Celestial hemisphere:  Northern  ·  Constellation: Cepheus (Cep)  ·  Contains:  HD214088  ·  HD214369  ·  HD214764  ·  HD215286  ·  HD215588  ·  HD215605  ·  HD215606  ·  HD215771  ·  HD215806  ·  HD215835  ·  HD215907  ·  HD239999  ·  HD240047  ·  HD240068  ·  LBN 501  ·  LBN 502  ·  LBN 506  ·  LBN 511  ·  LDN 1192  ·  LDN 1197  ·  LDN 1200  ·  NGC 7380  ·  PK105+00.1  ·  PK107-00.1  ·  Sh2-138  ·  Sh2-139  ·  Sh2-142
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The Wizard Throws a Fireball, mlewis
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Getting plate-solving status, please wait...
The Wizard Throws a Fireball, mlewis
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Description

So my whimsical title refers to the Wizard Nebula, shown in the upper left of this image, and a Sharpless Catalogue object, Sh2-139, in the lower right of the image, which for the purposes of the title of the post vaguely resembles a fireball 😁.  The Wizard Nebula is an area of active gas and dust surrounding the open star cluster NGC 7380, located approximately 7200 light years away. Sh2-139, a lesser known and less frequently imaged object, is thought to be ionized by 2 supergiant stars and lies at least 10,700 light years distant.

This is the first image captured with my recently upgraded remote setup in Arizona. The data was taken partially in person while I was still there and then also remotely once I had returned home. The modifications to my setup added a through the mount power cable and a power/usb distribution box, plus a rotator to the image train. The modifications went smoothly,but there have been some guiding issues since the upgrade. I initially assumed it was related to my changes, but my friend has also been experiencing the same issues so for now it represents a bit of a mystery. The issues have been well in excess of any guiding problems I have previously seen in my ~3 years of imaging remotely from there, and in this case caused me to have to discard a third of the 12 hours of data I collected on these targets. The rotator was helpful in composing this frame, and in spite of the tracking issues, I was still able to make what I consider to be a very pleasing image out of the remaining 8 hours of data collected. The palette is a modified SHO palette, with  the channels normalized to limit the green and allow the other colors to show through.

In this image narrowband filters were used to capture the nebulae and RGB filters were used to capture the stars. This was originally considered to be test data, so no bias or flat frames were taken, but eventually I decided to process it, and it would seem for this image at least, those support frames are not greatly missed.

As always comments and critiques are most welcome.

ML

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