Astronomik L-RGB Typ 2c, mounted 1.25"Our filter set especially designed for astrophotography with CCD
cameras. These filters provide a natural color reproduction of planets,
stars, emission- and reflection nebulas.
The transmission properties of the L-RGB Typ 2c filters are optimized
for CCD astrophotography. The set allows to take images in correct
colour for all types of objects. Where other brands make strange
compromises, we do the best colour reproduction possible. Both stars as
well as objects that emit only in spectral lines, are reproduced in
their true colors. You get CCD images with perfect colors, as if the
objects where bright enough to be seen with photopic vision. This
feature is the main difference between Astronomik filters an those of
other manufacturers.
The following aspects have been most important for the design of our filterset:
- simple image processing for the user
- highest transmission (nearly 100%) for short exposure times
- adjusted transmissions of the individual filters for optimal colour reproduction
- the use of industry standards
Astronomik
doesn't stop thinking at the step of taking the picture. More important
a tool should be given to the astrophotographers that offers a simple
and elegant editing process. To maintain the colour, we calculated our
filterset for the sRGB color space, that is used as an industry standard
from most manufacturers of monitors, printers and imaging software. As a
user you do not need to spend time to learn about colourimetry and
colour spaces. We have solved the special problems of astrophotography
for you.
Due to the high-precision machining of the carrier
substrate, our filters are parfocal with wedge errors below all usual
margins. In order not to be the bottleneck in a high-quality optical
system Astronomik filters are of course diffraction limited. Issues
concerning focal distances as well as the exact location of the images
of each colour image are not a problem at all!
Main use
The L-RGB filter set divides the spectrum into its components red,
green, blue and luminance. Thus colour separation can be achieved with
pure b/w CCD sensors. The separation corresponds to the colour
sensitivity of the human eye according to DIN 5032. By using the sRGB
color space it is possible to maintain the color of the image throughout
the entire image processing and output. With an Astronomik L-RGB filter
set and your camera you create ideal raw material for imageprocessing
in the sRGB color space.
Other uses
- In combination with the Astronomik line
filters your images will show interesting details of astronomical
objects. For example, the red image can be enhanced by H-alpha or the
green image by OIII.
- For planetary observation and photography the color filters are gladly "misused".
Suitability- Visual observation (dark skies): Good, used as colour filter for planetary observations
- Visual observation (urban skies): Good, used as colour filter for planetary observations
- Film photography: Unsuitable
- CCD photography: Very good, excellent colour separation with RGB and L-RGB pics
- DSLR photography (original): Unsuitable
- DSLR photography (astro modified): Unsuitable
- DSLR photography (MC modified): Unsuitable
- Webcam / Video (Planets): Good, used as colour filter for imaging planets
- Webcam / Video (Deep Sky): Good, used as colour filter for imaging planets
Delivered with:
Products specifications
|
parfokal with all Astronomik filters
|
Yes |
|
Thickness
|
1mm |
|
Filter thread / size
|
1.25" |
|
Transmission
|
97%-99% |
