ABSTRACT
This chapter discusses the Cone Nebula region has mild red and blue nebulosity with a range of star intensities. The original version of the Linear uses the SkyWatcher SynScan motor control board and handset. It has a substantial and detachable stainless steel counterweight bar and a choice of Losmandy or Vixen clamps. The SynScan unit loses its sense of time and place on power-down and requires manual initialization on each power-up. The initial trials used prime lenses fitted to a digital camera. This camera has reasonable deep-red sensitivity that extends up to 720 nm, is weather-sealed and has a provision for remote power through an adaptor in the vertical grip. The processing was kept simple and consistent to show up the image differences between the cameras. The RGB images had noise reduction applied, followed by saturation boost and a convolution blur in preparation for combining with the enhanced luminance data.
