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steppenwolf last won the day on April 10

steppenwolf had the most liked content!

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About steppenwolf

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    Nr. Wiston, West Sussex

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  1. Well done James, this is a tricky object (the Soap Bubble) to capture and boy did you get it close to the edge!
  2. steppenwolf

    An early Pickering's Triangle

    Oh yes, it's a keeper setup for certain.
  3. steppenwolf

    An early Pickering's Triangle

    With that lovely wispy tail to trace out it would be quite a few tiles! Thanks, Sara
  4. steppenwolf

    An early Pickering's Triangle

    The wide field of view was captured with a 100mm Vixen VSD 100 (f3.8)
  5. steppenwolf

    An early Pickering's Triangle

    Thanks for the link, @John You'll be in heaven with that combination - some of my favourite images have been mono using just an Ha filter. Galaxies have never really excited me as much as the dusty stuff which is another reason for diving in early with this nebula as soon as it started to rise!
  6. steppenwolf

    Talk to a Photographic Society ???

    I have given several talks to photographic societies and found this audience to be very attentive as they are being introduced to a totally different photographic model. I split my talk into two sections divided neatly by the 'tea break'! The first section introduces the equipment used, starting with gear that typical 'terrestrial' photographers will already own (DSLR, tripod etc.) and this dictates star trail and star-scape type imaging and then I slowly introduce the more specialised gear that we astro-photographers take for granted. In particular, I find common ground in the use of filters and explain the significance of narrowband and how it fits in with the light spectrum that they are used to. The section half is my 'pretty pictures' talk where I give examples from star trails through to 30 minute deep Ha exposures. Expect some great questions afterwards and don't expect to get anywhere near your own cup of tea!
  7. steppenwolf

    An early Pickering's Triangle

    Pickering’s Triangle (Seimis 3-188) It is a little early in the season to be imaging this object as it didn’t appear above my local horizon until 00:50 when I started the project earlier this month but with nights getting shorter as we approach the summer solstice, it made sense to make an early start even though it took several nights to capture the data while ducking and diving between the clouds and early morning mist! Discovery Pickering’s Triangle is part of the supernova remnant known as The Veil Nebula in Cygnus. The Veil Nebula itself was discovered by William Herschel in September, 1784 but this faint region was only later discovered photographically in 1904 by Williamina Fleming at the Harvard Observatory. The discovery was made post publication of the New General Catalogue (NGC) so it isn’t included in the catalogue. Although it wouldn’t happen today (I hope!), the custom of the time was to credit the discovery to the lead astronomer, in this case Edward Charles Pickering, the director of the observatory. Image Stats Mount: Mesu 200 Telescope: Sky-Watcher Esprit 150 Flattener: Sky-Watcher Esprit specific Camera: QSI 683 WSG-8 Filter: Astrodon 3nm Ha and 3nm OIII Subframes: 6 x 1800 sec Ha, 13 x 1800 sec OIII Integration: 9.5 hours Control: CCD Commander Capture: MaxIm DL Calibration, Stacking and Deconvolution: PixInsight Post-Processing: PhotoShop PS3 Description The nebula can be found in the north-west quadrant of the Veil Nebula near NGC 6974 and 79 (see whole Veil Nebula image below). Lying around 1,400 light years away, the beautiful filamentary elements are the expanding shock-wave from the progenitor star that went supernova here somewhere between 5,000 and 10,000 years ago. Position within the Veil Nebula Visually, the nebula responds well to the use of an OIII filter as the region is rich in OIII emissions as can be seen in the blue/green filaments in the above images. Photographically this is a wonderful object that responds well to both LRGB and narrowband imaging and the example shown here was captured using Ha and OIII filters. Although there are sulphur emissions (SII) in this region, this object responds well to my favourite imaging method of 'bi-colour’. This process uses just Ha and OIII filtration wherein the OIII data is mapped to both the ‘Green’ and ‘Blue’ channels and the Ha is mapped to the ‘Red’ channel. The greyscale images below show the individual Ha (left) and OIII (right) images used to produce this image. As you can see from the 'Stats' above, I have a whole load more Ha to collect to complete the image! The individual Ha and OIII images
  8. steppenwolf

    Equinox 80ed vs esprit 100ed

    Your current telescope is a fully apochromatic instrument so it has very good control of colour. The Equinox 80ED is a doublet refractor with good colour correction but not as good as a true apochromat (triplet lens) - although this telescope represents really good value for money, as your camera is a one shot colour camera, excellent colour correction like that you should achieve with your WO Star 71 should be your goal. With this in mind, I'd save up for the Esprit 100 ED but budget for the field corrector as well as you will need this to achieve a flat field of view.
  9. steppenwolf

    A perfectly good observatory... in bits!!!

    That roof looks really good, Sara - I bet you can't wait to get back to try it all out!
  10. I've just got back from a long walk up on the Downs to watch the sunset and the thin Moon and Venus on the return journey was the icing on the cake! Turning round to look where I had come from and Jupiter sprung into view - a special evening!
  11. steppenwolf

    Width of Esprit 150ED?

    Tube circumference = 58cm Dew Shield circumference = 63cm
  12. steppenwolf

    Colourful Trunk

    A lovely colourful image - nice!
  13. steppenwolf


    A beautiful image, Alan with especially nice golden star colours.
  14. steppenwolf

    Es Reid checked telescopes

    I purchased the Esprit 150 from FLO about 18 months ago and arranged for it to be bench tested by Es Reid. Es was extremely impressed with the optics and general build as am I!

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