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VdB 141 Ghost Nebula

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Posts Made By: Roland Christen

March 19, 2014 11:42 PM Forum: CCD Imaging and Processing/Deep Sky

etaCarina widefield by Dave Jurasevich

Posted By Roland Christen
This is a 9 panel mosaic taken with the AP 12" F8 astrograph down at Las Campanas in Chile, by Dave Jurasevich. The image was taken remotely over a period of several nights.

Rolando

March 20, 2014 07:06 PM Forum: CCD Imaging and Processing/Deep Sky

NGC 3582 Hubble Palette

Posted By Roland Christen
This colorful nebula was captured with our remote observatory at Las Campanas in the Chilean Andes. 12" AP Mak-Cass on 1600 mount operated remotely by Howard here at AP over a period of 2 nights.

This image was cropped from the larger format and is reduced to 40% of the original resolution.

So now we need a name for it. Any ideas?

Rolando

March 20, 2014 07:10 PM Forum: Astro-Physics

NGC3582 in Hubble Palette

Posted By Roland Christen
This colorful nebula was captured with our remote observatory at Las Campanas in the Chilean Andes. 12" AP Mak-Cass on 1600 mount operated remotely by Howard here at AP over a period of 2 nights.

This image was cropped from the larger format and is reduced to 40% of the original resolution.

So now we need a name for it. Any ideas?

Rolando

March 21, 2014 04:12 AM Forum: CCD Imaging and Processing/Deep Sky

NGC 3324 - Gabriela Mistral Nebula

Posted By Roland Christen
This is a faint extension of the Carina Nebula that I posted before.

Rolando

March 22, 2014 02:29 AM Forum: CCD Imaging and Processing/Deep Sky

NGC4038 -Antenna Galaxies

Posted By Roland Christen
Preliminary image consisting of 40 minutes of RGB data taken last night with the 12" Astrograph at Las Campanas. Hope to get more data over the next week.
Rolando

March 25, 2014 05:51 PM Forum: Astro-Physics

What is orthogonal error

Posted By Roland Christen
We get these questions a lot about orthogonality and how it affects pointing in a mount. Here is a simple drawing showing what causes orthogonal errors.

Rolando

March 25, 2014 08:10 PM Forum: CCD Imaging and Processing/Deep Sky

NGC1763

Posted By Roland Christen
Another obscure and very faint nebula in the southern skies. Image taken by Dave Jurasevich with the AP 12" F8 astrograph in Chile.

I dub it the Smoke Rings nebula.

Rolando

April 3, 2014 03:52 AM Forum: CCD Imaging and Processing/Deep Sky

Centaurus A relativistic jet

Posted By Roland Christen
We got some more data from our Chile remote observatory and I processed it and found that the image showed the jet that is coming from the black hole in the core of this galaxy.

Rolando

April 8, 2014 12:27 AM Forum: CCD Imaging and Processing/Deep Sky

M87 and Friends

Posted By Roland Christen
We had a rare clear sky here and it was reasonably steady too. So, while I was testing mounts, I did a quick 20 minute exposure of M87 with my 160F7.5 EDF refractor and a QSI683 CCD camera. This is a single 20 minute luminance, and it showed the jet coming out of the core quite nicely.

This image is a small size crop of the area around M87

Rolando

May 27, 2014 03:24 AM Forum: CCD Imaging and Processing/Deep Sky

M100 and friends

Posted By Roland Christen
Hi All,

Since nobody has posted anything lately, I though I would take a night out and image a few galaxies around the Leo area. M100 is one of my favorites. This is a combination of 15 x 10 minute exposures. The skies around here were transparent, but heavily light polluted. Nevertheless, the faintest objects visible in this exposure, just above the noise level are 18.5 mag galaxies. The faint outer arms of M100 are just visible in this exposure.

The image shows M100, NGC 6312 to ward the upper left, two 14 mag galaxies NGC 4323 and NGC 4328 to ward the right and upper right, IC783 at 13.8 just being cut off toward the bottom left, and a number of others which don't seem to appear on my planetarium program.

There are some gradient lines at about 45 degrees, which originated in the camera. The image did not have flat field subtraction, thus the gradients.

Rolando

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