Cookie consent

AstroBin saves small pieces of text information (cookies) on your device in order to deliver better content and for statistical purposes. You can disable the usage of cookies by changing the settings of your browser. By browsing AstroBin without changing the browser settings, you grant us permission to store that information on your device.

I agree
Contains:  NGC 7039, North America nebula, NGC 7000, NGC 6997, Pelican nebula, IC 5070, IC 5068, The star ξCyg, The star 60Cyg, The star 57Cyg, The star 56Cyg, The star 55Cyg, The star Deneb (αCyg)
Getting plate-solving status, please wait...
North America and Pelican Nebulae - Challenging Conditions, 





    
        

            Gabriel R. Santos...
North America and Pelican Nebulae - Challenging Conditions

North America and Pelican Nebulae - Challenging Conditions

Technical card

Resolution: 1800x1200

Dates:Sept. 9, 2017

Frames: 40x240" ISO800

Integration: 2.7 hours

Darks: ~15

Bias: ~30

Avg. Moon age: 18.09 days

Avg. Moon phase: 87.98%

Mean FWHM: 3.40

Temperature: 8.60

Astrometry.net job: 1855161

RA center: 313.138 degrees

DEC center: 44.250 degrees

Pixel scale: 12.873 arcsec/pixel

Orientation: 0.677 degrees

Field radius: 3.868 degrees

Locations: Sítio, Cristina, MG, Brazil

Description

=== PLEASE ALSO CHECK REVISION B TO HAVE AN IDEA OF THE CHALLENGING CONDITIONS AND TECHNICAL DIFFICULTIES THAT WENT ALONG WITH THIS IMAGE===

My 1st successful rendition of this iconic object of the Northern constellation Cygnus, the Swan. A technical challenge to me: the object never rises above 20 degrees from my site. Therefore, the object is always very close to the horizon, where the effects of Light Pollution becomes more and more significant. Furthermore, the moon phase wasn't ideal - being almost full, this image was made in the short period of astronomical darkness between sunset and moonrise. Some frames ended up being washed out by light from the rising moon. Finally, bear in mind my camera is *not* modified - Even though the region shines in glorious H-alpha red nebulosity, my stock filter blocks most of it. Even so, I was surprised to see a bit of colour and a decent amount of nebulosity captured.

*Please check the full image 1800px - resized from original 6000px)*

Constructive criticism, comments and suggestions are more than welcome in the comments section. Thank's for taking your time to look at this image.

Taken from Rural Skies (Bortle 3-4; NELM ~6.2; SQM ~21.6*calculated), from Cristina, MG, Brazil (22ºS latitude).

Date and Time: September 09, 2017
Camera: Canon EOS 80D (unmodded), at ISO 800
Lens: Tamron 70-200mm f/2.8, operated at 200mm f/3.5
Mount: Sky-Watcher HEQ5, tracking, guided
Guiding: Starguider 50mm Guidescope + ASI120mm + PHD2; ~1.7" RMS
Exposure Detail: 20x240s (total 80min)

Comments

Author

grsotnas
Gabriel R. Santos...
License: None (All rights reserved)
3090
Like

Revisions

  • Final
    North America and Pelican Nebulae - Challenging Conditions, 





    
        

            Gabriel R. Santos...
    Original
  • North America and Pelican Nebulae - Challenging Conditions, 





    
        

            Gabriel R. Santos...
    B

B

A challenge indeed! This is a wider view @ 70mm. Just see how close to the horizon this image was captured!

Sky plot

Sky plot

Histogram

North America and Pelican Nebulae - Challenging Conditions, 





    
        

            Gabriel R. Santos...