The Horsehead Nebula in Orion
Speed test with 10" f/3.9 Astrograph
Uploaded 1/31/16

 Back in the "old" film days, you had to have very transparent conditions, dark skies and at least 10 minutes with a fast scope to get any image at all of the Horse head nebula in Orion - Barnard 92. As a demonstration of what my water cooled CCD with microlenses can do with our new fast Orion Astrograph (with Baader MPCC coma corrector), I took a series of images of this object, and discovered that even a 1 second exposure (binned 3 x 3) was recording it quite well. This is going to be a fantastic combination for deep sky and comet imaging! Nothing more a gamma curve stretch was used here.
1 second exposure
2 second exposure
4 second exposure
8 second exposure
And of course, we need color images too - here is 1 second each filter, red - blue - green combined to a color image:
1 second exposure per RGB channel
8 seconds exposure per RGB channel:
Instrument: 10" f/3.9 Orion Astrograph Newtonian Mount: Astrophysics 1200 QMD CCD Camera: SBIG 10XME NABG with Enhanced Water Cooling Guider: Meade DSI Pro w/80mm piggyback refractor Exposure: 1s to 24s for color AstroDon RGB Combine Ratio: 1: 1.05: 1.2 Location: Payson, Arizona, Elevation: 5150 ft. Sky: Seeing FWHM = 3 arcsec , Transparency 9/10 Outside Temperature: 25 F CCD Temperature: -20 C Image Processing Tools: Maxim DL: Calibration, deblooming (Starizona Debloomer), aligning, stacking PixInsight: Curves, Deconvolution Photoshop CS2: Curves, Color Correction, Gradient removal (Grad Xterminator), Cleanup HOME GALAXIES EMISSION NEBS REFLECTION NEBS COMETS GLOBULARS OPEN CLUST PLANETARIES LINKS