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NGC 281921 viewsNGC 281 is an emission nebula in Cassiopeia discovered in 1881 by Edward E. Barnard while he was searching for comets with a 5-inch refractor. This image, which needs more exposure time, is through narrowband Oxygen[III] and Hydrogen alpha filters. The Oxygen and Hydrogen gas is ionized by the young cluster of stars in the center (IC 1590). Imaged with a Takahashi FSQ106ED; SBIG ST2000xm; Baader Filters; Paramount.
NGC 281 The Packman Nebula905 viewsNGC 281, aka the Packman Nebula, is an emission nebula (H II region) in the constellation Cassiopeia. The nebula also contains the open cluster IC 1590, whose OB stars ionize the hydrogen, as well as several dark Bok globules. The image was taken with a TeleVue 140 f/5 refractor and SBIG ST2000xcm camera @ -15 degrees C on an Astro-Physics 1200 mount. Image was a total of 3 hours 40 minutes integration time (22 x 10 min guided lights; 15 darks, 64 flats, 64 bias). Individual lights graded in Images Plus 5.0; Calibrated, registered, integrated, and processed in PixInsight 1.8, with final levels adjustment in Adobe Photoshop CC.
A Large Emission Nebula in Cassiopeia379 viewsNGC 281 is a H II emission nebula in Cassiopeia containing the open cluster IC 1590, which powers the ionization of the hydrogen gas. Large dust filaments as well as Bok globules, which may be the site of future star formation, can be seen. The image is a total of 5 hrs 20 min exposure in H alpha light. Image taken with a Takahashi CCA250 astrograph and QSI683wsg camera on a Paramount ME on the nights of 13, 15 Dec, 16 Nov 2018 in Mayhill, NM (16 x 1200 sec lights @ -20 degrees C. Astrodon H alpha filter 5 nm bandwidth; 24 darks; 128 bias; 128 flats). Processed with PixInsight Ripley (x64).
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