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This is my L-HA_R_G_B image of NGC 2903, a Spiral Galaxy in Leo.  I captured this luminance image with a C-11 SCT on April 21 & May 2/3 2018; I recorded 21 five minute luminance exposures on Apr 21 and 15 seven minute exposures on May 2-3 for a total of 210 minutes.   This galaxy is similar to our own Milky Way in that they both have spiral structure with a central bar.  Both galaxies are roughly the same size (80,000 LY for NGC 2903 vs 100,000 LY for the Milky Way).  I also recorded red, green blue and HA filter images on Jun 15 2018 and earlier.  NGC 2903 is a face-on galaxy located 20.5 million LY from Earth and measures 12.6 x 6.6 arcminutes in angular width.  

 

This is my LRGB image of NGC 2903, a Spiral Galaxy in Leo.  I captured this luminance image with a C-11 SCT on April 21 & May 2/3 2018; I recorded 21 five minute luminance exposures on Apr 21 and 15 seven minute exposures on May 2-3 for a total of 210 minutes.   This galaxy is similar to our own Milky Way in that they both have spiral structure with a central bar.  Both galaxies are roughly the same size (80,000 LY for NGC 2903 vs 100,000 LY for the Milky Way).  I also recorded red, green and blue exposures on June 8 2018 and earlier.  NGC 2903 is a face-on galaxy located 20.5 million LY from Earth and measures 12.6 x 6.6 arcminutes in angular width.  

 

This is my second image of NGC 2903, a Spiral Galaxy in Leo.  I captured this luminance image with a C-11 SCT on April 21 & May 2/3 2018; I recorded 21 five minute luminance exposures on Apr 21 and 15 seven minute exposures on May 2-3 for a total of 210 minutes.   This galaxy is similar to our own Milky Way in that they both have spiral structure with a central bar.  Both galaxies are roughly the same size (80,000 LY for NGC 2903 vs 100,000 LY for the Milky Way).  NGC 2903 is a face-on galaxy located 20.5 million LY from Earth and measures 12.6 x 6.6 arcminutes in angular width.  

 

This is my first image of NGC 2903, a Spiral Galaxy in Leo.  I captured this luminance image with a C-11 SCT on April 21; I recorded 21 five minute luminance exposures on Apr 21 for a total of 105 minutes. 

 

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