Astro Anarchy: Cassiopeia mosaic gets larger

Sunday, November 29, 2020

Cassiopeia mosaic gets larger

I started this imaging project at Spring season 2020m now I have shot more frames for this active region of the sky. At center of the photo lays the Bubble and cave nebula At lower left locates the Cederblad 214 and just few degrees to right from it lays the supernova remnant CTB1, it can be seen as a thin ring like formation. The Wizard nebula can be seen at upper right corner of the image. Note. there is a moon as a scale at a lower left corner of the image. This is a large area of space and I will join this mosaic image to a large one, I have shot it back in 2012.

There is an interesting looking dim circular formation at upper left, there is a bright star at almost center of it. Could this be an uncataloged supernova remnant?

Total exposure time is now around 50 hours with my current wide field imaging system build around the Tokina AT-x 300 mm f2.8 camera optics. Astro Don 50x50 mm square narrowband filters, 5nm H-alpha, 3nm O-III and 3nm S-II. Camera is a massive Apogee Alta U16. This mosaic has now ten frames.

Clouds of Cassiopeia
Click for a much large image, it's worth it!