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Ron Wodaski
July 20, 2006
1260
post image

Acquisition Details

Equipment card

Description

This high-resolution image of M57 was taken with a 20 Ritchey-Chretien at New Mexico Skies. The seeing was a little better than average, so details show up very well. This is actually a fairly short exposure - NGC1296, the galaxy below and to the right of M57, is fairly faint. The shorter exposures helped to preserve the details in M57; longer exposures would have smeared them somewhat. The image is a composite of 15 20-second images. The Ritchey used an AP focal reducer to yield f/6.1. This fast focal ratio allowed me to get good detail in such short exposures. I then took a half-dozen 3-minute exposures to provide more body/depth in the areas surrounding M57. The two sets of images were merged in Photoshop using layers. Color exposures were binned 2x2.



M101
1512

July 20, 2006


Crab Nebula Up Close and Personal
1294

July 20, 2006


Horsehead Nebula with 20 RC
1276

July 20, 2006


M94 high resolution image
1268

July 20, 2006


M74 with 20 Ritchey-Chretien
1182

July 20, 2006