Originally posted by Madaboutpix Hey, quite a few reactions to my original post. Definitely thanks to everyone for contributing and providing perspectives so far.
Not that much love for and some reservations about the somewhat pricey dedicated light pollution filters, it seems. Suggestions regarding cheaper alternatives such as Hoya's Red Enhancer / Intensifier. And now - admittedly after some googling - I even learnt what the Bortle scale refers to ...
I remain curious, though, what Rollei's Astroklar will actually give me in the field and in post. If anything forum-worthy comes of it, I shall be back with images.
We will be waiting for samples!
A lot of filters shows what waves do they filter out, but I did not find for this one filter to compare.
For example, Hoya Red Intensifier:
Pure Night:
Astronomik CLS filter:
Not all filters provide transmission data, but if you check, most of them covers the same wavelength (+-). So this is the reason I went with the cheapest one, Hoya Red Intensifier. But it would be interesting to compare the results side by side. Though it is full moon, I might try taking my own sample shots on Wednesday, they forecast a clear evening and night.
Also, there is an Astrophotography group in Pentaxforums
for like-minded.