IC443
Celestron RASA 8", F=400mm F/2.2
A test of "what happens if there's no filter at all?" — and here's the answer. It's a mess due to halos.
Interestingly, I then went looking for an anti-light pollution filter with a built-in UV/IR cut that would be suitable for fast systems.
And I didn't find one. There are triband or quad band filters.
Also, you can see here how bad a large APS-C sensor is on the RASA 8" (seems not too bad, though it was promised to be worse).
I deliberately didn't stretch this frame — there's nothing to enhance. This is a technical test of "what happens if..."
Comments
The Player One Poseidon‑C Pro camera doesn't have a built-in UV-IR cut filter.
This is an example of "how not to do it" and what happens if you shoot without any filters at all, even without a UV/IR cut (which, seemingly, is almost useless).
Kept it as a keepsake.
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