M 27, 



    
        

            Tom Harrison
M 27, 



    
        

            Tom Harrison

Equipment

Imaging Telescopes Or Lenses
RCOS 12.5" Truss
Imaging Cameras
SBIG STL6303e
Mounts
Paramount ME
Filters
Astrodon Tru-Balance Generation 2
Accessories
PIR · Off-Axis Guider Homeyer
Software
Maxim DL
Guiding Telescopes Or Lenses
RCOS 12.5" Truss
Guiding Cameras
SBIG STL6303e

Acquisition details

Dates:
July 20, 2004
Frames:
24x600" (4h)
Integration:
4h
Avg. Moon age:
2.80 days
Avg. Moon phase:
8.60%

Basic astrometry details

Astrometry.net job: 129364

Resolution: 2059x1429

Locations: Tom Harrison, Fort Davis, Texas, United States

Data source: Own remote observatory

Remote source: Non-commercial independent facility

Description

DETAILS: Imaged with the 12.5" Truss RC (RCOS Optical Systems) July 20, 2004, using a Precision Instrument Rotator to find the brightest guide star, at f9, with unbinned Luminance, and guided by the AO-7 on a Paramount ME German Equatorial Mount. Camera is an ST-10XME. Luminance is two and one-half hours, with 30 minutes each of LRGB binned 2. All allignment of reduced frames (bias, darks, flats) done in RegiStar. CCDSharp, MaxIm DL, and Photoshop CS with a variety of plug-ins used in the processing. RGB combine ratios were 1:1.1:0.9 using AstroDon TruBalance filters.

COMMENTARY: M27 is a bright, well-defined, and popular imaging target in the Constellation Vulpecula. It is a planetary nebula resulting from the demise of a sun-like star through the various evolutionary stages to its present white dwarf status, puffing off its outer atmospheres and bombarding the gases and dusts with high-energy illuminating radiation, causing expanding shock waves. M27 is approximately 800-1000 light-years distant, about 2-3 light-years in diameter.

Comments

Histogram

M 27, 



    
        

            Tom Harrison