Hutech IDAS LPS-D1 Light Pollution Filter



The HUTECH IDAS LPS-D1 light pollution filter

As discussed in the Light Pollution section, skyglow is a real challenge for the astrophotographer. I recently purchased a light pollution suppression filter and will share some first impressions here.

Picture of the Hutech IDAS LPS-D1 Light Pollution Suppression Filter

The Hutech IDAS LPS-D1 Light Pollution Suppression Filter is quite impressive. According to the description, this filter has been designed to suppress emission lines generated by artificial lighting, yet allow the important nebula emission lines to pass. Below you can see a RAW image of the Orion Nebula taken without any filter:

Orion Nebula RAW image taken without filter (unprocessed picture) – Takahashi FSQ85-EDX, Nikon D800, 323s ISO 1600

Here the picture of Orion Nebula taken with the IDAS LPS-D1 light pollution suppression filter (RAW image, unprocessed):

Orion Nebula RAW image taken with IDAS LPS-D1 filter (unprocessed picture) – Takahashi FSQ85-EDX, Nikon D800, 325s ISO 2500

Other than the filter, I used the exact same equipment. Images were not taken on the same night though. Even when unprocessed, the contrast between the two images is stark. Below you can see the images after processing in Light Room and Photoshop.

Image taken without filter: after processing -Takahashi FSQ85-EDX, Nikon D800, 323s ISO 1600

Here is the image taken with the light pollution filter, after processing. The nebulae on this picture look richer, almost like three dimensional.

Image taken with light pollution filter: after processing – Takahashi FSQ85-EDX, Nikon D800, 325s ISO 2500

Warning: This filter is NOT for solar viewing or photography! For solar viewing, always check that filters meet the requirements for ISO 12312-2:2015.

Disclaimer: I’m not affiliated to Hutech or any other company mentioned on my website.

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