Swansea Astronomical Society Blog

Friday, November 15, 2013

 

A lecture on John Flamsteed by Dr John Birks

A spellbinding lecture was given to the Swansea Astronomical Society last night, entitled " John Flamsteed - the First Astronomer Royal, 1646-1719", by Dr John Birks, a past Chairman of the SAS. John is the Author of the Book " John Flamsteed - the First Astronomer Royal at Greenwich", published in 1999,



He has also published a number of scholarly articles in the journal 'The Antiquarian Astronomer:

Steve Wainwright
 

Comet Lovejoy on November 13th

A Pentax K-x DSLR was placed at the Newtonian focus of an f/5, 6" Newtonian. The transparency was very poor due to a mist. 17 x 30s exposures were captured at ISO 12800. Five matching dark-frames were captured to correct the exposures. The images were processed in Deep Sky Stacker to produce an image centred on the stars and also in Registax to produce an image centred on the comet:
Centred on the stars, showing a trailed comet:



Centred on the comet, showing trailed stars:


Steve Wainwright

A monochrome Mintron frame integrating video camera was placed at the Newtonian focus of an AZ GOTO 130mm Newtonian telescope and centred on Comet Lovejoy. The screen was photographed with an Android phone, and from the image, a drawing was made of the comet:

 
 
The image was made negative to produce a more realistic view:
 
 
 
Chris Playle´╗┐
´╗┐

Sunday, November 10, 2013

 

Comet Lovejoy C/2013 R1

At 3am, a Pentax K-x DSLR fitted with a 300mm lens was mounted on a Merlin Mount and 30s images of Comet Lovejoy (in Cancer) were captured at ISO 12800. 5 images were stacked in Deep Sky Stacker to produce the final image:





Steve Wainwright

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