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Hawksmoor

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Blog Entries posted by Hawksmoor

  2. Hawksmoor
    Having read this article in the June edition of the Sky at Night magazine I became unusually fired up by the thought of a bit of DIY. After some preliminary rumaging around in B&Q and Maplins, I set about constructing a Yagi aerial under the cover of my car port. Tension mounted as the July edition of Sky at Night, containing part 2 of 'How to use radio signals to catch meteors', landed on our door mat. Following tricky negotiations with my partner, the long suffering Anita, I ordered the pricey bit, the FUNcube Dongle Pro +. I await the delivery of this latest bit of kit in high expectation.
    In the mean time I have completed and erected the aerial which now sways incongruously above the roof of my shed. Its been up two hours or more and as yet I have received no objections from my neighbours. I have decided, rather ostentatiously, to call my shed the Jodrell Plank Observatory and the completed installation the LVST (Lowestoft Very Small Telescope).
    Anita has not really stopped laughing since I erected the aerial, I'm not sure why but hey she is a girl!
    I'm rather hoping I can get this all to work otherwise I'm out of pocket to the tune of £200 and my wife, children and grandchildren will probably have me put in a home for eccentric old folk.

    :smiley:
  3. Hawksmoor

    'One of those'

    By Hawksmoor,

    After many a night of stretching pillow cases over the end of my telescope, no offence intended, I have finally got around to making myself a light-box for taking flats.  I can only hope this will improve my images.
    I gleaned most of the materials from the back of my shed, added a few LEDS and a switch from my best mate Mr Maplin and attached a bungee and batteries from everyone's favourite country 'Poundland'.  It doesn't look pretty but I cant wait to try it. Come on weather make an old man's evening just a little more cheery. I've almost used up the Scandinavian Noir series I recorded from the Telly.  If the I don't get a clear night soon I will be forced to watch tennis or football.

  4. Hawksmoor

    Excitement mounts

    By Hawksmoor,

    It's a very miserable afternoon in Lowestoft. It is raining and the sky is an unrelieved expanse of grey stretching from horizon to horizon. Early this morning the sky was clearer but not sufficiently devoid of cloud to permit the useful deployment of my 'scope. Due mainly to my overwhelming cheerfulness, I spent a happy pre-dawn hour with my 11x80mm binoculars looking at all the usual summer astro-culprits . This afternoon I have been removing malware with mixed success from two laptops. Why do companies and individuals invest so much time in devising and spreading digital diseases across the internet?
     
    On a much more positive note and egged on by my son, I purchased an Altair Astro Lightwave 66ED-R refractor to go on my Star Adventurer mount. Its a very nice looking bit of kit, all new and nicely engineered in its aluminium travel case. Next month I'm off to Northumberland for a week's holiday, so weather permitting and assisted by some of my grandchildren, I should be aquiring some widefield photographs of the 'dark' night sky. No wonder excitement mounts!
  5. Hawksmoor

    Antares

    By Hawksmoor,

    Every year in June the red super-giant star Antares becomes visible from our south facing bedrooms and over the roof tops. This year Saturn can be seen just above the claws of Scorpius,,,,,,,,,,,,,,,,quite a sight without binoculars or a telescope.
     
    I managed to get a nice photo with my little Lumix compact camera balanced on the window-sill. The minimal light pollution after midnight and the lightly applied assistance of APS providing all the help this inexpensive camera needs to capture this star 600 light years distant and nearing the end of its pre-supernova existence.
     

  6. Hawksmoor

    Puss in Bootes

    By Hawksmoor,

    The early hours of the 8th of January were not for the faint hearted. Although the ambient temperature was well above freezing the wind chill here on the UK east coast was significant. After a couple of hours outside I needed a hot cup of industrial strength Marmite to thaw out my inner self. On a positive note the sky was clear of cloud and significant moonlight. I thus set foot to first view Comet Catalina through my big bins and then photograph it.
     
    The comet was far too low in the north east for me to use my big refractor- so bins it was. I store my dustbins in a fenced enclosure on the north side of our house, sounds grand but isn't, and so balancing my bins on the bin enclosure fence I discovered that the comet had conveniently raised itself above Arcturus such that said balanced bins pointed straight at the comet. In the past I have not found comets to be so accommodating.
     
    I must say with the street lights off after midnight, my 80x11 bins did a good job of showing the comet albeit quite a small image. With averted vision I could clearly see the spread of light between the two tails. Nice!
     
    I then spent an hour and a bit with fixed tripod, Canon 600D DSLR and EOS 18-55mm lens, snapping away like a good-un! Twenty or so RAW images later, raw- well the wind was, I returned to the warmth of our house. Today I have done what my partner, Toot, describes as 'cheating' using a number of software programmes to collate and enhance my snaps. I have attached the resultant annotated image for your inspection!
     
    The reasons why I like comets a lot!
     
    They are truly exotic denizens of the deep.
    Their astronomical configuration, position and luminosity are constantly changing in real time.
    They are often hard to locate, they disappear and sometimes reappear.
    They are very old but have the appearance of youth.
    Their performance is unpredictable.
    They are sometimes spectacular and always exquisite.
    They travel alone.
    They are evaporated and reinvigorated by sunlight.
    They are driven and destroyed by gravity.
    They might have created all life on earth and may one day end it.
     

  7. Hawksmoor

    Right up Mount Teide

    By Hawksmoor,

    I decided to try the month's free access to the Bradford Robotic Telescope on Mount Teide, Teneriffe. So thanks 'Sky at Night' Magazine! The free trial is limited to a number of given objects and the exposures and filters are all preset, so you cannot go wrong, but all in all I was quite pleased. I am considering investing the less than prohibitive £3 a month inorder to try out the real thing. Seems to me a very inexpensive way of accessing objects near or below my southern horizon with better kit than I can afford under clearer skies. I also can do it without getting cold or staying up half the night. This month in Lowestoft it has been mega-wet and if autumn turns out anything like the summer, I cannot see me gathering many photons in my backyard!
     

  8. Hawksmoor

    Les Granges

    By Hawksmoor,

    Toot and I had a wonderful week with Olly and Monique in the Haute Alpes. We enjoyed the magnificent dark skies, the stunning Milky Way, looking through Olly's big Dob and drawing and painting with Monique.
     
    We saw for the first time: The Crab Nebula, The Swan Nebula, The Eagle Nebula and all of the Veil Nebula. The Witches Broom was fantastic and through a wideangle eyepiece and Olly's monster of a Dob it appeared almost 3D. We also looked at the Lagoon and Triffid Nebulae before they dropped below the horizon. From our backyard and through my 127mm. refractor, we quite often look at M13 but such views were no preparation for the visual trreat we had through the big Dob at Les Granges. Blew our socks off!
     
    The skies were really dark and each clear night, I treated myself to a couple of hours taking unguided photos with my Canon 400d DSLR mounted on a travel tripod. I have attached a selection of images from our week.
     
    During the day Olly helped me improve my very basic astro imaging digital skills. The man has considerable patience! He also took me through an imaging run using side by side mounted refractors to capture several hours worth of colour and luminance data of M33. Whats more I got to take home the data to practice my new learnt skills. At some stage my version of the M33 data will appear in my gallery.
     
    We really enjoyed our stay at Les Granges, Olly and Monique are very nice people and excellent hosts. I cannot think of a better place to enjoy and image the night sky. During the day and if you can pull yourself away from the laptop, the landscape is spectacular, there are plenty of opportunities for walking, cycling, climbing, birding, photography, painting and even collecting fossils. A great place for both strenuous activiy and rest.
     
    Thanks Olly and Monique
     

  9. Hawksmoor
    When I was a ten year old kid I used my pocket money to buy job lots of old broken clocks from Maidstone Market.  I would take them home and spend hours in my Mum and Dad’s cellar taking them apart ostensibly to get them working again. They never did but hey I never let failure deter me.
    Nowadays, being happily retired (and no gloating intended), I have many an hour to while away in my shed.  Nothing that I can get away with, gives me greater pleasure than recycling old bits of metal, plastic, wood and abandoned technology - for astronomical functions. Sometimes they work and sometimes they don’t – so no change there then!
    My latest project, to construct a thermometer for taking the temperature of stars or as it might be described a ‘Chad Valley Spectrometer’, is well under way.  It remains to be tested but what with the transit of Mercury and the sudden outbreak of rain which followed, I await a clear night with mounting excitement. 
    The ‘Starthrotch Analyser’, catchy name ehh, has been constructed from a vandalised Logitech E3500 webcam, a section of chromed tubing, some aluminium plate left over from a DIY yard gully, 3 BRE hardwood samples from my late and great mate Barry Shulver, a piece of galvanised mesh, half a dozen screws, some pieces of black felt, Gorilla glue and lots of Evostik impact adhesive.  I did have to purchase from ‘Edulab Scientific Supplies’ for about £10 - 3 slide mounted 100 lines/mm transmission gratings.  All in all and if it works, quite a‘thrifty’ piece of kit!
    My daughter, Rachel, was quite impressed. She thought the general appearance of the ‘Starthrotch Analyser’ was very ‘1960s Star Trek’, my partner Toot believes it would not have looked out of place in ‘Blake’s 7-the cardboard years’. Praise indeed!
    I will let you know in a future post whether it works or not, although my best guess is it probably won’t! 
    I wonder if I could make an operational ‘photon torpedo’ from a second hand Halfords top box and an obsolete Tom Tom - SATNAV?  Anything is possible in a shed.

  10. Hawksmoor
    Lowestoft weather has been so changeable, breaks in the cloud so infrequent and the comfort of my fireside chair so all enveloping, that I have hardly ventured out with my scope for what seems an age. Pining for some photons, I set up my DSLR on a tripod and photographed Jupiter dodging the clouds and coming within 6 degrees of the Moon. With a bit of ham fisted Photoshop jiggery pokery, I constructed a composite image of the event. Looks a bit 'Macbeth' but I quite like it!
    If the weather stabilises, I would like to take some 'this season' avi- clips of Jupiter and maybe have a crack at a 'guided' image of the Horsehead or Crab nebulae.

  11. Hawksmoor

    Enthusiasm

    By Hawksmoor,

    Last night, I stood and watched as my ten year old grandson looked through my old 10x50 binoculars and found for his first time; the Andromeda Galaxy and then the Pleiades. Looking out into space and back in time is and should always be very exciting! He was very pleased with himself. Binoculars are a great way into astronomy for the younger child. Negligible set up and minimal supervision required - wide variety of observeable treats and maximum time taking in the view! Have set him a challenge to find the monthly binocular highlights in my astronomy magazine and am looking forward to his reports..
  12. Hawksmoor

    Io Mystery

    By Hawksmoor,

    Some time ago, I published an image of the shadow transits of Ganymede and Io I had taken on the 9th March 2014. The moon Ganymede was clearly visible but try as I might I could not find Io against the clouds of Jupiter. I used APS 'creatively' to try and convince myself that I had found it but eventually realised that if you clicked the sharpening tool enough times in any location on the cloud tops of Jupiter you could create a nice Io just about anywhere you wanted to!
    Anyway and eventually, I stopped clicking my mouse and engaged my eyes and brain. I had always been aware that in my image, Ganymede's shadow was far from circular. I had dismissed this as an artifact of the curvature of the planet, the shadow was close to the limb so an elliptical rather than a circular shadow was not unexpected. However when I thought about it, if it was being caused by the curvature of the planet, you would expect the major axis of the ellipse to run perpendicular to a tangent drawn at the the limb and roughly through the centre of the face of Jupiter. Even a cursory inspection of the image showed this not to be the case. Enlarging the shadow showed that the pixels were centred at two points and one set of pixels was distinctly less bright. Could this be a partial solar eclipse of Io by the moon Ganymede? As Io orbits inside the orbit of Ganymede this would appear to be a theoretical possibility. Any thoughts and advice on this would be welcome.


  13. Hawksmoor

    Man Flu

    By Hawksmoor,

    Have been coughing and sneezing my way through February. When you add "am I feeling up to setting up my scope" to "are there clouds" to "is there too much moonlight" ?? Its all too easy to leave the scope in its box and rack up in front of the fire.
    Anyway, the 21st February presented a fine clear night and I enjoyed imaging the ‘king of planets’.

  15. Hawksmoor
    The pier construction project for my 5 inch refractor is nearing completion. Today, I bolted the oak capping, the mild steel levelling plate and my NEQ6 Pro equatorial mount to the top of the reinforced concrete column.  All in all I think the project will have cost me about £120 for materials but I did have some of the stuff I needed already in my shed.  The weather, true to form, has suddenly turned grim - grey clouds horizon to horizon.  I guess this is my fault.
    Everything seems to have turned out alright so unless the earth crust folds under the imposed weight I should be imaging Jupiter very soon subject to jet stream and cloud cover.
    The fabrication-construction stages were as follows:
    Obtaining via the Internet the laser cut 6mm mild steel disc for making the levelling plate. Drilling it to take the  3 stainless steel threaded studs used to fix the levelling plate to the top of the concrete pier. Drilling it to enable my existing extension pillar/puck to be bolted to it. Cutting and welding reinforcing bar to create a reinforcement cage for the concrete pier. Choosing the best location and marking out for the pier. Drilling my existing concrete paving through into the concrete sub base ( i didn't want to dig the paving up for the pier foundation). Chem fixing shear studs and the bottom of the reinforcement cage into the concrete sub- base. Constructing the timber formwork for the pier. Casting the concrete in two pours. Removing the formwork after 14 days. Painting  the levelling plate using three coats of Hammerite. Making the timber pillar capping and eyepiece tray from some surplius oak kitchen worktop. Boltting and levelling the capping, levelling plate and NEQ6Pro to the top of the concrete pier. Now I can turn my shed endeavours towards Spectrometer Mk3.

     
  16. Hawksmoor
    I like a bit of recycling and so, after I realised that I had not used my old ETX90 RA for at least two years, I decided to get it out of its fabric carry-case and give it 'the once over'. I have to say that little scope is a robust little beggar and optically as sound as the day my partner Toot purchased it for my fiftieth birthday. The fork mount is definitely passed its sell by date but the OTA is definitely too good to waste sitting on a shelf in a bedroom.
    So today I decided to remove the OTA from the forks so that I could use the ETX on my recently acquired Star Adventurer equatorial mount or otherwise piggy-back on my 127mm.refractor. Being a bit cautious, I consulted the relevant pages of Mike Weasner's site and after a bit of a rumage around to find the right sized imperial allen key, I threw caution to the wind and set about separating the scope from the forks.  Once the four hex screws were removed it only required a bit of brute force to slide the two bits apart. 'Houston we have separation' and the jobs a good un!
    The next part I really enjoyed, a quick trip to Maplins to buy a flight case to house said OTA. I really like pulling out the precut sections of foam etc. However, I have relunctantly come to the conclusion that I have run out of items of furniture in our sitting room behind which I can  hide the now seven flight cases from Toot. I have also covered most of my backyard with sheds and if I put anymore stuff in the loft, I will inadvertently convert my house into a bungalow.
    I'm really pleased that I shall be using the ETX again. It will be good for imaging brighter comets and white light solar work.  Hopefully, I will be able to use it to watch the transit of Mercury.
    On a more positive note, less cash or space intensive, a piece of transmission diffraction grating film arrived mail order from Israel this morning. So next week on rainy days I will be working on my Mark2 DIY filter or the 'VCS'  (aka a very cheap spectrometer).  I made the COAA version using an Epson printer to print lines on acetate sheet and this works quite well  (image in one of my albums) but number of lines per millimetre limited by the printers operating parameters.  I have been reading Jeffrey L Hopkins 'Using Commercial Amateur Astronomical Spectrographs' published by Springer.  It is an excellent practical read on spectroscopy particularly suitable for someone like me.  I sit firmly on a spectral line somewhere between 'reasonably untechnical' and 'complete numpty'.

  17. Hawksmoor

    Chasing the Eclipse

    By Hawksmoor,

    As the weather forecast -Lowestoft seafront for the 20th March - was for cloud, cloud and more cloud, my partner and I set off for predicted 'clearing skies' in rural Lincolnshire. This required an early morning call at 4.30am. Strewth this was just like being back at worK! Anyway after quick coffee and cereal, we leapt into rhe 'family wagon' and headed at a brisk pace north west. It was a dark and stormy morning, but as we approached our favoured observation site, a recently manured field twixt Gedney and Holbeach in Lincolnshire, the clouds began to evaporate. As we set up our camera and laptop the sun suddeny appeared through and between the clouds. Donning our eclipse glasses we assumed our default nerd personae and were approached almost immediately by a journalist and photographer from the local newspaper. Clearly, we were a two for the price of one photo opportunity. A number of passing and local folk enquired as to our purpose and state of mind. Many were genuienely impressed by the live view image on my Canon DSLR, of the moon moving infront of the sun.
    We managed to capture some nice images and video of the eclipse. After packing our kit in the back of the car we adjourned to the near by tea room for mushrooms on toast and hot chocolate. At midday, we set off back home to Lowestoft.
    Days later the memory of the eclipse still lingers, as does the smell of manure in our car!

  18. Hawksmoor
    Just got back from Iceland having enjoyed a few days sploshing about in the geothermal waters, looking at waterfalls and geysers and eating lots of cod. As you can imagine, we were very excited at the prospect of seeing the Aurora Borealis.  Unsurprisingly, nights went by under a dense blanket of cloud. Then, on the morning of the last full day of our holiday, the sun came out and so did we.  After a full 10 hours traipsing about a glacier and investigating basalt columns on a black beach we returned to our hotel in Reykjavik.  Night fell - clunk!  One by one all the light pollution came on all over the city - but what was that faint sepulchre glow advancing from the far North across the slate grey Arctic Ocean?  Hurrah at the twelfth hour we got to see the Northern Lights. An excellent display it was too - lasting for about three hours. With the naked eye we could clearly distinguish green , magenta and blue light and we managed to take some photographs. Our astronomical cup overflowed.
    I have attached a rough and ready annimation which gives some impression from the early moments of the display.
     

  19. Hawksmoor
    The 26th of April turned out to be a nice clear night. It wasn't balmy out but on the other hand it was metallic simian cold! Winter was behind me and as I looked up at the waxing moon I noticed that Jupiter was much further west than it had been a few weeks before. I decided to capture my last Jovian images of the season and take a picture or two of the our old Moon. As a bonus I managed to get some video clips of Venus as it climbed above our house extension roof.
    I'm looking forward to seeing the summer constellations and the Milky Way arching over our backyard. As I get older I'm turning into a warm weather astronomer!
  20. Hawksmoor

    Saturnalia

    By Hawksmoor,

    I look forward to Saturn coming to opposition each year or each 378 days to be precise. The sky over our backyard in the early hours of the 24th of May was clear and the stars shone bright. In the east, the stars of Cygnus and Lyra were shining brightly and Saturn was a brightish yellow presence due south over my neighbour's house rooftops. Through the eyepiece its rings shone bright, the Seeliger effect making a clear difference. Sadly, my imaging and images were affected by the planet's low altitude and the turbulent atmosphere through which the reflected light from the planet had travelled. Images taken with my 2.5x Barlow were significantly better than those in which I used my 3x Barlow.
     
    I managed to get some still images of the planet's moons using my Canon 600D DSLR and made a composite image using the image of the planet obtained with my QHY5v camera. I really like placing the planets in a starry background. For me it provides context for the subject of my photographs.
     


  21. Hawksmoor

    Supernova SN 2014J

    By Hawksmoor,

    The evening of the 9th of March was cloud free and clear and presented a number of photo opportunities, e.g a double shadow transit of Io and Ganymede, obtaining spectra of Sirius and Betelgeuse (with my newly homemade diffraction grating), Supernova SN 2014J in M82, the planet Mars and a small comet in Gemini. Well the moon put paid to imaging the comet and Mars would not get above my hedges and trees until about 1.00 am. so I decided to save them for a better night later in the month. I had an accident two weeks ago and am nursing two broken ribs and a haematoma in my right bicep so did not fancy staying out later than midnight (when the Council turn off the street lights) which meant that in imaging M82 I would have to contend with light pollution from both Great Yarmouth and Lowestoft. Anyway, I managed to capture some photons and am currently processing them. All things being equal I'm quite pleased that I could see and image the Supernova ( at my age I might not get to see another one through the eyepiece). The image was created from 9x30sec lights, 3x darks and 3x flats stacked using DeepSkyStacker and finished using APS. I used a Canon 600d DSLR, a Meade 127mm Apo at F7.5 all on a NEQ6 mount (unguided)

  22. Hawksmoor

    Pantomime Season

    By Hawksmoor,

    Toot an I have just returned from a short tour of Turkey. Part of the itinerary involved very early pre-dawn starts. Looking out from our hotel balcony on the 4th. December at approximately 04.20 I saw what I thought was a comet . Oh no it wasn't, oh yes it was! At first I thought it was a first glimpse of Comet Catalina. It was approximately south east and close to the horizon. The twin tails appeared to be as they should be pointing away from the sun. But then I returned home to Suffolk and viewed Catalina through my big bins. My comet was much too bright and much lower in the sky than Catalina. So either we spotted a new comet or more likely the con-trail from a twin engined jet flying away from us at an acute angle. Oh no it wasn't, oh yes it was, oh no it wasn't
     
    Anyway I managed to photograph what ever it was with my Canon compact camera. You can make your own minds up!
     

  23. Hawksmoor

    Spectrometer Mark 2

    By Hawksmoor,

    After completing my current oil painting blitz, I spent some time today completing 'Spectrometer Mark2' in the 'clean room' or the kitchen as my wife likes to call it.  The primary reason for the redesign is my desire to use either my QHY5v or QHY5-11 as the imaging camera, without dedicating either camera to capturing spectra.  So a modular approach seemed sensible and the ability to experiment with different diffraction gratings was also an objective.  Mark1 was virtually built for 'nowt',  Mark2 has required the expenditure of a few quid mainly on purchasing an extra mounting bracket for the QHY5 (I already had one in my bag of astro bits and bobs).  I made the base from hardwood samples  handed down from my late and great mate Barry Shulver.  The tilt and turn mechanism, for holding the diffraction transmission grating, was fashioned from a camera holder and tripod obtained from everyones favourite country 'Poundland'.
    I used an on-line transmission grating calculator to work out the diffraction angles for different gratings and basic trigonometry to calculate the distance between the gratings and the cameras chips to fit the first order spectrum on the chip.  Hopefully, if I've got it right , it should work ok - so watch this space for my continuing 'Chad Valley' exploits in 'Off World Spectra'!
     



  24. Hawksmoor
    You could have knocked me down with a feather, when at 1.00 am. yesterday my partner said "why dont we go down to the seafront and see if we can spot the Aurora".  So off we went in the family truckster with tripod and camera box in the back.  We were originally going to set up base camp at the UK's most easterly point but the lights from the Birdseye factory were a problem. We ended up on Corton Cliffs with a fine view North towards  Great Yarmouth and the offshore wind turbines. Well after an hour we had both convinced ourselves that there was a green auroral glow hugging the horizon. I took a number of 30 second images at ISO1600 with the aim of putting together a panorama using Microsoft ICE.  Well here it is believe it or not?
    The red glow is light pollution from Great Yarmouth - those 'Norfolk Boys' dont turn the lights off at midnight like us ECO warriors in Suffolk.
    We returned home for 3.00am and had some pea soup to warm up - nice.
     

  25. Hawksmoor

    Funny old week

    By Hawksmoor,

    Last few days it has been very hot, so quite unusual for us folk on the windy East Coast. Even went in the sea and it was WARM!
    Due to haze and visiting grandchildren didn't use either of my telescopes but on the plus side had some great wide-field views through my 11x80 binoculars . M13, M92 and M31 :smiley: :smiley: :smiley: . Managed to view a number of very bright slow moving meteors, quite beautiful! I also thought that with averted vision I could just pick out a grey dot where M57 should be, but this could be old eyes and wishful thinking! :shocked:
    Worst shock horror! Visiting my friends on their boat I dropped my trusty and well used Lumix compact camera in 6 feet of murky salt water. :mad: Good news my long suffering partner bought me a new one. :kiss:
    I am still testing my homemade meteor detecting radio telescope (The LVST). Have been building a website for it. If interested please visit at
    http://missbissuk.wix.com/lvst
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