The Window Sill Observatory

August 11, 2012

Motorized PST Etalon Demo Video

Filed under: Sun, Tutorials — Dave @ 1:28 pm

Cables disconnected for clarity

My PST has a motorized tuner which you can see in the picture. It gives fantastic control over the detail I can capture and a demo video showing the effects of small changes in tuning is shown here:

This consists of 35 frames which were captured with only 1 second of tuner movement between them. I can also turn down the motor speed for more precise control.

I read that the tuner ring varies the wavelength of the light and you can use this to identify which parts of the Sun are moving towards or away from you by the doppler effect. Something to investigate further.


August 6, 2012

Autoguiding Celestron and Skywatcher Alt-Az Mounts

Filed under: Animations, Software, Sun — Dave @ 10:44 am

DSSR now has the ability to autoguide certain brands of alt-az mounts to allow you to track and record the Sun, Moon, planets, comets, etc.

The guider can guide your mount to within 2 or 3 pixels which is good enough for solar system work. Below are some solar animations that were captured on a Coronado PST on a NexStar 4SE mount.

April 3, 2012

Solar Animation Tutorial

Filed under: Animations, Software, Sun, Tutorials — Dave @ 1:35 pm

This tutorial was produced to show the work flow involved in creating these solar animations.

You can download a zipped folder of solar Fits files to try out from here (190mb). Go direct to step 4 if you download them. Alternatively, you can download the complete set of processed PNGs here (59mb) and go directly to step 5. (more…)

March 30, 2012

Latest Solar Prominence Animations

Filed under: Animations, Software, Sun — Dave @ 12:50 pm

I was lucky to record 4 hours of unbroken solar activity during Scotland’s recent record breaking sunshine. DSSR guided my Nexstar 4SE/PST combo while it also captured 20s videos with 20s pauses between. These videos were processed in AviStack and DVS was then used to stablize the animations and add the overlay text and scale Earth.

This was the first ‘blind’ test of DFM and I relied totally on the focus meter to adjst focus. I made 3 animations from the data which are below. (right-click on videos to turn on looping) (more…)

February 14, 2012

Latest User Solar Animation

Filed under: Animations, Sun — Dave @ 10:58 am

From Robert,

Taken with Coronado SolarMaxII 60mm with BF15, Meade 3x Barlow, DMK41AU02, Celestron CGEM mount, captured as 20s clips with 40s delay using DSSR, processed in Registax 5, aligned and cropped using DVS. (more…)

November 8, 2011

Latest Testers’ Gallery

Filed under: Moon, Software, Sun — Dave @ 11:08 am

Our illustrious test team have been busy trying out the new mosaic feature of DSSR. Below are a few of their images. This is the best part of my job – looking through these great images on a large TV. It doesn’t get much better.

Click on an image to see the original – some are VERY large.


October 25, 2011

Gain v Image Quality on Solar Images – Results

Filed under: Software, Sun — Dave @ 3:26 pm

Tester Mike has created a batch of 8 solar images to compare the effects of gain, shutter speed and frame rate on solar image quality. He then offered them up to the test team to pick their favourite image and the results were very interesting. The images are shown below and the exposure settings are at bottom.


October 12, 2011

High Dynamic Range (HDR) Solar Mosaic Capture

Filed under: Software, Sun — Dave @ 6:17 pm

Today we were lucky to have some Sun and try out the MultiExposure feature of DSSR on a solar mosaic. DSSR allows you to take a series of videos at different exposure settings to cover the full range of features on the Sun. These can range from the brightest flares to the faintest prominences.

We set up a Coronado PST with an Imaging Source DMK21 at prime focus (more…)

October 3, 2011

September Testers’ Gallery

Filed under: Animations, Software, Sun — Dave @ 8:29 am

Our testers have produced a fantastic collection of images and animations which are presented below. On most of the videos, you can right-click and turn on looping which makes it easier to observe the fine detail. (more…)

September 17, 2011

Mike’s Solar Slide Show 2011-09-15

Filed under: Software, Sun — Dave @ 10:05 am

Here is tester Mike’s DSSR slideshow from a cloudy session. No animations but some very nice stills from his CPC800.


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