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IC417 The Spider
© Terry McKnight 2021
Credit Terry McKnight

IC417 The Spider

IC417 The Spider

Telescope: William Optics ZS103 with 0.8 reducer

Camera: ZWO ASI 183MM

  • 29 x Ha 360 seconds at Gain 111 Offset 8
  • 28 x OIII 360 seconds at Gain 111 Offset 8
  • 42 x SII 360 seconds at Gain 111 Offset 8

Mount: SW HEQ5 Pro with Rowan

Processed in PixInsight, Photoshop CS 2021 and Topaz Denoise AI


All images acquired Feb 10th to 12th 2021



Terry McKnight


© Terry McKnight 2021
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3 hours ago, AstronomyUkraine said:

Very nice image, some great detail in the nebula. I'm just a little confused about the filter data. Should the 42 x OIII be 42 x SII?

It was indeed - well spotted I’ve altered it.

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