Lorenzo Comolli's Astronomy HomePage

Click on the image for a Color high res version. MOUSE OVER for Luminance only. Look also to: H-alpha only hires , Luminance only hires.

LBN 437 is a faint dust nebula in Lacerta. The interesting feature of this field is the presence of the H-alpha emission of Sh2-126, part in front of LBN 437. The front of LBN 437 also has a strong H-alpha emission, as can be noticed from the H-alpha only B/W image.
Note about processing: this image has been processed by Edoardo Radice with PixInsight and then refined by Lorenzo Comolli with Photoshop. Thanks for the collaboration! Look also at Edoardo's post on Astrobin.

Technical Data
Optics	TEC 140
Focal Length	1011 mm
Focal Ratio	f/7.2
Exposure Time	Total 7 h 10 min, composed of Ha 3.5 h, LRGB 120:30:30:40 min (single exp of 30 min for Ha, 10 min for LRGB)
CCD	SBIG STL-11000M @-30°C
Location	Saint Barthelemy, Porliod (AO, Italian Alps) at 1900 m height
Date	10 October 2015
Mount	Gemini G-41
Tracking	Lodestar on an 80mm f/5 refractor
Temperature and humidity	T= (+7 to 0) °C, RH=(70 to 90) %
Sky brightness at zenith (with SQM-L)	21.3 mag/arcsec^2
Notes	Very transparent night.