BTW, getting back to "equipment", I checked a low cost unbranded 2" UHC filter I bought a few weeks ago from a vendor on Aliexpress. Although the vendor website had the word "Svbony" in the description, I seriously doubt it had anything to do with it unless these were Sybony rejects. I mean the performance of it was absolute poop, beyond absolute poop to be exact, and, needless to say, I already have the return label printed out from Aliexpress and the item ships back to Aliexpress tomorrow.
I have a couple of the Svbony-labed 1.25" UHCs, and even though they are a board band version of a UHC, they do provide a reasonable level of improvement in my 12" and 16" dobs and I use 'em for viewing certain responsive emission nebulae and some galaxies from my moderately light polluted home.
What I got from the 2" unbranded UHC was essentially an illuminated field of illumination! I mean it was bad! I popped in a decades-old Orion Ultrablock that I had handy at the time just to make sure I was on the target, NGC 2022, a relatively bright planetary nebulae at magnitude 11.9 in Orion, and it was cleary in the field of view and invisible in the unbranded UHC.
This is the second bad experience I've had with an unbranded filter from a vendor on Aliexpress and, based on my experiences, I would recommend avoiding unbranded UHC/0111 filters.
Additionally, the easiest way to get the return label and a refund back to your card is to click on the "no longer needed" option in the return process that negates the need to download an image/provide proof of defect and/or send a message to the seller.
Using the "no longer needed" option gets you the return label within a half hour or much less.