Image of the Month
Sh2-240. 20March 2018. 13x10min Ha CDS600D 135mm by Alan Clitherow
The Sh2-240 image is a narrow-band hydrogen image taken through a 135mm camera lens, stopped down a little to get decent star shapes to the edges; very faint object sometimes called the ‘Spaghetti Nebula’. Thirteen ten minute minute exposures processed in Photoshop.