Swansea Astronomical Society Blog

Saturday, March 16, 2013

 

Comet Panstarrs C/2011 L4 getting slightly higher in the sky and a 25% waxing, crescent Moon

Comet Panstarrs was just naked eye tonight when the sky became dark enough. A Pentax K-x DSLR fitted with a 400 mm lens was used to capture 10 images of the comet. These images were stacked on the comet to produce a single image:


Stack of 7 images



Next are single images showing that the comet was close to the horizon:




An animation was made from 14 consecutively captured 2s exposures showing the comet moving with the sky at it was setting:



Steve Wainwright

A tripod mounted Nikon D5100 DSLR camera with a 300 mm lens was used to take a series of 2s images of the Comet:


Ten consecutive images were used to make this animation. Note this is not movement of the comet across the sky, it is movement of the comet with the sky as it rotates and sinks into the west:


The Nikon D5100 was fitted with a 500 mm lens was used to capture this image of the 25% waxing, crescent Moon which is a stack of 12 individual images:


Nicola Mackin


Friday, March 15, 2013

 

Aurora from a trip to Iceland

Images of the Aurora Borealis were captured using 3 cameras:

The first 2 were taken with Canon Ixus 50, a 5mp compact camera, using ISO 400 and a shutter speed of 15s, the maximum possible on this camera. Click on an image to get a larger view:




The next one is with a Canon Ixux 1000HS which is a 10mp camera. The ISO was set tp automatic and exposure 15s on long exposure mode. This picture has considerably less noise - possibly because the camera decided what to use!



The final 3 are using a Konica Minolta Dynax 7d which is 6mp, I think. These shots were taken on ISO 1600 and 30s which does result in considerable noise but gives much more signal.





Anne and Jim Startup

Thursday, March 14, 2013

 

Jupiter and the end of an Io transit

A Philips SPC900 camera was used tith a polar aligned 6" SCT to image Jupiter. The best 95% of 587 frames were stacked to produce the final image:



Colin Miles

Wednesday, March 13, 2013

 

Comet Panstarrs C2011 L4

A Tripod mounted Nikon D5100 DSLR was used to capture this image of the comet in twilight at Rhossili:


Nicola Mackin
 

Comet Panstarrs C2011 L4 and Earthshine

A tripod mounted Pentax Kx DSLR fitted with a 300mm lens was used to capture these images of Comet Panstarrs C2011 L4:



The 4% waxing, crescent Moon was imaged to show the Earthshine:


Steve Wainwright

Tuesday, March 12, 2013

 

A Sun pillar, a 1%, waxing crescent Moon and Comet Panstarrs C 2011 L4

A Pentax Kx DSLR fitted with a 300 mm lens was used to capture this Sun Pillar at sunset:


Sun pillars are produced by light reflecting from falling ice crystals from high level clouds.

The Moon was hard to spot because it was only a 1% waxing crescent and very low in the sky:


The camera was tripod mounted and 1s exposures at ISO 400 were used to capture these images of the comet before it was covered by clouds near the horizon:



Steve Wainwright

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