch

• Frame size: 2 inch

• Mount material: Aluminium

• Optical coating: Fully multi-coated (FMC)

• Filter thickness: 2 mm

• Thread length: 2.5 mm

• Surface accuracy: 1/4 wavelength

• Height: 7.5 mm

• Filter type: L-RGB filter set

Application

• Suitable for astrophotography: Yes

• Suitable for visual observation: No

• Recommended for nebulae and galaxies: Yes

• Suitable for galaxies and star clusters: Yes

• Suitable for planetary nebulae: Yes

• Suitable for supernova remnants: Yes

• Suitable for hydrogen nebulae: Yes

• Anti light-pollution capability: No