M13 Great Hercules Cluster NGC 6205
Globular Cluster Hercules
Magnitude 5.3 Diameter 21min


11/09/2003



Charlotte Prime focus f/4
800mm 16x Motor drive and manual guiding
Canon Digital Rebel 200 ISO 4 minutes 23 seconds
3 pictures (88s + 91s + 84s) stacked, aligned and processed with Photoshop.





06/19/2004



Walnut Cove overlook Prime focus f/4
800mm 16x Motor drive and manual guiding
Canon Digital Rebel 1600 ISO 1 minute 42 seconds
3 pictures (34s + 34s + 34s) stacked, aligned and processed with Photoshop, with another 34s picture to reduce the noise.





09/08/2005



Charlotte Prime focus f/6.3
900mm 20x Motor drive
Canon 20D 1600 ISO 13 minutes 20 seconds
40 pictures averaged.





06/06/2007



Charlotte Prime focus f/6.3
14800mm 33x Motor drive and automatic guiding
Canon 20Da 1600 ISO 32 minutes
16 pictures calibrated, aligned and stacked with ImagePlus, processed with Photoshop.




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