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All-Star Telescope is your source for all things astro from telescopes to astrophotography cameras. Have a question? We'd love to help. Email: info@all-startelescope.com Call Us: (587) 336-6621 Toll Free: 1 (866) 310-8844
Have a question? We'd love to help. Email: info@all-startelescope.com Call Us: (587) 336-6621 Toll Free: 1 (866) 310-8844

Optolong IR Pass685 Planetary Filter 1.25" Mounted (OPT-IR685-125)

SKU OPT-IR685-125
Original price $99.95 - Original price $99.95
Original price
$99.95
$99.95 - $99.95
Current price $99.95

Shipping Available to Canada and USA from Edmonton Warehouse.
International shipping available by request. Contact Us

Usually ready in 24 hours

Optolong IR Pass 685nm filter is designed to block wavelengths below 670nm and can be used in IR-LRGB imaging to produce a sharper luminance image for the best planetary contrast as atmospheric seeing and distortion is much reduced at longer IR wavelengths.

Description

The sensor of CCD or CMOS cameras is capable of detecting light in the 350-1100nm range including infrared wavelengths. Thus RGB planetary images taken with IR as the luminance channel have visible-enhanced contrast and surface detail than standard LRGB images.

Spectrum and Characteristic

  • Substrate: B270
  • Thickness: 1.85mm
  • Tave: T>90%
  • Blocking range: 350-1050nm
  • Blocking depth: light pollution line blocking >99%
  • Surface quality: 60/40
  • Transmitted Wavefront RMS: λ/4
  • Parallelism: 30s

Coating Technology

  • Multi-layers anti-reflection coating
  • Non-cementing optical substrate coating
  • Optolong L-Pro filter adopts precision coating based on Ion-assisted deposition coating technology for durability and resistance to scratching, as well as stability on CWL(central wavelength) no deviation affected by temperature change.
  • Planetary rotation system offers precision and homogeneity of coatings ensuring high value on transmission of pass-band and Optical density of off-band.

Warm Prompt

  • About colour: due to the influence of ambient light, colour difference of the display and flash photography, the colour of the product may have some colour difference. Detailed colour is in accordance with the final product.
  • About coating: the interference filter will show different colours under different light, which is a normal phenomenon. Please refer to the material object.
  • About the style: in order to improve the product, the change of design/appearance/parameters has not been updated in time. Please see the subject produce.
  • About the description: the series of this product have the same material, technology and design, different sizes only, please note.

What's in the Box

  • Outer Box: sliver box
  • Plastic Box: PP material
  • Lining: imported high pressure white EVA material