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

Celestial hemisphere: Northern · Constellation: Cygnus (Cyg) · Contains: 50 alf Cyg · 55 Cyg · 56 Cyg · 57 Cyg · 60 Cyg · 62 ksi Cyg · B349 · B350 · B352 · B353 · B355 · B358 · Deneb · HD196359 · HD196687 · HD196789 · HD196819 · HD196833 · HD197036 · HD197037 · HD197139 · HD197167 · HD197291 · HD197374 · HD197391 · HD197407 · HD197488 · HD197621 · HD197678 · HD197700 · And 142 more.

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North America and Pelican Nebulae - Challenging Conditions

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North America and Pelican Nebulae - Challenging Conditions

=== 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)

Final
Original
B

B

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

Uploaded: ...

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Status	Advanced success
Started	...
Astrometry.net job	1855161
PixInsight job	C9XEWVN59NZTHNJHZPMDEL03561IJ60D
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	20h52m32s.2
RA (top/left)	21h10m58s.1
RA (top/right)	20h33m53s.0
RA (bottom/right)	20h35m26s.8
RA (bottom/left)	21h09m54s.9

Dec (center)	+44°15′05″
Dec (top/left)	+46°20′13″
Dec (top/right)	+46°15′46″
Dec (bottom/right)	+42°00′10″
Dec (bottom/left)	+42°03′55″

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North America and Pelican Nebulae - Challenging Conditions

North America and Pelican Nebulae - Challenging Conditions

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North America and Pelican Nebulae - Challenging Conditions

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