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Astrophotography by Bob Franke

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M34 Open Cluster


      Click the full screen zoom button           ^
     
Click the image to Zoom and Pan              

 

Click here to view the image without Zoomify (1400 x 1000)  

Instrument

12.5" RCOS @  ~f/9 (2880 mm fl) at 1.28 arcsec / pixel.  Zoomify image scale is 1.65 to 2.203 arcsec / pixel.

Mount

Paramount ME

Camera

SBIG STL-11000 w/ internal filter wheel, AstroDon Gen-1 Filters

Acquisition Data

11/1/2009 to 11/15/2009 Chino Valley, AZ... with CCDAutoPilot3 & CCDSoft.

Exposure

Lum   90 min. ( 6 x 15 min. bin 2x2)

RGB  180 min. ( 4 x 15 min. bin 2x2, each)

Software & Processing Notes

CCDSoft, CCDStack, Photoshop CS w/ the Fits Liberator plugin, Noel Carboni's actions and Russell Croman's GradientXTerminator.

PixFix32 (pre-beta) to repair hot/cold pixels and column defects.

eXcalibrator for (b-v) color calibration, using 7 stars from the NOMAD1 database.

CCDStack to calibrate, register, normalize, data reject, combine sub exposures & color combine for the LRGB.

PhotoShop CS3 for non-linear stretching and LLRGB combine

Comment

North is to the bottom, I think it looks better up side down.

M34 is an open cluster, with about 100 stars, in the constellation Perseus. At a distance of 1,400 light, years its apparent size is slightly larger than the full Moon. The age of the cluster is about 180 million years. M34's discovery is attributed Giovanni Batista Hodierna, sometime before 1654, and independently discovered later by Charles Messier on August 25, 1764.