Image of the day

Captured by
RICHARD COFER

VdB 141 Ghost Nebula

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Posts Made By: Roland Christen

October 1, 2008 12:58 AM Forum: CCD Imaging and Processing/Deep Sky

vdB142 with 300mm Mak

Posted By Roland Christen
I did a bit of smoothing with a median filter, which allowed bringing up more of the fainter detail. The image loses some of the small scale detail, but looks better, I think. Which one is better?

Marj says it looks more like a dog than an elephant trunk. To me it looks more like a Reindeer. No, actually the more I look at it, the more it looks like a Moose.

Rolando

October 1, 2008 01:47 AM Forum: CCD Imaging and Processing/Solar System

Terminator: Copernicus to Pitatus

Posted By Roland Christen
Absolutely fantastic!

Rolando

October 3, 2008 03:56 PM Forum: Astro-Physics

Big One - first 6 months

Posted By Roland Christen
And here are the tracking results at -96 F (Alpha = RA).

Rolando

October 7, 2008 12:56 AM Forum: CCD Imaging and Processing/Deep Sky

vdB141 region

Posted By Roland Christen
The dust man strikes again! grin I wish I had such clear and dark skies. All I can manage around here are narrow band images cwy

Nice work.

Rolando

October 7, 2008 12:58 AM Forum: Landscape Photography

New Lens and Camera

Posted By Roland Christen
Oh man, that is nice!

Rolando

October 13, 2008 08:59 PM Forum: CCD Imaging and Processing/Deep Sky

Full M42 Luminance from Tony Hallas

Posted By Roland Christen
I had some fun with the image, cropped a piece of it and did some contrast enhancement to show some of the smaller detail near the center. I maybe would call this the Inside of a Stomach.

Rolando

October 14, 2008 12:14 AM Forum: CCD Imaging and Processing/Deep Sky

Full M42 Luminance from Tony Hallas

Posted By Roland Christen
nd finally, the full color version, 25% of full size.

Rolando

October 14, 2008 07:11 PM Forum: Refractors

Schott FK61 glass

Posted By Roland Christen
Schott does not make FK61. The Chinese make an ED glass called H-FK61 which is a first generation ED glass similar to Ohara FPL51. There is no availability of any Schott ED glass last time I checked with them. They just don't make it in any production quantity.

You will find just about all ED lenses made in China will use the Chinese made H-FK61 material, no matter what the US marketeers try to tell you.

Rolando

October 15, 2008 03:07 PM Forum: Refractors

Rolando, any idea what glass TV uses?

Posted By Roland Christen
All ED materials are an alternative to fluorite. It does not necessarily mean FPL53.

Rolando

October 15, 2008 03:10 PM Forum: CCD Imaging and Processing/Deep Sky

Round 2 - Alignment help?

Posted By Roland Christen
The filters do not cause this. You are using a Meade focal reducer? You are getting lateral color, which means that the colors do not line up laterally (i.e. the image size is different for different colors)

Rolando

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