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Contains:  Omega nebula, M 17, NGC 6618, M 18, NGC 6613, M 16, Eagle nebula, NGC 6611, NGC 6604, IC 4701
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The Eagle and the Swan - M16-M17 Widefield, 


            Gabriel R. Santos...
The Eagle and the Swan - M16-M17 Widefield

The Eagle and the Swan - M16-M17 Widefield

Technical card

Resolution: 1800x1200

Dates:Sept. 16, 2017

Frames: 10x240" ISO800

Integration: 0.7 hours

Darks: ~10

Bias: ~30

Avg. Moon age: 25.62 days

Avg. Moon phase: 16.34%

Mean FWHM: 2.60

Temperature: 11.00 job: 1815902

RA center: 274.522 degrees

DEC center: -14.423 degrees

Pixel scale: 12.863 arcsec/pixel

Orientation: 55.671 degrees

Field radius: 3.865 degrees

Locations: Sítio, Cristina, MG, Brazil


This image features a very rich region on our Milky Way, towards the constellation Scutum. These massive clouds of dust and gas are starforming regions. M16 is about 6500 ly away, and within its brightest centre, lies the famous "Pillars of Creation". In the zoomed crop the dust pillars can be outlined: all captured without a telescope! (on a 200mm camera lens). M17 is about 5500 ly away and spans over 30 light years across.

I was very happy with how this image turned out, being imaged with a stock (unmodded) T5, that is, most of the Ha emission on the region (and there's a lot in it, as this image captures only a fraction of it all) is blocked by the DSLR filer. In spite of the short integration (40min), on a very short FL lens, the result is a wide and expansive view of the region and its surroundings, and truly gives a sense of scale - these nebula are, indeed, very large in agular dimensions on the night sky. I was also surprised on the amount of detail captured in the Pillars of Creation, this being such an undersampled and wide field system, at only 200mm.

*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 16, 2017
Camera: Canon EOS T5 (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: 10x240s (total 40min)




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


  • The Eagle and the Swan - M16-M17 Widefield, 


            Gabriel R. Santos...
  • Final
    The Eagle and the Swan - M16-M17 Widefield, 


            Gabriel R. Santos...


Full image, without overlays

Sky plot

Sky plot


The Eagle and the Swan - M16-M17 Widefield, 


            Gabriel R. Santos...