I hold an Open Science degree from the Open University. My main areas of interest include Maths, Physics, Geology, Oceanography, Astronomy, Cosmology and Environmental Politics.
I am starting to make the transition from “sightseer” to being a more dedicated observer and enjoy observing binary (or more) star systems and variable stars. I have developed an observation log sheet; please feel free to download a copy for your own use and / or modification here (needs MS Excel)
1999 Solar Eclipse
In 1999 I went to Amiens to view the total solar eclipse. The linked pdf has the results of my light-level observations during the eclipse – these results were published in both the British Astronomical Association’s official CD-Rom on the event and Eclipse, Vol 28 No. 3 (The journal of the South East Kent Astronomical Society)
If you are interested in taking your own pictures of a lunar eclipse, the exposure details given on this table might be of use – I used them to photograph the eclipse of 9/1/2001:
I have been observing with a 6″ Newtonian reflector(Europa 150 from Orion Optics) since 1998 ; it looks something like this one.
The tube has a focal length of 750mm, making it reasonably “fast” at f5. The telescope has a motor drive on the RA axis and I have added a 10×50 right-angled finder scope. My only criticism of this telescope is that it was supplied with the main mirror lacking a centre spot, which made collimation difficult. However, adding a centre-spot was simple and collimation is now an easy task.
I use 25mm, 9mm and 2.5mm eyepieces in combination with a 2x Barlow, which yield the following magnifications and fields of view :
25mm Plossl – x30 magnification, 84 arc mins field of view
25mm Plossl + 2x Barlow – x60 magnification, 39 arc mins f.o.v.
9mm Kellner – x 83 magnification, 30 arc mins f.o.v.
9mm Kellner + 2x Barlow – x167 magnification, 13.5 arc mins f.o.v.
2.5mm Lanthanum – x300 magnification, 8.0 arc mins f.o.v.
Whenever possible I try to supplement my observations with measurements of how dark the sky was. I achieve this by using a “Pitch Black Meter” as described by Gote Flodqvist in her February 2001 Sky & Telescope article. The parts for this instrument were easy to find and it was simple to construct. The electronic components and enclosing box cost GBP38.00 from Maplin Electronics, and the green objective filter was an extra GBP6.00 from a camera shop. Anyone wanting to build a PBM can get hold of the design from a back-issue available from the S&T website here.
Articles & Essays
The following articles & essays can be accessed for free from this folder on DropBox:
SEKAS article 1: Getting to know you, getting to know all about you.
SEKAS article 2: Studying astronomy and related sciences
SEKAS article 3: Calibrating your eyepieces.
SEKAS article 4: Determining the resolution of my telescope
SEKAS article 5: All change on the cosmological front?
SEKAS article 6: Book review – Mars, Uncovering the secrets of the red planet
SEKAS article 7: Book review – Our Cosmic Habitat
SEKAS article 8: Lost document
SEKAS article 9: Book review – Beyond Pluto
SEKAS article 10: Measuring Mars
SEKAS article 11: Taurus
SEKAS article 12: Observing Evolution
SEKAS article 13: Book review – Black Holes
SEKAS article 14: Book review – Jupiter
Essay: ALICE: Where does the Solar System end and inter-stellar space begin?”
[Originally posted 11/8/18 on my author’s blog] : One of the interesting questions in Astronomy is where does the Solar System end and inter-stellar space begin? There’s a nice result being shared by NASA from the ALICE instrument on the ‘New Horizons’ spacecraft that is helping with that question and confirming observations from the Voyager spacecraft.
Pegwell Bay – Ramsgate:
I am slowly working on a guide to Pegwell Bay (Ramsgate, Kent). As well as being my local “beach”, Pegwell Bay is the ‘type location’ for the sub-eocene unconformity; a break in the geological record between the underlying chalk (dating from the Cretaceous Period, about 100 million years ago) and the overlying Thanet Beds (dating from about 70 million years ago). The unconformity itself is marked by a bed of unworn, green-coated flints (called the Bullhead Bed).
The first step to producing this guide was achieved in 2005 when my paper on the Geology of Pegwell bay was published in the Open University Geological Society Journal (Spring edition 2005, Volume 26(1)) – a copy of the paper can be found here: The Geology of Pegwell Bay.
The first step to producing this guide was achieved in 2005 when my paper on the Geology of Pegwell bay was published in the Open University Geological Society Journal (Spring edition 2005, Volume 26(1)) – a copy of the paper can opened from here:
When completed, the guide will discuss the origin and evolution of the structures present, as well as the wider historical and natural scientific background of the site.
a small write up of my visit to the fossiliferous beach at Portishead: