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RICHARD COFER

VdB 141 Ghost Nebula

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Posts Made By: Roland Christen

August 14, 2014 04:08 PM Forum: CCD Imaging and Processing/Deep Sky

Helix in color

Posted By Roland Christen
We added RGB to the H-a image to achieve a near Hubble look.

Rolando

August 28, 2014 11:27 PM Forum: CCD Imaging and Processing/Deep Sky

M27 Narrowband

Posted By Roland Christen
We finally had one decent night where the clouds parted briefly and I was able to get 1 hour each of H-a, OIII and SIII. The SIII was at the end of the session where thin clouds started drifting through, so this is a very preliminary narrowband image. It was taken with my QSI 683 camera attached to a new 180F9 scope that is under test (original design made with last pieces of good glass).

I was pleased at the resolution of this setup, with the QSI working at 0.69 arc sec per pixel, and the seeing was good enough to achieve 1.4 arc sec FWHM in each 10 minute sub.

I know the image is not deep, but I did not have the skies, and the test was simply to test the imaging performance of this classic triplet lens. The scope was mounted on my 1600, which kept the guide star below 0.2 pixel RMS for these exposures. The image is cropped from the larger full frame.

Rolando

September 10, 2014 07:09 PM Forum: CCD Imaging and Processing/Deep Sky

M27 Deep

Posted By Roland Christen
This is a continuation of the M27 taken with the 180F9 EDT refractor. It consists of 1 hour wideband RGB and 4 hours of narrowband:

http://www.buytelescopes.com/content/images/thumbs/0054524_m27-deep-stretched.jpeg

Rolando

September 24, 2014 09:34 PM Forum: CCD Imaging and Processing/Deep Sky

NGC6888

Posted By Roland Christen
Here is 3 nights of work with the 180F9 EDT refractor and QSI683 CCD camera. This is a narrowband RGB in Hubble palette. 25x600 second SII, H-a and OIII. Image is 1/2 size.

Rolando

September 24, 2014 11:26 PM Forum: Astro-Physics

NGC6888

Posted By Roland Christen
NGC6888, Crescent Nebula imaged over 3 nights with Astrodon narrowband filters SII, Ha, OIII in the Hubble palette. Scope was the AP180EDT F9 refractor and QSI683 CCD camera on a 1600 mount.

Rolando

September 25, 2014 10:44 PM Forum: CCD Imaging and Processing/Deep Sky

Crescent Nebula Wide Field

Posted By Roland Christen
Here is the same object in H-alpha, of the Crescent using the shorter focus Honders and the STL11K 9 micron pixel CCD camera. These are again 10 minute subs taken over 2 nights of fair seeing. 1.6 arc sec per pixel with an average star size of 1.95 arc sec FWHM, 30 x 600 seconds. On the bottom left you can see Dave Jurasevich's Soap Bubble nebula. On the top right we have what I call the Waterfall. Lots of other little snicks and sniggles.


http://www.buytelescopes.com/content/images/thumbs/0054569_crescent-nebula-ngc6888.jpeg

September 26, 2014 11:46 PM Forum: CCD Imaging and Processing/Deep Sky

Milky Way Clouds

Posted By Roland Christen
2 panel mosaic taken with the 305mm Astrograph:

http://www.buytelescopes.com/content/images/thumbs/0054588_milky-way-and-crescent-nebula.jpeg

Rolando

October 1, 2014 10:23 PM Forum: CCD Imaging and Processing/Solar System

September Moon

Posted By Roland Christen
Had a reasonably clear evening, so shot the Moon.

Rolando

October 11, 2014 04:54 PM Forum: CCD Imaging and Processing/Deep Sky

M15 Globular

Posted By Roland Christen
Had a few nights of semi-clear weather, mediocre seeing, and with M15 at the zenith, figured what the heck. Maybe will add color in the next few days.

Rolando

October 14, 2014 10:35 PM Forum: CCD Imaging and Processing/Deep Sky

NGC6826 Blinking Planetary

Posted By Roland Christen
30 x 30 second LRGB image of the Blinking Planetary.

Rolando

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