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Zakalwe

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Zakalwe last won the day on March 8 2015

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About Zakalwe

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  1. Dont forget that any filters that are in the light train may also increas or decrease the spacing The best thing to do is get it as close to the manufacturer's specifications and then then test it. It can happen that you need to move it a bit to get the best results (or maybe accept a certain amount of cropping). Wait until you try fitting an OAG and a filter wheel in there, and then wrestle with getting the guide camera in focus at the same time as the imaging camera. Stiff drinks may my required at this point!
  2. Slightly higher? A Mesu mount is almost exactly double the price. They rarely appear second hand, though there might be a few popping up in the next 6 months as the forthcoming recession takes effect. The Gemini is 30% more expensive and that excludes the controllers and shipping The JTW mount is €4100, VAT excluded, so add another 20% on top. And that's assuming that the thing is even shipping. That's a long way from "slightly higher"!
  3. Now we all know that you're not a self-respecting imager until you have a drawer-full of stupidly expensive adapters/tubes/doo-hickeys. The one that you need for the task at hand will naturally be cold-welded onto something else and no amount of swearing at, threatening, brute force, strap wrenches, heating or cooling will separate. Naturally, you will be forced to buy another over-priced bit of aluminium and delay the job until it arrives. To prevent this, try this stuff: https://www.amazon.co.uk/gp/product/B00BTOBHH6/ref=ppx_od_dt_b_asin_title_s00?ie=UTF8&psc=1 Its normally used by locksmiths to free up sticky locks. Yes, you can rub a pencil on the threads, but if your house is anything like mine, pens and pencils seem to magically disappear. I've heard of other solutions- shoe polish, being one, or anti-seize compound. I personally don't like the idea of wet or volatile lubricants being used near optical surfaces in case they creep or off-gas. Too much chance of getting them on fingers and transferring them somewhere that they shouldn't be. The beauty of graphite powder is that it is dry and if any gets on an optical surface then a puff from a blower bulb will soon dispatch it. And, at less than a fiver for a bottle that will last decades, it'll probably be cheaper than buying pencils. Recommended.
  4. Youight be exceeding the total number of hubs allowable? Personally I think it's down to cable length. Active cables can be glitchy. Either shorten the cable to the laptop or investigate USB3 over Ethernet.
  5. OAG received in great order. Thanks for a quick easy transaction Greg!
  6. I use Orico hubs and they seem to work. Even so, I found that some cables would just not work over a longer length. I guess it might depend on the quality of the conductors and what not.
  7. Here's another one for the newer GSO focusers: http://polluxchung.com/gso_crayford_fix/
  8. Have you "tweaked" the current one? Astronomy Shed has guides on how to improve a standard focuser. They usually can be improved to a fair degree with some gentle tweaking.
  9. USB3 is very sensitive to cable quality and length. I have the same camera and it would work on a 4 metre USB 3 cable. I know use the shortest cable possible from the camera to a powered quality USB 3 hub. I have nothing else plugged into that hub. I wouldn't use an unpowered hub with this at all. Try changing the cables too, the quality really does vary.
  10. Download the latest version of DSS: http://deepskystacker.free.fr/english/index.html Go to Settings:RAW/FITS DDP Settings Go to the FITS section. Tick the tab as below. Then select the correct camera type or the correct Bayer matrix in the drop down. Your camera is supported (as listed on the LIBRaw page: https://www.libraw.org/supported-cameras ) There's a good tutorial here: https://astrobackyard.com/deep-sky-stacker-settings/
  11. Make sure that you are using the correct version of DSS to suit the camera.
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