Cederblad 51 (John Dziuba)

Celestial hemisphere: Northern · Constellation: Orion (Ori) · Contains: B225 · B30 · B31 · B32 · HD245409 · HD245457 · HD35364 · HD35405 · HD35909 · HD35956 · HD36104 · HD36262 · HD36263 · HD36308 · HD37171 · LDN 1573 · LDN 1577 · LDN 1580 · LDN 1581 · LDN 1582 · LDN 1583 · LDN 1584

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Cederblad 51

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Cederblad 51

This is a beautiful area in the Orion constellation containing the small reflection nebula Cederblad 51. It is part of the larger SH2-264 complex which is often referred to as Orion's Head. The region lies is roughly 1,300 light years away from us.

There are not many high quality wide field images on Astrobin to draw inspiration from. So, I chose to stick very close to the natural color corrected RGB with minimal color boosting. The RGB image was then blended with the Ha signal.

The abundance of Ha emission, dark nebulae and of course the reflection nebula itself made this a very technically challenging process. I was able to bring in the Ha data without overpowering the image with careful continuum subtraction. I really enjoy creating dark nebula images with an Ha component. I have a few more in the queue that I am working on.

Some notes on acquisition, this image was captured with my FSQ106 reduced to f3.6. So, the extensive integration time really went a long way here. My RiDK 400 was imaging the reflection nebula alone at 2800mm focal length. At the same time the 380mm FSQ was capturing the data for this image. The FSQ is just along for the ride as it is piggy backed on top of the larger scope.

I quickly realized that the wide field image was probably going to be more compelling and unique, so I processed this one first. In a few weeks I will publish the close-up version that I captured with the RiDK.

Thanks for stopping by

CS, HNY

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D

Sharpless2 Objects
Dark Nebula
ASI 6200 MM Pro
Southern Hemisphere Astro
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Takahashi Refractors
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Status	Advanced success
Started	...
Astrometry.net job	8955580
PixInsight job	GSF3K2TVEPUD99SWVFCLA72Q372B0ABV
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	05h31m27s.37
RA (top/left)	05h25m07s.79
RA (top/right)	05h38m50s.25
RA (bottom/right)	05h37m52s.14
RA (bottom/left)	05h23m58s.100

Dec (center)	+12°00′20″.1
Dec (top/left)	+10°08′41″.3
Dec (top/right)	+10°23′41″.1
Dec (bottom/right)	+13°51′30″.9
Dec (bottom/left)	+13°36′20″.5

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