Hello, I’m Greg Parker the CEO of Parker Technology, my Consultancy company, having taken early retirement from the University of Southampton in September 2010. I have 15 years industrial experience, including 3 years setting up my own University spin out company Mesophotonics Ltd., and 23 years teaching and carrying out photonics research at the University of Southampton.
I have published over 120 refereed journal articles, more than a dozen Patents, and a textbook on Introductory Semiconductor Device Physics. An Astronomy “How to” book was published by Springer in November 2007, and a coffee-table book of deep-sky images called “Star Vistas” was published by Springer in February/March 2009.
I can clearly remember the night of Thursday 2nd May 2002 as if it were yesterday. It was the first night that I properly aligned my brand new 11″ Celestron GPS scope (purchased from David Hinds, U.K.) so that I could automatically go to all the objects I’d read about for many years – but never seen before. I wrote about the experience in a “Lateral Thoughts” article in the September 2002 issue of Physics World (IOP Publications) titled, somewhat sadly, “The most amazing two and a half hours of my life (so far)”.
Since that time even more amazing things have happened – I got a CCD camera and started deep-sky imaging. Never in my wildest dreams as an 12 year old fascinated by astronomy did I guess that I would be able to take deep-sky images from my own back garden in my lifetime!”
On clear Moonless evenings you’ll find me in the New Forest Observatory imaging deep-sky objects.
If you have want to contact me about imaging Deep-Sky objects or anything related to the New Forest Observatory please email me at email@example.com
Life was fairly uneventful for me until I hit age 12 and my parents decided they wanted to take a look at New Zealand. I’d always been interested in astronomy (I think I got my first refractor for Christmas aged around eight) – but the trip to New Zealand really got the astronomy moving. Living in Takapuna on the East coast of the North Island I regularly spent the whole evening fishing from the lava rocks that had been thrown up by the volcano Rangitoto some three miles out in the bay [no, I didn't attend much school]. Looking up into that completely dark night sky was a pretty awe inspiring experience, plus there was the added fun of all the stars I’d never seen before from the U.K.
Unfortunately the dream came to an end and my parents and I returned to the U.K. All, however, was not finished astronomy-wise. We ended up living in a village called Walkhampton within Dartmoor National Park. When the skies were clear, they were also completely free of light pollution – this was observer’s heaven! The view through an ordinary pair of 10 x 50 binoculars was unbelievable, and one night, camping out in the middle of Dartmoor one summer evening, I took a peek out of the tent at about 2.00 a.m. I have never seen such a perfect night sky (even in New Zealand!) before, or since.
Fun comes to an end at some point though, and you have to go out to work. I took an H.N.C. ((Higher National Certificate)) whilst working for the Culham Labs in Oxford, and received Distinctions in Applied Physics and Pure mathematics from Oxford Polytechnic [now Oxford Brookes University]. This set me up to take a degree in Physics, Maths and Astronomy at Sussex University [1975 - 1978] where I managed to scrape a First. This also put me off anything to do with Astronomy for about 5 years!”
I then went to work at Philips Research Labs, Redhill, Surrey and at the same time took a PhD at Surrey University which was awarded in 1982. I spent a total of 15 years in Industry [including 3 years in my University spin out company Mesophotonics Ltd.] and finally spent 23 years at the University of Southampton where I was a Professor of Photonics. Somehow I also found the time to create and sell two other companies.
Purchasing the Celestron Nexstar
At the beginning of 2002 I found myself in a situation I had never encountered before, I had some spare cash to buy myself a good quality telescope and plumped for the Celestron Nexstar 11″ GPS with Hyperstar attachment. I used this for visual work only [the Hyperstar remained untouched in its box] for two years, carrying the kit in and out of doors on any clear night. In November 2004 I bought my first CCD, a Starlight Xpress SXV-H9C which was a perfect match for the Hyperstar lens. All my initial images were taken with the fantastic Hyperstar working at an amazing f#1.85.
During 2005 I was invited to join the Our Dark Skies forum [U.S.A.] by Bud Guinn who I had met on the Starlight Xpress Yahoo forum. On the ODS forum I came across an image processing expert called Noel Carboni – and the rest as they say is history
The Takahashi Sky 90
From September 2006 until June 2008 I imaged with a Takahashi Sky 90 refractor at f#4.6 and a large format Starlight Xpress SXVF-M25C one-shot colour camera. The little Tak gave an amazing completely flat field across a massive 3.33 x 2.22 degrees field of view (FOV). Also, star shapes were good across the whole FOV [ something that wasn't possible with the ultra-fast Hyperstar] – the only downside of the Tak was that it was 6 times slower than the Hyperstar system. However, the field of view with the Sky 90 and SXVF-M25C was actually 10 times greater than the Hyperstar/H9C combination – so overall, as far as total exposure time went, I was actually winning.
The Future and the mini-WASP array
My next major project is the New Forest Observatory mini-WASP array. But don’t hold your breath over this one – it’s going to take some time (and a lot of cash). The mini-WASP will use multiple refractors and CCD cameras [just like the super-WASP arrays] and it will need to go on a professional mount – almost certainly the Paramount ME [and have you seen the price of those!!]. Well that’s the dream anyway. Keep looking at this site to see the progress [or not] on the mini-WASP array. At the present time I have the telescope framework built, 2 Sky90s with reducer correctors, and a Megrez 80 guide scope. I have posted a picture of the framework on the NFO site.
The Hyperstar returns to the New Forest Observatory
I did all my Sky 90/SXVF-M25C imaging while on sabbatical, and towards the end of this break I was wondering how I was going to continue imaging as the Sky 90 required very long total exposure times for good results. I got lucky I guess. On returning full-time to the University I was soon sent out to Arizona to check out some semiconductor processing gear – Arizona of course means Starizona – and while I was out there Dean shipped a new version 3 Hyperstar and also the electronic microfocusser for the FeatherTouch focuser, to my hotel. Of course as soon as I landed back in the U.K. and returned home I removed the SKy 90 and replaced it with a very lightweight Celestron guide scope, also the secondary mirror was taken off the C11 and on went the new Hyperstar III. Since June 2008 I have been imaging with the Hyperstar III on the C11 and it really is a dream combination. The new Hyperstar III not only has collimation adjustment and camera rotation built in, it can also now easily handle the bigger SXVF-M25C chip. So in the short time I was away from Hyperstar imaging, Dean at Starizona had addressed all the problems that led me to stopping imaging with the original Hyperstar. Can the Hyperstar be improved even further? Yes it can. It cannot accommodate a full 35mm chip as the optics makes this physically impossible. But – it would be very nice to be able to place filters into the Hyperstar through a side entry slot rather than having to break into the imaging train each time. I believe Dean has a design solution to this one already worked out.
So -rather than the mini-WASP array being the next development at the NFO, it was in fact a return to Hyperstar imaging that was the next move. I have not given up on the mini-WASP array however and it is still being assembled, slowly. There is also something going on behind the scenes regarding the mini-WASP, and I’ll be able to let you know more about this in the coming months. That “something behind the scenes” was an application to the Arts Council for a grant to build the mini-WASP array. I didn’t get it
2010 and the mini-WASP project continues
Well I bought the Paramount ME towards the end of 2009, and I have the custom-built all Aluminium pier due to be delivered in the next few days. A custom designed and built adapter to fit an M26C camera to an f#4.5 reducer/corrector together with an integral filter holder has already been fitted to the Sky 90 refractors. So next things on the list are the concrete base for the pillar, the wooden decking surround and the fibreglass dome – these items are due to be crossed off the list by the end of May 2010. The aim is to get the basic mini-WASP array seeing first light by August 2010 ready for serious imaging during winter 2010.
2011 and the mini-WASP continuums (to quote Douglas Adams)
As I am now full-time running my Consultancy I actually have the time to think about getting the mini-WASP up and running. I made the mistake of going to AstroFest on 4th February 2011 and saw that the new 2.2 metre dome was ideal for the new array. So the beginning of 2011 will see another concrete block and decking installed in the garden ready to take the 2.2 metre dome. Then it will be a matter of installing the Paramount and the 4-telescope framework that is the basis of the mini-WASP.