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Everything posted by bogdog

  1. i would be more than happy with that image,ok there is noise but at iso 1600 there will be you will never get hubble type pics from everyday consumer products,all you can do is best with what you have,and from what i see here you have done well but now you know iso 1600 is a bit much @ 5 min interval as it introduces noise try iso 800 @ 5 min or more subs at iso 1600 for shorter time maybe 3 min subs but more of them ?
  2. maybe some usefull info on here http://www.celestron.com/university/astroimaging/all-star-polar-alignment
  3. why limited to 30s? with that mount you should get around 2 or 3 minutes if not more unguided,so it sounds to me like not polar aligned correctly what is your setup like?
  4. some info and images here http://www.dpreview.com/articles/7282239436/nikon-d810a-an-astrophotographers-perspective
  5. maybe here helps http://cameras.altairastro.com/how-to-use-dark-field-correction-in-altaircapture-to-remove-fixed-pattern-noise/ not sure if this is what your looking for
  6. do you have a polarscope? reason i ask is the cg5 didn't ship with one i had to buy one for mine polarscope is the little scope that screws into the bottom of the mount,and is covered by caps.....not your viewfinder or main scope
  7. and so it begins! lmao it will only get worse as you try to progress,going ccd route will get expensive fast and can be a minefield as to which cam is best for your budget,filters,spacers,filterwheels and so on. get a t2 adapter for nikon this goes on where you would put a lens,then that will screw onto the focuser of scope,use a remote to activate the camera to minimise vibration best to start simple,then if you feel this is for you then save and go all out on the ccd route would avoid the collimation pitfall until you have posted pictures,others can tell you if you need t
  8. maybe fashion something using the motor from an electric window off a car,that way the motor stops/starts when you press the switch scrapyards are everywhere in the world so no shortage,its just how you would design and implement it
  9. used google http://www.neildunnewelding.co.uk/
  10. you would probably be better buying an old m42 lens,you can get an m42 to t2 ring then use that with your ccd
  11. this suggests to me you don't take darks and extract them through the process described in the manual.you just expose to get a picture then save that one picture? you should follow the steps in the manual taking your lights and darks then go through all the steps to stack i also have that camera (used once!) and gave up ,after a night of taking images and then the software baled on me saying it couldn't be bothered or something like that lol ill health has kept me away from astro just now so maybe later i will get it to work,but i am taking the software's approach right now...i
  12. if your finderscope is perfectly aligned to your main scope then try alignment with the camera attached,pick out the three brightest stars you can and see if they match up through camera viewfinder,if you cant see anything in viewfinder take a snap @ high iso to see if star is in view see how it goes then,or drift align on a star to see how far off you are then adjust mount
  13. no idea,maybe just the brightness of the stars reflecting on the glass elements but with it stopped down it should reduce them same with halo's
  14. an amazing shot,nice to see in colour
  15. nice image well done
  16. correct you could cut a peice of card to cover the front of the lens,then cut a smaller diameter hole in centre of the card to allow less light in or pick up a cheap m42 lens,which you just use the manual stops on
  17. cracking image for the simple setup you have well done
  18. 49 @ 5mb or so? it will take time,should take a short video and extract frames ..lower file sizes
  19. well done on your first try of prime focus shooting...now its onwards,upwards and downwards in the world of AP
  20. for a first attempt well done,processing can be hard if you are not used to the programmes involved you haven't stated if you had taken dark frames to stack also? taking some dark frames at time of taking your picture then stack all of them together would reduce the noise,this will help when you get to the processing stage, maybe try again with your stack but dont go to harsh with adjusting contrast/levels to get rid of noise ..it wont work i'm no expert so take with pinch of salt ,others will try to help you if you have questions maybe try just stacking the iso800 fi
  21. use the frre app stellarium and enter in your home position,you can then forward the time to when you are going out and check to see what is avail to you in your position,you can turn on constellation names,planet names and nebulae just clicking the sky around
  22. try browsing through amazon laptops,some good cheapies on there http://www.amazon.co.uk/HP-EliteBook-6930p-Professional-Refurbished/dp/B014SVCE8C/ref=sr_1_5?s=computers&ie=UTF8&qid=1457003994&sr=1-5&keywords=laptop if its just for basic imaging rig,i would avoid the stores ie:pcworldrobberies some still have win7 on them with ability to get win10 free upgrade should you want to,but as davey-t has said it wants to upgrade all the time with updates and does so in the background hogging resources,or continually wants to run windefender app
  23. do your homework on whatever lens you decide to buy,as the 5d,5d mk2 have problems with mirror fouling!! check out this link maybe help you? http://www.panoramaplanet.de/comp/index.html
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