Substitute L with L-Pro

[MarkInSpace (Mark)]

I'm interested in peoples thoughts on substituting my L filter with and Optolong L-Pro. Is there a downside?

[Nikolas (Nik)]

No

[MarkInSpace (Mark)]

Reasons, please!
This is with a mono camera -ASI2600MM.

[Nikolas (Nik)]

it's a light pollution filter that tightens star bloat and reduces gradients without affecting image quality. So as a luminance filter it works extremely well

[ChrisV (Chris)]

I don't see the point of doing it with a mono camera. If you do so, you won't be able to separately process and colourise H and O.

The point of the dual band filters is to use them with colour cameras. Then you can split out HO on the red v blue-green pixels for individual processing etc

Better off getting separate narrowband filters for the mono

[Nikolas (Nik)]

Originally Posted by ChrisV

I don't see the point of doing it with a mono camera. If you do so, you won't be able to separately process and colourise H and O.

The point of the dual band filters is to use them with colour cameras. Then you can split out HO on the red v blue-green pixels for individual processing etc

Better off getting separate narrowband filters for the mono

the L-Pro is not a dual band filter it's a pollution filter so you can use it as a luminance filter

[MarkInSpace (Mark)]

The l-pro spectrum covers visible light (from about 400nm to 700nm) with notches cut in for key light pollution sources (eg Mercury vapor lamps etc...)
IMO, the potential problem with l-pro would seem to be that these notches prevent a smooth transition of wavelength across the spectrum.
Is that important in a light pollution environment? I don't know, hence the query.

[Nikolas (Nik)]

Originally Posted by MarkInSpace

The l-pro spectrum covers visible light (from about 400nm to 700nm) with notches cut in for key light pollution sources (eg Mercury vapor lamps etc...)
IMO, the potential problem with l-pro would seem to be that these notches prevent a smooth transition of wavelength across the spectrum.
Is that important in a light pollution environment? I don't know, hence the query.

It helps with gradients more than anything else.
Gradients are horrible in light polluted areas.