Contains: Cone nebula, Christmas Tree cluster, NGC 2264, The star 15Mon
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Fox Fur Nebula/Cone Nebula Medium Field in HSO Blend

Technical card

Resolution: 2064x1416

Dates: Jan. 15, 2018Jan. 18, 2018Jan. 19, 2018

Astrodon Ha 1.25" 5nm: 58x240" (gain: 200.00) -25C bin 1x1
Astrodon OIII 1.25 3nm: 64x200" (gain: 200.00) -25C bin 1x1
Astrodon SII 1.25 3nm: 75x240" (gain: 200.00) -25C bin 1x1

Integration: 12.4 hours

Avg. Moon age: 10.51 days

Avg. Moon phase: 3.10%

Mean SQM: 19.00 job: 1898876

RA center: 100.302 degrees

DEC center: 9.716 degrees

Pixel scale: 1.968 arcsec/pixel

Orientation: 61.774 degrees

Field radius: 0.684 degrees


Added SII data to my previous Ha and OIII. Spent quite alot of time dealing with several processing challenges. One of the most difficult was the seeing for the OIII and SII data was much worse than the Ha data. This required shrinking the stars considerably in the OIII and SII to avoid color rings around stars. Another challenge was the OIII in this area is very weak compared to the Ha and SII so it is hard to effectively blend it in and have it show up.

Hard to find many tricolor narrow band images of this area!






Fix mask which led to speckled looking areas.


Tone back green cast slightly.

Sky plot

Sky plot


Fox Fur Nebula/Cone Nebula Medium Field in HSO Blend,