BAADER PLANETARIUM
Accessories



Baader Planetarium offers several different eyepiece lines for various applications. Whether you are looking for a specialized eyepiece for viewing the planets at highest contrast, or rather a wide angle eyepiece with excellent allround performance - Baader Planetarium has the right eyepieces for you!


Easy Payment: We offer our customers several easy and fast payment methods. You will receive exact payment details when ordering or on request!

Adapterschema.JPG (8565 Byte) Adapterschema.JPG (8565 Byte) Adapterschema.JPG (8565 Byte) sonnenfolie.JPG (9028 Byte)
Star diagonals:
Baader T2 and 2" Star Diagonals.
Zeiss prisms or Maxbright dielectrical mirrors
Filters:
Various filters for visual and photographical applications. Nebular filters, colour filters, CCD filters, ...
Binocular Viewers:
Binocular viewers allow you to comfortably observe with both eyes through a telescope. Baader offers several models of different price ranges.
Multi-Purpose Coma Corrector:
A good quality photographical coma corrector with an excellent value for money.
Barlow Lenses:
Apochromatic Barlow Lenses (Baader VIP & Astro Physics)
Carl Zeiss Abbe Barlow

Please send requests or online orders to: sales@telescope-service.com



Star Diagonal Prisms and Mirrors



Left: Baader T2 Star diagonal with optional 2" adaptation - the shortest optical length 2" star diagonal we know.
Right: Baader Maxbright 2" Star Diagonal - Top Quality!


T2Zenitprisma.jpg (3388 Byte)

T2 Prism / Mirror Diagonal



T2PrismamitAdapt.jpg (4039 Byte)
T2 Diagonal with 1.25" adaptors on both sides



The 2" Kit turns the ....

- Baader T2 diagonal mirror
- Baader T2 diagonal prism
- Baader T2 erecting prism

... into a limited 2" diagonal with shorter than usual optical length - for telescopes which do not allow you to reach focus with a normal 2" diagonal (Pentax 75, ...)

T-2 90° Star Diagonals / T-2 Maxbright Mirror Diagonal / 2" Maxbright Mirror Diagonal

Prisms made in Japan or even Carl Zeiss Jena prisms, all fully multi-coated and in massive, well made metal bodies with T2 threads (female thread on the side of the telescope, male thread on the side of the eyepiece). These are extremely versatile and sometimes the only solultion if you want to use 2" accessories on a telescope with short back focus (e.g. Pentax 75).

Maxbright star diagonal mirrors have a similar mechanical design, but use a dielectric mirror instead of prisms for 98% light transmission.

Item No. Short description Price - Euros incl. VAT
BA 2456005 Baader T2 prism diagonal. The diagonal has a clear aperture of 32mm - more than normal 1.25" diagonals. T2 threads on both sides. 75.-
BA 2456095 T2 prism diagonal with Carl Zeiss Jena prism. The diagonal has a clear aperture of 35mm - more than normal 1.25" diagonals 165.-
BA 2456100 Baader T2 Maxbright mirror diagonal. The diagonal has a clear aperture of 35mm - more than normal 1.25" diagonals
98.5% dielectric coating
198.-
BA 2458100 Baader Click-Lock 1.25" eyepiece holder / micro-focuser 68.-
BA 2458105 Baader 1.25" nose piece for T2 diagonals - with 1.25" filter thread 18.-
TS FA 2 2" barrel for the T2 prisms. Allows you to insert the prisms in normal 2" focusers 28.-
TS T2-2 2" clamp for the T2 prisms. Allows you to insert 2" accessories into the prism. Please note that the clear aperture is not the full 2", but rather 32mm or 35mm depending on the diagonal model. 28.-
T-2 90° Erecting Prism with 31mm Clear Aperture

Multicoated prism (made according to Zeiss quality norms), in massive, well made metal bodies with T2 threads (female thread on the side of the telescope, male thread on the side of the eyepiece).

Item No. Short description Price - Euros incl. VAT
BA 2456095 Baader T2 90° erecting prism. The diagonal has a clear aperture of 35mm - more than normal 1.25" diagonals 196.-
BA 2458100 Baader Click-Lock 1.25" eyepiece holder / micro-focuser 68.-
BA 2458105 Baader 1.25" nose piece for T2 diagonals - with 1.25" filter thread 18.-
BA 2458150 Baader 2" nose piece for T2 diagonals - with 2" filter thread 35.-
TS FA 2 2" barrel for the T2 prisms. Allows you to insert the prisms in normal 2" focusers 28.-
TS T2-2 2" clamp for the T2 prisms. Allows you to insert 2" accessories into the prism. Please note that the clear aperture is not the full 2", but rather 32mm or 35mm depending on the diagonal model. 28.-

Maxbright.jpg (3959 Byte) Baader 2" Maxbright Star Diagonal

with scratch-resistant dielectrical Astro-Physics mirror. Baader guarantees a surface quality of at least 1/10 wave and a peak reflectivity of 98.5%.

The diagonal has a 2" barrel with safety undercut and a 2" eyepiece holder with compression ring and two locking screws. Both adaptors can be unscrewed, the mirror then has the SC thread.

Optical length of the diagonal is 108mm.


Item No. Short description Price - Euros incl. VAT
BA 2406210 2" star diagonal with 98.5% dielectric coating and 1/10 wave surface quality 329.-


Please send requests or online orders to: sales@telescope-service.com


Baader Planetarium Barlow Lenses

Modular VIP Barlow
apochromatic Barlow lens - up to 4x. With T-mount threads. 1.25" / 2"
Astro Physics APO Barlow 2"
hochwertige Barlow für volle Ausleuchtung mit 2" Zubehör
Carl Zeiss Abbe Barlow 2x
eine ultimative Barlow mit
modernem Design


Modular 2x VIP-Barlow Lens
Possible Connections: 2" and 1.25" and T-2


The optical layout of the Baader VIP Barlow with apochromatic properties was created by the designer of the Carl Zeiss Abbe eyepieces.

Main feature of the VIP Barlow is its modular design. Countless adaptations are possible, the Barlow can be used both photographically and visually. In combination with additional adaptors variable magnification is possible.

In our opinion the Baader VIP Barlow is probably one of the best and most versatile Barlow lenses currently available.

The Barlow lens consists of seven separate parts, resulting in its astonishing modularity and flexibility of use. Even the full 35mm SLR film format can be fully illuminated with this Barlow lens. You can modify the Barlow to work with 2" eyepieces or use it as a glass path corrector for accessories that require much back focus (binocular viewers ...). 2" and 1.25" filters can be used.

The Left Image Shows The Separate Parts That Make Up The VIP Barlow:

It consists of:

14 - Adaptor 1.25" on T2

4D - high image definition apochromatic Barlow element

25A1 - T2 extension tube and photographical adaptor

25A2 - T2 extension tube 15mm

29 - T2 on M48 adaptor. Can be screwed directly into the 2" filter thread of most 2" eyepieces.

15 - 2" on 1.25" adaptor with brass compression ring and integrated T2 threads on both sides. The final adaptor protects the T2 male thread when not in use.

Parts (1) and (2) as well as the depicted 2" filter are not included.



The Baader VIP Barlow Lens Is Perfectly Suited For:

- digital imaging and webcam imaging
- visual use both with 1.25" and 2" eyepieces
- glass path corrector for binocular viewers 

Item No. Short description Price - Euros incl. VAT
B2406101 2x Baader VIP Barlow lens - high quality modular apochromatic Barlow 185.-

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Astro-Physics 2" Apochromatic Barlow Lens 2x


BarlowAstrop.jpg (3029 Byte)

One of the shortest and best 2" Barlow lenses according to our tests. The Barlow lens is of course fully multi-coated and is perfectly suited for both photographical and visual applications.

You can use this Barlow lens with any 2" eyepiece for extremely comfortable medium-power views. With an optional 2" on 1.25" adaptor you can of course also use it with 1.25" eyepieces.

2" eyepieces are firmly held by a brass compression ring. This will perfectly center your eyepiece on the optical axis and as a nice side-effect will avoid scratches to your eyepieces.

The lens element also fits 2" clamps directly and has a T2 thread for universal adaptations. You can use it for attaching a camera (integrated Barlow functionality) or even some binocular viewers. The Astro-Physics Barlow then serves as a glass path corrector for additional back focus.

By using optional T2 extension tubes (B1508154 / B1508155) you can enhance the magnification beyond 2x for additional versatility of use.

Item No. Short description Price - Euros incl. VAT
B1405330 Astro-Physics 2" Barlow lens with brass compression ring. Can be split for photographical use with T2 thread 345.-

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Carl Zeiss Abbe Barlow Lens - by Baader Planetarium


Baader seems to have several exotic Carl Zeiss items left ... we have received something quite amazing:

A limited number of the legendary Carl Zeiss Abbe Barlow lenses, complete with Carl Zeiss lens cell ...

....
(with engraved "Carl Zeiss" name on it!). This Barlow lens has been modified to allow for a multitude of modern functions. It has a T2 thread for easy adaptations of webcams, binocular viewers, ...

The eyepiece clamp has been replaced by the excellent Baader Click Lock clamp - a self-centering micro-focuser and eyepiece clamp that will not scratch your eyepieces.

Direct T2 Adaptation Available - Magnification Can Be Enhanced Up To 4x Without Degrading Images.

You can attach any SLR or DSLR camera to the Barlow lens using a T2 ring (also available here). The Barlow then functions both as a 1.25" adaptation for the camera and a Barlow lens at the same time. If you use the optional T2 extension tubes you can enhance magnification up to 4x without losing image quality.

These Barlow lenses are as precisely figured and polished as high quality refractor objective lenses!


Excellent Coating

These Barlow lenses have a unique coating of excellent quality. Only by looking at it from the side you will see that there are lenses at all!

Baader Click Lock Micro-Focuser and Eyepiece Clamp

The Baader Click-Lock adds innovative mechanics to the excellent optics of the Carl Zeiss Abbe Barlow lens. The clamp both holds eyepieces firmly, aligning them with the optical axis of the Barlow lens, and at the same time doubles as a micro-focusing unit.

If you unscrew the top part of the Click-Lock you will find a T2 male thread that allows you to attach T2 extension tubes - with eyepiece still in place - for eyepiece projection with integrated Barlow.

Nearly Unlimited Possibilities

Due to the modular design of this Barlow lens your options are nearly unlimited. You can use many of the Baader or TS adaptors for unique adaptations for every need. Using T2 extension tubes you can enhance magnification from 2x up to 4x without losing image quality.

Prices
 
Item No. Short description Price - Euros incl. VAT
BA 1603321 CARL ZEISS ABBE Barlow lens 2x - 1.25". With Baader Click Lock eyepiece clamp 295.-
BA 1508153 T2 extension tube 40mm for enhanced magnification 16.-
BA 1508154 T2 extension tube 15mm for enhanced magnification 15.-
BA 1508155 T2 extension tube7.5mm for enhanced magnification 14.-

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Baader Filters

Please send requests or online orders to: sales@telescope-service.com

Planetary Nebulae & Gas Nebulae
contrast enhancing filters for observing nebulae
UHC-S Nebula Filter - 1.25" & 2"
general contrast boosting filters
O-III Narrowband Filter - 1.25" & 2"
for planetary nebulae
Moon and Planets
contrast enhancing filters for objects within our solar system
Skyglow - 1.25" & 2"
general contrast boosting filter
Venus Filter - UV - 2"
Venus filter for the Venus atmosphere - photographical filter
IR Pass Filter - 1.25" & 2"
reduces seeing effects - experimental filter for photography
Colour filters - 1.25" 
Secondary Spectrum Reduction / Contrast Boosting Filters
For Fraunhofer refractors
Fringe Killer - 1.25" & 2"
for refractors up to 120mm aperture
Contrast Booster - 1.25" & 2"
for refractors larger than 120mm aperture
Semi APO Filter - 1.25" & 2"
for all refractor telescopes
 
Colour filters, CCD (LRGB), Neutral (grey) filters
specific contrast enhancing filters
Infrared/UV Cut Filter - 1.25" & 2"
for webcam & CCD imaging
IR / UV Cut Filter for CANON EOS Cameras
CCD Colour Filters (LRGB) - 1.25"
LRGB colour filters for colour images with monochrome CCD cameras
Colour filters - 1.25"
Neutral (grey) filters, Polarizing filters - 1.25" & 2" H-Alpha Pass Filter 2"
Red colour narrowband filter for astro-imaging
 
Filters for Solar Observing and Solar Imaging
(Separate Page)
AstroSolar Filter Sheet
for solar observing and imaging
Solar Continuum
Contrast Enhancing Filters for solar observing and imaging
Calcium Line Filter
for high contrast solar imaging - highlights flares and sunspot details
Solar Spectrum Sub-Angstrom H-Alpha
professional grade H-Alpha filters


Baader Nebula Filters


UHC Filter - General Use Contrast Boosting Filter For Gas Nebulae

UHC filters bring an enormous improvement for viewing low contrast, faint gas nebulae and planetary nebulae. They allow you to watch these objects even from urban areas where they would otherwise be invisible or barely discernible. The filter blocks stray light caused by street lights et al while transmitting the light of the nebulae nearly unhindered.

The Baader UHC-S filter can be used with telescopes of all apertures. Even small telescopes gain a lot from this filter, where some other UHC filters might render too dark images. Contrast is even enhanced at high magnifications.


Spectral Transmission Graphic - The 550nm to 600nm range is the main source of artificial stray light. This is where the filter blocks light nearly 100%, effectively reducing the amount of stray light that enters your eyepiece while permitting the light from the nebula nearly unhindered.

The spectral transmission graphic shows where disturbing stray light is blocked. As you can see ultraviolet (UV) light is blocked as well.

The "valleys" are the spectral location of the most common light pollution sources, i.e. many street lights etc.

The following astronomically important spectral lines are transmitted nearly unhindered:

H-Beta (486nm)
Horsehead Nebula, California Nebula, ...

O-III (501nm)
Planetary nebulae like the Dumbbell Nebula, Ring Nebula, ...

H-Alpha (656nm)
Gas nebulae like the North America Nebula, ...

The Baader UHC-S filter offers a brighter image than most common nebula filters. This allows you to use the Baader filter in small aperture telescopes.

The filter has a scratch- and age-resistant dielectric coating. The filter is precisely finished to high optical standards.


Prices:
 
Item No. Short description Price - Euros incl. VAT
BA UHC 1 Baader UHC-S filter - dielectric coating - for 1.25" eyepieces - with storage case 65.-
BA UHC 2 Baader UHC-S filter - dielectric coating - for 2" eyepieces - with storage case 112.-

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O-III Filter - For Viewing Planetary Nebulae With Maximum Contrast

O-III filters are particularly well suited for planetary nebulae. These nebulae have many details to offer in the O-III spectral line. Gas nebulae as well often contain O-III regions, meaning that the O-III filter will enhance contrast in these as well - even more so than in a UHC filter, and much more than without any filter at all.

The Baader O-III filter has a particularly narrow filter curve. We recommend to use it only in large aperture telescopes. The filter is a good mate for a broader filter like a UHC - that way you can always try which filter works best on each particular object.


The spectral transmission graphic shows where disturbing stray light is blocked. As you can see ultraviolet (UV) and infrared (IR) light is blocked as well.

Only a very narrow spectral range is permitted through the filter - the bandwidth is only 6nm around the central wavelength of 501nm.

The O-III filter allows you to observe faint planetary nebulae even in urban regions with heavy light pollution. Even at low magnifications the sky background is pitch black.

The filter has a scratch- and age-resistant dielectric coating. The filter is precisely finished to high optical standards.

Prices:
 
Item No. Short description Price - Euros incl. VAT
BA O3 1 Baader O-III filter - dielectric coating - for 1.25" eyepieces - with storage case 69.-
BA O3 2 Baader O-III filter - dielectric coating - for 2" eyepieces - with storage case 108.-

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Contrast Enhancing Filters for Moon and Planets


skyglow.JPG (4771 Byte)
Skyglow Filter Neodymium

The Baader Skyglow filter is a universal contrast filter for all objects within our solar system. It enhances contrast of all reddish details (for example the famous Great Red Spot on Jupiter), as well as of blue details (like some surface and atmospheric details on Mars). A positive feature is that the image retains its natural colours in contrast to regular colour filters.

You can also use the filter on the deep sky, contrast is enhanced a little in bright planetary nebulae or other nebulous objects, like for instance the Great Orion Nebula.

Obviously the Skyglow filter can also be used for astro-imaging for a general boost in contrast.

Now the Skyglow filter has been revised and features many advancements over the older version. A specially hard glass is used for the filter and the filter's surface is covered with a 7-layer multicoating. This makes the filter scratch-proof and age-resistant. Optical surfaces are absolutely parallel to each other and precisely polished to tight tolerances.

Art. No. Short description Price - Euro incl. VAT
Skyglow 1 1.25" Skyglow BG20 filter with filter threads on both sides 39.-
Skyglow 2 2" Skyglow BG20 filter with filter threads on both sides
2" version - suited for astro-imaging
72.-

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Baader - UV / Venus filter
The image shows the discontinued 1.25" filter. Now available only in 2"

below: spectral transmission curve

2" Filter for Venus Imaging

Cloud structures in the atmosphere of Venus are difficult to capture with amateur instruments. Many amateurs believe that only very large aperture specialized instruments can show these structures at all.

The main problem is filtering, though. By combining several colour and interference filters contrast gains are possible, but the cloud structures remain hidden anyway because of long wavelength light (beyond 400nm) that is permitted through the filters.

The Baader-Venus filter only permits those wavelengths that make cloud structures in the atmosphere of Venus become discernible - Ultra-Violet light (UV).

This allows capturing Venus in UV light. Cloud structures become available even in relatively small instruments. Any distracting light is not permitted through the filter. This means the end to no-contrast Venus images.

The image to the right was captured by Mr.Rietze (Baader Planetarium) only two days before the Venus transit.

The filter is precisely polished, the glass plate is Schott UG-11. A 20 layer dielectric coating is applied to the glass plate.

Item No. Short description Price - Euros incl. VAT
BA UV 2 Venus / UV Filter - 2" 225.-

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IR Pass Filter


Image of Mars captured with a webcam using the IR Pass filter.

IR Pass Filter - Contrast Enhancing Filter for Lunar and Planetary Imaging as well as other uses

The Baader IR Pass filter blocks nearly the total visible spectrum. At 685 Nanometers (beyond the red part of the spectrum) 50% of light passes through the filter. Beyond that transmissioin is higher. In order to be able to find focus with your eyes the light transmission begins at the still visible 685nm, offering a dark red image.

The IR Pass filter reduces seeing effects
The negative influence of seeing (turbulences) isn't as prominent at longer wavelengths. As a result you get very high contrasts and an astonishing sharpness by stacking several images (e.g. using Giotto) captured with the IR Pass filter.

Using the IR Pass filter on the Deep-Sky
This is another field of use for this filter. Many amateurs experiment with deep sky imaging, trying to make structures in the IR part of the spectrum visible.

Item No. Short description Price - Euros incl. VAT
BA IRP 1 IR Pass filter - 685nm and beyond - 1.25" 49.-
BA IRP 2 IR Pass filter - 685nm and beyond - 2" 84.-

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Secondary Spectrum Reduction / Contrast Boosting Filters For Fraunhofer (Achromatic) Refractors


FringeKiller.jpg (9887 Byte) Fringe Killer
Reduces False Colour and Enhances Contrast on Achromatic Refractors up to 5" Aperture

This filter is an improved Minus Violet filter. It has a transmission of about 50% for blue light in order to reduce the yellow hue that is a side-effect of other filters.

In contrast to simple filters the glass of the Fringe Killer is precisely polished to tight tolerances. They are hard coated - you can easily clean them. With the hard coating the filters are among the most age- and scratch-resistant filters available.

Furthermore, an IR and UV cut filter is integrated into the Fringe Killer. This makes the filter suited for digital imaging without compromises.

Art. No. Short description Price - Euro incl. VAT
Fringe 1 Filter for reduction of false colour in achromatic refractors and for enhancing contrast in all telescopes - 1.25" 48.-
Fringe 2 Filter for reduction of false colour in achromatic refractors and for enhancing contrast in all telescopes - 2" 78.-

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Kontrastbooster.jpg (6773 Byte) Contrast Booster - Reduces False Colour in Fraunhofer Achromats of 5" and Larger

A truly unique filter for manifold purposes - vastly increased sharpness in comparison to combinations of classical filters of regularly polished coloured glass, where all optical imperfections add up to destroy the image quality of even the best telescope! For entry-level telescopes this filter is an excellent replacement for the basic green moon filter of regularly polished glass, as well as for solar observations (only in conjunction with the Baader AstroSolar filter sheets!)

Baader Kontrast-Booster for achromatic refractors and for enhancing contrast in all reflecting telescopes.

Properties:

- effectively eliminates false colour of common air-spaced doublet (Fraunhofer) refractor telescopes - recommended from 5" aperture upwards. For smaller refractors we recommend the Fringe Killer
- removes the blue fringe (and resulting loss of contrast) in lunar, planetary, solar and terrestrial observations!
- eliminates the very prominent blue halo in digital images
- surface details on Jupiter and Mars become more prominent! If you so far have never seen the Great Red Spot on Jupiter, with this filter you will be able to see it!
- over 95% light transmission. When compared to dark green filters otherwise used for enhancing contrast on Jupiter you will notice a much brighter and more brilliant, true colour image!
- wonderful moon filter for entry-level telescopes. The Moon (and the sun) appear more natural (in a slightly yellow hue) than in classical, dark green moon filters often sold with small telescopes. You will notice that never before you have seen such sharp images of the moon or the sun (only in conjunction with the AstroSolar filter sheet!) in any beginners' telescope.
- blocks atmospheric stray light (skyglow), dims the sky background
- fits all standard filter threads; can be combined for instance with the precisely polished Baader Infrared Cut filter, with which you can eliminate the loss in contrast through unfocused infrared light - a must-have for digital imaging!
- precisely polished to tight tolerances; can be used far away from focus (as with binoviewers or afocal projectives for digital cameras) without any loss of image sharpness.
- no image breakdown above 150x as with regularly polished filters
- substrate: neodymium doped colour glass
- coating (back side): 7-layer hard multicoating
coating (front side): 23-layer ion-beam longpass-blockcoating
- hard, scratch-resistant, age-resistant coating on both sides. The filter can be cleaned as often as you like!

Never before has anyone gone through such lengths in the production of such a low-cost filter which will enhance image sharpness - especially in entry-level telescopes - drastically!

Art. No. Short description Price - Euro incl. VAT
Contrast Booster
1.25"
Contrast booster as described above - universal contrast filter for all telescopes - 1.25" 49.-
Contrast Booster
2"
Contrast booster as described above - universal contrast filter for all telescopes - 2" 79.-

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Semi APO Filter - Efficient Reduction of the False Colour

This filter drastically reduces false colour in achromatic refractors without the otherwise common yellow hue of the entire image.


  The Semi APO filter is a brand new addition to the Baader filter range. We tested it at our Open House with excellent results.

How It Works
By precisely cutting off those regions of the spectrum in which false colour of refractor telescopes dominates the negative influence of this false colour is minimized, resulting in better contrast and image sharpness.

What sets it apart from the Fringe Killer, Contrast Booster, Violet Reduction Filter, ...
All of these filters have the same basic function and work on the same principle. They reduce false colour visible in achromatic refractors. Unlike the Semi APO filter they cause a strong yellow hue over the entire image - white stars will become yellow. This is in some cases a positive side effect, in particular when viewing the planets.

The Semi APO filter colours the image much less. The image gets a little bit "warmer" and has a slight greenish-yellow hue, but much less prominent than in most other filters. Transmission is better than in typical violet reduction filters. This makes the filter suitable for deep-sky, e.g. for double stars.

We recommend the Semi APO filter as an addition to the Fringe Killer or Contrast Booser, or as a replacement for a violet reduction filter. It offers a more neutral image colour.

Which telescopes is the Semi APO filter recommended for?
The Semi APO filter is suited for all refractor telescope with a discernable secondary spectrum (false colour). It has the greatest effect in short tube refractors that are known for their prominent false colour. Even in ED refractors you will typically get a better image quality on bright objects.
 

Item No. Short description Price - Euros incl. VAT
BA SA 1 Semi Apo filter for 1.25" eyepieces 75.-
BA SA 2 Semi Apo filter for 2" eyepieces 125.-

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CCD (LRGB) Filters, Colour Filters, Neutral (Grey) Filters


IRSperr.jpg (2210 Byte) Infrared & UV Cut Filter 1.25" and 2"

Excellent filter for cutting off the infrared and ultraviolet part of the spectrum. The filter has a 1.25" filter thread on both sides for combination with other filters. The surfaces are precisely polished to tight tolerances. They have a dielectrical coating to make the filter age- and scratch-resistant.

Combined with the red colour filter (Schott RG 610 - 25 Euro) red contrasts can be raised by 500% on the CCD chip. With this combination you can take excellent images of H-II regions.

Recommended Use:
CCD Chips are sensitive to UV and IR. Telescope objectives and other lenses are not well corrected beyond the visible spectrum. Without an IR/UV cut filter the contrast of the images would suffer. Whenever there is any glass between the object and the camera you should use the IR/UV cut filter!

Art. No. Short description Price - Euro incl. VAT
BA IR 1 Baader Infrared / Ultraviolet cut filter - 1.25" - dielectric coating 45.-
TS IR 1 TS Infrared / Ultraviolet cut filter - 1.25" - dielectric coating 33.-
BA IR 2 Baader Infrared / Ultraviolet cut filter - 2" - dielectric coating 76.-

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left: Baader IR cut filter - right: original Canon filter

Infrared & UV Cut Filter for Canon EOS Cameras

Canon Digital SLR cameras are amongst the most popular cameras for astro-imaging. They do not require a computer nearby, are very sensitive and have a very high resolution. Many of today's most beautiful astroimages were taken with such cameras.

The cameras do have one drawback for astro-imaging, though. The original IR cut filter installed by Canon has only a very bad transmission in the important red H-Alpha line. Many gas nebulae with H-2 regions are consequently difficult to photograph with a standard camera.

Baader has created an IR cut filter that will fit directly into Canon's halfsize chip cameras. The filter has nearly full transmission in the H-Alpha line. This eliminates the cameras' only major disadvantage.

The filter is made so that the autofocus mechanism of your camera will continue to work without problems. You just need to manually adjust the white balance of the camera if you wish to continue to use it for normal photography also.

We offer the Baader IR cut filter separately to customers with advanced mechanical and electronical knowledge. The process of refitting the camera with a different filter requires much caution and care and we do recommend to do it only if you have a clear idea of what you are doing!

Alternatively we offer the current Canon DSLR cameras with Baader IR cut filter already installed.



Comparison between the Baader filter (in blue) and the original Canon filter. Note the extreme difference in the red part of the spectrum, between 600 and 700nm!

Item No. Short description Price - Euros incl. VAT
BA IR EOS Baader IR / UV cut filter for Canon EOS 300 D 75.-
BA IR 350 Baader IR / UV cut filter for Canon EOS 350 D & 20 D 85.-
BA IR 5D Baader IR / UV cut filter for Canon EOS 5 D 95.-
Until now no filter is available for the EOS 400 D.

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CCD Colour Filter Set Including IR Cut Filter (LRGB)

LRGB filters are used for taking colour images with a monochrome CCD camera such as the ATiK cameras. The filter set consists of four filter: RG610 - red / light blue / light green as well as the Baader IR cut filter. The filters have the standard 1.25" filter thread.

We recommend to use the ATiK filter wheel for convenient switching of filters.

Item No. Short description Price - Euros incl. VAT
BA CCD Fi 1 CCD colour filter set consisting of 3 colour filters (red, green, blue) and the Baader IR cut filter 86.-

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Farbfilterset.JPG (8887 Byte) Colour Filters and Colour Filter Kit (6 Filters)

These filters are designed with the specific needs of amateur astronomers in mind. They are precisely polished and coated on both sides. As a result you can also use the filters at a larger distance from the eyepiece, e.g. with a filter wheel or a binocular viewer, where normal colour filters often fail to offer a good image quality.

According to our own tests we believe that these filters are among the best available. They have the standard 1.25" or 2" filter thread on both sides, allowing you to combine them for additional flexibility. The included spectral transmission curve allows you to precisely match the filters for your particular needs.

Item No. Short description Price - Euros incl. VAT
BA 2458301 1.25" Light yellow (GG495) 25.-
BA 2458302 1.25" Dark blue (BG25/435nm) 25.-
BA 2458303 1.25" Light blue (BG14/470nm) 25.-
BA 2458304 1.25" Green (VG6/500nm) 25.-
BA 2458306 1.25" Orange (GG570) 25.-
BA 2458307 1.25" Red (RG 610) 25.-
BA 2458300 Filter Kit consisting of all six 1.25" Baader colour filters 120.-

Item No. Short description Price - Euros incl. VAT
BA 2458311 2" Light yellow (GG495) 36.-
BA 2458312 2" Dark blue (BG25/435nm) 36.-
BA 2458313 2" Light blue (BG14/470nm) 36.-
BA 2458314 2" Green (VG6/500nm) 36.-
BA 2458316 2" Orange (GG570) 36.-
BA 2458317 2" Red (RG 610) 36.-
BA 2458310 Filter Kit consisting of all six 2" Baader colour filters