Jacobs Digital

09 480 5903

www.jacobsdigital.co.nz

9 Mokoia Road

Birkenhead, Auckland 0626

OPEN: 9am to 5pm

Monday to Saturday

Celestron Light Pollution Imaging Filter, RASA 8

SKU: 93614

Celestron Light Pollution Imaging Filter, RASA 8 - Jacobs Digital
Celestron Light Pollution Imaging Filter, RASA 8 - Jacobs Digital
Celestron Light Pollution Imaging Filter, RASA 8 - Jacobs Digital
Celestron Light Pollution Imaging Filter, RASA 8 - Jacobs Digital

Our Price

$699.99

$699.99

Green truck Usually ships in 4-8 weeks An order for this can be placed with our supplier, and usually ships within the specified timeframe.



Loading

60

69999

Shipping Quote

When will I receive it?

About this product

Light pollution in the night sky can significantly degrade contrast in astronomical images. This is especially true when using very fast telescopes like the 8” RASA because the sky background saturates very quickly. The “noise” of the light pollution overwhelms the “signal” from the celestial object you are imaging, making it difficult to get the most detailed image. The Light Pollution Imaging Filter for the 8” RASA remedies this by blocking light pollution while transmitting light from deep-sky objects. The result is bright, detailed objects that pop off the black sky background with superior contrast.

 

8" RASA Light Pollution Filter Manual

 

GENERAL
Material: Schott B270
Glass thickness: 1.9mm (0.07")
Filter diameter: 46mm (1.81")
Clear aperture: 43mm (1.69")
Coatings: Dichroic, multi-layer anti-reflection
Housing: Aluminum, black anodized

 

Fortunately, many sources of light pollution have relatively discreet emission spectra; they emit primarily at specific wavelengths of light. By strategically blocking these wavelengths, the filter greatly reduces the effects of light pollution without degrading overall image quality.

The Light Pollution Imaging (LPI) Filter for the 8” RASA blocks light from some of the most common sources of light pollution between 400-700nm (i.e., the visible spectrum), including high- and low-pressure sodium-vapor streetlights, mercury-vapor streetlights, and natural airglow caused by oxygen in the atmosphere. Unlike some light pollution filters, the LPI filter blocks only specific areas of the spectrum instead of wide regions. This helps to maintain image brightness and color balance. In addition, specific wavelengths associated with emission nebulae, such as H-α(656nm), H-β (486nm), OIII (496nm and 501nm), and SII (672nm), are highly transmitted, ensuring minimal loss of image brightness for those objects.

The filter fits directly into the internal filter mount in the RASA 8’s front lens cell, where the optical window normally mounts. By removing the clear window and replacing it with the filter, optical performance for the entire system is maintained.

Each filter comes with a plastic storage case to safely store the filter or the placehold

Contact us

Customer Reviews

Recently viewed products

This website uses cookies

Our Privacy Policy