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Tim

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Tim last won the day on August 26 2018

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About Tim

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    http://russellsgardencentre.co.uk

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  1. Thanks for posting that, was foxing me too without looking at it!
  2. Just re-read your post. Might be worth a try without the MPCC as well so you know where you are working from with a pure system.
  3. Impressive amount of reflection nebulosity captured btw, don't often see that much detail and separation in it
  4. Haloes are normally worse in RGB I find. Ha filters suffer least, and some filters out perform others. Small point, but your diffraction pattern will improve if you can better line up the spider, it will get rid of the diverging lines on the horizontal pattern. Pixinisight has a halo removal routine. I haven't time to look too closely at your image, but I wonder if you would get a less harsh edge to the haloes with pattern on if you used a 1/4" edge mask around your mirror, either that or black the front ground edge if it has one VERY carefully. I would try a black cardboard mask first though.
  5. Tim

    IR CUT filter issue?

    As I understand it, the only reason for specifying refracting lenses would be to alleviate blurring in the IR range which may give a fuzzy look to your stars. Normally, imaging with an IR Cut filter is best practice anyway, no matter the scope as what IR signal does make it through tbe atmosphere is pretty garbled and likely to mush your images a bit by reason of producing the effects of really poor seeing. With OSC cameras, an IR cut filter can increase colour saturation a little, especially in red ranges, which may be welcome. As I say, that's just how I understand it, happy to be shot down
  6. Just use Polaris if you can. Seems fiddly at first, but is a lot easier and less messing about in reality
  7. Tim

    What`s your favourite constellation?

    Orion. No, Cassiopeia, no, Cygnus, no..............
  8. Thanks for the link, just had a read. The resulting images of the side by side, same camera simultaneous imaging session (the only way to do a genuine photographic comparison) remind me of a comment that Ted of Borg telescopes made a few years ago. Somebody asked about diffraction like shadows in the haloes around bright stars and Ted said "Even Takahashi scopes do that". Interesting that the SW photo result did not have those artefacts, and was flatter in the corners.
  9. Tim

    Is it faulty?

    When I first started, I got confused by which stars I was looking at, and failed the alignment that way. Also, where are you getting clear skies from?
  10. As an interesting exercise, if you can get hold of him, ask Es Reid what he has observed as regards Taks vs Esprit.
  11. I'm interested in the forthcoming qualification of this statement................
  12. Rugged, durable, apochromatic optics with three widely varying and useful focal lengths, easy to accessorise and a proven performer with an established reputation. Sorry, don't know much about the TS 130mm
  13. Tim

    Omegon Panorama II eyepieces

    Respectfully, what you may fail to appreciate is that the magazine reviews in question are commissioned, subject to a set of given editorial guidelines, limited to a set number of words, aimed at a particular audience, and are time limited in duration. There is neither the magazine real estate or purchasing audience for the kind of reviews you are suggesting. Those type of in-depth and comparative discussions are much better suited to forum sections where the limited audience who may benefit from them can find them and the devilish details can be discussed at leisure, and where Earnest in Russia may well have room and time to expound or berate the qualities of some item based on his particular expertise and equipment available to do so. The First Light Reviews in the magazine in question are deliberately discursive in content, and introductory in nature, without getting bogged down in the minefield of personal opinions and manufacturer bias that so often blight discussions surrounding eyepieces, as often demonstrated on Cloudy Nights and a regular source of mirth to the more restrained European astronomy community. I hope that helps. Tim in England
  14. Tim

    TMT Great News

    Thank you for sharing this good news
  15. Tim

    Sky at Night , "Book of the Moon".

    Interesting that the writing should be enthusiastic and that it comes across. I have always thought SPM's books were written in exactly his speaking style too. It is great that the personality of the author can make it through the editing process intact
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