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Astrophotography by Bob Franke

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NGC 7000 & IC 5070 Color Mapped Narrowband


Click the image for a higher resolution (~33%) view. (2196 x 1050 - 1.56 MB)


Click the image for a higher resolution (~33%) view. (2196 x 1050 - 1.46 MB)



Takahashi FSQ-106ED @ f/5.0 (530 mm F.L.) Captured at 2.1 arcsec/pixel.  Shown at 6.42 and 16.70 arcsec/pixel.


Paramount MyT


SBIG STF-8300M Self Guiding Package w/ mono ST-i, using AstroDon 6nm Ha & E-Series RGB filters.

Acquisition Data

Sept-2018 Chino Valley, AZ... with CCD Commander & TheSkyx


This is a two panel mosaic.
The exposures are
duplicated for each panel.

 RGB 390 min. (13 x 10 min. Ea. bin 1x1)


435 min. (29 x 15 min. bin 1x1)


450 min. (30 x 15 min. bin 1x1)


375 min. (25 x 15 min. bin 1x1)

Click here for the RGB version.

Click here for the B&W Ha version.

Software & Processing Notes

  • CCDSoft, CCDStack, PixInsight & Photoshop CS6.

  • PixInsight processing includes calibration,  registration and stacking the Ha & RGB data, making the RGB images, creating the mosaic, gradient repair, non-linear stretching with HistogramTransformation, LocalHistogramEqualization. 

  • PhotoShop for creative color adjustments & final touch-up.


North is to the top.

The emission nebula on the left is famous partly because it resembles Earth's continent of North America. To the right of the North America Nebula, cataloged as NGC 7000, is a less luminous nebula that resembles a pelican dubbed the Pelican Nebula, cataloged as IC 5070. The two emission nebula measure about 50 light-years across, are located about 1500 light-years away, and are separated by a dark absorption cloud. The nebulae can be seen with binoculars from a dark location. Look for a small nebular patch north-east of bright star Deneb in the constellation of Cygnus.
Source:  NASA APOD
More info at Wikipedia: NGC 7000   IC 5070

The SII data are mapped to the red channel, the Ha to the green and the 0III data are mapped to the blue. The field is strongly dominated by the hydrogen. The hydrogen intensity, the green channel, was reduced by 50%.

Just for fun, the second image is a blend of the first image and the RGB image.