Archive for April 24, 2008

Nick Howes: Sun And Prominence Images

Nick Howes contacted us recently, submitting the following images. They were captured with a DMK 21AU04.AS astronomy camera. Next week, we will be looking at some more of his work, including a multi-post article, which was originally published in Astronomy Now, a leading astronomy magazine in the UK.

The first image, which he submitted is the Sun in Hydrogen Alpha at F40, focusing on the three recent active regions (click to zoom):

He commentates the image, with:

The Hydrogen Alpha scope I use is a modified Coronado PST has been modified to 80mm aperture, using a combination of Baader Cool ERF filters, various adapters and a William Optics Zenisthstar telescope, this has massively improved both the resolution and the overall performance of the scope, which the only part remaining is the very good 0.7A etalon. I have replaced the 5mm blocking filter with the Coronado BF10.

He also submitted the second image (click to zoom):

Adding the following:

The images making up this composite were all taken on the March 30, 2008 for the high resolution surface, and April 05, 2008 for the prominences, using a DMK 21AU04.AS camera at 60 frames per second, generating over 8GB of data to process. This took most almost a day to just stack/combine and create RAW TIF files, which were then edited and composited using Photoshop CS2 and iMerge.

Furthermore, Nick notes:

With the Sun currently still relatively low in the sky, I hope you can appreciate the complexity and difficulty involved in both acquiring and creating this image.

Nick invites interested readers to contact him for more details. Please post your questions into the comments form below.

A great thanks goes out to Nick for submitting these spectacular photos!

Comments

A Very Different Look at Infrared

I speak to hundreds of folks from The Imaging Source community each week and am always amazed at the number of new and exciting applications in which our cameras are implemented worldwide.

From astronomy to zoology, many applications are unique and quite fascinating.

Here is a couple stunning pictures taken with a DBK 21AF04.AS by a gentleman from NASA .

You may know that green plants are highly reflective in infrared light. I was playing around with IR-pass and IR-block filters on my DBK 21AF04.AS one day and was struck at just how strong this effect is on one of my plants. I’m attaching an image showing what I’m talking about. I figured you may want a demo of how your DBK color cameras are sensitive to IR light.

Rus Belikov

P.S. The sharp rise in infrared reflectance of green plants is known as the “red edge” and is one of spectral biomarkers in searching for life beyond the solar system.

Below is the image, which Rus submitted:

Thanks Rus! Keeps up the good work.

profjohn

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