Swan Adventures

I first visited the constellation of Cygnus soon after starting astrophotography, inevitably to image the Veil Nebula and North America (NAN) & Pelican Nebula, or parts thereof.   As my abilities and equipment improved I’ve often returned to each of these popular targets, in the hope of obtaining a better image each time and I’m sure I will continue in this pursuit.  However, such is the draw of these iconic objects that it’s easy to overlook other equally exciting targets within the same constellation.  

Last year (2019) my attention was drawn to such a target in the form of DWB 111 or the Propeller Nebula, which I successfully imaged and thereby ignited my interest in the rich, very large HII-region of Cygnus (see above), within which imaging possibilities are almost endless.  I therefore recently went back during this September to image two less popular targets located within the aforesaid HII-region; I had already imaged the NAN and Veil Nebula again in early September, on which occasion using my new Samyang 135mm f2 lens set-up to obtain wide-field shots.

After first imaging LBN 325 and other emission nebulae across the adjacent area, I turned my attention to a neighbouring part of the said HII-region of Cygnus, likewise found in the quadrant of Cygnus defined by the stars Deneb – Sadr – Delta Cygni.  Similarly this area is full of numerous emission nebulae but furthermore here strikingly intercalated with dark nebula, star clusters and in particular reflection nebulae.  Most prominent of these near the centre of the image is NGC 6914, vdB 131 & vdB32 (Main image top-of-the-page), which are conspicuously highlighted by associated bright blue nebulosity.  Dotted throughout the rest of the image the use of HaLRGB picks out many other blue and rare yellow refection nebula and stars that all together make for an exciting image (Ha starless image above).  Such is the quality and vastness of this part of Cygnus for potential image targets that I feel sure I’ll be coming back to this region for many years to come.

 IMAGING DETAILS
Category / Object Reflection Nebula  NGC 6914
ConstellationCygnus
Distance6,000 light-years
Size2.5o x 1.90o
Apparent Magnitude?
  
Scope William Optics GT81 + Focal Reducer FL 382mm  f4.72
MountSW AZ-EQ6 GT + EQASCOM computer control & Cartes du Ciel
GuidingWilliam Optics 50mm guide scope
 + Starlight Xpress Lodestar X2 camera & PHD2 guiding
CameraZWO1600MM-Cool mono  CMOS sensor
 FOV 2.65o x 2.0o Resolution 2.05”/pix  Max. image size 4,656 x 3,520 pix   
EFWZWOx8 + ZWO LRGB & Ha OIII SII 7nm filters 
Capture & ProcessingAstro Photography Tool + PHD2 +  Deep Sky Stacker + PixInsight + Photoshop CS3 + Topaz AI Denoise
Image Location              & OrientationCentre:   RA 20h 25’ 23.097”       DEC +42o 22’ 41.092”                      Top of image = approximately North     
Exposures36 @ 300 sec Ha  +  37 x LGB  36 x R @ 180 sec Time: Ha 3hr LRGB  7hr 21min  =  Total 10hr 21 min   
 @ 139 Gain   21  Offset @ -20oC    
Calibration5 x 300 sec Ha + 10 X 180’ LRGB  Darks,  20 x 1/4000 sec Bias  10 x  HaLRGB Flats               @ ADU 25,000
Location & DarknessFairvale Observatory – Redhill – Surrey – UK        Typically Bortle 5-6
Date & Time17th 20th 21st September 2020  @ +21.00h  
WeatherApprox. 15oC   RH = 45- 70%                  🌙 New – 22% waxing