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About Tim

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    Coventry UK
  1. mesu 200

    Hi Harry, good to hear from you, sorry it is to do with an issue though. Keep us updated if you can because things like this are a great permanent info resource on SGL. Cheers Tim
  2. Phew !!

    Ok, now the night is old......off to bed
  3. Hello from Birmingham

    Hi David, I'm in Coventry, on the southern edge overlooking town, and probably have similar skies to you. Depending on your interests, there are still plenty of things to look at even in light polluted areas, it is just easier and better with darker skies. At first, finding anything is a challenge, but you gradually learn to recognise one grey smudge from another and the sky starts to come together, and then when you join us at a star camp/star party in a dark sky site somewhere, you can really enjoy the darker skies. Tim
  4. My gut instinct is that you either need to shoot luminance for it, or shoot longer RGB subs if the conditions allow, as it looks like the camera is picking up the background reddish dust, but not much of it, and the required stretch for the nebulosity is making it look blotchy. I don't go for RGB stuff much, skies are too rubbish, but when I do narrowband, I've noticed that shorter subs don't catch enough of the darker nebulosity to really do it justice. Might be worth running some 15 or 20 min RGB if you can get away with them for comparison.
  5. It looks a very interesting area. What program are you using for stacking them Rodd? And which rejection routine and what settings?
  6. Welcome back The answer is, carefully, with a hoover. I found an earwig inside my refractor the other day, again, it seems to be sealed.......
  7. Phew !!

    The night is STILL young John Hoping to get another few hours in yet. You are right, there was a load of very high thin stuff passing over earlier, patchy as well. Things have settled somewhat now though, and so far no problems with dew or rapidly dropping temperatures, which don't do us astrophotographers many favours. My warm room is very warm with a heater on, and if I open the door to the telescope department, the view goes ridiculously bad. But! I'm keen to give the new EP (31mm Nag) a run out tonight, one way or another, so at some point will need to open the portal and retrieve the 10" from the corner of the observing room.
  8. Could be, yes. Carole, if you are up for it, try stacking just the pre-flip images and the flats.
  9. Ooooo, great camera, and capable of amazing images on the right telescope. Will you be able to resist putting it on your scope? I'm not sure I could! The ability of various telescopes to fully illuminate a full frame camera like the 7R varies enormously, and even then the field of view can be affected by optical artefacts, known as coma, and chromatic aberration. If you foresee your purchase actually being used for night sky photography, then definitely go for more questions. (A lot of them will be answered by the recommended book). As for the portability of the 8" dob, it basically comes in two pieces, the base, and the tube. The base is made of wood and normally needs carrying on its own. The tube too is more easily carried separately. Not the kind of thing you would want to carry far, put it that way. Once in position though, there is no faffing around with setting it up, it is pretty much ready to go right away, although if you keep it indoors and then take it outside, it will take a while for the mirror to cool and this will affect the views you get (this is true of most scopes with mirrors). Hope that helps a bit Tim
  10. In the early hours of 6th November 2017, the almost full moon (circa 95% illuminated) passed in front of, or occulted, the 14th brightest star in the sky, Aldebaran, in the Taurus constellation. Thankfully nearly clear skies allowed me to capture the moment just prior to occultation, and the moment Aldebaran emerged from its hiding place, at 02:34 and 03:24. At the same time as my mono camera was clicking away on an Esprit 150ED telescope, (through a Ha filter for contrast and with 200 millisecond exposures), I was able to observe the phenomenon through a small 10x50 finderscope. I particularly enjoy the emergence, as it appears to pop out of nowhere, an illusion created by the invisible dark edge of the moon. Thanks for looking. Tim
  11. Here's a combination picture of the occultation and emergence.
  12. Lens Clear Out (Canon fit)

    Wow, brave decision Anthony, those are some seriously nice lenses, hope it works out for you. You'd have to pry my f2.8 70-200 L from my cold dead fingers
  13. Never had an issue, but have only been buying from them for a decade.... šŸ˜‰ To be honest, I would be more worried by a site that doesn't use a trusted payment service like Sagepay.
  14. Black spot

    It is possible to work out where the dust particle is within your setup by the size of the shadow. Sadly my brain is not up to the maths required. However, as a general rule, the smaller and more opaque the shadow, the closer it is to your sensor, and this one looks like it is right on the filter which covers the sensor in your dslr. By removing the camera body and clicking to lock the mirror up, you might be able to gently blow the dust off to avoid the issue next time. Be careful not to make it worse! If the problem persists, then start a thread asking for help taking flat images, as these will remove many issues from pictures. HTH Tim
  15. FLO Banner

    This came up recently @Charic, Grant says that the adblock software is blocking banners running on the forum software we use, and that they likely updated the software. HTH