NGC 2903: RASA8 & ASI183MC

Curramore, Queensland - 10 April 2021

Astrophotography of NGC 2903


  • Telescope: RASA8
  • Camera: ASI 183MC
  • Mount: CEM40
  • Alignment: compass and a quick drift align using PHD2
  • Acquisition software: NINA
  • Guiding: PHD2 and dither
  • Image: 6* 120 secs = 12 minutes
  • Gain: 200
  • Temp: 0 Deg
  • Processing: AstroPixel Processor: lights and darks – drizzle
  • Bortle Class 2 site
  • Location: Curramore, Queensland
  • Date: 10/04/2021
NGC 2903

NGC 2903 is an isolated barred spiral galaxy in the equatorial constellation of Leo, positioned about 1.5° due south of Lambda Leonis.[10] It was discovered by German-born astronomer William Herschel, who cataloged it on November 16, 1784. He mistook it as a double nebula, as did subsequent observers, and it wasn’t until the nineteenth century that the Third Earl of Rosse resolved into a spiral form.[5] J. L. E. Dreyer assigned it the identifiers 2903 and 2905 in his New General Catalogue; NGC 2905 now designates a luminous knot in the northeastern spiral arm.[11] Wikipedia

The RASA8 at Curramore Queensland ready for a night of imaging

RASA8 with ASI183MC on CEM40 mount – Curramore SE Queensland

NGC2903 single 120 second sub exposure -  not debayered

Single 120 sec sub exposure – not debayered

NGC2903 astrophotography with RASA8 and ASI183MC: 12 minutes total integration time