clear sky chart

Job 9:9

Job 9:9-10
9 He is the Maker of the Bear and Orion,
the Pleiades and the constellations of the south.
10 He performs wonders that cannot be fathomed,
miracles that cannot be counted.

Sunday, July 28, 2013

M16, Hα & Oiii

I've imaged M16, the Eagle Nebula last year with the dslr.  This time, I used the CCD with Hα and Oiii.  If I had a Sii, I could have dome a hubble palette.  There was very little Oiii signal in this object.

Scope:    Celestron C6N
Mount    Celestron CG5
Camera  Orion Starshoot G3
Filters    Celestron Oiii, Orion Hα 7nm
Exposures  5 X 5 minute Ha, 6 X 5 min Oiii
Processing  Deep Sky Stacker, color combining and post processing in Photoshop CS5

This is the original size of the image put out by this camera.

If  I were to image this again, I think I would do an RGB with an Hα luminance.

Although this is a low resolution camera, I like imaging with this over the DSLR, as the exposure time is much less.  The sensitivity is much better than the DSLR.  The vignetting is almost nil, and with the exception of about a dozen hot pixels, the noise is way better.  I could never have taken a picture this clean with a total of 10 frames with the DSLR's, let alone get the fainter nebulosity on the bottom of the image. 

The following is the monochrome Hα image.

No brightening of this image was performed.  Noise reduction in the dimmer areas was done, and the star sizes were made slightly smaller, but generally, this is what I ended up with coming out of DSS.


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