Celestial hemisphere:  Northern  ·  Constellation: Cygnus (Cyg)
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Sh2-101, Tulip Nebula, David Dearden
Sh2-101, Tulip Nebula
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Sh2-101, Tulip Nebula

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Description

There was a lot of smoke/haze in the air, which I think really hurt the image. It took me a while to find the right pattern of stars. I got a little over an hour’s worth of imaging, then the mount bumped and I had to do a meridian flip, which was successful. However, a little over an hour into imaging after the flip, my USB connection went flaky and the session stopped so I didn’t get as much as I should have. Overall, this didn't turn out too well, but I'm trying to include failures here as well as successes. I believe the bright star in the bottom left of the image is in the location of Cygnus X-1, the famous X-ray source/black hole. That's actually the star I guided this on.

Date: 14 Aug 2012

Subject: Sh2-101, Tulip Nebula

Scope: AT8IN + 0.5x Antares telereducer

Filter: none

Mount: CG-5 (Synta motors)

Guiding: Orion ST80 + 0.5x Antares telereducer + DSI Ic + PHD

Camera: DSI IIc

Acquisition: Nebulosity 3.1.0

Exposure: 33x240 s

Stacking: Neb 3, bias included, normalize first, trans+rot align, 1.25 SD stack

Processing: crop, color balance, levels & curves, one layer GreyCStoration, unsharp mask another in N3. Layer mask combine the layers, star color enhance, GradientXTerminator, star size reduction, saturation boost all in CS6.

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Sh2-101, Tulip Nebula, David Dearden