Astronomy Specialist

OPTOLONG POLARIZING MOON FILTER

$42.00 USD
SKU: OP-12501

Optolong


Size

 

Neutral density variable polarising filters are the best solution to manually adjust the brightness of the observed object maintaining its original colour.

This filter is an assembly of two separate glasses that can be rotated to adjust the light transmission between 1% and 40%. This is particularly useful to reduce the glare and the brightness of the Moon, especially at low magnification when the Moon appears too bright. 

The filters are glass filters and the cell is made of anodised aluminium for high durability.

This filter can be screwed onto any standard 2" eyepiece (M48 x 0.75).


Do not use this filter for solar observations.

 

 

Filter type Neutral density polarising filter

Diameter

1.25", 2"

Filter connection

Male M28.5 x 0.6 (standard 1.25" eyepiece thread)

Transmission
Between 1% and 40%

OPTOLONG POLARIZING MOON FILTER.

OPTOLONG POLARIZING MOON FILTER

From $42.00 USD

Size

  • 1.25"
  • 2"

Optical design

Image circle

Focal ratio

Aperture

Focal length

Optical thickness

Threads

Cooled

Colour or Mono

Pixel size

Sensor dimensions

Resolution

Sensor diagonal

Quantum efficiency

Read noise

Fullwell capacity

Bit depth

FPS

Camera backfocus

Filter size

1.25", 2"

Filter size

1.25", 2"

Bandpass (FWHM)

Bandpass (FWHM)

Glass thickness

2 mm

Mount type

Payload capacity

Latitude range

Dovetail saddle

Slew speed

Encoders

Periodic error correction

Counterweight shaft

Azimuth adjustment range

Internal diameter

Illuminated diameter

Compatible telescope external diameter

Weight

Length

Width

Height

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