I started imaging this object in October 2017 but owing to poor conditions I did not until just recently have enough quality subs to create a decent image. I find M33 fasinating owing to the many bright embedded blue and red emissions regions. Since finishing this image I have enjoyed reading a document 'M33 HII Regions and Star Clouds' by Steve Gottlieb (
http://www.astronomy-mall.com/Adventures.In.Deep.Space/M33.HII-Star.Clouds.html) which describes many of these regions. I am highly impressed that my 3" scope has clearly resolved the triple star components of object NGC 603.
Staggering to me in a different way are the statistics of NGC 604. Quoting from Wikipedia, NGC 604 is an H II region inside the Triangulum Galaxy. It was discovered by William Herschel on September 11, 1784. It is the largest H II region in the Local Group of galaxies; at the galaxy's estimated distance of 2.7 million light-years, its longest diameter is roughly 1,520 light years (~460 parsecs), over 40 times the size of the visible portion of the Orion Nebula.
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