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Posts posted by Uranium235

  1. Great sky out there tonight :) Shame ive had to pack up at a sensible time!

    Its been my first decent go at imaging something for a couple of months, maybe more. But glad I took the time to set up. I wanted a quick start so I went light with the ASI and f2 lens, which seemed to frame the whole thing quite nicely!

    Ive managed to calibrate out the amp glow, and for just 135mm focal length - the result turned out better than I had expected :) 



    50x240 (Ha)

    ASI 178MM Cool, Samyang 135mm @f2, NEQ6

    Thanks for looking :)



    • Like 20

  2. Ok folks, its time for the 2018 showcase :) 

    Please use this thread to showcase your best images captured during 2018. Just one post per member but you can include up to 5 images if you want.

    The thread is for all imagers, both novices and advanced.

    Please keep details to a minimum - scope and camera possibly along with a few comments.

    The thread needs to be packed with images so please don't respond to the postings 

    • Like 3

  3. 12 hours ago, jjosefsen said:



    I'm considering getting one of these bad boys (130pds) and modifying it over Christmas.

    I'm looking at dewheater solutions, and wondering if a glued secondary mirror heater would be preferable to a dewshield.

    Can any of you tell me the diameter of the secondary mirror stalk/mounting?

    I was considering mounting an rca plug in the top of the ota for a more permanent solution instead of having a cable dangle lose up there.

    Just go with thte dew shield, no need for a secondary heater ;)

    I made a my dewshield out of a small bucket (actually it was a from a small bucket of sweets, about 12 inches in height), where I'd cut the bottom off (which matched the aperture exactly) and then flocked the inside. It works perfectly and Ive never had an issue with fogging, not unless a load of mist rolls in and it starts "falling" (like rain) onto the primary mirror.... in which case you shouldnt really be out...lol. :)

    Just have a look around the house or shed, and try to spot things that might fit the aperture - there is always something you can use/modify to fit.

  4. On Friday, November 23, 2018 at 12:59, Whistlin Bob said:

    I've not had too many problems with the focuser and mine seems to hold collimation pretty well- I check it most sessions and it's usually fine.

    The thing I've always thought would be good was a shorter focal length f5 newt to go into the pds range, for a wider angle, so you can really go after some of those giant nebulas like the veil and the California. Wouldn't need to think so much about full frame then. I'd be more than happy to pay a similar price for that.

    Sorry if this is getting off topic...

    The problems I can see with that are:

    1) Using an f5 scope of a shorter focal length would mean less aperture - and therefore would require a smaller central obstruction and secondary mirror size - not a satisfactory result.


    2) A faster focal ratio - which brings up a whole other bag of (perhaps worse) problems. 

    Take a look at the Tak epsilon 130, and you will see the price of a fast widefield newt is rather high ;) 

    However, there is one cheap way around the issue... mosaics! 

    • Like 1

  5. I've been sitting on this one for a couple of weeks, but cant see why I cant give it an airing :) not that I'd want to set up tonight, the air out there is just plain toxic at the moment (bonfire smoke with no wind to blow it away)... almost like a smog.

    Taken with the f2 Samyang and the ASI178MM Cool

    60x300 (Ha)


    Thanks for looking! :)


    • Like 12

  6. 2 minutes ago, Davey-T said:

    Looking good Rob, can't see the hot column :grin:

    Cloud just cleared here sky looks good but it's too late to start now as I have to be up early.


    Did what you said mate and did some bad pixel mapping, ive saved it off as well so I can apply it every time. It cleared up about 8pm here, but im just too knackered to set up tonight :) I'll leave it for another time.

    • Like 1

  7. 30 minutes ago, bottletopburly said:

    you'll confuse him ,using Eqmod does away with having to use the handset assuming you have computer to control mount , having a planetarium software  running is good for reference ,APT can be configured to auto connect to scope in settings , so EQ mod will always be used , but if your imaging then you can use the Objects list in  APT and with platesolving working  to go to whatever target fairly accurately ,then GoTo++ for final framing  ,flick over to CDC assuming you connect to scope and you can see where your scope is pointing on the map if you want ,once you get your head around how it all works you'll be amazed .

    There's not much to be confused about. My recommendation is to use as little as possible at first. Just the capture software, PHD and the handset (only resorting to stellarium for sharpless, vdb, ldn, lbn etc). It's an arrangement that's been perfectly adequate for my imaging needs since 2010. 

    Only introduce other elements once it's settled as you don't want to be in the situation where you're struggling to get the software to work as the stars pass you by. 

    There's been a few occasions at star parties where some have their heads down looking at monitors, pushing buttons and scratching heads - while I'm already well into my imaging run with the simple no-nonsense  approach ;) 

    • Like 3

  8. 1 hour ago, Susaron said:

    Looking at your work @Uranium235 I am seriously thinking on purchasing next year the new QHY550M, with a 3.5 micron pixel and a 2/3 sensor it would be a wonderfull add to catch planetaries nebulae and individual galaxies.


    I just need to clarify that this image was taken with a QSI 683 CCD, and 5nm Astrodon filters (both kindly lent to me by davey-t). 

    The 178MM is still attached to the samyang lens and I didn't want to disturb that setup :) 

    Though a 3.5 micron pixel size might come in very handy for bagging the details of galaxies on the 130pds without going past the theoretical resolving limit of the telescope.

  9. Hmmmm guess I'll be bringing more homebrew rocket fuel to pass the evening... err I mean wine...lol.

    It's been ageing for over a year now so it should be alright... alcohol content = unknown! :) 

  10. In place of a planned imaging workshop this year, I will be running a surgery style session where I can give some 1-2-1 tuition  to those who struggle to get the best out of their data.

    I'll be on call from 10am - 3pm.

    I'll be based in the non-EHU pod on Wye meadow, or if you see me lurking about just give me a shout and I'll will pop over with the required tools for the job  :) 

    Or you can just pop your name in this thread and I'll come looking for you.

    The imaging workshop shall return once my life is a little less hectic ;) 

    • Like 2
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