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


            Tom's Pics
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Horsehead nebula

Technical card

Dates:Jan. 29, 2020

Frames: 158x60"

Integration: 2.6 hours

Avg. Moon age: 4.20 days

Avg. Moon phase: 18.66% 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.



Tom's Pics
License: None (All rights reserved)


  • Horsehead nebula, 


            Tom's Pics
  • Final
    Horsehead nebula, 


            Tom's Pics


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

Sky plot

Sky plot


Horsehead nebula, 


            Tom's Pics

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Northeast Imagers