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Name / Constellation

Leo B

 Other:  Leo II, UGC 6253, PGC 34176, DDO 93, Harrington-Wilson #2

Leo
Coordinates AR: 11h 13m 29,2s - Dec: +22° 09′ 17″
Optics Officina Stellare 10" f8 Richtey-Cretien
Camera-Mount SBIG ST10XME/CFW10 - ZWO ASI1600MM guider (ONAG) - 10Micron GM2000 QCI Mount
Filters Astrodon Gen. II - LRGB
Exposure
  • Luminance
  • Red
  • Green
  • Blue
  • 8 x 900 sec - 2 hours
  • 4x 900 sec - 1 h
  • 4 x 900 sec -1 h
  • 4 x 900 sec - 1 h
  • UNBINNED
  • BINNING 2x2
  • BINNING 2x2
  • BINNING 2x2
Location / Date Promiod (Valle D'Aosta-Italy) "TLP" Remote Observatory - feb 2022
Seeing 2.6" @ 0.7 arcosec/pixel unbinned
Note  
Acquisition MaxIm DL - CCD Autopilot 5
Processing Adobe Photoshop 2024 -
Comment

 

Leo B (Leo II) is about 701,000 light-years from Earth, and has a diameter of about 4,200 light-years.
It was discovered in 1950 by Robert G. Harrington and Albert George Wilson, from the Mount Wilson Observatory and the Palomar Observatory in California.