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Contains:  NGC 2244, Rosette nebula, NGC 2239, The star 12Mon
Getting plate-solving status, please wait...


            Jon Rista


Technical card

Resolution: 2748x1836

Dates:Feb. 3, 2019Feb. 4, 2019Feb. 8, 2019

Astrodon Tru-Balance 1.25" 3nm HA: 42x600" (gain: 111.00) -20C bin 2x2
Astrodon Tru-Balance 1.25" 3nm OIII: 48x600" (gain: 111.00) -20C bin 2x2
Astrodon Tru-Balance 1.25" 3nm SII: 54x600" (gain: 111.00) -20C bin 2x2

Integration: 24.0 hours

Avg. Moon age: 20.25 days

Avg. Moon phase: 4.40%

Bortle Dark-Sky Scale: 8.00

Mean SQM: 18.00 job: 2575372

RA center: 97.980 degrees

DEC center: 4.940 degrees

Pixel scale: 1.693 arcsec/pixel

Orientation: 351.381 degrees

Field radius: 0.777 degrees

Locations: Aurora South Backyard, Aurora, Colorado, United States

Data source: Backyard


The Rosette, the giant rose in the sky, folded out of the primordial gas and dust of the great void. This was an object I just ended up "winging" a couple of nights in February, as it just so happened to roll around. Managed to acquire 24 hours of data across all three channels, and it all ended up being pretty good, clean data.

This is an object I have not imaged since my first year as an astrophotographer. It was my third or fourth object imaged, then I gave it another try about 10 months later. I have not pointed my scope at Rosette since, and I'm quite happy at how well it ended up coming out in the end. There is quite a considerable amount of detail in there, detail I was never really able to pick up before with a DSLR.



Jon Rista
License: None (All rights reserved)


  • Rosette, 


            Jon Rista
  • Final


            Jon Rista
  • Rosette, 


            Jon Rista

Sky plot

Sky plot




            Jon Rista