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Filters > Planetary & Comet Filters > Astrodon > Astrodon Filters UV venus filter 1,25"
Product no.: 14692

Filters UV venus filter 1,25"

$ 391.00 incl. VAT plus shipping costs
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Product description

Astrodon introduces a breakthrough in UV filters for CCD imaging. A durable, hard-coated UV filter of the highest quality having the best transmission available.

The Astrodon-Schuler UV filter has traditionally been used for imaging Venus. It is made from several colored glasses, but only transmits ~ 65% of incoming UV light in the 300 - 400 nm region.

Another vendor recently discontinued a 1.25" mounted UV filter due to NIR light leakage, but offers a 2" unmounted version that only reaches 80%T. Astrodon offers you both sizes and higher performance.

Like our highest quality Generation2 Astrodon LRGB filters, the UVenus filter eliminates halos around bright stars by having the bandpass coating on one side, and a superior broadband, anti-reflective A/R) coating on the other.

Astrodon UVenus filters are guaranteed to achieve >90% transmission. The actual scan below has an average transmittance of 98.2% from 325 - 381 nm, while minimizing out-of-band light leakage. This outstanding performance saves you time when imaging weak UV signals, while providing high contrast due to low light-leakage.

You do not need a separate filter to block the NIR with the UVenus filter.

Specifications

  • 1.25" mounted and 49.7 mm diameter unmounted
  • 3.000+/-0.025 mm substrate thickness
  • Single, striae-free fused silica substrate
  • 1/4 wave substrate prior to coating
  • < 0.5 arcminute parallelism before coating
  • Hard coated to edge
  • Guaranteed to > 90%T peak transmission (>94% typical)
  • <0.01%T 285-305 nm; <0.1%T 420 - 1100 nm


WARNING!
This filter is NOT to be used for visual observations, specifically the sun or UV light sources.

Specifications

Capacity


Coating of optical system
multiple
Mount material
Aluminium
Connection (to the telescope)
1,25"
Frame
1,25"

General


Type
Filters
Type of build
Planetary & Comet Filters

Area of application


Useful for photographs
yes
Venus
yes
Visually useful
-

Product safety

Manufacturer:

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*All prices include VAT plus shipping costs.

Astrodon Filters UV venus filter 1,25"
Astrodon Filters UV venus filter 1,25"
Astrodon Filters UV venus filter 1,25"

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