Two globular clusters, M53 and NGC 5053
This was shot from my backyard in Long Beach, CA. Whenever I target deep sky objects from my light polluted home skies, there are always significant gradients to deal with in the final image. With this particular data, that is made worse by the image being a mosaic. I shot this in March 2017, and over the past two years, I think I learned enough to minimize their effect. M53 is in the upper right, and NGC 5053 is in the lower left.
Each panel is a stack of 120 s exposures shot with a Celestron Edge HD 9.25" at f/2.3 with Hyperstar and an Atik 314L+ color CCD. Initial pre-processing in Nebulosity, stacking and initial processing in PixInsight; final processing in PS CS 5.1.
Image center (J2000) is at:
RA 13h 14m 25s
DEC +17° 54' 41"
Two globular clusters, M53 and NGC 5053
This was shot from my backyard in Long Beach, CA. Whenever I target deep sky objects from my light polluted home skies, there are always significant gradients to deal with in the final image. With this particular data, that is made worse by the image being a mosaic. I shot this in March 2017, and over the past two years, I think I learned enough to minimize their effect. M53 is in the upper right, and NGC 5053 is in the lower left.
Each panel is a stack of 120 s exposures shot with a Celestron Edge HD 9.25" at f/2.3 with Hyperstar and an Atik 314L+ color CCD. Initial pre-processing in Nebulosity, stacking and initial processing in PixInsight; final processing in PS CS 5.1.
Image center (J2000) is at:
RA 13h 14m 25s
DEC +17° 54' 41"