M 97, 


            Tom Harrison
M 97, 


            Tom Harrison

Technical card

Imaging telescopes or lenses: RCOS 12.5" Truss

Imaging cameras: SBIG STL6303e

Mounts: Paramount ME

Guiding telescopes or lenses: RCOS 12.5" Truss

Guiding cameras: SBIG STL6303e

Software: Maxim DL

Filters: Astrodon Tru-Balance Generation 2

Accessory: PIR  ·  Off-Axis Guider Homeyer

Dates:Dec. 20, 2004

Frames: 21x600" (3h 30')

Integration: 3h 30'

Avg. Moon age: 9.14 days

Avg. Moon phase: 68.31%

Basic astrometry details

Astrometry.net job: 95269

Resolution: 1530x1065

Data source: Own remote observatory

Remote source: Non-commercial independent facility


DETAILS: Imaged in December, 2004 with the 12.5" Truss RC on an ME Robotic German Equatorial Mount using an ST-10XME SBIG camera at f9, employing Tru-Balance LRGB filters, and guided by an AO-7 Adaptive Optics Device. Two hours of unbinned Luminance combined with 30 minutes each of RGB color using RegiStar, MaxIm Dl, Photoshop CS and various plug-ins. CCDSharp applied to the Luminance.

COMMENTARY: M97, the Owl Nebula, is a planetary nebula in the Constellation Ursa Major at an approximate distance of 1,630 light-years. It is a complex planetary exhibiting a cylindrical torus shelll viewed in the oblique, the eyes of the Owl being made up of matter poor regions at the ends of the cylinder. At the center is a 16 magnitude star of 0.7 solar masses. Many faint background galaxies surround the nebula, most notably the one on which a brighter star is superimposed.



M 97, 


            Tom Harrison