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Please note: Green Witch North (Birstall) will be closed from 12pm-5pm Friday 18th May due to stock take.

Moon Filter 1.25Moon Filter 1.25 Ref: OV-405
  • OPTICAL VISION

Fits most 1.25-inch eyepieces. Takes the glare of the Moon away making it more comfortable to view and making it easier to see detail.


Price: £10.00 (Including VAT at 20%)



1.251.25" Lunar/Planetary Filter Set Ref: OV-20202
  • OPTICAL VISION

Contains four high-quality glass colour filters. Yellow, Red, Green & Moon/Neutral Density Filters included.

These filters will fit most internally-threaded eyepiece barrels of 1.25"/31.7mm format.

Supplied in attractive foam-lined plastic screw top storage case.



Price: £29.99 (Including VAT at 20%)



OIII Narrowband Filter (1.25OIII Narrowband Filter (1.25") Ref: OV-194
  • OPTICAL VISION

Narrowband filter suitable for gas clouds and nebulae which emit strongly at oxygen III wavelengths. Supresses the sky background whilst letting through the OIII light.

1.25" version


Price: £43.00 (Including VAT at 20%)



OIII Narrowband Filter (2")
Ref: OV-196
Price: £70.00 (Including VAT at 20%)



  • OPTICAL VISION

2" version of the OIII filter above

Light Pollution Reduction Filter (1.25Light Pollution Reduction Filter (1.25") Ref: OV-198
  • OPTICAL VISION

This glass filter cuts out much of the pollution caused by street lights whilst letting through the light commonly emitted by nebulae. Its effect is to darken the sky background and make the nebulae stand out better. An inexensive alternative to a narrowband filter.

1.25" version


Price: £19.99 (Including VAT at 20%)



Light Pollution Reduction Filter (2")
Ref: OV-199
Price: £29.99 (Including VAT at 20%)



  • OPTICAL VISION

2" version of the light pollution reduction filter above.

Variable Polarising Filters (1.25Variable Polarising Filters (1.25") Ref: OV-200
  • OPTICAL VISION

This is a pair of polarising filters that can be rotated to provide different levels of transmission. In effect they act like a brightness control enabling you to set the comfort level when viewing bright objects such as the Moon and bright planets.

1.25" version


Price: £29.99 (Including VAT at 20%)



Variable Polarising Filters (2")
Ref: OV-201
Price: £40.00 (Including VAT at 20%)



  • OPTICAL VISION

2" version of the variable polarising filters above.

UHC Nebula Filter (1.25UHC Nebula Filter (1.25") Ref: OV-195
  • OPTICAL VISION

This Ultra-High Contrast glass filter lets OIII, H-alpha and H-beta light pass whilst suppressing light pollution and sky background. It is the best all-round nebula filter and will improve the greatest number of objects.

1.25" version


Price: £43.00 (Including VAT at 20%)



UHC Nebula Filter (2")
Ref: OV-197
Price: £70.00 (Including VAT at 20%)



  • OPTICAL VISION

2" version of the UHC filter above.

TAL Filter SetTAL Filter Set Ref: OV-572
  • OPTICAL VISION

A set of five light filters including Red, Green, Blue, Yellow and Neutral Grey (Lunar). These filters will screw-in to most eyepieces of 1.25"/31.7mm format with internally threaded barrels.


Price: £49.99 (Including VAT at 20%)



TAL 2TAL 2" Filter Set Ref: OV-994
  • OPTICAL VISION

A set of seven light filters including Yellow, Orange, Light Red, Light Green, Light Blue, Polarising Filter, Moon/Skyglow Filter. These filters will screw into most eyepiece barrels of 2"/50.8mm format.


Price: £79.99 (Including VAT at 20%)



Please note: Green Witch North (Birstall) will be closed from 12pm-5pm Friday 18th May due to stock take.