ABSTRACT
Fainter objects, longer focal lengths and extended imaging sessions challenge our techniques, equipment and patience. While some of the total exposures have run into several hours, that was on account of the camera operating above ambient temperature and more out of interest, to see how much background detail could be extracted. The challenges are similar to those already encountered, including optimizing focusing and tracking. These requirements are made all the more acute due to the longer exposure times and higher magnifications. Deep-sky imaging tests technique, equipment (and patience) to the limit and one should be prepared for some failures and near-misses. The flip side of that is the extreme satisfaction that accompanies a successful imaging run and subsequent processing. For many others, the invention required to overcome practical shortcomings, sustained operation, novel setups and remote operation adds another dimension to the hobby.
