Category: Solar scraps

Saturday, June 25, 2005
Two sunsets
Yesterday it was very hot and humid with 34 degrees Celsius and 90% humidity. Late in the afternoon some really big thunder clouds where forming. Around 19.00 hours UT the Sun was setting behind one of these huge clouds. It was quite a spectacular site as you can see on the image below on the left (click to enlarge). The image was shot with the Nikon Coolpix 775 with automatic settings.

The image on the right shows a sunset on the German island of Ruegen, about two weeks ago. The sun sets just behind Cape Arkona, the north cape of Germany. The image was shot with the Canon MVX25i with a resolution of 640x480 pixels.

image image

Click on images to enlarge

Posted by Math on 06/25 at 03:57 PM | (0) Comments | filed in: Solar scraps | Print
Monday, May 02, 2005
More detailed image of Sunspot 756

Here’s a more detailed image of sunspot 0756. The image was also shot on Sunday 1 May 2005. The telescope used was the TAL 100RS with a 15mm Vixen Lanthanum. The image was shot with the Coolpix 4500 and Baader IR/UV cut filter and Baader Contrast Booster. The cameras settings were 2272x1704, 1/60sec, f/5.1, iso 100 and 4x optical zoom.

The image is stacked out of 13 original images using Keiths Image Stacker. Unsharp Masking and level correction where applied.


Posted by Math on 05/02 at 02:57 PM | filed in: Solar scraps | Print
Wednesday, August 04, 2004
Testing the Baader Fringe Killer and Continuum Filter

Last week I tested a few Baader filters with the 4-inch TAL refractor mounted on the EQ6. I only used the Baader Solar Filter (ND=5). I started with a 32 mm plossl. This eyepiece gives a magnification of 31x. The sun’s granulation was very easy to detect. The big group of sunspots (652) was near the western limb of the Sun. There where some

Posted by Math on 08/04 at 02:28 AM | filed in: Solar scraps | Print
Saturday, July 17, 2004
First results Baader AstroSolar Photographic Filter

Yesterday I tested the Baader AstroSolar Photographic Filter in combination with the Baader Kontinuum filter. This combination only lets a small part of the spectrum (540nm) get through and should give high contrast in the sunspots and granulation. Here are the first results. The images where taken with the Nikon Coolpix 4500 mounted on

Posted by Math on 07/17 at 02:01 AM | filed in: Solar scraps | Print
Friday, May 21, 2004
Practicing for the Venus transit

On May 16th I made some test images of the Sun (practicing for the Venus transit). I used my TAL 200K with a full aperture solar filter made from Baader Astro Solar Safety Film. The eyepiece used is a

Posted by Math on 05/21 at 02:01 AM | filed in: Solar scraps | Print
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