Swansea Astronomical Society Blog

Thursday, December 1, 2016

 

Deep Sky Sketches

Using a 130mm refractor and a Watec video camera as an electronic eyepiece, sketches were made of deep sky objects. Nov 29




Jim Startup
 

Sunspots from Nov 30 to Dec 01

A static tripod mounted Panasonic Lumix DMC-FZ72 bridge camera at 60x optical zoom, fitted with a Baader solar filter, was set to ISO 100 and 1/1000s exposure. Images of the Sun, were captured in bursts of three. on November 30th and December 1st. Images were precisely cropped in Nicola Mackin's AstroCrop for Linux, under Mint Linux, the cropped and registered images were stacked and wavelet processed in Registax 5.1 running in Wine and the final image post processed in the Gimp 2.9.An animation of the movement and changes in the sunspots over a 1 day period, was made in Animation shop 3 running in Wine. Click on the image to get a closer view:


Steve Wainwright
 

M82

Celestron 9.25 SCT AVX, .5 Revelation Focal Reducer giving a focal ratio of around 5.0 , 30 images at 90 secs exposures captured with the Orion G3 DeepSpace Colour CCD camera, 7 of them processed in Orion Studio Software and then in Adobe Elements 11.






Celestron 9.25 SCT AVX, Celestron .63 Focal Reducer giving a focal ratio of around 6.3, 30 images at 90 secs exposures captured with the Orion G3 DeepSpace Colour CCD camera, 21  processed in Orion Studio Software and then in Adobe Elements 11.



Colin Miles
 

The Orion nebula

On November 28th a DMK21AU04 camera was placed at the prime focus of an f/5.5, 80mm refractor, mounted on an iOptron Cube Pro, AZ, GOTO mount. Nicola Mackin's AstroDMx Capture for Linux was used to capture the images under Linux Mint. 100 x 2s exposures were captured as TIFFs. The best 78 images were stacked in Registax 5.1 running in Wine and the resulting image was saved as a 16 bit FITs file. The FITs image was processed in the ESA, ESO, NASA Fits Liberator program running in Wine and the result saved as a TIFF file which was post processed in the Gimp 2.9.

Steve Wainwright

Wednesday, November 30, 2016

 

Widefield images

iOptron Skytracker and DSLR camera with a 16-80 mm Carl Zeiss zoom lens. I pointed the camera at the Deneb area of the sky and took a widefield at 16mm followed by a zoomed in shot without moving the camera too much at 80mm. Click on an image to get a larger view.

16mm shot 60x1min at iso6400.

80mm shot 60x30sec at iso6400.

North American nebula

Stacked in Deep Sky Stacker with darks subtracted but I'd captured them as jpegs not raw.

Anne Startup
 

The Sun in Ca K-line light and H-alpha light

Nicola's AstroDMx Capture for Linux was used to capture all of the AVIs under Linux Mint. The scopes were mounted on an iOptron Cube Pro, AZ, GOTO mount.
A DMK21AU04 camera was placed at the prime focus of a Coronado CaK PST. 4 x 500 frame AVIs were captured of overlapping quadrants of the Sun. The AVIs were stacked in Registax 5.1 running in Wine and the 4 resulting images were combined into a single image mosaic in Autostitch, running in Wine. The final image was post processed and colourised in the Gimp 2.9.

Click on the image to get a closer view:
Ca K-line 

The active regions 2614 and 2612 imaged with the x2 Barlow lens on the nosepiece of the camera.


A DMK21AU04 camera was placed at the prime focus of a Coronado Solarmax II, 60, BF15, H-alpha scope. 4 x 1000 frame AVIs were captured of overlapping quadrants of the Sun. The AVIs were stacked in Registax 5.1 running in Wine and the 4 resulting images were combined into a single image mosaic in Autostitch, running in Wine. The final image was post processed and colourised in the Gimp 2.9.
Click on the image to get a closer view:

H-alpha

The lens from a x2 Barlow was attached to the nosepiece of the DMX and 4 x 1000 frame overlapping AVIs were captured to include the major active regions. The AVIs were stacked in Registax 5.1 and the 4 resulting images were stitched into a single image with Autostitch, colourised and post processed in the Gimp 2.9.

Click on the image to get a closer view


The AR2614 and 2613 region in CaK-line light gradually superimposed on the same region in H=alpha light


Steve Wainwright
 

The Cigar galaxy

Celestron 9.25 SCT AVX, .5 Revelation Focal Reducer giving a focal ratio of around 5.7 , 30 images, 60 secs exposures captured with the Orion G3 DeepSpace Colour CCD camera, processed in Orion Studio Software. Click on the image to  get a closer view:


Colin Miles

Tuesday, November 29, 2016

 

M82

Celestron 9.25 SCT AVX, .63 Celestron Focal Reducer, 30 images, 60 secs exposures captured with the Orion G3 DeepSpace Colour CCD camera, best 20 processed in Orion Studio Software. Click on an image to  get a closer view:






Celestron 9.25 SCT AVX, .63 Celestron Focal Reducer + .5 Revelation Focal Reducer giving an over f/r of 3.6 , 20 images, 20 secs exposures captured with the Orion G3 DeepSpace Colour CCD camera,  processed in Orion Studio Software.



Colin Miles
 

The Sun in H-alpha light

Nicola's AstroDMx Capture for Linux was used under Linux Mint to capture AVIs of the Sun. A DMK21AU04 camera was placed at the prime focus of a Solarmax II, 60, BF15, H-alpha scope, mounted on an iOptron Cube Pro, AZ, GOTO mount. 1000 frame AVIs of 4 overlapping quadrants of the Sun were captured, exposed for the disk. There was one small prominence present, so the Quadrant containing the prominence was imaged with a 1000 frame AVI, exposed for the prominence. The AVIs were stacked and wavelet processed in Registax 5.1 running in Wine. The 4 resulting disk quadrants were stitched in Autostitch running in Wine. The final image was post processed, colourised and the prominence layered in with the Gimp 2.9. Click on the image to get a closer view:


Steve Wainwright

Monday, November 28, 2016

 

Capturing the Sun in H-alpha light under Linux Mint

Nicola has now got the AVI capture working in AstroDMx Capture for Linux and has also installed it on a Linux Mint machine (It is being developed under Fedora Linux).
A DMK21AU04 camera was placed at the prime focus of a Solarmax II, 60, BF15, H-alpha scope. 4 x 1000 frame AVIs were captured of overlapping quadrants of the Sun with the exposure set for the solar disk. Another 4 x 1000 frame AVIs were captured of 4 overlapping quadrants with the camera exposure set to reveal the prominences. The AVIs were stacked in Registax 5.1 running in Wine and the 4 resulting images from each exposure were combined using Autostitch running in Wine. The disk image and the prominences image were post processed and merged in the Gimp 2.9 to produce a single image showing the disk and the prominences. Click on an image to get a closer view:






Image inverted and hue corrected, to show the solar details in a different way
Steve Wainwright

Sunday, November 27, 2016

 

Deep Sky Sketches

Using a 130mm refractor and a Watec video camera as an electronic eyepiece, sketches were made of deep sky objects. Nov 27/28












Jim Startup

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