Bubble nebula in HOO
This beautiful Bubble Nebula (NGC 7635) is emission nebula in Cassiopeia constellation. Its formed by a powerful solar wind of a Wolf-Rayet star. It is a young star that emits strong ultraviolet rays that energise the surrounding molecular gas clouds to form a shape like a bubble. The diameter of the bubble is around 3-5 light years @ distance of about 7100 light years. Gear setup: Celestron Edge HD 8 f/7, Celestron F/R, Ioptron GEM45, Skywatcher EvoGuide 50, ZWO ASI290 MM Guide camera, ZWO EFW 5 x 1.25 Baader SHO narrowband filters, ZWO ASI1600 MM pro cooled @ 0. Lights Ha 14 x 300, O iii 23 x 300, Flats 20 each filter, Darks 20, Bias 50. Total integration 3 hrs & 5 min. Captured by APT, Sharpcap pro, PHD 2. Stacked in PI, processed in PS as HOO with little crop & Topaz Denoise AI. This is my first attempt to image by my new gear setup. The balancing of the scope of Celestron edge HD 8 on Ioptron GEM 45 was difficult. I bought an extra 2 counterweights of 2.5 kg and put it near the RA center to get a perfect balance in RA. While the balance on DEC was made by a Celestron top rail attached to the scope. The Guide graph in PHD 2 was 0.27-0.37 RMS. For full details: www.astrobin.com/full/wczf7i/0/
Bubble nebula in HOO
This beautiful Bubble Nebula (NGC 7635) is emission nebula in Cassiopeia constellation. Its formed by a powerful solar wind of a Wolf-Rayet star. It is a young star that emits strong ultraviolet rays that energise the surrounding molecular gas clouds to form a shape like a bubble. The diameter of the bubble is around 3-5 light years @ distance of about 7100 light years. Gear setup: Celestron Edge HD 8 f/7, Celestron F/R, Ioptron GEM45, Skywatcher EvoGuide 50, ZWO ASI290 MM Guide camera, ZWO EFW 5 x 1.25 Baader SHO narrowband filters, ZWO ASI1600 MM pro cooled @ 0. Lights Ha 14 x 300, O iii 23 x 300, Flats 20 each filter, Darks 20, Bias 50. Total integration 3 hrs & 5 min. Captured by APT, Sharpcap pro, PHD 2. Stacked in PI, processed in PS as HOO with little crop & Topaz Denoise AI. This is my first attempt to image by my new gear setup. The balancing of the scope of Celestron edge HD 8 on Ioptron GEM 45 was difficult. I bought an extra 2 counterweights of 2.5 kg and put it near the RA center to get a perfect balance in RA. While the balance on DEC was made by a Celestron top rail attached to the scope. The Guide graph in PHD 2 was 0.27-0.37 RMS. For full details: www.astrobin.com/full/wczf7i/0/