EAGLE that combines, in one device, a powerful computer with Windows
10 Enterprise operative system to the most advanced power management system
for telescopes to allow you to control any device (camera, mount, astrophotography
accessories, etc.), also remotely and with any astrophotography software.
These Powermates™ are a better choice for 2" diagonals than Barlows,
since they are nearly Parfocal. They are threaded for 48mm filters and
their performance is excellent with every 1¼" and 2" eyepiece
we make (yes, even the 31mm Nagler Type 5!). Both the 2" eyepiece
holder and the special 2" flat top adapter use our brass clamp rings
for secure operation. And, it also has a very unique feature: you can
unscrew the 2" eyepiece housing and screw on a special T-ring adapter
for solid, compact attachment of CCD or camera equipment.
These Powermates™ are a better choice for 2" diagonals than Barlows,
since they are nearly Parfocal. They are threaded for 48mm filters and
their performance is excellent with every 1¼" and 2" eyepiece
we make (yes, even the 31mm Nagler Type 5!). Both the 2" eyepiece
holder and the special 2" flat top adapter use our brass clamp rings
for secure operation. And, it also has a very unique feature: you can
unscrew the 2" eyepiece housing and screw on a special T-ring adapter
for solid, compact attachment of CCD or camera equipment.
Blocking Depth: Light pollution line blocking
>99%
Wavelengths H-alpha, O III
- Wavelength
Chart
The L-eXtreme filter is dual band that passes Ha and OIII emission lines.
L-eXtreme is a two 7nm bandpass filter which can be used with one-shot
color cameras like DSLR's (digital SLR), and monochrome CCD cameras, it
is also more suited for fast systems. The convenience and cost effectiveness
of this filter allows amateurs to image a rich emission nebulas, even
in bright, light pollution skies. Optolong believes the design of L-eXtreme
filter would be better choice for fast systems in competitive price. It
isolates the H-Alpha, and Oxygen III nebula emission lines so that the
contrast and signal-to-noise ratio between nebulae were maximized. For
people who is living in very light polluted areas, or when the moon is
out, the L-eXtreme will be a good filter.
Unlike the Optolong L-eNhance filter which is a tri-band (transmits
Hb, Ha, and OIII), the L-eXtreme filter is dual band that passes Ha and
OIII emission lines.The advantage of the L-eXtreme filter is that there
is no transmission between the H-beta and OIII lines, as there is no nebula
emission lines there. In this case, it isn't letting light pollution come
through so that maximize nebulas signal and make the sky background darker
while imaging. The L-eXtreme filter should better isolate the emission
lines only and better protect from light pollution.
Hydrogen is the largest, the most primitive, the simplest, and the oldest
element in the universe. Scientists consider that Hydrogen amounts to
more than 90% of visible substance in space. Our sun is 5 billion years
old, but so far hydrogen is still the key matter of nuclear fusion. While
the sulfur element does not have much scientific significance, so keeping
H and O is meaning for exploration of life.
Therefore, we highlight H-a, H-b, O3 and O2, and reduce the signal of
sulfur.
Primary Usage: Astrophotography Deep
Broadand Photography
Filter Size: 2" Mounted
FilterType: Triband
Manufacturer OPT
Wavelengths H alpha/656.3/3nm
Wavelengths OIII/H beta/ Center 493/18nm
- Wavelength Chart
Improves colour balance with colour cameras and also uniquely provides
LED light pollution suppression.
Following from the highly successful IDAS P2 and D1 LPS filters, the
D2 has been optimised for one-shot colour and modified DSLR cameras. The
key concept of the D2 LPS is to reduce the reddish background cast whilst
blocking as much light pollution as possible improving upon the already
good colour balance of the P2 LPS and in addition block high/low sodium
and white LED light pollution.
Light pollution suppression (LPS) filters are designed to suppress the
common emission lines generated by artificial lighting, yet allow the
important nebula emission lines to pass, thus enhancing the contrast of
astronomical objects, particularly emission nebulae (see filter plots).
Unlike other light pollution suppression filters, IDAS filters are specifically
designed for balanced colour transmission using the IDAS unique Multi-Bandpass
Technology (MBT) process. The balanced transmission allows colour photographs
to be taken with minimal colour cast to broadband emission objects such
as stars, galaxies and globular clusters.
IDAS LPS filters utilize the unique IDAS Ion Gun Assisted Deposition
(IGAD) coating technology for superior coating durability (quartz hardness)
and safer cleaning. IGAD coatings also improve temperature and humidity
stability, reducing spectrum shifts down to +/-1nm from the +/-3 or 4nm
shift of standard coatings.
CCD imaging can also benefit, because although CCD imagers can already
shoot through light pollution to some extent, including an LPS filter
to the setup gives an added (signal-to-noise) edge. The filter also blocks
infrared so a separate IR blocking filter is not needed.
Note, however, that light pollution suppression filters are not a perfect
substitute for dark skies.
D2 LPS filters are initially available in 2" threaded cells and
photographic filter size 52mm.
Dealing with light pollution is the biggest challenge for astrophotographers.
Until now taking narrowband color images involved the complexity and high
cost of upgrading your camera with a filter wheel, 3 or more filters,
adapters, and software. Now there is a more affordable all new option
that delivers dramatic detailed images even in bright settings.
Triad is a revolutionary multi-band filter technology that passes only
H-alpha, H-Beta, and Oxygen III emission lines enabling any color camera
to now capture RGB narrowband images. It’s an affordable single-filter
option guaranteed to dramatically reduce light pollution and increase
your signal even in bright urban and moonlight settings.
Engineered specifically for use with DSLR, CMOS, and CCD color cameras,
Triad features advanced multi-coatings and extreme tolerance glass, making
it the most consistent and accurate light pollution suppression filter
available. 100% American made.
Primary Usage: Astrophotography City
Deep Sky imaging
Format: 2" Mounted
Manufacturer: Astronomik
• 95% transmission at 486nm (H-beta)
• 95% transmission at 496nm (O III )
• 95% transmission at 501nm (O III )
• 97% transmission at 656nm (H alpha)
• 1. Passband 450nm to 520nm
• 2nd passband 640nm to 690nm
- Wavelength Chart
List Price: $200
The CLS-CCD Filter enhances the contrast between astronomical objects
and the background. Due to the wider transmission curve compared to UHC
filters, a greater amount of light will pass the filter. Stars will be
less dimmed. This filter has been optimized to block as much spurious
light as possible and simultaneously provide the best performance for
'useful' light. A good filter for DSLR-, CCD- and film b/w-photography
as well as observation of deep-sky-objects with telescopes or photo lenses
of all aperture f/3 and above.
Main use
The filter blocks completely emission lines of artificial light sources
like streetlights (e.g. sodium- and mercury-vapor) as well as the airglow.
All 'important' emission lines as well as the spectral range of the night-adapted
eye are beeing passed. The supplementary IR-blocking layer allows the
use for DSLR- and Webcams without an integrated IR-block filter.
Primary Usage: Astrophotography City
Deep Sky imaging
Filter Size: 2" Mounted
Manufacturer: Astronomik
97% transmission at 486nm (H-beta)
97% transmission at 496nm (OIII)
97% transmission at 501nm (OIII)
97% transmission at 656nm (H alpha)
- Wavelength Chart
List Price: $200
This filter is universally suitable for visual observation, from the
city as well as from dark areas. It improves the contrasts of emission
nebulae and objects in medium and large telescopes.
The UHC filter increases the contrast between emission mists, supernova
remnants, planetary nebulae and sky background. Objects that you could
only imagine without a filter in the eyepiece will literally catch your
eye and become visible in unimaginable detail. Even under seemingly good
observation conditions far outside of cities and artificial lighting,
the filter achieves a significant increase in contrast by blocking the
atmospheric lighting (airglow). The observation is like looking through
a telescope with a considerably larger opening. With the same limit size,
the visually recognizable details of the objects increase drastically.
Operation
The filter completely blocks the emission lines of low and high pressure
lamps (mercury (Hg) and sodium (Na)) and the airglow lines. However, the
lines of H-beta and O III can happen. As a result, there is an increase
in contrast between the sky background and the observation object, which
is larger than in the UHC-E filter due to the lower half-width. H-alpha
can also happen, which is not relevant to visual observation, but adds
considerable value to electronic sensors.
Suitability of the filter
• Visual observation (land): Very good, for telescopes of all openings
with large exit pupil
• Visual observation (city): Very good, for telescope from 100mm opening
• Conventional Film: Neutral but very long exposure time
• CCD Astrophotography: Good, additional IR blocker required
• DSLR Astrophotography (unmodified): Good, although color-shifted,
but improved contrast
• DSLR Astrophotography (astro modified): Very good, the white balance
is very good
• DSLR astrophotography (rebuilt with MC clear glass): Good, additional
IR blocker required
• Webcam / Video (Planets): Unsuitable
• Webcam / Video (Deep Sky): Good, if light pollution is a big problem
With integrated IR blocker and Phantom Group Coating
Drastic contrast enhancement for all telescopes, without loss of image
brightness! This filter is initially based on a development by Carl Zeiss.
The effect of the element neodymium as filter material is very impressive.
If used as co-mixture to optical glass, it improves the contrast and enhances
the red portions of the image (especially for Mars and Jupiter). At night
it blocks that part of the spectrum, which suffers most from street lighting
– and it blocks the light pollution, also known as „skyglow“. And lastly,
the applied UV/IR blocking coating (Luminance-coating - check the spectral
trace) cuts all unwanted UV below 400 nm and NIR above 700 nm - this makes
it the „sharpest contrast enhancing filter“ for imaging.
Compare with the moon & Skyglow filter before the naked eye, to
test the effectiveness. Red and blue colours are extensively strengthened.
If you cannot see the GRS (Great Red Spot) due to pollution try this which
will allow you to see it.
In order to establish a precise plan area and to maintain the planarity
despite the applied forces through the different layers of coating, a
high technical effort is necessary. You have to choose from a large amount
of raw glass only the best pieces in tension-free annealed quality to
even hope for a good final quality may. All too easily, the glass deforms
with improper preparation or coating on older evaporation systems. The
final product is almost useless, if not greatest of care is taken at every
stage of production.
SURFACE DETAILS ON MARS, JUPITER AND MOON AS WELL AS MANY DEEP-SKY-OBJECTS
BECOME MUCH MORE PROMINENT.
• Selective contrast filter, especially suitable for all reflector telescopes
• Filters out specific wavelengths, especially those caused by streetlight
and most importantly their scattered light which lightens up the night
sky
• Selective blocking retains natural colours intact but with RGB significantly
enhanced, differences in colour and brightness persist.
• 95% transmission in the selected spectral range.
• Fits all standard filter threads and can be combined with other filters
– e.g. the planeoptically
• polished (!) Baader planetary colour filters. This way, you can see
fine details better or combine several images with a monochrome camera
to achieve colour images.
• The filter is at the same time optimised for Astrophotography due
to it‘s full UV/IR-blocking coating. When used with DSLRs, stars will
remain much tighter, because the unfocussed UV and IR parts of the spectrum
are blocked out.
• Planeoptically polished; can be used without problems in front of
a binoviewer or for afocal photography – far away from the focus without
loosing sharpness!
• The fine-optical polish and absence of wedge error in the glass ensure
perfect sharpness when magnifying more than 200x - while the much cheaper
“fire -polished” filter glasses destroy the optical wavefront at high
mags
Lumicon 2 Inch Comet Filter is a narrow band-pass filter (25nm), which
isolates the 501nm OIII line and both C2 lines at 511nm and 514nm.
The high contrast of the filter reveals the delicate ionized tail of
gaseous comets for optimal viewing. The Comet Filter also helps better
distinguish gaseous comets from dusty comets, which normally show little
contrast gain.
Note: Not useful for dusty comet tails,
just gas comet tails
- High Resolution Lunar and Planetary
Imaging Hints and Tricks
Baader IR-Pass Filer HWB 685nm
Reduces the effect of seeing resulting in a much
sharper image.
Tip for use: Ideal for imaging and used for the
luminosity channel. The effect of use: The normal spectral bandwidth is
400-700nm. This filter starts at 670nm in the deep red, just in the visual
range so it can be focussed correctly. At this long-wavelength spectral
range the atmospheric air turbulence (seeing) has much lower impact on
the sharpness. Dark structures on Mars, Jupiter the Moon and the Sun are
thereby rendered much sharper. The luminosity can then be combined with
RGB creating a very sharp LRGB image.
Highly recommended for any planetary imager.
Reflex free anti-reflective and optically polished.
Manual
- Connection Diagram
