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glowingturnip

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About glowingturnip

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  1. a so-so Saturn and a rather iffy Mars !

    fixed the background:
  2. a so-so Saturn and a rather iffy Mars !

    ugh, I've just noticed I've picked up a bit of a colour-cast to the background of the Mars image when I was fiddling with the saturation. Oops
  3. a so-so Saturn and a rather iffy Mars !

    wow, thanks for that, you could well be right. I did look at a few online atlases, but wasn't really getting it. I've got a timestamp on the original videos of 22:44 on 30/5/16 if that helps, although that could be +/- an hour since it was shot in Spain and I'm not sure which timezone the computer would have been set to. Those are an excellent globe and map by the way, quite something.
  4. a so-so Saturn and a rather iffy Mars !

    haha, you're too kind :-)
  5. I don't often do planetary imaging since I don't really have the focal length for it, but I finally got round to processing these two, which have been sat in my processing-to-do pile for ages... Saturn, taken Aug 2017 Mars, taken during the opposition in May 2016, remember that ? I think the dark blob to the upper right is Syrtis Major and the blob to lower left is Sinus Meridiani, though it's kind of hard to tell ! The Mars was taken through my old 750mm scope and the Saturn through my new 1000mm, other equipment as per sig, taken with the QHY through (ahem) a 2x barlow stuck in the end of a 2.5x barlow ! Hope you enjoy ! Stuart
  6. M42 in HOO

    thank you, I'm very pleased with this one, probably my best yet, even though it's such a done-over target ! Onwards and upwards
  7. M42 in HOO

    thanks both :-)
  8. M42 in HOO

    Here's my first attempt at bi-colour HOO narrowband, using the OIII filter I got for Christmas Please do click through to Flickr and have a look at it with the magnifying glass, there's loads of detail in there. 23x600s Ha, 20x60s Ha, 10x600s OIII, 8x60s OIII, darks, flats and bias, equipment as per sig, Pixinsight. It was an absolute joy to process this, it was singing to me from the very first trial combination of stacks. I had lots of fun playing with colour balances (actually it's more like HOo, and then I let the red grow a bit, looks like a watermelon to me). Had fun with the HDR too. I've done some HaLRGB before, and I have the skies for it, but I'm finding HaLRGB to be quite frustrating - takes ages to process to get the balance right, and even then it seems to be a compromise between the detail of the Ha and the colours of the RGB, and all too often, it comes out like a big red smudge. I've got a Pacman in processing that might just end up left on the cutting room floor. It seems I've finally tamed my collimation and coma demons, but on this occasion, my guiding was surprisingly shocking. I normally get something like 0.45" rms error, but this time was as much as 2.5". We'd had near-gales the few days before I took this, and while it was calm at ground level on the nights I was capturing, I guess it was still hurtling around in the upper atmosphere - pretty twinkling stars, and a rather less pretty guide star bouncing around all over the place in PHD. I had to throw away nearly half of my OIII because the stars were too fat, as you can tell from the capture details above. Just for a laugh, here is my first attempt, taken 6 years ago with an unmodded DSLR - a shamefully small set of data (ahem, 13x10s !) and processed within an inch of its life (I think this was about the 4th reprocess), but not a bad attempt I suppose. Anyway, hope you enjoy, comments and cc welcome ! Cheers, Stuart
  9. Relisted - Astro-modded Canon EOS 1100D DSLR - £250 +p&p ono

    haha, thank you !
  10. Relisted - Astro-modded Canon EOS 1100D DSLR - £250 +p&p ono

    It's the standard mod. Quoting from Juan's website: "the optical assembly in this model comes with two filters. One of the them is a low pass IR UV cut filter which is retained in the modification. This filter is needed when the camera is used in refractors in order for the telescope to achieve focus at all wavelengths. In the modification, the only part removed is the terrestrial colour correction filter, responsible for blocking much of the hydrogen-alpha radiation typical of emission nebulae." So it's had the terrestrial colour correction filter and the LP1 filter removed, but the IR UV cut filter is still in place, so it should reach focus with refractors. HTH, Stuart
  11. I don't have a finished image, that's virgin data there - looking forward to seeing what you make of it ! should look something like this (someone else's image): let me know how you get on
  12. Pixinsight, just like you :-)
  13. I can help, here's a link to a zip file with some raw data for the Outer Limits Galaxy (NGC891) - https://www.dropbox.com/s/qx0oer35zup1zr2/outer_limits.zip?dl=0 (400MB) I've already calibrated and integrated the flats, darks and bias since it's way too much data to upload otherwise, but you've got all the raw L, R, G and B lights in there. Everything should be self-explanatory. Not enough data really, needed at least another night, and I kind of got bored with the target and went off nebula hunting instead, but you should be able to make something of it. Probably some coma in there too which I've since fixed, but it's a small target so should easily crop away. Equipment used is as per my sig. Nothing dodgy in that zip file, I promise ! Please let me know once you've downloaded it, because I want to remove it from my Dropbox. You can use the data as you wish, on two conditions: - if you publish it anywhere, credit me for the image capture - you send me a hi-res xisf or tiff of your final work for me to publish if I want (I'll credit you for the processing if I do) Cheers, and have fun, Stuart
  14. Relisting this, since the previous sale was a fraudulent attempt to buy it from a hacked buyer account on eBay. Item is still for sale. Be careful out there people. ------------------------------------------- For Sale - Astro-modded Canon EOS 1100D DSLR. Excellent condition, as new, shutter count only 3,158. Bought new and professionally modded from http://cheapastrophotography.vpweb.co.uk/, original cost £385. Selling for £250 + £8.55 Royal Mail Special Delivery, ono. Camera has had IR cut filter and anti-aliasing filter removed for excellent response to Ha near-infrared wavelengths. It has Magic Lantern installed, with amongst other things, intervalometer and bulb timer controls enabling automated capture of darks, bias and even lights, though I would recommend taking lights coupled with APT. Includes strap, T-ring, eyepiece cover (use it when capturing to stop light leaking in), battery (no charger sorry, I lost it), brick and adaptor for mains use, memory card with Magic Lantern installed. I'll include an old T adaptor as well, just so I can ship it with a lens cap on, but you might want to get a newer one. No lenses. Payment via Paypal. I will only ship to the Paypal account holder's address. Selling as I've moved on to CCD lrgb and narrowband. Reserving the right to withdraw offer as is advertised elsewhere. The settings in the camera have been adjusted (WB SHIFT/BKT =B9G9 ) so that it will take colour-corrected daylight photos when used in AWB (auto white balance setting). It is also advised to use the camera in AV mode for daylight use (as 90% of photographers do). Please notice that any other white balance setting: daylight, tungsten, etc will produce pictures with the typical tinge of astromodified cameras. This white balance correction works well in daylight photography. If you want to use the flash, you will have to call it via the external flash button in the camera. Otherwise, the camera will ignore your selection of white balance to AWB and it will change automatically the setting. There is a situation where the auto-correction does not work well, though. This is during non-astronomical photography at night in artificial tungsten illumination. For those situations, it is advised that either the flash button is used or a custom white balance is taken. The same white balance can always be used under those circumstances. The LP1 anti-aliasing filter (AAF) in the camera has also been removed to increase picture sharpness. For astrophotography, it is recommended to set white balance to daylight and ISO 1600. The camera seems to produce the best astronomical pictures with these settings but, of course, you might prefer using other parameters. It has a memory card with Magic Lantern installed in it. Please set the mode to manual 'm' and press the bin button to access the Magic lantern menu. Cheers, Stuart
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