IC 63, IC 59, and the Binary Star Gamma Cassiopeiae[b] [/b]
OTA:……………….CDK17
Camera:………….FLI Proline 16803, 9-micron pixels,
0.64 arcsec/pixel
Observatory:…. Rodeo, NM                                                                                          EXPOSURES:               
…R…….14 x 900 sec.                                       
…B…....12 x 900                
…G…….14 x 900 …L……..22 x 1200              
…O.…...14 x 1800                             
…H.……17 x 1800                              
…S.……16 x 1800                               
Total exposure 41.8 hours 
Image Width: 25.5 arc-minutes
Processed by Alex Woronow (2021) using PixInsight, Topaz, 3DLut, WT 

The rather sharp edge of the excited (red) nebula immediately suggests shock-wave heating. However,(1) suggest we are seeing the effect of excitation by ultraviolet photons edge-on. They refer to IC 63 as a PDR nebula: “a Photon-Dominated Region.” So, whence the photons? See my image B…just below the image, causing the bright blue splay, is the B-class star gamma Cassiopeiae (HD5394)—in a binary system (2). This young, strong B-class star lies about 1.3pc from the nebula, and the comet shape of the IC 63 signals additional effects of the radiation interacting with it. 

Looking at IC 63 in image A, notice the stair-steps, particularly on the left of the nebula crest. They lie perpendicular to gamma Cas, receiving energy for the brightness from that star. Smaller comet-shapes within IC 63 also point toward gamma Cas. Also, notice the blue reflection nebula appearing in and around IC 63. These too are a product of HD5394. 

The nebula IC 59 (the somewhat comet-shaped nebula on the right side of my image B) is also illuminated by HD5394 (3) and likely shaped the same forces as those shaping IC 63. 

These images are “true-color” mappings of the narrowband into their respective broadband equivalents with the ultimate L-channel being a “Super L” with a bias toward Ha.

(1) Janse, DJ, et al. (1994) Astro. & Astrophys.
(2) https://www.star-facts.com/gamma-cassiopeiae/
(3) Mamajek, E (2017) J Double Star Obs.