This week the New Forest Observatory features a rare image (for the NFO) – that’s one of very few images taken with the Canon 200mm prime lens on a Canon 5D MkII DSLR. This was during the phase when I was checking the lens itself out to see if it was up to doing astrophotography (it was). This whole of Cassiopeia image is an 8-frame mosaic with each frame being about 2-hours worth of 5-minute subs at ISO800.
