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Contains:  IC 2948, lambda Cen nebula
Getting plate-solving status, please wait...
Running Chicken Nebula (IC 2944), 


            Bruce Rohrlach
Running Chicken Nebula (IC 2944)
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Running Chicken Nebula (IC 2944)

Technical card

Imaging telescopes or lenses: Skywatcher 200P 200mm/f5 NEQPro6

Imaging cameras: ZWO 1600mm Cooled Pro

Mounts: SkyWatcher NEQPRO6 Synscan GOTO

Software: Adobe Photoshop Lightroom CC  ·  AstroPixel Processor

Filters: ZWO OIII 36mm  ·  ZWO Ha 36mm  ·  ZWO SII 36mm

Dates:Jan. 3, 2019

ZWO Ha 36mm: 60x30" (gain: 300.00) -20C bin 1x1
ZWO OIII 36mm: 60x30" (gain: 300.00) -20C bin 1x1
ZWO SII 36mm: 60x30" (gain: 300.00) -20C bin 1x1

Integration: 1.5 hours

Darks: ~30

Bias: ~50

Avg. Moon age: 27.16 days

Avg. Moon phase: 6.20%

Bortle Dark-Sky Scale: 3.00

Basic astrometry details job: 2636888

RA center: 11h 39' 28"

DEC center: -63° 27' 18"

Pixel scale: 1.628 arcsec/pixel

Orientation: 54.422 degrees

Field radius: 0.605 degrees

Resolution: 2157x1596

Locations: Ventnor, Phillip Island, Victoria, Australia

Data source: Backyard


Quick Narrowband trial on the Running Chicken Nebula (IC 2944) from the end of last nights session (2.30-4.00am Phillip Island, Victoria). The images comprise 30 minutes data from each of the Ha, OIII and SII filters using 30 second subs (total 90 mins exposure).

Skywatcher 8 inch f5, ASI1600mmPro, Bin1x1, -20C, Gain 300.

A lot of technical errors here that I need to get my head around, including dead pixels (I think) and the dreaded pattern noise that I don't know how to fix other than to de-noise the heck out of the data - which I hate doing. I would love to hear if anyone knows how to get rid of fixed pattern noise (other than by dithering?).

I'll have to give this more serious attention at some point soon with lower gain values, more data and application of additional calibration frames. Nevertheless - the Running Chicken looks like a great emission target for Narrowband imaging.



Bruce Rohrlach
License: None (All rights reserved)

Sky plot

Sky plot


Running Chicken Nebula (IC 2944), 


            Bruce Rohrlach