Hemisphere:  Northern  ·  Constellation: Orion (Ori)
Lower's Nebula (Sh2-261) in Ha + RGB (Version 1), 



    
        

            Scott Davis
Lower's Nebula (Sh2-261) in Ha + RGB (Version 1)
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Lower's Nebula (Sh2-261) in Ha + RGB (Version 1)

Acquisition details

Dates:
Feb. 9, 2015 ·  Feb. 12, 2015 ·  Feb. 14, 2015
Frames:
Astronomik 6nm Ha Clip-In Filter: 116×300(9h 40′) ISO1600
One-Shot Color: 41×300(3h 25′) ISO1600
Integration:
13h 5′
Darks:
17
Flats:
40
Flat darks:
40
Bias:
40
Avg. Moon age:
22.23 days
Avg. Moon phase:
49.12%
Bortle Dark-Sky Scale:
5.67

Basic astrometry details

Astrometry.net job: 544698

RA center: 06h09m04s.3

DEC center: +15°4225

Pixel scale: 1.792 arcsec/pixel

Orientation: 179.960 degrees

Field radius: 0.750 degrees

Resolution: 620x470

File size: 245.7 KB

Locations: My Backyard, Clovis, California, United States; Big Stump, Kings Canyon National Park, CA, United States

Description

Lower's Nebula, catalogued as Sh2-261 or LBN 863, is a large hydrogen emission nebula located in the constellation Orion. Its distance from Earth is estimated to be approximately 3,260 light years.

RGB data was captured from Big Stump in Kings Canyon National Park. Hydrogen data was captured from my backyard in Clovis, California.

This is Version 1, which is identical to Version 2 except that Version 2 uses 10-minute subs for the Ha frames instead of the 5-minute subs used in this version.

Version 2 Link: http://www.astrobin.com/159822/

Comments

Sky plot

Sky plot

Histogram

Lower's Nebula (Sh2-261) in Ha + RGB (Version 1), 



    
        

            Scott Davis