"Full" spectrum Filter for Milky Way

[Scream]

If you have a "full" spectrum camera do you need a filter for milky way including landscape? I have a Rokinon/Samyang 14mm f/2.8 Lens, on a Nikon body APS-C. I cannot find anything for clip in aside from the Multispec and nightscape by STC. I don't think this will be any good for what I want and it's quite expensive but I'm weighing my options. I cannot find an APS-C nikon clip in that does UV and IR. I've been trying to find a square filter that I could use on the front. I'm having a hard time trying to find on here in the UK.

[jambouk]

If you are in a dark location, I’d just image and see what you get. 
 

What size filter does the lens take? You’ll be able to find a UV cut filter, and I’d always put even a clear glass filter at the front of all my lenses to keep them clean and to protect them. 

[KP82]

That Samyang 14mm f/2.8 does not support front screw-in filter, so your best bet would probably be this: https://www.wexphotovideo.com/stc-clip-uv-ir-cut-615nm-filter-for-nikon-aps-c-1725795/