Hemisphere:  Northern  ·  Contains:  IC 5070  ·  NGC 6997  ·  NGC 7000  ·  North America Nebula  ·  Pelican Nebula  ·  The star 56Cyg  ·  The star 57Cyg
Getting plate-solving status, please wait...
Shadows of The North America Nebula (Bi-Color HA-OIII), 


            Terry Hancock
Shadows of The North America Nebula (Bi-Color HA-OIII)
Powered byPixInsight

Shadows of The North America Nebula (Bi-Color HA-OIII)

Acquisition type: Electronically-Assisted Astronomy (EAA, e.g. based on a live video feed)

Technical card

Imaging telescopes or lenses: Takahashi FSQ-130

Imaging cameras: qhyccd 367 Pro C

Mounts: software bisque Paramount ME

Guiding cameras: Starlight Xpress Lodestar X2 Lodestar Autoguider X2

Software: PixInsight 1.8  ·  Starnet ++  ·  Adobe Photoshopc CC

Filters: Chroma Technology LRGB filters  ·  Chroma Ha 5nm, OIII 5nm, SII 5nm

Basic astrometry details

Astrometry.net job: 3856620

RA center: 20h 52' 19"

DEC center: +43° 57' 43"

Pixel scale: 1.555 arcsec/pixel

Orientation: 13.796 degrees

Field radius: 1.909 degrees

Resolution: 7362x4896

Data source: Own remote observatory

Remote source: Grand Mesa Observatory


The North America Nebula NGC7000 in bi-color captured earlier this year using the QHY367 Pro C full frame one shot color 36 Megapixel CMOS camera mounted on the Takahashi 130 FSQ.
Often ignored in images of The North America Nebula is the immense patch of shadows, the dark nebula LDN 935 appearing prominently (left of center) with the Cygnus Wall (at bottom left) and The Pelican Nebula IC 5070 (at center). The dust from this dark nebula obscures the emission nebula to form the region known as The Gulf of Mexico. This detailed image surely visualizes the nature of dust and gas clouds that populate the universe.
In this Narrowband version (HOO) the H-Alpha is mapped to red OIII is mapped to the blue channel and blended to the green channel, with RGB data used for the natural star color.

Captured over 5 nights in May and June 2020 for a total acquisition time of 16.5 hours.
The data used in this image is available from Grand Mesa Observatory Subscriptions, System 1.

Technical Details
Captured and processed by: Terry Hancock
Location: GrandMesaObservatory.com Purdy Mesa, Colorado
Dates of Capture May 21, 29, June 10, 12, 15 2020
RGB 290 min 29 x 600 sec
HA 495 min 33 x 900 sec
OIII 210 min 14 x 900 sec
Narrowband Filters by Chroma (5nm)
Camera: QHY367 ProC full frame one shot color CMOS
Filter Wheel: QHYCFW3 Large
Gain 2850, Offset 76
Calibrated with dark, Bias and Flat Frames
Optics: Walter Holloway's Takahashi FSQ 130 APO Refractor @ F5
Image Scale: 1.56 arcsec/pix
Field of View: 3d 7' 41.0" x 2d 3' 5.3 (127.3 x 190.1 arcmin)
EQ Mount: Paramount ME
Image Acquisition software Maxim DL6 Pre Processing in Pixinsight Post Processed in Photoshop CC and Starnet.



Terry Hancock
License: None (All rights reserved)

Sky plot

Sky plot


Shadows of The North America Nebula (Bi-Color HA-OIII), 


            Terry Hancock