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Contains:  Sombrero galaxy, M 104, NGC 4594
Getting plate-solving status, please wait...
M104-First Light RASA 11" Astrograph, 


            Bob J
M104-First Light RASA 11" Astrograph

M104-First Light RASA 11" Astrograph

Technical card

Resolution: 2501x1911

Dates:April 10, 2019

Frames: 60x60" (gain: 120.00) -20C bin 1x1

Integration: 1.0 hours

Darks: ~30

Flats: ~30

Flat darks: ~30

Bias: ~50

Avg. Moon age: 5.00 days

Avg. Moon phase: 25.77%

Bortle Dark-Sky Scale: 4.00

Temperature: 4.00 job: 2639948

RA center: 189.998 degrees

DEC center: -11.626 degrees

Pixel scale: 1.544 arcsec/pixel

Orientation: 1.399 degrees

Field radius: 0.675 degrees

Data source: Backyard


This is a second image I was able to capture during my quick first light attempt. Clearly the diffraction spikes are off causing the stars to look strange. The wires need to be oriented 90 degrees from each other but I was I such a hurry to get something imaged I just ran with that I had . And now the forecast is a week of rain, followed by a full moon. Oh the curse of new equipment is alive and well here in Pennsylvania.



Bob J
License: Attribution-NonCommercial-ShareAlike Creative Commons


  • M104-First Light RASA 11" Astrograph, 


            Bob J
  • Final
    M104-First Light RASA 11" Astrograph, 


            Bob J


Cropped Version

Sky plot

Sky plot


M104-First Light RASA 11" Astrograph, 


            Bob J