Swansea Astronomical Society Blog

Saturday, April 17, 2010

 

Crescent Moon

In the bright evening sky I used a DMK21 with a red filter to image the Moon through a 70mm F/10 refractor. The Moon was imaged in three sections and 2000 frames wera captured and stacked for each section. The three images of the crescent Moon were then merged using Jon Grove's iMerge software:

Click on the image to see a larger view.
Even though the sky was bright, the red filter darkened the sky and also eliminated the effects of atmospheric dispersion.

I then changed the scope for a 6" SCT with a 6.3 focal reducer and repeated the exercise, again using a red filter to darken the evening sky and remove atmospheric dispersion. The final mosaic produced by iMerge was then further processed in The Gimp. Click on the image below to see the full-size image.

You will have to scroll the image up and down, left and right to see the whole thing.

Steve Wainwright
 

Saturn last night

I took a few AVIs of Saturn around 11pm last night.
 
It was taken through my 11" Celestron, DBK 21 camera and a 2.5x barlow.
 
Keith Davies

 

Saturn and Sombrero Galaxy

Wayne Jones and I teamed up at Fairwood last night to do some imaging with his Mintron accumulating camera and my Celestron 8SE scope. We got the above results after stacking with Registax and de-noising using GIMP selective Gaussain blur. Saturn was taken with a 2x barlow. Quite encouraging results for beginning imagers like ourselves!

 

Venus and the crescent Moon

Last night at dusk provided nice views of the crescent Moon with Venus below it.
I mounted my Fujifilm F-450 on a tripod. The ISO value was set to 80. A timed shutter release allowed the picture to be taken with no camera shake and the camera used an exposure of 1/6s:


Click on the image to see a larger view.

Steve Wainwright

Friday, April 16, 2010

 

Looping prominence and an afocal image

A DMK21 camera was used with a 3x Meade Barlow lens and a H-alpha PST solar scope to capture AVIs exposed for the prominence and the disk separately.
The AVIs were stacked in Registax and combined into a single image using Andrew Sprott's Solar Layers software:


An afocal image was taken through a 16.8mm orthoscopic eyepiece with a hend held Fujifilm F-450 compact camera. Both images were colourised to represent the colour of the H-alpha light being used:

This image captured solar disk structure as well as the prominences.

Steve Wainwright




Thursday, April 15, 2010

 

Solar Prominences back to normal

Using a DMK21 camera fitted with a short nosepiece and the lens assembly from a Cemax 2x Barlow, a PST H-alpha solar scope was used to obtain these images. They have been colourised to represent the wavelength of light being used:



There was little activity on the solar disk with just a few small prominences on the limb.

A hand-held afocal image was taken with a Fujifilm F-450 compact camera in B/W mode. The image has been colourised after levels ajustments and unsharp masking in The Gimp to represent the red of H-alpha:

Filaments and surface super granulation can be seen in this image proving that using simple equipment can be worthwhile.

Steve Wainwright


Tuesday, April 13, 2010

 

Detached prominence

After speaking to Steve this morning I was able to image what looks like a detached prominence. Both shots have been sent to Spaceweather.
 
They were taken through my PST, DMK31 (Mono) camera, a 2x then 3x barlow. Seeing conditions were quite poor with thin hazy cloud.
Keith Davies

 

Enormous, ephemeral eruptive prominence

Between 9-35 and 9-44am BST I imaged an enormous eruptive prominence that was about a quarter of the diameter of the Sun in size.
Within an hour it had largely dissipated.
I used a DMK21 camera fitted with a short nosepiece and the lens assembly from a Coronado Cemax x2 Barlow and a H-alpha PST solar scope:

Eruptive prominence


Here is the same image colourised to represent the wavelength of light being observed:

Separate exposures to show the prominence and the solar disk were combined using Andrew Sprott's Solar Layers software.

A simple compact Fujifilm F-450 compact camera in B/W mode was able to capture the prominence with an afocal shot through a 15mm eyepiece:

A virtual occultation disk has been placed over the Sun in the right hand image to facilitate viewing the prominence which is fainter than the disk of the Sun.

Steve Wainwright

Monday, April 12, 2010

 

Fine Solar Prominence and Saturn

I used a x2 Barlow with the DMK21 camera and a H-alpha PST solar scope to capture this image of a hedgerow prominence.

The image comprised 3000 frames exposed for the prominence stacked in Registax and 2000 frames exposed to show the disk, stacked in registax and combined to form a single image with Andrew Sprott's Solar Layers software.

This is the same prominence but the camera used was a ToUCam Pro webcam:

In both images filaments can be seen snaking towards the limb where they become prominences.

In the evening I used the DMK21 camera with a 2.5x Barlow and a Skymax127 Maksutov to capture 10,000 frames that were then stacked in Registax to produce this image:


Steve Wainwright


Keith Davies captured the same prominences at two different image scales with his H-alpha PST and his DMK31



Archives

December 27, 2009   January 3, 2010   January 17, 2010   January 24, 2010   January 31, 2010   February 7, 2010   February 14, 2010   February 21, 2010   February 28, 2010   March 7, 2010   March 14, 2010   March 21, 2010   March 28, 2010   April 4, 2010   April 11, 2010   April 18, 2010   April 25, 2010   May 2, 2010   May 9, 2010   May 16, 2010   May 23, 2010   May 30, 2010   June 6, 2010   June 13, 2010   June 20, 2010   June 27, 2010   July 4, 2010   July 11, 2010   July 18, 2010   July 25, 2010   August 1, 2010   August 8, 2010   August 15, 2010   August 22, 2010   August 29, 2010   September 12, 2010   September 19, 2010   September 26, 2010   October 3, 2010   October 10, 2010   October 17, 2010   October 24, 2010   October 31, 2010   November 7, 2010   November 14, 2010   November 21, 2010   November 28, 2010   December 5, 2010   December 12, 2010   December 19, 2010   December 26, 2010   January 2, 2011   January 9, 2011   January 16, 2011   January 23, 2011   January 30, 2011   February 6, 2011   February 13, 2011   February 20, 2011   February 27, 2011   March 6, 2011   March 13, 2011   March 20, 2011   March 27, 2011   April 3, 2011   April 10, 2011   April 17, 2011   April 24, 2011   May 8, 2011   May 15, 2011   May 22, 2011   May 29, 2011   June 5, 2011   June 12, 2011   June 19, 2011   June 26, 2011   July 3, 2011   July 10, 2011   July 17, 2011   July 24, 2011   July 31, 2011   August 7, 2011   August 14, 2011   August 21, 2011   August 28, 2011   September 11, 2011   September 25, 2011   October 2, 2011   October 9, 2011   October 16, 2011   October 23, 2011   October 30, 2011   November 6, 2011   November 13, 2011   November 20, 2011   November 27, 2011   December 4, 2011   December 11, 2011   December 18, 2011   December 25, 2011   January 1, 2012   January 8, 2012   January 15, 2012   January 22, 2012   January 29, 2012   February 5, 2012   February 12, 2012   February 19, 2012   February 26, 2012   March 4, 2012   March 11, 2012   March 18, 2012   March 25, 2012   April 1, 2012   April 8, 2012   April 15, 2012   April 22, 2012   May 6, 2012   May 13, 2012   May 20, 2012   May 27, 2012   June 17, 2012   July 8, 2012   July 15, 2012   July 22, 2012   August 5, 2012   August 12, 2012   August 19, 2012   August 26, 2012   September 2, 2012   September 9, 2012   September 16, 2012   September 23, 2012   September 30, 2012   October 7, 2012   October 14, 2012   October 21, 2012   October 28, 2012   November 4, 2012   November 11, 2012   November 18, 2012   November 25, 2012   December 2, 2012   December 9, 2012   December 16, 2012   December 23, 2012   December 30, 2012   January 6, 2013   January 13, 2013   January 20, 2013   January 27, 2013   February 3, 2013   February 10, 2013   February 17, 2013   February 24, 2013   March 3, 2013   March 10, 2013   March 17, 2013   March 24, 2013   March 31, 2013   April 7, 2013   April 14, 2013   April 21, 2013   April 28, 2013   May 5, 2013   May 12, 2013   May 19, 2013   May 26, 2013   June 2, 2013   June 9, 2013   June 16, 2013   June 23, 2013   June 30, 2013   July 7, 2013   July 14, 2013   July 21, 2013   July 28, 2013   August 11, 2013   August 18, 2013   August 25, 2013   September 1, 2013   September 8, 2013   September 15, 2013   September 22, 2013   September 29, 2013   October 6, 2013   October 13, 2013   October 27, 2013   November 3, 2013   November 10, 2013   November 17, 2013   November 24, 2013   December 1, 2013   December 8, 2013   December 15, 2013   December 22, 2013   December 29, 2013   January 5, 2014   January 12, 2014   January 19, 2014   January 26, 2014   February 2, 2014   February 9, 2014   February 16, 2014   February 23, 2014   March 2, 2014   March 9, 2014   March 16, 2014   March 23, 2014   March 30, 2014   April 6, 2014   April 13, 2014   April 20, 2014   April 27, 2014   May 4, 2014   May 11, 2014   May 25, 2014   June 1, 2014   June 8, 2014   June 15, 2014   June 22, 2014   June 29, 2014   July 6, 2014   July 20, 2014   July 27, 2014   August 3, 2014   August 10, 2014   August 17, 2014   August 24, 2014   August 31, 2014   September 7, 2014   September 14, 2014   September 21, 2014   September 28, 2014   October 5, 2014   October 12, 2014   October 19, 2014   October 26, 2014   November 2, 2014   November 9, 2014   November 16, 2014   November 23, 2014   November 30, 2014   December 7, 2014   December 14, 2014   December 21, 2014   December 28, 2014   January 4, 2015   January 11, 2015   January 18, 2015   January 25, 2015   February 1, 2015   February 8, 2015   February 15, 2015   February 22, 2015   March 1, 2015   March 8, 2015   March 15, 2015   March 22, 2015   March 29, 2015   April 5, 2015   April 12, 2015   April 19, 2015   April 26, 2015   May 3, 2015   May 10, 2015   May 17, 2015   May 24, 2015   May 31, 2015   June 7, 2015   June 14, 2015   June 21, 2015   June 28, 2015   July 5, 2015   July 12, 2015   July 19, 2015   July 26, 2015   August 2, 2015   August 9, 2015   August 16, 2015   August 23, 2015   August 30, 2015   September 6, 2015   September 13, 2015   September 20, 2015   September 27, 2015   October 4, 2015   October 11, 2015   October 18, 2015   October 25, 2015   November 1, 2015   November 8, 2015   November 22, 2015   November 29, 2015   December 20, 2015   December 27, 2015   January 3, 2016   January 10, 2016   January 17, 2016   January 24, 2016   January 31, 2016   February 7, 2016   February 14, 2016   February 21, 2016   February 28, 2016   March 6, 2016   March 13, 2016   March 20, 2016   March 27, 2016   April 3, 2016   April 10, 2016   April 17, 2016   April 24, 2016   May 1, 2016   May 8, 2016   May 15, 2016   May 22, 2016   May 29, 2016   June 5, 2016   July 10, 2016   July 17, 2016   July 31, 2016   August 7, 2016   August 14, 2016   August 21, 2016   August 28, 2016   September 4, 2016   September 11, 2016   October 2, 2016   October 9, 2016   October 16, 2016   October 30, 2016   November 6, 2016   November 13, 2016   November 20, 2016   November 27, 2016   December 4, 2016   December 11, 2016   December 18, 2016   December 25, 2016   January 1, 2017   January 8, 2017   January 15, 2017   January 22, 2017   January 29, 2017   February 5, 2017   February 12, 2017   February 19, 2017   February 26, 2017   March 5, 2017   March 12, 2017   March 19, 2017   March 26, 2017   April 2, 2017   April 9, 2017   April 16, 2017   April 23, 2017   April 30, 2017   May 7, 2017   May 14, 2017   May 21, 2017   May 28, 2017   June 4, 2017   June 11, 2017   June 18, 2017   July 2, 2017   July 9, 2017   July 16, 2017   July 23, 2017   August 6, 2017   August 13, 2017   August 20, 2017   August 27, 2017   September 10, 2017   September 17, 2017   September 24, 2017   October 1, 2017   October 8, 2017   October 15, 2017   October 22, 2017   October 29, 2017   November 5, 2017   November 12, 2017   November 19, 2017   November 26, 2017   December 3, 2017   December 10, 2017   December 24, 2017   December 31, 2017   January 7, 2018   January 21, 2018   January 28, 2018   February 4, 2018   February 11, 2018   February 18, 2018   February 25, 2018   March 4, 2018   March 18, 2018   March 25, 2018   April 8, 2018   April 15, 2018   April 22, 2018   April 29, 2018   May 6, 2018   May 13, 2018   May 20, 2018   May 27, 2018   June 3, 2018   June 10, 2018   June 17, 2018   June 24, 2018   July 1, 2018   July 8, 2018   July 15, 2018   July 22, 2018   August 5, 2018   August 12, 2018   August 19, 2018   August 26, 2018   September 2, 2018   September 9, 2018   September 23, 2018   September 30, 2018   October 7, 2018   October 14, 2018   October 21, 2018   October 28, 2018   November 4, 2018   November 11, 2018   November 18, 2018   December 2, 2018   December 9, 2018   December 16, 2018   December 30, 2018   January 6, 2019   January 13, 2019   January 20, 2019   January 27, 2019   February 3, 2019   February 10, 2019   February 17, 2019   February 24, 2019   March 10, 2019   March 17, 2019   March 24, 2019   April 7, 2019   April 14, 2019   April 21, 2019   April 28, 2019   May 5, 2019   May 12, 2019   June 2, 2019   June 9, 2019   June 16, 2019   June 23, 2019   July 7, 2019   July 14, 2019   July 21, 2019   August 11, 2019   August 25, 2019   September 8, 2019   September 15, 2019   September 22, 2019   October 6, 2019   October 13, 2019   October 20, 2019   October 27, 2019   November 3, 2019   November 10, 2019   November 17, 2019   November 24, 2019   December 1, 2019   December 15, 2019   December 22, 2019   December 29, 2019   January 5, 2020   January 12, 2020   January 19, 2020   February 2, 2020   February 9, 2020   February 16, 2020   February 23, 2020   March 1, 2020   March 8, 2020   March 15, 2020   March 22, 2020   March 29, 2020   April 5, 2020   April 12, 2020   April 19, 2020   April 26, 2020   May 3, 2020   May 10, 2020   May 17, 2020   May 24, 2020   May 31, 2020   June 7, 2020   June 14, 2020   June 21, 2020   July 5, 2020   July 12, 2020   July 19, 2020   July 26, 2020   August 9, 2020   August 30, 2020   September 6, 2020   September 13, 2020   September 20, 2020   September 27, 2020   October 4, 2020   October 11, 2020   October 18, 2020   November 1, 2020   November 8, 2020   November 15, 2020   November 22, 2020   November 29, 2020   December 6, 2020   December 13, 2020   December 20, 2020   December 27, 2020   January 3, 2021   January 10, 2021   January 17, 2021   January 24, 2021   January 31, 2021   February 7, 2021   February 14, 2021   February 21, 2021   February 28, 2021   March 7, 2021   March 14, 2021   March 21, 2021   March 28, 2021   April 4, 2021   April 11, 2021   April 18, 2021   April 25, 2021   May 2, 2021   May 16, 2021   May 23, 2021   May 30, 2021   June 6, 2021   June 13, 2021   June 27, 2021   July 4, 2021   July 11, 2021   July 18, 2021   July 25, 2021   August 1, 2021   August 8, 2021   August 15, 2021   August 22, 2021   August 29, 2021   September 5, 2021   September 19, 2021   October 3, 2021   October 10, 2021   October 17, 2021   October 24, 2021   October 31, 2021   November 7, 2021   November 14, 2021   November 21, 2021   November 28, 2021   December 5, 2021   December 12, 2021   January 2, 2022   January 9, 2022   January 16, 2022   January 23, 2022   January 30, 2022   February 6, 2022   February 13, 2022   February 20, 2022   February 27, 2022   March 6, 2022   March 13, 2022   March 20, 2022   March 27, 2022   April 3, 2022   April 10, 2022   April 17, 2022   April 24, 2022   May 1, 2022   May 8, 2022   May 15, 2022   May 22, 2022   May 29, 2022   June 5, 2022   June 12, 2022   June 19, 2022   June 26, 2022   July 3, 2022   July 10, 2022   July 17, 2022   July 24, 2022   July 31, 2022   August 7, 2022   August 14, 2022   August 21, 2022   August 28, 2022   September 4, 2022   September 11, 2022   September 18, 2022   September 25, 2022   October 2, 2022   October 9, 2022   October 16, 2022   October 23, 2022   October 30, 2022   November 6, 2022   November 13, 2022   November 20, 2022   November 27, 2022   December 4, 2022   December 11, 2022   December 18, 2022   December 25, 2022   January 1, 2023   January 8, 2023   January 15, 2023   January 22, 2023   January 29, 2023   February 5, 2023   February 12, 2023   February 19, 2023   February 26, 2023   March 5, 2023   March 12, 2023   March 19, 2023   March 26, 2023   April 2, 2023   April 9, 2023   April 16, 2023   April 23, 2023   April 30, 2023   May 7, 2023   May 14, 2023   May 21, 2023   May 28, 2023   June 4, 2023   June 11, 2023   June 18, 2023   June 25, 2023   July 2, 2023   July 9, 2023   July 16, 2023   July 23, 2023   July 30, 2023   August 6, 2023   August 13, 2023   August 20, 2023   August 27, 2023   September 3, 2023   September 10, 2023   September 17, 2023   September 24, 2023   October 1, 2023   October 8, 2023   October 15, 2023   October 22, 2023   October 29, 2023   November 5, 2023   November 12, 2023   November 19, 2023   November 26, 2023   December 3, 2023   December 10, 2023   December 17, 2023   December 24, 2023   December 31, 2023   January 7, 2024   January 14, 2024   January 21, 2024   January 28, 2024   February 4, 2024   February 11, 2024   February 18, 2024   February 25, 2024   March 3, 2024   March 10, 2024   March 17, 2024   March 24, 2024   March 31, 2024   April 7, 2024   April 14, 2024   April 21, 2024   April 28, 2024   May 5, 2024   May 12, 2024   May 19, 2024   May 26, 2024   June 2, 2024   June 9, 2024   June 16, 2024   June 23, 2024   June 30, 2024   July 7, 2024   July 14, 2024   July 21, 2024   July 28, 2024   August 4, 2024   August 11, 2024   August 18, 2024   August 25, 2024   September 1, 2024   September 8, 2024   September 15, 2024   September 22, 2024   September 29, 2024   October 6, 2024   October 13, 2024   October 20, 2024   October 27, 2024  

This page is powered by Blogger. Isn't yours?

Subscribe to Posts [Atom]