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Showing content with the highest reputation since 24/10/20 in Images

  1. 7 points

    From the album: Mars

    Having messed about with one of my blurry images of Mars for most of the afternoon, I may have captured the clouds over Olympus Mons or otherwise I've managed to organize 'noise' into a clump.
  2. 4 points

    From the album: The Moon

    Last night was surprisingly clear in between the increasingly wet and windy weather fronts. After taking some video clips of Mars I pointed my 127mm Refractor at the Moon. Look as I might I could not see any fresh water lakes in Clavius.
  3. 4 points
  4. 3 points

    From the album: Mars

    Last night's 15% stack of 2500 RAW video clips. !27mm Meade Apo Refractor x3 Televue Barlow.
  5. 3 points

    From the album: Deep Sky III

    A reprocess of my M100 image which is also in this album.
  6. 2 points
  7. 2 points

    From the album: Deep Sky III

    LBN 438 is a dusty nebula located in the Lacerta constellation which is also known as the sand worm (from the Dune science fiction series) or the shark nebula. It doesn’t appear very often on SGL, probably because it is so faint ! It is illuminated by interstellar radiation known as Extended Red Emission (ERE). ERE is a relatively recent discovery (1975) and is a photo-luminescence process whereby hydrogenated amorphous carbon is illuminated by interstellar photons in the 500 to 1000nm spectral range. Although the nebula also contains ionized hydrogen, it only emits a relatively weak Ha signal, so I decided to only use broadband filters to acquire the target. The LRGB image shown below was captured with my Esprit 150 and represents just over 13 hours integration time. At the top of nebula is a reddish glow, which I presume is due to ERE. The nebula is surrounded by very bright blue stars which can detract from the relatively faint nebula, so these have been stretched much less than the rest of the image and then blended back into the main image. If you look closely at the background you will also be able to see various small background galaxies (eg middle left).
  8. 2 points
  9. 2 points
  10. 1 point

    From the album: Out and About

    Truth is my arty side overwhelmed my scientific bent and so I combined my conjunction images taken from a bedroom window with my image of Southwold Harbour Breakwater in a full on technicolor 'mash up'. Made for a more dramatic picture!
  11. 1 point

    From the album: Deep Sky III

    In the constellation Cepheus, at 1400 light years from Earth, lies vdB 152, a small blue reflection nebula located at the tip of the dark Bok nebula Barnard 175. Embedded in the dark nebula is the Herbig Haro object HH 450. The faint red streak to the right of the reflection nebula is a supernova remnant known as SNR G110 + 11.3 which appears to be approaching vdB 152. Some of my notes for those that might be interested: Reflection nebulas are created when a nearby star illuminates the gas of at a nebula at an insufficient energy level to ionize the gas but strong enough to create light scattering that makes the dust visible. Reflection nebulas mostly appear blue because particles in the nebula scatter blue light more efficiently than other wavelengths. Bok nebulas are isolated and relatively small dark nebulas containing dense dust and gas from which star formation can occur. Herbig Haro objects are bright patches of nebulosity that form when fast moving narrow jets of partially ionised of gas, ejected from a newly formed star, collide with nearby gas and dust at several hundred km/s. The LRGB image below represents 12 hours integration time and was taken with my Esprit 150.
  12. 1 point
  13. 1 point

    From the album: Mars

    Night of the 9th October 2020. A clear night but unfortunately the Jet stream conspired to make images wobble like jelly on a plate! A stack of 9mins of RAW video clips. 127mm Meade Apo Refractor with 3x Barlow and QHY5-11 colour planetary camera. The best of a poor set of clips.
  14. 1 point
  15. 1 point
  16. 1 point

    From the album: Mars

    As the weather shows no indication of improving this is probably my best effort for the 2016 opposition. Northern polar cap and some clouds (glad they have clouds elsewhere in the solar system) visible. I think Mars is going to be even closer to my horizon in 2018 - think I need to move south!
  17. 1 point

    From the album: DSLR imaging

    From Burrough Hill in Leicestershire, June 2013. Canon 550D with a Tair 3S 300mm lens at f/4.5 mounted on a Skywatcher EG3 Pro Synscan. This is a combination of 20 frames, 2 mins each. Stacked in Deep Sky Stacker software. The lens is from an old Russian "Fotosniper" kit, and it has fantastic optical properties; very sharp even wide open. It has M42 mount so an adaptor is needed to mount it to the Canon.
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