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Grant

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Everything posted by Grant

  1. Any plans to get the 'arms'? With the level of details and colours in this shot, if you could get the rest of the constellation to add in, that would be mighty impressive...
  2. Awesome field of view - head to tilt my head though, not used to see it at that angle! Beautiful!
  3. The theme for the 23rd challenge - February 2019 - is the Terminator Challenge! Start Date: 1st February 2019 End Date: 30th April 2019 Rules: The theme this time is 'The Terminator' - we want to see lots of glorious images, videos, sketches and animations of the Moon's terminator. Bonus points for 'Arnie' references! Prize: A personalised mug for 1st, 2nd and 3rd places featuring your image kindly provided by our sponsors FLO and a virtual trophy for your signature. -- RULES All data must be captured and processed by you (no collaborative entries). Data must be captured during the challenge start & end dates. Multiple entries are allowed but please start a new topic for each entry. Multiple submissions of the same image, processed differently, will not be accepted. -- To enter please start a new topic with your image in the ‘Imaging Challenge #23' forum (each challenge will have it’s own). Please post as much information as possible - when it was taken, how it was captured and processed, etc. The info won't necessarily be used for judging but will help fellow SGLers looking to learn and improve their knowledge and technique.
  4. That's a super FOV! Love to see M42 in context with the rest of Orion and with the Horsehead / Flame as well - great stuff!
  5. Just a little tip if you are having trouble balancing - I found the 'Short' dovetail from here: https://www.firstlightoptics.com/dovetails-saddles-clamps/astro-essentials-dovetail-bars.html And a set of these: https://www.firstlightoptics.com/misc/m6-bolts-x2-suitable-for-sky-watcher-st80-tube-rings.html Fits the 72ED rings perfectly and gives a lot more room to get the balancing just right - I was really struggling with the little green dovetail!
  6. I've given up on lead acid batteries - to much hassle and to many that have stopped charging properly over the years, I now use: https://www.firstlightoptics.com/batteries-powerpacks/celestron-lithium-lifepo4-powertank.html https://www.firstlightoptics.com/batteries-powerpacks/celestron-lithium-lifepo4-powertank-pro.html Depending on what I am powering. A little more expensive up front but, no maintenance issues, a predictable discharge curve (i.e. flat!) and they are much, much lighter too. Just a thought...
  7. It would appear to move in the image but, star X would still have fallen on the same collection of pixels on the camera sensor in the first place and that's what dithering is avoiding - it spreads the position of the captured image across different positions on the sensor to average out pixel to pixel differences.
  8. No - the stars would still be in the same relative position to the camera sensor as before so you wouldn't get the benefits of dithering which moves the images position on the sensor as it's captured.
  9. That’s because it is compatible with the ASI120 Mini The ‘mini’ cameras whilst USB2.0 use the new drivers and chipsets and do work fine on the ASIair, it’s only the older generation of USB2.0 cameras that don’t work with the ASIair - all cameras currently for sale will work just fine.
  10. The point on the wall is a good idea - ideally a hole through the house pointing at Polaris ? I’ve done the marks on slabs previously and that was great and saved a lot of time so will definitely do that again as well. I am hoping polar alignment routines will also be added to the ASIair in future to help automate the process a bit.
  11. ZWO cameras and devices only but I believe DSLR support is being added soon.
  12. No polar alignment features in the ASIair yet, but I believe some are planned. I used a StellarMate prior to the ASIair but found the tablet / phone app for the ASIair far superior for control then having to use VNC to remote on to the PI. I thought ZWO recommended their USB3.0 cameras on windows because the driver for their USB3.0 cameras works better on newer versions of Windows? For long exposure work, USB2.0 is absolutely fine and as this is what the ASIair is intended for, I've not noticed any problems - download times take a few seconds but it's not a major issue and during focusing it loops much quicker.
  13. I think the pencilled in dates are the 31st October - 3rd November weekend. I have a feeling there was a reason we had to go for those dates and not the earlier weekend - I think perhaps another group had the rally field booked or it's half term? I am awaiting confirmation from Lucksall of details so hope to get things announced and tickets on sale in the next couple of weeks.
  14. Yes - the December release added dithering.
  15. I'm still having a lot of fun with this little gadget and with each software update, it gets better and better. With wishful thinking on Sunday I was getting things setup for the Lunar eclipse and I was running out of power supplies for the ASIair, and it occurred to me - why don't I plug it in to the back of the ASI1600 where there is a powered USB hub? This worked a treat so meant the ASI1600 was plugged into the ASIair and the ASIair's power input was plugged into the ASI1600's USB hub - saving me some cables and made for quite a neat setup. Had a good night getting my little grab and go setup setup Wednesday which has proved the concept so I just need a proper long night of clear skies to get some real data and a better method of polar alignment as I cannot see Polaris from my garden
  16. The SGL discount ended almost 8 years ago - there’s a thread that explains it here:
  17. Aligning and tracking are two different things - tracking will depend more on accurate polar alignment than anything else. The Starsense is predominantly designed to help with automating alignment by doing it for you - this saves time and effort and can also improve the accuracy of your alignment. It does have polar alignment routines built in but these need to be done as a separate stage after the alignment has finished. If your issue is the tracking ability though and you simply want to improve your polar alignment then there are potentially better / cheaper methods out there that are worth exploring like the PoleMaster of, if you have your own guiding setup you could look at the Polar Alignment routines in things like https://www.sharpcap.co.uk/ Pro - that way you aren't buying additional hardware just for polar alignment.
  18. Congratulations on the new release!
  19. Possibly but it should tell you if it's doing anything like that. Maybe post them as multiple replies within that topic? I can't think why else it wouldn't work.
  20. Nice one JOC! I think there are a few missing though - I counted 23 in the thread and think there is 38 in the vote.
  21. It certainly would if somebody has some time and wants to volunteer to put such a thread together
  22. The voting has been extended until the end of the month as only a handful of people have voted so far.
  23. If you are connecting it to a Sky-Watcher ED80 then it will directly attach to the focuser (you'll need to unscrew the eyepiece clamp already at the end of the focuser first). You only need the adapter Peter is linking to if you are using a non-standard focuser on your ED80 that doesn't have these threads so you can then attach it as you would any other 2" accessory.
  24. The theme for the 22nd challenge - January 2019 - is the Christmas Present Challenge! Start Date: 25th December 2018 End Date: 31st March 2019 Rules: A bit of New Year festive fun. This time the challenge is to image with, through, via, using, in conjunction with anything you were given for Christmas Something you gave yourself for Christmas also counts! Please let us know in the image description what item(s) were used. Prize: A personalised mug for 1st, 2nd and 3rd places featuring your image kindly provided by our sponsors FLO and a virtual trophy for your signature. -- RULES All data must be captured and processed by you (no collaborative entries). Data must be captured during the challenge start & end dates. Multiple entries are allowed but please start a new topic for each entry. Multiple submissions of the same image, processed differently, will not be accepted. -- To enter please start a new topic with your image in the ‘Imaging Challenge #22' forum (each challenge will have it’s own). Please post as much information as possible - when it was taken, how it was captured and processed, etc. The info won't necessarily be used for judging but will help fellow SGLers looking to learn and improve their knowledge and technique.
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