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Hawksmoor

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Everything posted by Hawksmoor

  1. From the album: Spectroscopy

    First spectra obtained using my homemade diffraction grating on my 127mm Meade refractor. Two mov. clips were obtained by hand holding a compact digital camera afocal style behind the eyepiece. I then converted the clips to AVis, stacked them using AutoStakkert and then played about with the results in APS. I chose the two stars because they are so very different and bright. More by luck than judgement the spectra look remarkably different, so I must be doing something right. I will try using my DSLR and QHY5v to obtain better results. Have read a bit about calibration and somewhat daunted, will give it some more thought. I use some of the functions of the freeware IRIS and have noticed some buttons relating to spectra guess I could always push them and see what happens!
  2. From the album: Spectroscopy

    Making a diffraction grating follow the link. http://www.coaa.co.uk/software_astronomy.htm
  3. From the album: Jupiter

    Double shadow transit, Io and Ganymede.
  4. From the album: Backyard Astronomy

    APS enlargement from my image of two galaxies M81 and M82. Supernova seems to have roughly the same visual magnitude as foreground star GSC 4683 1106 (Mag 11.82). If this is correct, then the absolute magnitude would be -15.9 or put another way a luminance - 203 million times that of the Sun. (Subject to the accuracy of an online magnitude calculator)
  5. From the album: Backyard Astronomy

    Messier 81 & 82 unguided 9 x 30 sec lights, 3 darks and 3 flats unguided unmodded Canon 600d DSLR at ISO 1600 127mm Meade Apo on NEQ6 unguided. All a bit blurry but a good night never the less!
  6. From the album: Backyard Astronomy

    Nice clear night, too much moonlight and light pollution but very exciting to see and image a Supernova.
  7. 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)
  8. Hawksmoor

    MOON Clavius

    From the album: The Moon

    The major craters; Tycho, Maginus and Clavius close to the southern limb. The crater Clavius is a favourite. It's very large and more or less circular with a diameter of 231 km.
  9. From the album: Jupiter

    Just caught the end of Europa's shadow transit at about 23.40 on 02 February 2014. A little blurry, focus a bit out or high level cloud?
  10. Fed up with the rain, wind and latterly moon-Iight I spent this afternoon making some inexpensive astro kit. If the weather improves I'll find out if it works! The house currently smells of sunday lunch and contact adhesive. http://george-artcabinedujardin.blogspot.co.uk/2014/02/moist.html
  11. Hawksmoor

    Messier 35

    From the album: Backyard Astronomy

    Messier 35 is a pretty thing! Early hours of 03 Feb 2014, nice night clear and little wind at 2 deg C in Oulton Broad. 45 x 2 second lights stacked with three flats and three darks at ISO 1600. Stacked in Deep Sky Stacker. One 2 sec light added for star colour in APS. Canon 600d DSLR attached to Meade 127mm Refractor. Must save up and buy myself a focal reducer.
  12. Hawksmoor

    Double Cluster

    From the album: Backyard Astronomy

    Nice night Jan 03, 2014. 9x10 second light frames, 3 flats stacked and photoshopped. Canon 600d DSLR, Eos lens at f=90mm on driven mount.
  13. Hawksmoor

    Horsehead Final

    From the album: Backyard Astronomy

    Add some moonlight, a lot of light pollution, an unguided refractor poorly aligned, a DSLR at far too high an ISO, the heavy handed use of DeepSkyStacker and APS and one old amateur astronomer. Result personal happiness!
  14. Hawksmoor

    Moon X2

    From the album: The Moon

    Jan 2014: Nice gibbous Moon captured with Canon 600d DSLR and 127mm refractor + 2.5x Barlow. Composite of three images put together in APS. One image with enhanced colour to show geological mineral differentiation on the Moon's surface.
  15. Hawksmoor

    Jup 4moons Anno

    From the album: Jupiter

    Jan 2014: Composite: Planetary camera for Jupiter's disc and Canon 600d DSLR for moons.
  16. From the album: Jupiter

    Jan 2014: Nice clear night with red spot visible, 127mm Refractor, QHY5v planetary camera, 1500 frames, AutoStakkert and APS. My best Jupiter so far?
  17. From the album: Venus

    Had a right old laugh trying to photograph Venus through an open bedroom window. Unfortunately, due to Venus never getting high above the horizon and the enclosed nature of our backyard I cannot use my larger refractor on this planet unless I want to move the tripod and mount and go 'walk about'. Instead my plan was to use my old ETX 90RA from the back bedroom. Planetary camera, AutoStakkert and APS did the rest. At least you can see the phase if no detail!
  18. 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.
  19. Spent two early mornings, 4.00am to 7.00am, comet hunting. Second morning more successful, managing to get some images of a very small and faint Comet ISON and the bright planet Mercury with a tripod mounted DSLR. Second session more productive as I swapped the relative warmth of my sheltered backyard for the cold but improved eastern horizon of Lowestoft Seafront. I must say the beach was uncrowded at 4.30am. but oh my it was cold!!!. Why I didn't wear a thermal coat and hat I do not know, but hey that's the excitement of comets. It took me three hours, copious amounts of tea, a fried egg sandwich and a bath before I finally thawed out. Clearly my dear and accommodating wife thinks I've lost the plot.
  20. From the album: Mercury

    Mercury rising over the North Sea. Single shot; 5 secs at f5.6, ISO 1600, Canon 600D DSLR, EOS lens focal length 90mm. Minimal processing using APS. Lights from ships and or gas platforms on horizon.
  21. From the album: Comets, Meteors and Asteroids

    Tripod mounted Canon 600D DSLR, EOS 90-300mm lens at 90mm, 11x 5 sec lights at ISO 1600, 4 darks and two flats, stacked with DeepSkyStacker finished in APS. Images taken from Pakefield cliff looking out over the North Sea between 5.00 and 5.30 am on 10th November 2013. Could not spot the comet visually using handheld 11X80mm binoculars.
  22. Hawksmoor

    PleiadesCluster

    From the album: Backyard Astronomy

    Taken with a Canon 600D DSLR and an EOS telephoto Lens at FL300mm all driven on a NEQ6 Pro mount. 30x30sec lights at ISO400 & ISO1600, 3 Flats and 4 Darks stacked using DeepSkyStacker and finished with Photoshop. Taken at 1.00am on Nov 5th 2013.
  23. Hawksmoor

    Ballenberg 023a

    From the album: Out and About

    The Moon touching the mountains - as seen from Lake Brienz, Interlaken,Switzerland.
  24. Sounds like a great holiday and as usual your drawings are a delight to view. Recently took some of my grandchildren to a cave in Derbyshire to see their first stalactites and stalagmites. They were very impressed!
  25. The evening of the 16th and the early hours of the 17th of August presented clear skies over our backyard and having read about the new Nova in the Constellation Delphinus, I decided to try and find it and photograph it with a tripod mounted DSLR. Even with the help of info from the Internet, finding the Nova amongst the rich fields of the Milky Way was a bit of a challenge. Hats off to the Japanese amateur astronomer, Koichi Itagaki, who discovered it!
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