Hemisphere:  Southern  ·  Constellation: Orion (Ori)  ·  Contains:  Flame Nebula  ·  IC 434  ·  NGC 2023  ·  Orion B
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B33, IC 434 The Horsehead Nebula in HaLHaRGB, 



    
        

            Mark Wetzel
B33, IC 434 The Horsehead Nebula in HaLHaRGB
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B33, IC 434 The Horsehead Nebula in HaLHaRGB

Getting plate-solving status, please wait...
B33, IC 434 The Horsehead Nebula in HaLHaRGB, 



    
        

            Mark Wetzel
B33, IC 434 The Horsehead Nebula in HaLHaRGB
Powered byPixInsight

B33, IC 434 The Horsehead Nebula in HaLHaRGB

Technical card

Imaging cameras: ZWO ASI 1600MM-Pro Cool

Mounts: Celestron CGEMⅡ

Guiding cameras: ZWO 174MM Mini

Focal reducers: Celestron 0.7x Focal Reducer

Software: Celestron CPWI  ·  Pleiades Astrophoto PinInsight  ·  Adobe Photoshop CC 2020  ·  PHD 2

Filters: ZWO 36mm 7nm Ha  ·  ZWO 36mm Red  ·  ZWO 36mm Green Filter  ·  ZWO 36mm Blue Filter  ·  ZWO 36mm Luminance Filter

Accessory: Celestron OAG


Dates:Oct. 18, 2020Oct. 20, 2020Oct. 21, 2020

Frames:
ZWO 36mm 7nm Ha: 49x300" (4h 5') (gain: 200.00) -10C bin 1x1
ZWO 36mm Blue Filter: 53x120" (1h 46') (gain: 139.00) -10C bin 1x1
ZWO 36mm Green Filter: 49x120" (1h 38') (gain: 139.00) -10C bin 1x1
ZWO 36mm Luminance Filter: 111x60" (1h 51') (gain: 139.00) -10C bin 1x1
ZWO 36mm Red: 49x120" (1h 38') (gain: 139.00) -10C

Integration: 10h 58'

Darks: ~50

Flats: ~50

Flat darks: ~50

Avg. Moon age: 3.82 days

Avg. Moon phase: 17.17%

Bortle Dark-Sky Scale: 1.00


Basic astrometry details

Astrometry.net job: 4079212

RA center: 5h 41' 8"

DEC center: -2° 25' 58"

Pixel scale: 1.345 arcsec/pixel

Orientation: 91.650 degrees

Field radius: 0.370 degrees


Resolution: 1575x1200

Locations: Casitas de Gila, Gila, New Mexico, United States

Data source: Traveller

Description

During my October trip to Casitas de Gila, Gila NM, I worked on better automation of an imaging session using two targets in a night. The early target was the Wizard nebula. When Orion was high enough in the sky, I switched to Barnard 33, the Horsehead Nebula. I also experimented with increased gain for imaging with the Hydrogen-alpha (Ha) filter. Since B33 is rather faint, I sacrificed dynamic range for increased signal to noise ratio. This worked quite well for the Ha data. B33 is a Ha emission nebula in the constellation Orion, located near the bright star Alnitak in Orion’s belt. With my Celestron 9.25” SCT fitted with a 0.7x focal reducer, I included the reflection nebula NGC 2023. This made processing of Ha and Luminance data a real challenge. The three brightest, bloated stars remain as a processing issue.

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B33, IC 434 The Horsehead Nebula in HaLHaRGB, 



    
        

            Mark Wetzel