The Horsehead Nebula in Hydrogen Alpha

Horsehead Nebula in H alpha
All Images Copyright Steve Cannistra

Please click here or on image for a higher resolution view of this region.
Please click here for a composite image between this Ha shot and my previous Canon 10D photo of this region.

Magnitude:  Unknown
Distance: 1600 light years (Horsehead Nebula, aka B33); 826 light years (Alnitak- Zeta Orionis); 1165 light years (Sigma Orionis)
RA: 5h 40m 56s
Dec: -1 degrees 56' 21"

This is a first light image in Hydrogen Alpha for my SXV-H9 CCD camera, taken in moonlight on 2/7/04.  I am excited about the amount of detail present in the Horsehead, captured with the combination of the small Sky90 plus SXV-H9.  Color data will be added in the next few months as weather and time permit.  Please click here for details regarding the Horsehead nebula region.

Photographic Details:

Date:  February 7, 2004.
Scope:  Takahashi Sky 90 at f4.5 with field flattener/focal reducer, piggybacked on LX90 (which is mounted on a Meade Superwedge).
Autoguider:  STV with e-finder.
Camera:  SXV-H9.
Filter:  Hydrogen Alpha, Astronomik.
Exposures:  19 x 5'.
Conditions:  Temperature 23 degrees F; below average transparency; average seeing; breezy; partly cloudy.  The evening turned mostly cloudy and windy by 11 PM, so I packed it up (I had hoped to shoot the Cone Nebula as well).
Dark frame calibration, alignment, sigma combine, and DDP adjustments performed in ImagesPlus.  Levels and curves adjustments in Photoshop.  Selective smoothing of certain regions performed using the Neat Image plug in (v3.17 Pro Plus).

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