Celestial hemisphere:  Southern  ·  Constellation: Orion (Ori)  ·  Contains:  Flame Nebula  ·  IC 434  ·  NGC 2023  ·  Orion B
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IC 434, Barnard 33, NGC 2023, Horsehead Nebula, 6 Nov 2012, David Dearden
IC 434, Barnard 33, NGC 2023, Horsehead Nebula, 6 Nov 2012
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IC 434, Barnard 33, NGC 2023, Horsehead Nebula, 6 Nov 2012

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Description

One of the easiest finds (from Alnitak). Good conditions tonight, but I'm again having a bit of trouble with the image drifting. Beginning temp -2.5 °C. As last night, tracking failed about 3 hours into the run. I think this is about the time of meridian crossing, so it is probably a balance issue.

The revision was processed with StarTools 1.3 after normal stacking in Nebulosity 3.

Date: 6 Nov 2012

Subject: IC 434 (emission), Barnard 33 (dark) The Horsehead Nebula; NGC 2023 (reflection)

Scope: AT8IN+High Point Scientific coma corrector spaced properly

Filter: None

Mount: CG-5 (Synta motors)

Guiding: Orion ST80 + DSI Ic + PHD 1.13.6

Camera: DSI IIc (1.5 A, 6.0 V, T = -4 °C)

Acquisition: Nebulosity 3.1.2, no dither

Exposure: 38/60 x 300 s

Stacking: Neb 3, bad pixel map & flats, bias included, normalize first, trans+rot align, 1.5 SD stack

Processing: Digital development, power stretch, Keller stretch, saturation boost, GreyCStoration; CS6 GradientXTerminator, Astronomy Tools deep space & space noise reduction, star color enhance.

Comments

Revisions

  • IC 434, Barnard 33, NGC 2023, Horsehead Nebula, 6 Nov 2012, David Dearden
    Original
  • IC 434, Barnard 33, NGC 2023, Horsehead Nebula, 6 Nov 2012, David Dearden
    B
  • Final
    IC 434, Barnard 33, NGC 2023, Horsehead Nebula, 6 Nov 2012, David Dearden
    C

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IC 434, Barnard 33, NGC 2023, Horsehead Nebula, 6 Nov 2012, David Dearden