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Contains:  IC 2948, IC2948, lambda Cen nebula
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The Bok Globules in IC 2948 Running Chicken Nebula (Bicolor)

Technical card

Dates:April 10, 2020April 11, 2020

Optolong H-alpha 7nm 2": 78x180" (gain: 139.00) -25C bin 1x1
Optolong Oiii-CCD 6.5 nm 2": 80x180" (gain: 139.00) -25C bin 1x1

Integration: 7.9 hours

Darks: ~100

Flats: ~100

Flat darks: ~100

Avg. Moon age: 18.07 days

Avg. Moon phase: 87.88%

Bortle Dark-Sky Scale: 9.00

Temperature: 12.33 job: 3406979

RA center: 11h 38' 40"

DEC center: -63° 26' 42"

Pixel scale: 0.865 arcsec/pixel

Orientation: -10.703 degrees

Field radius: 0.616 degrees

Resolution: 4038x3162

Locations: Casa, Córdoba Capital, Córdoba, Argentina

Data source: Backyard


Hi everyone, this was a first test with my brand new ZWO 7x2" EFW, The first night I have some several issues of tilt in the imaging train due to the added wheight because the wheel and the 7 2" filters, but I could solve it at least fot now for the second night.

That's the reason that I could only get 4 h of each channel, and the clouds appear, so Sii must wait for clearer nights. Also the Moon was full, so no best condition for photography, but I really wanted to try the filter wheel, and it is magical. Before the wheel I have to screw the filter in use on the thread of the coma corrector of my newton telescope, and for changing filter I have to take the camera out, unscrew one filter an screw the other one, for that reason I always did 1 channel for each night. Now I can get Ha, Oiii and Sii on the same night, this is a huge improvement in my setup.

The Image is a Bicolour image, mapping the colors was creating a synthetic green R:Ha, G:Ha*Oiii*1.3 and B:Oiii.

Hope you like it and stay safe.

Clear Skies, Ariel.



Ariel Cappelletti
License: None (All rights reserved)

Sky plot

Sky plot


The Bok Globules in IC 2948 Running Chicken Nebula (Bicolor), 


            Ariel Cappelletti