Friday 1 July 2011

The Harp Star.

The Harp Star -Vega
I started out last night with the sole intention of imaging M13..  after a few attempts I became distracted by the beautiful brilliance of Vega.

Vega resides in the constellation of Lyra the Harp, this blue-white star is sometimes called the Harp Star.

In Greek mythology, Lyra the harp is said to have been played by the legendary Greek musician Orpheus. 

And whenever Orpheus started to pluck those strings, nobody it was said could resist listening.

Obviously Orpheus was busy last night, for Vega the Harp Star grabbed my attention.

I attempted imaging using a Nikon D50, connected via prime focus with a x2 Barlow.

I tried a 20 second exposure, and was able to capture the above photo.

Thank You Orpheus.

Tuesday 28 June 2011


Yesterday was cloudy, windy at times, and spotting with rain, the Sun was nowhere to be seen for much of the day...!

I really was looking forward to visiting Cygnus with the Tal.

I wondered if I would be able to observe at all tonight.

The evening arrived, the clouds moved away, and a glorious summery evening was revealed.

By midnight the skies had darkened enough to get out there and observe.........

First on my list Albireo........

Albireo was the first double I ever viewed, back in 1979 with my 40mm Tasco table top refractor.

This double will always evoke fond memories.

Tonight though it was not shining with it's usual intensity, probably because of atmospheric turbulence.....

Sadr was next on the list, but as always, there are so many stars in this region that I was easily distracted.

I happily wandered of on a mini tour of our Galaxy with my 32mm eyepiece.

I then spotted a beautiful meteor......

It's radiant was close to Sadr and it made its way fairly slowly towards Ras Algethi.

It was at least of first magnitude, maybe slightly brighter, and golden in colour.

This event brought on a haiku:

Bright Meteor 
Racing across the night sky
But a speck of dust....

M13 next.... the 25mm plossl displayed it easily .
The view with my 8mm hinted at individual stars on the perimeter with averted vision.

M57 was easily found with the 25mm. The 8mm didn't  give any more detail, as expected.

From M57 it was up to the Double Double Epsilon Lyrae.
The 8mm xcel and x2 barlow displayed lovely Airy discs on all four marble white stars, a fitting testament to the Tals mirror.

I like John Herschels' description of these discs:     ...the star is then seen (in favourable circumstances of tranquil atmosphere, uniform temperature, &c.) as a perfectly round, well-defined planetary disc, surrounded by two, three, or more alternately dark and bright rings, which, if examined attentively, are seen to be slightly coloured at their borders. They succeed each other nearly at equal intervals round the central disc....   * source at foot of this post

Gamma Delphinus was next, though tonight like Albireo it was slightly fuzzy and not at it's best.

M71 in Sagitta...  found it with the 25mm plossl, but it was fainter than usual, probably due to the light pollution from a nearby streetlight....

Vulpecula next and M27...I found it easily with the 25mm, and it was quite impressive with the 8mm.
The dumbell shape was slightly hinted..very slightly.

An interesting point was.... that with the 25mm eyepiece I could make the Dumbell disappear with direct vision...then make it reappear with averted vision..


It was getting late by now, so I decided to have one last look at Cygnus.

I spotted M56, it was barely a smudge in the 25mm plossl... a little bit more of flying over the Milky Way ..

Then it was time to pack up....

I spent another 10 minutes or so just lying on the observatory floor, looking up and just marvelling at it all.

As John Cage once said "Everyone is in the best seat"

Whilst spying the glorious heavens above tonight..it sure felt like it......


*   http://en.wikipedia.org/wiki/Airy_disk

Friday 27 May 2011

Binoculars, Peltier and Lawn Astronomy....

“Were I to write out one prescription designed to alleviate at least some of the self-made miseries of mankind, it would read like this: “One gentle dose of starlight to be taken each clear night just before retiring.” ..Leslie C Peltier

It's been really quiet here of late in Simpson Cross, not much observing as the weather has been really bad. The night skies that have appeared were not really that good for astronomical observations, I've spent the time available just observing with binoculars.

Newcomers to the hobby of astronomy invariably look for a telescope as their first instrument. This is false economy I feel.

I would suggest the humble binoculars everytime.
They're light, inexpensive and very portable..and there's loads to see in the night sky with them.

My favourite pair of 8x30's only cost £5. I used to have a very useful pair of 10X50's that only cost £1.50...they looked really rough , but the optics were fine.


If it's cloudy with no stars to view , read a book....that's what I do.....
As the weather has been playing up I have spent some of that lost observing time reading a brilliant book by a famous amateur astronomer, it's called The Starlight Nights  by Leslie C. Peltier .

I have to say this book captures my feelings about amateur astronomy perfectly.
The chapters I'm reading at the moment are based in the 1920's  and 30's.

It shows the reader a world were the pace of life was much slower.
A bygone age where our modern nightly orange glow of so called progress hadn't yet touched.

It seems to me with all our technological haste we are missing out on the simpler slower things of life.

The darkened night skies are one of these simplicities.
Leslie C Peltier's Starlight Nights reminds us to slow down.

I can't praise this book enough...


Famed comet hunter David H Levy gives a wonderfully succinct view of this book:
Many books explain how to observe the sky; Starlight Nights explains why.” 


Looking forward to warm summer nights
 Lawn astronomy
Hopefully the month of June will bring better night viewing than May. 
Summer is close, the nights are getting warmer and my annual " Lawn astronomy" season is close.... 
Let me explain:
Because most of the year seems to be cold, wet, windy...I guess you know what I mean....!!! , it's really nice to find a few weeks of the year when the ground is dry and the night time is hopefully warm & balmy. On these rare occasions I like to spend my nightly observing session simply lying in the back garden looking up at the stars overhead....
Often I wear headphones that are playing Jean Michell Jarre's  "Equinox" album.... 
This particular music and the beauty of the stars above, coupled with the warm evening,,, really is  therapeutic .......


Here's to a good summer ....
Clear skies   hopefully
Mark

Friday 13 May 2011

6x5 foot Observatory.


Just as you're about to observe... here come the clouds!

A familiar tale for all astronomers....not any more, here in Simpson Cross.

A couple of weeks ago one of our neighbours kindly offered a pile of scrap wood for our fire.

It just so happened most of the scrap wood was the remains of his 8x6 foot garden shed.

I managed to salvage enough wood to make a start on an astronomy shed. I had two complete side panels, and enough wood to build the two remaining sides.


The building started on what must have been the hottest days of the year so far.

Somewhere I had heard it was the hottest April in the UK since 1911 !

The two sides bolted together quickly but the structure was still swaying quite a bit.


Good job there was no breeze that day.

After fixing the remaining two sides the structure became really strong.... It might just stand up to the Simpson Cross  winter gales.

I was going to make a roll of roof with support posts, but as the observatory is only 6x5 foot 
I can easily lift off the roof when needed..


There's still a lot of work to do before the scope is fixed permanently, but at least the main structure is in place.


The cost so far has been for screws, hinges, nails, and extra wooden batons. Total spent so far £35.

I've made the roof frame, now I have to get some covers on it..

To set up my telescope previously required the eq platform to be taken outside, back to the house for the counterweights, back to the house for the tube, setting levels, align North...observe.

In total about 10 minutes.


With this observatory, I slide the roof frame off completely, open the observatory door, sit on the stool...observe.

In total  30seconds.

I've got a feeling that when the Winter returns, the amount of observing time is going to dramatically increase.


I'll post more pictures of the observatory as I go along.


Monday 9 May 2011

Solar Observing ..Maidenhall car park ..Newgale.

I'm happy to report the weather behaved itself yesterday.

We arrived early and having made sure to pack the car with all the equipment I needed, I began  confidently to assemble the scopes.

Just one problem.....I had forgotten one "minor" item...the actual sun filter!!! ...

Luckily we only live 3 miles from Newgale so Helen was able to quickly go home and pick it up.

It wasn't long before Phil, a member of the Preseli Astronomy & Science Group arrived.
This was our first meeting, we had talked via the PASG forum, on several occassions. It was great to finally meet up.


Phil arrived armed with two refractors ...

A  meade 70mm was to be his main solar scope...and it proved to be a good choice for solar work...infact it  had the edge over my Tal reflector.

We carried out a few tests with each scope... Refractor Vs Reflector..

There did seem to be slightly better contrast with the refractor.

Such a portable refractor is ideally be suited for solar work out and about.

Once I find a decent donor refractor I'll make myself a "mobile solar scope" and keep it in the car.


During one session the dust cap for the eyepiece on my scope inadvertently  moved into direct focus of the suns rays ...only 2 second maximum ...but it was enough time to melt a sizeable hole in the plastic dustcap.
.
Always goes to show that even though great care is taken....respect of the Sun is paramount.....

Please always observe safely and carefully!!!




A couple of passers by took an interest in our observing, and were impressed by the sunspots they could see. Mention was made by one visitor of the wonderful late Summer Moon rises over Simpson Cross...as viewed from Roch....

Maybe a visit to Roch in August/September is in order.... I know a good spot...up by the bottle recycling point, good parking a picnic area, and wonderful almost 360 degree views....

Perhaps I'll pencil that one in now.....

The weather behaved itself throughout yesterdays session. There was quite a bit of wind to begin with, but thankfully that eased off as the afternoon progressed.

The observing session was to be 2 hours between 2.00pm and 4.00pm , but thanks to the good company, the session was extended to 6.00pm .


This is the first public solar observing session I have attended...and it won't be the last....great fun!!!

Here's to a wonderful Summer....

Clear Skies 

Mark



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