NGC 1491, an emission nebula in Perseus, is also known as LBN 704.
I used a Celestron Edge HD 925 with a 0.7 reducer, an ASI 2600MC Pro, and NBZ filter. I managed to get 12 hrs 10 minutes total exposure time, with 73 x 600s subs. I processed it in SiriL, Starnet, GIMP & G'MIC.