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Rich Maruzzi | all galleries >> Astrophotography >> Open Clusters > M25_300mm
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Sep-06-05, 22:32 EDT

M25_300mm

M25 (IC 4725)
Size:32'(19 ly) Mag:4.6 Dist:2,000 ly Age:90 my

Camera: Canon EOS 300D Digital Rebel
Lens: Sigma 70-300mm APO @ 300mm, f/6.3
Exposure: 9x20s=3 min @ ISO1600
Mount: ETX-90EC polar aligned
Processing: Dark, flat and bias calibration, stacking and digital development in IP 2.5. Alignment in Registar.
Levels, curves, skyglow & noise removal and sharpening in Photoshop CS with Neat Image. Image cropped.


other sizes: small medium large original auto
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