Saturday, 20 June 2015

Ha Full Disk Comparisons - 10th June

I did a comparison of the Ha full disk with my 2 different setups; the first was taken with the Coronado DS40 at 650mm focal length, the second with the ED80 and the Daystar Quark.  Presented at this size there is little between the 2 disks, but the difference is the image size, the latter image is 3 times the size, and so when you 'zoom in' there is a lot more detail to be seen.  Of course there is a time and a place for each image - the first is a single capture and the little 40mm aperture is tolerant of poor seeing conditions, the latter being a mosaic is much more susceptible to variations in both transparency and seeing.  What it does show is that the Quark has a nice tight bandpass!