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Contains:  IC 435, NGC 2024, NGC 2023, Horsehead nebula, IC 434, The star Alnitak (ζOri)
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The Horsehead and Flame Nebula - TOA-150 Test

Technical card

Resolution: 4425x3335

Astrodon Blue Tru-Balance E-Series Gen 2: 31x600"
Astrodon Green Tru-Balance E-Series Gen 2: 39x600"
Astrodon Luminance Tru-Balance E-Series Gen 2: 30x900"
Astrodon Red Tru-Balance E-Series Gen 2: 41x600"

Integration: 26.0 hours job: 2528040

RA center: 85.284 degrees

DEC center: -2.321 degrees

Pixel scale: 1.131 arcsec/pixel

Orientation: 98.049 degrees

Field radius: 0.870 degrees

Locations: Deep Sky West, Rowe, New Mexico, United States

Data source: Amateur hosting facility

Remote source: DeepSkyWest


TOA-150 test data before she gets migrates to the south. Personally, I am in love with this scope, but I am a total sucker for big refractors.

Got inspired after seeing Ken Crawford's NGC 2023 HA filaments and did my best to bring them out in this set. While we had a few HA frames lying around, there were literally only a few and seemed to do more harm than good trying to implement them so I just had to rely on LRGB data to make them stand out. A bit tough, but nothing a little masking can't help with.



Connor Matherne
License: None (All rights reserved)

Sky plot

Sky plot


The Horsehead and Flame Nebula - TOA-150 Test, 


            Connor Matherne