Astronomy Specialist

ANTLIA CH4 METHANE FILTER 1.25"

$269.00
SKU: AN-CH4-1.25

Antlia

  • 20 nm



The Antlia CH4 Methane filter 1.25" is a special bandpass filter designed to capture the finer details and more contrast on planets like Jupiter, Saturn, and more.

The Human eye is not sensitive to light beyond around 700nm, so this is strictly a photographic filter and benefits from cameras with good IR response such as the QHY462C. Given the lesser sensitivity of many cameras to these wavelengths, longer exposure times will be required.

This filter uses the latest dielectric interference coating technology to achieve high transmission in the CH4 band at 889 nm and exceptional cut-off of other wavelengths (OD3).

Each filter is tested individually to ensure a high quality standard. The tight tolerance of the filter substrate assures a maximum deviance of ±0.05 from specifications making these filters parfocal.

DO NOT LOOK AT THE SUN WITH THE ANTLIA FILTERS. Serious eye damage will occur.

Specifications


Passing band 889 nm, 20 nm wide
Glass thickness

2.0 mm ±0.05

Optical flatness

1/4 λ (wavefront)

Surface quality
60/40 (in accordance with US military watch MIL-O-13830)
Parallelism
30"
Glass type
Schott monolithic optical substrate (non glued)

 


ANTLIA CH4 METHANE FILTER 1.25".

ANTLIA CH4 METHANE FILTER 1.25"

$269.00

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"

Filter size

1.25"

Bandpass (FWHM)

20 nm

Bandpass (FWHM)

20 nm

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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