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Everything posted by Zakalwe

  1. Be very careful doing this, especially if there is a big load on the scope. There's a very real danger of the telescope swinging round and smashing against the pier/ your head with real force if you load it up without counterweights. You could also deal yourself a serious crushing injury if a hand or arm came between 40Kg of scopes and the pier.
  2. I found that it changes too rapidly to be of any use. The Mark 1 Mesu is best balanced by good old pushing and pulling. The mechanism is quite stiff so it's only ever going to be an approximation but it seems to work fine. Balancing on the Mark 2 is probably a lot easier.
  3. Pay a bit more and get a regulated power supply. Personally I'm leery of using those cheap eBay PSUs (often badged as CCTV supplies). They need casing and they aren't designed to be used in condensing environments. They have the potential (geddit?) to have exposed contacts at mains voltage. One slip-up with a finger in the dark and you could be found dead the next morning. How many times have we tripped or banged our heads in the dark? Also get a decent Anderson powerpole splitter and convert all your gear to Anderson plugs. it#s well worth investing in a proper Anderson crimper t
  4. Hi Torben, I have had a similar experience, so I understand your frustration. A couple of things....RA drift can be solved pretty easily. If you use PHD V2 then you can use the Guiding Assistant to accurately measure the drift amount. You can then calculate the change that you need to enter in the SciTech config tool. See this post on how to calculate the amount that you need to add or subtract in the Tick field to correct the drift: If you use the PHD Guiding Assistant then it will take the first couple of steps out as it will give you the drift amount that it is out by
  5. 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!
  6. 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"!
  7. 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
  8. 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.
  9. OAG received in great order. Thanks for a quick easy transaction Greg!
  10. 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.
  11. Here's another one for the newer GSO focusers: http://polluxchung.com/gso_crayford_fix/
  12. 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.
  13. 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.
  14. 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/
  15. Make sure that you are using the correct version of DSS to suit the camera.
  16. An image taken with a camera phone will always be over-exposed as the imaging system in the camera will be using the whole frame (or a large part of it) to set the exposure level. As most of the image will be black the camera will set an exposure based on that, which naturally overexposes the small percentage of the image that contains Jupiter. The same will happen with a DSLR unless you change the settings to use spot metering. You are telling the camera to set the exposure only on a small area (normally one of the auto-focus points) and ignore the rest of the frame. https://imaging.niko
  17. L12_07_20 Lunt DS Full Disc Normal Proms Inverted Disc Mono by Stephen Jennette, on Flickr 12_07_20 Lunt DS Full Disc Inverted Proms Normal Disc Pseudo Colour by Stephen Jennette, on Flickr 12_07_20 Lunt DS Full Disc Inverted Proms Normal Disc Mono by Stephen Jennette, on Flickr L12_07_20 Lunt DS Full Disc Normal Proms Inverted Disc Pseudo Colour by Stephen Jennette, on Flickr All on Lunt L60DS and ASI178 camera Thanks for looking.
  18. You won't see them........ they're above the wall-to-wall couds
  19. That's a great result and a damn fine image. Looks like the outrage bus won't be as full as we first thought. In other news, tonight's launch of the next batch of Starlink will be testing visorsto shield the antennae from the Sun. https://arstechnica.com/science/2020/07/spacex-will-try-to-launch-starlink-satellites-with-visors-on-tuesday/
  20. Get in the queue...I'm still waiting for delivery of Eagle from 1999....
  21. AFAIK, OneWeb has already received permission from the ITU and authority from OFCOM to use the necessary frequencies, so you've missed that boat. I wouldn't worry about it though, the chances of the UK actually completing on this, modifying the Sat's to carry military grade GPS kit, get the Sat's into an orbit way, way, way higher than they are designed for and for them to be able to broadcast to the ground is somewhere between none and infinitesimally small. It's another pile of taxpayers money gone up in smoke to salesmen smart enough to fool a government minister (a low bar, I know). I
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