Lion Nebula, SH2-132

This is another experiment with my dual 200mm camera setup. And even though this uses narrowband filters it's a pseudo-natural color image. I used a dual narrowband filter with my color camera for Ha and Oiii and did not modify the colors. These are represented by the red and blueish-greens. I then added Sii from a monochrome camera as orange, in reality Sii should be a slightly darker red than Ha but using that would make it nearly indistinguishable from the Ha.

 

I'll do an additional session using monochrome Ha and Oiii. Likely that will give me sharper detail. But it can only be done shot over two nights, which rarely happens... or with three cameras. The other route is to change my setup so I can dither between images. I can't currently do that with my current setup. Dithering would perhaps allow me to get a noticeable improvement in the color images with drizzle.

 

From Luca Marinelli on astrobin: "Sharpless 132 (Sh2-132) goes by the common name of the Lion Nebula and it straddles the boundary of the constellations Cepheus and Lacerta. It is primarily an emission nebula with several embedded small dark nebulae and is estimated to be at a distance of roughly 10,000 light years from Earth. The core of Sh2-132 includes pillar-like structures, Bok globules and the characteristic oxygen-rich stripe through the head of the Lion. The star HD211853 in the core region is a Wolf-Rayet star with catalog number WR-153ab. Wolf-Rayet stars are extremely hot stars in late stages of stellar evolution that are often associated with molecular emissions as is the case in the more famous Crescent Nebula and WR-134 in Cygnus."

 

Askar ACL200: 200mm f/4

ZWO ASI533MC Color Camera at -20C

11x60s with UV/IR cut filter (for the stars only)

62x300s with Ha/Oiii filter

 

Nikon 70-200mm 200mm f/2.8

ZWO ASI533MM Mono Camera at -20C

45x300s with Sii filter

 

Guided on ZWO AM5

Processed with PixInsight, Ps

Done