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Galaxies M66 and M65 in Leo.

Spiral galaxies about 35 mln light yrs away.  One of them (M66) is distorted, probably due to the gravitional influence of the other.

 

Image info

Telescope:  Celestron 9.25" Schimdt-Cassegrain at f/6.3

Focus:  Prime focus

Filter:  Celestron LPR filter

Mount:  Vixen GPD with Skysensor2000

Camera:  Modified Canon EOS 300D, at ISO800

Guiding:  700mm refractor guidescope, SAC7 camera, autoguided with Guidedog software

Exposure:  Total 52 mins (35 x 90s)

Date:  5th March 2005

Processing:  RAW file conversion, Offset and Dark subtraction, flat fielding, registering and stacking done in IRIS. Curve stretching in Photoshop CS, noise reduction in Neat Image.

Comments

The strategy of taking shorter, but more frames at ISO800 (rather than 400) seems to have paid off.  Quite a smooth image, especially in the outer dim parts of the galaxies.

 

 
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