What is LRGB filter?
The LRGB filter set divides the spectrum into its components: red, green, blue and luminance. The gap between green and red filters serves to block out the primary Sodium (Na) light pollution line at 589nm and improves color balance and separation.
What does a luminance filter do?
Being clear, the luminance filter lets in more light than the color filters, usually twice as much per given time period. Depending on your image scale, it is possible to bin your L exposures 1×1 for maximum detail, and bin your RGB exposures 2×2 to make the camera more sensitive to color.
What is LRGB imaging?
LRGB, short for Luminance, Red, Green and Blue, is a photographic technique used in amateur astronomy for producing good quality color photographs by combining a high-quality black-and-white image with a lower-quality color image. The LRGB method is used to work around this to get good color images.
Are Optolong filters parfocal?
Celestron just unveiled their new focuser for SCTs too. And I’ve verified that the Optolong NB (new batch) are parfocal. Will have to test it out more to determine it well. Also, Optolong’s Oiii filters doesnt have that blotchy bright star effect anymore, which is a huge plus.
What is a luminance filter astrophotography?
Optolong L-eNhance is a dual-band pass filter which has been designed for DSLR (digital SLR), color CMOS and monochrome CCD cameras. The convenience and cost effectiveness of this filter allows amateurs to image a rich selection of astronomical images, even in bright, heavily light-polluted areas.
Where are Optolong filters made?
China
Optolong is the first filter manufacturer with its own astronomical brand in China.
Can you use light pollution filter with luminance filter?
Our L2P filters are designed to be used the same way that you would use a regular Astrodon Luminance filter, either by itself or as part of a LRGB filter set. Many people get both and use the L2P in light polluted skies (Bortal 5, NELM 6.0, SQM 20.4, or worse) and the regular Astrodon Luminance in darker skies.
What is a CLS filter?
The Astronomik CLS is a budget filter for visual observation, Black & White photography and CCD photographs of nebulae, galaxies and star clusters with astronomical instruments of any size.
Who makes Astrodon filters?
Optical Structures Incorporated
Astrodon has been purchased by Optical Structures Incorporated (OSI). The web store has transitioned to the OSI store at FarpointAstro.com.
What is optoptolong LRGB filter set?
Optolong LRGB filter set is designed for maximum contrast and with extremely high gradients for clear differentiation of colors. The LRGB filter set divides the spectrum into its components red, green, blue and luminance.
What happens if the RGB filter blocks the IR?
In other words, if your RGB filters block the IR, but the L doesn’t, there will be no color data to support the IR, and the IR data the L lets through will show up as an ugly gray in the picture. Being clear, the luminance filter lets in more light than the color filters, usually twice as much per given time period.
Why optolong LRGB with OIII emission?
OIII emission overlaps on blue and green filters with maximum transmission to allow high efficiency and natural color imaging. Gap between green and red filters serves to block out the primary Sodium light pollution line at 589nm and improves color balance and separation. 1. Optolong LRGB Introduction
Why does the L filter block the IR?
The L filter also must block the near-IR so that when you combine the L with the RGB, you don’t get unsupported signal. In other words, if your RGB filters block the IR, but the L doesn’t, there will be no color data to support the IR, and the IR data the L lets through will show up as an ugly gray in the picture.