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UV-IR cut filter

Posted: Sat May 12, 2018 8:07 pm
by bellavia
Hi,
Does the 183MC and/or the 183MM have a UV-IR cut filter?
I own both (cooled, pro models) and want to know if this might be a reason I am getting halos around stars?
I am also not getting much color with the color version. Perhaps it is getting washed out in UV and IR?
Thanks!
Steve

Re: UV-IR cut filter

Posted: Mon May 14, 2018 8:43 am
by Support@ZWO
No, They both use AR coated protective window.
Protective window won't cause halos.

Re: UV-IR cut filter

Posted: Mon May 14, 2018 2:20 pm
by bellavia
Sean.Wang wrote:No, They both use AR coated protective window.
Protective window won't cause halos.
So the full spectrum of light is allowed in, correct? (Similar to the ASI 224).

If true, this is good news, as a cut filter (or semi-apo filter) will produce sharper stars with less halos, using my 2-element flourite refractor.

Thank you!

Steve

Re: UV-IR cut filter

Posted: Fri May 18, 2018 5:26 am
by Support@ZWO
Yes, it just like 224.