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Author Archives: Greg Parker
Frost covered spider webs – Today’s EPOD – Earth Science Picture of the Day
We had a week of sub-zero temperatures at the beginning of 2009 which led to hoar-frost covered spider webs and grass as well as “crystalline copses” – trees glittering from the ice in the early morning winter sunshine. It was … Continue reading
Posted in EPOD
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Southampton Magna Rotary Club – Thursday 24th September
I shall be giving a talk to Southampton Magna Rotary Club on the evening of Thursday 24th September 2009 in Southampton. The title of the talk is “The Magic of Photography” and I will be discussing photography in general and deep-sky … Continue reading
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Greek Astronomy
I spent last week at an electronics Conference in Athens, Greece. Amazingly, from the Acropolis I could see two observatories – one actually down in the town (!) and another far away on a hilltop overlooking Athens. I don’t think … Continue reading
Posted in Articles
2 Comments
Sadr area using the new 45nm bandwidth H-alpha filter
Noel has just processed the H-alpha data from Thursday 10th September 2009. This was the first target using the new 45nm bandwidth H-alpha filter (Baader) I purchased from Ian King Imaging Ltd. This is 10 subs at 10-minutes per sub, … Continue reading
Posted in Hyperstar and SXVF-M25C
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How not to raise your house valuation
Here’s how the two beer can pinhole cameras look on the South-facing wall of my house. I hope we are not intending to sell within the next year or so as potential buyers may be put off by the sight. … Continue reading
Ultra long sub-exposure photography
I have just made up 2 beer can pinhole cameras (see Justin Quinnell’s website to see how to do this) and fitted them to a wooden frame on a South-facing wall of the house. I have opened the shutter (removed … Continue reading
Posted in Articles, Equipment, Projects
2 Comments
IOM September 2009 – the Iris nebula in Cepheus
At last! September has come around again and we can actually start imaging before 10:00 p.m. hooray!! Less baggy eyes at work the next morning 🙂 This Month’s imaging object is the mysterious-looking NGC7023, a reflection nebula known as the … Continue reading
Posted in IOM
7 Comments
New H-alpha filter ordered – broadband 35nm bandwidth
Conventional narrowband filters (12nm or smaller bandwidth) do not work with the Hyperstar III system due to its very low f#. The cone angle of the rays passing through the filter are so far from normal incidence that the actual … Continue reading
Posted in Equipment, Hyperstar and SXVF-M25C, News
4 Comments
Live and learn!
You will see from a couple of posts below that I had some severe computer trouble. All I wanted to do was upgrade the processor and memory and keep everything else the same, strangely the graphics card played up after … Continue reading
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Regulus also gets the star spike treatment
Posted in Sky 90 and SXVF-M25C
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