Baader filters

Baader DSLR Coversion filters - from £45.00

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.

The cameras do have one drawback for astro-imaging, though. The original IR cut filter installed has poor 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 have made an IR cut filter that replaces the standard Canon filter. The filter has nearly full transmission in the H-Alpha line. This eliminates the cameras' only major disadvantage.

Baader Neodymium Filter - from £34.00

The Neodymium filter is a contrast filter for all objects within our solar system. It enhances contrast of 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). Also absorbs light pollution from low pressure Sodium lighting.

Baader H-alpha CCD filter - from £56.00

H alpha filter for narrowband imaging. Available as a 35nm or 7nm bandpass

Baader H-beta Filter - from £68.00

H-beta filter for narrowband imaging. 8.5nm Passband

Baader OIII 8.5nm CCD Filter - from £77.00

OIII CCD filter for narrowband imaging.

Baader Visual OIII Filter - from £56.00

Visual OIII filter

Baader SII 8nm CCD Filter - from £78.00

SII filter for narrowband imaging.

Baader UHC-S Filter - from £48.00

Midway between the Astronomik CLS and UHC in terms of bandpass, this filter is best used visually by owners of smaller telescopes (8" or less) for nebular observation or for general observation in areas of high light pollution. Owners of larger scopes and imagers will get better results with the Astronomik UHC.

Baader Visual & Photographic AstroSolar Filter Material - from £18.00

High density coatings on both sides of a specially manufactured foil reduce the intensity of sunlight by up to 99.999%. The sun's image is extremely contrasty and white,

Size of the ND5 visual film is 20 x 29.5cm, the ND3.8 photographic film is approx 25cm square.

Baader Solar Continuum Filter - £48.00

A unique filter, transmitting a narrow 10nm bandpass around the 540nm region. Enhances granulation and penumbral contrast for both visual and imaging purposes giving razor sharp images. Reduces the effects of atmospheric turbulence and is especially good for achromatic refractors. The use of a primary solar filter is also required ie AstroSolar film.

Baader Calcium K-Line Filter (1.25") - £196.00

Use the new Baader Planetarium Calcium K-Line Filter to image the sun in K-Line with any telescope. Baader's double-stacked filter uses sophisticated coatings to produce a sharp 8nm wide bandpass, centered at 395nm. This bandpass provides ample contrast for high-resolution imaging of super granulation, flares, and other features that are prominent in CaK. Unlike small, dedicated, and expensive CaK telescopes, the Baader K-Line filter works with your existing telescope at a fraction of the cost. The Baader CaK may be used with virtually any telescope, of any aperture - Newtonian, SCT or Refractor. A 200mm x 290mm (8" x 11") sheet of Baader AstroSolar Photo Film (ND=3.8) is provided with each filter.

CCD RGB Filter-Set 1¼" for beginners (3 Colour Filters + IR Cut Filter) - £75.00

Used for making colour composites with a monochrome CCD camera. These are simple, but high quality, plain glass filters suitable for the beginner or enthusiast on a budget. The IR block filter must always be used in combination with the colour filters as the individual colour filters are not IR blocking.

Baader (L)RGB(C) CCD Filter Sets - from £168.00

New RGB CCD filter sets from Baader, available in many combinations, all filters are parfocal and complement the existing Narrowband filters.

Johannes Schedler of the Pather Observatory has been testing these for Baader and has had some promising results
http://panther-observatory.com/Baader_LRGB.htm

Baader Contrast booster - from £40.00

For users of Achromatic telescopes this filter enhances contrast, making brighter objects appear sharper and more clear. It does this by reducing the violet & blue secondary spectrum that is that is often seen with achromats. This filter is a good choice for those who using larger/faster achromats and also reduces the effects of Sodium light pollution. Another use is for the observation of the Planets, particularly Jupiter and Mars.

Select 1.25" or 2" Baader Contrast booster (1.25") - £40.00 Baader Contrast booster (2") - £63.00

Baader UV/IR Block Filter - from £37.00

Excellent filter for cutting off the infrared and ultraviolet part of the spectrum. Pass band is 420nm-680nm

Baader U (Venus filter) from £149.00

The Baader U (Venus) Filter enables amateurs to successfully image in the deep UV from 300nm to 400nm. The filter has a peak transmission of 80% and completely blocks the rest of the spectrum from 200nm to 1500nm. Used to record cloud structures on Venus, the Solar Calcium K-Line is also within the passband of this filter.

The Baader U Filter is now the filter of choice for imagers exploring the UV world of Astro, landscape, floral, and even forensic imaging.  The latest filter has even higher transmission and improved out of band (IR) blocking and consists of a 20 layer dielectric coating stack on a special optically polished UG-11 substrate. 

The human eye is nearly insensitive to UV, but can be damaged by it. We recommend imaging using at least a 5" to 8" aperture scope (depending on camera sensor type) for good results.

Baader IR-Pass Filter (685nm) - from £42.00

This filter blocks wavelengths below 685 nm. At longer wavelengths, planetary images are less disturbed by wavefront distortions in the atmosphere (seeing). By combining a luminance image taken with the IR-Pass filter, along with RGB frames, overall image sharpness is significantly enhanced. Some of the world's best amateur planetary images have been taken with this technique. Even more effective IR pass filters are made by Astronomik.

Baader Fringe Killer Filter - from £39.00

This filter is a high transmission UV/IR block filter which also removes violet and some blue light. Perfect for visual use with the smaller fast achromatic refractors and especially useful for imaging with them. Makes the images from a cheap 80mm F5 achromat look considerably more expensive! Works well in combination with the Astronomik CLS filter and also the Baader longpass Red.

Baader Semi APO filter - from £60.00

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.

Baader Colour Filters - from £21.00

Colour filters for planetary observation. Available as a set or as individual filters in 1.25" or 2".