• NGC 457 in Cassiopeia, The Owl Cluster
    • NGC457 in Cassiopeia, Owl Cluster
    Annotated image
  • NGC 457 is an open cluster with about 60 stars
  • identified as true members of the cluster
  • and with about 150 stars in the field.
  • Hover over the image for an annotated view.
  • Date:  31 July 2024
  • FOV:  approximately 60' × 40'
  • Telescope:  Stellarvue SVX102T + SFFX-1 flattener
  • (738.18mm, nominally 714mm, f/7)
  • Guiding:  ZWO ASI120MM mini mono guide camera,
  • Stellarvue F050G 50mm guide scope
  • Computer:  ASIair pro Raspberry Pi
  • Mount:  iOptron CEM40
  • Camera:  ZWO ASI071MC pro cooled to -10°C gain 90
  • Pixel size:  4.78 μm
  • Resolution:  1.336 arcsec/pixel
  • Filter:  Optolong UV-IR cut filter
  • Stacking:  forty-seven 240 second frames using Pixinsight
  • Total Time:  3 hours 8 minutes
  • Processing:  Pixinsight – SPCC, DBE, SPCC, BlurXT, NoiseXT, GHS, HST, Mask,
  • PMath GHS + HST + Mask, HDR4, Sat, DynCrop/Scale
  • Location:  Darling Hill Observatory near Vesper, NY