The Optolong LRGB 2″ filters are specially designed for deep space photography with monochrome cameras. The strict manufacturing process and the quality control guarantees a tight tolerance of the filter thickness (± 0.05mm) which makes these filters parfocal. This allows the filter change without the need to refocus.

Each filter is fully multi-coated to minimise internal reflections, halos around stars and to assure a high transmission which is above 95%.

Each filter cuts off the ultraviolet and infrared light so there is no need to use the L filter in combination with the colour filters.

The width of bandpass of the 3 RGB filters is balanced with the spectral response of the most common CCD and CMOS cameras. This expedient allows to balance the exposure of each channel with the ratio of 1:1:1. That means the exposure time in red is equal to the exposure time in green and in blue. During post-processing, it will be easier to obtain images with a natural colour balance thus without colour dominances. The fourth L filter assures a transmission above 95% across the visible spectrum (400nm to 700nm) cutting out ultraviolet and infrared light.

The design of these filters is optimised to cut out the typical yellow emission of the sodium and mercury lamps around 589nm.

Optolong LRGB Bandpass

Specifications:

Passing band L R G B
Glass thickness 2.0 mm
Optical flatness 1/4 λ (wavefront)
Band-pass transmission above 95%
Coating Fully multi-coated
Surface quality 60/40 (in accordance with US military watch MIL-O-13830)
Parallelism 30″
Glass type Schott monolithic optical substrate (non glued)
Available sizes 1.25″, 2″, 36mm

Reviews

There are no reviews yet.

Be the first to review “Optolong LRGB Filter Sets”

Your email address will not be published. Required fields are marked *

Optolong LRGB Filter Sets

SKU: N/A

$399.00$599.00

✅ Fast Shipping & Tracking
✅ Stocked in Melbourne, Australia
✅ Expert Advice
✅ Lifetime Technical Support

    Need Expert Advice?

    Visual Astronomy, Astrophotography, Microscopy and Macro Photography can be a little complicated sometimes as there are a lot of options. If you'd like to check something before you purchase just let us know and we'd be happy to help!

    Enquire now or call us (03) 9042 2293

    Optolong LRGB Filter Sets

    SKU: N/A

    $399.00$599.00

    The Optolong LRGB 2″ filters are specially designed for deep space photography with monochrome cameras. The strict manufacturing process and the quality control guarantees a tight tolerance of the filter thickness (± 0.05mm) which makes these filters parfocal. This allows the filter change without the need to refocus.

    Each filter is fully multi-coated to minimise internal reflections, halos around stars and to assure a high transmission which is above 95%.

    Each filter cuts off the ultraviolet and infrared light so there is no need to use the L filter in combination with the colour filters.

    The width of bandpass of the 3 RGB filters is balanced with the spectral response of the most common CCD and CMOS cameras. This expedient allows to balance the exposure of each channel with the ratio of 1:1:1. That means the exposure time in red is equal to the exposure time in green and in blue. During post-processing, it will be easier to obtain images with a natural colour balance thus without colour dominances. The fourth L filter assures a transmission above 95% across the visible spectrum (400nm to 700nm) cutting out ultraviolet and infrared light.

    The design of these filters is optimised to cut out the typical yellow emission of the sodium and mercury lamps around 589nm.

    Optolong LRGB Bandpass

    Specifications:

    Passing band L R G B
    Glass thickness 2.0 mm
    Optical flatness 1/4 λ (wavefront)
    Band-pass transmission above 95%
    Coating Fully multi-coated
    Surface quality 60/40 (in accordance with US military watch MIL-O-13830)
    Parallelism 30″
    Glass type Schott monolithic optical substrate (non glued)
    Available sizes 1.25″, 2″, 36mm

    Reviews

    There are no reviews yet.

    Be the first to review “Optolong LRGB Filter Sets”

    Your email address will not be published. Required fields are marked *

      Need Expert Advice?

      Visual Astronomy, Astrophotography, Microscopy and Macro Photography can be a little complicated sometimes as there are a lot of options. If you'd like to check something before you purchase just let us know and we'd be happy to help!

      Enquire now or call us (03) 9042 2293