Whoa. Just realized that Steve Gottlieb, Howard Banich, Jimi Lowrey and I looked at this galaxy last year through Jimi's 48", during Texas Star Party 2022 (although I did not go to the field). Specifically, we were looking for the super star cluster denoted "SSC-A", perhaps Steve (who I think picked this object) will enlighten us some more. Here is my sketch:

NGC5253.jpg

I don't think anyone tried a narrowband filter.