Hemisphere:  Southern  ·  Constellation: Orion (Ori)  ·  Contains:  50 zet Ori  ·  Alnitak  ·  B33  ·  Flame Nebula  ·  Horsehead nebula  ·  IC 434  ·  IC 435  ·  IC434  ·  IC435  ·  NGC 2023  ·  NGC 2024  ·  NGC2023  ·  NGC2024  ·  Orion B  ·  Sh2-277  ·  The star Alnitak (ζOri)
Getting plate-solving status, please wait...
The Horsehead and Flame Nebulae (IC 434, NGC 2024, NGC 2023, IC 435), 



    
        

            Gary Lopez
Powered byPixInsight

The Horsehead and Flame Nebulae (IC 434, NGC 2024, NGC 2023, IC 435)

Imaging telescopes or lenses: Sky-Watcher Esprit 100ED  ·  Orion 6" Ritchey-Chretien

Imaging cameras: ZWO ASI1600MM Cooled PRO  ·  Canon 70D Full Spectrum Mod

Mounts: Orion Atlas EQ-G  ·  Orion Sirius EQ-G

Guiding telescopes or lenses: Orion 50mm Guide Scope with helical focusing

Guiding cameras: Lacerta M-Gen II Autoguider

Focal reducers: William Optics 0.8X Field Flattener

Software: Adobe Lightroom CC  ·  Backyard EOS 3.1.13  ·  Photoshop CC  ·  Main Sequence Software Sequence Generator Pro, v3.0  ·  Pleaides PixInsight Core 1.8

Filters: Astronomik UV-IR Block L-2 2"  ·  Astrodon OIII 3nm-31mm  ·  Astrodon SII 3nm-31mm  ·  Astrodon Ha 3nm-31mm  ·  Astronomik UHC EOS Clip-Filter


Dates:Dec. 19, 2017Nov. 20, 2020Nov. 23, 2020Nov. 25, 2020

Frames:
Astrodon Ha 3nm-31mm: 184x180" (gain: 139.00) -15C bin 1x1
Astrodon OIII 3nm-31mm: 46x180" (gain: 139.00) -15C bin 1x1
Astrodon SII 3nm-31mm: 47x180" (gain: 139.00) -15C bin 1x1
Astronomik UHC EOS Clip-Filter: 18x600" ISO1600

Integration: 16.9 hours

Darks: ~30

Bias: ~50

Avg. Moon age: 6.45 days

Avg. Moon phase: 44.14%

Bortle Dark-Sky Scale: 4.00


Astrometry.net job: 4135082

RA center: 5h 40' 51"

DEC center: -2° 9' 18"

Pixel scale: 1.415 arcsec/pixel

Orientation: -104.274 degrees

Field radius: 0.743 degrees


Resolution: 2362x2952

Locations: Monterey Pines Observatory, Monterey, California, United States

Data source: Backyard

Description

This image combines DSLR RGB data collect in 2017 with CCD narrowband data collected in 2020. The 2017 data were collected with a Canon 70d full-spectrum mod and an Orion 6” RC. The 2020 data were collected with a ZWO ASI1600 MM Pro and a WO FLT132 refractor. My original plan was to use Ha narrowband data to create a luminance mask to reduce the noise and enhance the structural detail of the DSLR image. In this approach, while the emission nebula portions of the resulting image were improved, the reflection nebulae were obscured and the structural detail was lost. So instead I created a composite image, combining emission nebulae portions of the field in a SHO image with the reflection nebulae in the field from the DSLR RGB image. To accomplish this, I stacked the two images in Photoshop Layers and created a mask that allowed the reflection nebulae of the DSLR RGB image to appear in the SHO narrowband image. The resulting image has the tight resolution and structural detail of the emission nebulae, as well as the delicate details and natural color palette of the DSLR-captured reflection nebulae. I like how this image turned out and will use this RGB/NB composite processing technique in the future.

Tip of the hat to Alan Pham for adding the Alnitak star spikes.

Comments

Revisions

    The Horsehead and Flame Nebulae (IC 434, NGC 2024, NGC 2023, IC 435), 



    
        

            Gary Lopez
    Original
    The Horsehead and Flame Nebulae (IC 434, NGC 2024, NGC 2023, IC 435), 



    
        

            Gary Lopez
    B
  • Final
    The Horsehead and Flame Nebulae (IC 434, NGC 2024, NGC 2023, IC 435), 



    
        

            Gary Lopez
    C

B

Description: 2017 DSLR image

Uploaded: ...

C

Description: Moving the signature to a less intrusive location

Uploaded: ...

Sky plot

Sky plot

Histogram

The Horsehead and Flame Nebulae (IC 434, NGC 2024, NGC 2023, IC 435), 



    
        

            Gary Lopez