Hemisphere:  Southern  ·  Constellation: Orion (Ori)  ·  Contains:  48 sig Ori  ·  50 zet Ori  ·  Alnitak  ·  B33  ·  Flame Nebula  ·  Horsehead nebula  ·  IC 431  ·  IC 432  ·  IC 434  ·  IC 435  ·  IC431  ·  IC432  ·  IC434  ·  IC435  ·  NGC 2023  ·  NGC 2024  ·  NGC2023  ·  NGC2024  ·  Orion  ·  Orion B  ·  Sh2-277  ·  The star Alnitak (ζOri)  ·  The star σOri  ·  VdB51
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Horsehead and Flame Nebula in HaLRGB, 



    
        

            Harry Zampetoulas

Horsehead and Flame Nebula in HaLRGB

Imaging telescopes or lenses: Williams Optics ZenithStar 61 APO f/5.9

Imaging cameras: ZWO ASI 1600MM-Cool

Mounts: Sky-Watcher EQ6-R Pro

Guiding telescopes or lenses: Williams Optics ZenithStar 61 APO f/5.9

Guiding cameras: ZWO ASI120mm Mini

Focal reducers: William Optics Adjustable Flattener Flat61

Software: Topaz Denoise AI  ·  Photoshop  ·  Pleiades Astrophoto PixInsight

Filters: ZWO L 36mm  ·  ZWO R 36mm  ·  ZWO G 36mm  ·  ZWO B 36mm  ·  ZWO H-Alpha

Accessory: ZWO AsiAir Pro  ·  ZWO EFW 36mm 7 Positions  ·  ZWO Off Axis Guider Adapter


Dates:Nov. 26, 2020Jan. 18, 2021Jan. 19, 2021

Frames:
ZWO B 36mm: 15x300" (gain: 101.00) -10C bin 1x1
ZWO B 36mm: 15x120" (gain: 139.00) -15C bin 1x1
ZWO G 36mm: 15x300" (gain: 101.00) -10C bin 1x1
ZWO G 36mm: 45x120" (gain: 139.00) -15C bin 1x1
ZWO H-Alpha: 28x300" (gain: 0.00) -15C bin 1x1
ZWO H-Alpha: 33x300" (gain: 101.00) -10C bin 1x1
ZWO L 36mm: 31x300" (gain: 0.00) -15C bin 1x1
ZWO R 36mm: 15x300" (gain: 101.00) -10C bin 1x1
ZWO R 36mm: 50x120" (gain: 139.00) -15C bin 1x1

Integration: 15.1 hours

Darks: ~30

Flats: ~30

Flat darks: ~30

Avg. Moon age: 7.55 days

Avg. Moon phase: 50.57%

Bortle Dark-Sky Scale: 8.00


Astrometry.net job: 4173817

RA center: 5h 40' 58"

DEC center: -2° 20' 26"

Pixel scale: 2.119 arcsec/pixel

Orientation: -90.571 degrees

Field radius: 1.283 degrees


Resolution: 3584x2488

Locations: Home Roof, Ialysos, Rhodes, Greece

Data source: Backyard

Description

Another well-known and well-photographed object. Another difficult object due to the very bright stars in the area of Orion.
I photographed the luminance and the H-alpha band with zero gain in order to maximize the full well and the dynamic range of the camera so as to reduce the blown out effect of the stars.
It's a little better but still the microlensing artifact issue appears again in the star Alnitak.
Thanks for visiting

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Horsehead and Flame Nebula in HaLRGB, 



    
        

            Harry Zampetoulas