IDAS P2 LPS Light Pollution Filter

The Japanese-made IDAS P2 LPS is in our opinion the BEST Light Pollution Suppression filter for astro photography with DSLR, colour and mono CCD cameras.

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.

IDAS D1 LPS Light Pollution Filter

The Hutech IDAS D1 LPS is in our opinion the BEST Light Pollution
Suppression filter for astro photography with DSLR and colour CCD cameras.

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.

Hutech 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.

Note, however, that light pollution suppression filters are not a
perfect substitute for dark skies.

LPS filters are available in 1.25" and 2" threaded cells, other sizes
are available on request.

£149.00

Skywatcher 1.25" LRGB Filter Set

Designed for CCD astrophotography, the set includes Luminance-IR, Red, Green, and Blue CCD filters. The filters are resistant to humidity and scratching and set into a durable aluminium alloy threaded mounting ring. The red green and blue filters have been developed to closely match the natural colours of stars, planets and emission nebulae, whilst the luminance filter removes damaging haze and ultraviolet. The filters offer light transmission of nearly 100%. Please note the red, green and blue filters are not IR coated.

Skywatcher Variable Polarising Filter

These high quality anodized aluminium, optical glass variable polarising filters reduce the amount of light entering your eyepiece. You can progressively dim the view when observing a bright object, such as the Moon or certain planets, to a level according to your needs, whilst increasing contrast, reducing glare and increasing the amount of detail that can be studied. The light transmission can be varied from 40% down to as little as 1%. The filter will not change the colour of the object being viewed and will prevent eye fatigue and loss of night vision. Each filter set consists of two polarizing filters, one which can be rotated in its cell to adjust the brightness. The filters, used as single elements, can also be used for daytime terrestrial use for reducing sunlight glare from lakes oceans or window glass. Available in two sizes, threaded to fit either standard 1.25 or 2 astronomical eyepieces. Supplied with storage case.