Astronomik L-3 UV+IR Blocking Luminance Filter

Astronomik L-3 UV+IR Blocking Luminance Filter
  Zoom
£62.00
Choose












:  

In stock - Shipped 1-2 working days.

Model:  ak_uv-ir_l-3_125
Part Number:  8H00PB
Brand:  Astronomik

Astronomik

Astronomik offers you a range of three different UV+IR blockers as Luminance filters. The different spectral window of each new Luminance filters is designed to tune your setup to get the sharpest image from any optical design and any camera

The Luminance channel is probably the most important for a great final image! You want as much signal as possible so the filter should have the highest transmission possible with a wide spectral bandpass. This combination provides the greatest sensitivity and gives you the highest photon counts on your pixels.

While the high transmission level is a great aspect of the new Astronomik Luminance filters, not all optical instruments or additional optical elements like correctors, field-flatteners or reducers, have perfect colour correction so it can be the width of the spectral band pass of  the Luminance filter that can cause problems.

A band pass that is too wide will allow the transmission of incompletely focused light (Chromatic aberration), making stars appear soft or bloated. In such cases image processing can become difficult, so having a slightly narrowed spectral window in your Luminance filter can reduce or eliminate this damaging effect.

If you use an optical system that is completely free of any chromatic aberration you should get an L1 filter for your setup. For general use the L2 filter is well suited to most optical systems with a corrector, flattener or reducer in the optical train while the L3 filter is designed for users of refractors with a less-than-perfect colour correction and in combination with the new Deep-Sky RGB filters, the L3 filter will minimise the problem of bluish halos around stars.

FEATURES

  • Free of halos and reflections
  • Not sensitive to high humidity or ageing effects
  • Scratch-resistant!
  • Excellent quality substrate, diffraction limited - the optical performance of your telescope will not be reduced
  • Parfocal with other Astronomik filters
  • 1mm Glass Thickness
  • Supplied in a high-quality, long lasting, filter box

Additional note for observers working under light polluted skies:
If your observing site suffers from light pollution you should try to use our CLS-CCD as a replacement for the Luminance filter. The transmission curve of the CLS-CCD will give you approximately the same amount of energy in all three colour channels while blocking nearly all unwanted arifical light pollution. Customers who replaced the Lx filter with the CLS-CCD are amazed by the increased quality of their data. This small change gives you the opportunity to take much deeper images from your current observing site.

Transmission Chart

 

There are currently no specifications available for this product.

Astronomik L-3 UV+IR Blocking Luminance Filter Questions & Answers

Please fill in the form below to ask a question.

*
Your Name
*
Your Email Address
*
Your Question

Be the first to Write a Review for this item!

Customer Services Report
June 2018 / View Older
Positive Feedback read all 5,221 comments
Enquiries Responded to within 6 working hours
Orders Completed within 2 working days