Hemisphere:  Southern  ·  Contains:  B33  ·  Horsehead nebula  ·  IC 434  ·  IC 435  ·  IC434  ·  IC435  ·  NGC 2023  ·  NGC2023  ·  Sh2-277
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Horsehead nebula, 


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Horsehead nebula

Imaging telescopes or lenses: Celestron RASA 11"

Imaging cameras: ZWO ASI533MC-Pro

Mounts: Paramount MX +

Guiding telescopes or lenses: Orion 30mm Ultra Mini guide scope

Guiding cameras: ZWO ASI120MM Mini

Software: Main Sequence Software Seqence Generator Pro 3  ·  Pixinsight  ·  PHD2

Accessory: SkyShed Roll-off  ·  Starizona Microtouch Autofocuser  ·  Pegasus Astro Ultimate Powerbox v2  ·  Interactive Astronomy SkyRoof  ·  Intel NUC i7  ·  Interactive Astronomy SkyEye  ·  Interactive Astronomy Sky Alert

Dates:Jan. 29, 2020

Frames: 158x60"

Integration: 2.6 hours

Avg. Moon age: 4.20 days

Avg. Moon phase: 18.66%

Astrometry.net job: 3214565

RA center: 5h 41' 11"

DEC center: -2° 30' 41"

Pixel scale: 1.253 arcsec/pixel

Orientation: -89.259 degrees

Field radius: 0.645 degrees

Resolution: 2394x2835

Locations: JRO - Home Observatories, Milford, New Jersey, United States

Data source: Backyard


First Light for my new ZWO ASI533MC Pro on my 11" RASA replacing my ASI294MC Pro. I liked that this smaller chip camera gives me a little smaller FOV over the 294. This is 158 x 60 sec subs, processed in the lastest PI with WeightedBatchPreProcessing. WBPP took 31 minutes but it did make a master dark, flat, bias as well as the light that I processed in PI the way I usually do.
Comments welcome.



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  • Horsehead nebula, 


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  • Final
    Horsehead nebula, 


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Description: I didn't like that Alnitak was leaking into the picture so this version is cropped.

Sky plot

Sky plot


Horsehead nebula, 


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