NGC 1491 an emission nebula in Perseus. Stack of two 10 minute exposures through 5-inch AP apo refractor at f/6 with Canon Digital Rebel camera at ISO400.
NGC 1491 nebula in Perseus, taken Oct 15, 2007 with 5-inch apo refractor at f/6 with Canon 20Da at ISO 800 for stack of 3 x 10 minute exposures. Some haze. Used ST402 guider. Some RA tracking error (AP600E was acting up just before motor failure). One of the Finest NGC Objects.
California Nebula, with stack of 3 x 12 minute exposures with TMB 92mm apo and Canon 5D MkII at ISO 400 and Borth 0.85x Reducer/Flattener for f/4.6. Dawn prevented more exposures.
