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About Andywilliams

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    Star Forming

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    Hawkes bay, New Zealand

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  1. Andywilliams

    which dslr

    Thanks Dave, I am aiming to use my modified 40d on a long lens or a WO61 and I should then have all the bases covered ! cheers, Andy
  2. Andywilliams

    which dslr

    Hi Michael, thanks for your reply.....im not sure what you mean by it undersampling with the WO61 though? cheers, Andy
  3. Andywilliams

    which dslr

    I'm sure this subject has been done nearly to death but a search in here for this specific topic yields not the results I need and the major sites for milky way photography appear to give conflicting advice ! So my question is the following.... I am in the market for a new dslr which is my favoured weapon of choice. I am starting to do some widefield nightscapes and stitched milky way images. I currently have a modded 40d which I plan to keep for my long lens and hopefully soon a WO small refractor on a star adventurer. For the widefield nightscapes, my 1000d is not cutting the mustard with sensitivity etc. So.....do I upgrade to a newer model APS-C sensor camera? (i'm thinking an 800D) and spend the cash I will save on wide lenses and a WO 61?....or shall I bite the bullet and go for a full frame sensor camera (i'm thinking 6D) for my panoramas and nightscapes as the best option? All advice is gratefully received Cheers, Andy
  4. Andywilliams

    IC2118 witches head nebula

    P.s I’m very happy to supply the stacked dss file if anyone wants to use their expertise on processing with it?
  5. Hi all, Here is my first go at the witches head nebula and I am searching for your expert advice and knowledge. This is a total of 80minutes of 3 minute exposures on my dslr and stacked in dss. I have stretched the bejeez out of this in gimp and I am quite frankly disappointed with the detail. I would have thought with an hour and a quarter of data that I would be able to tease something more impressive of the nebula? What do you think? Canon 40d modded 70-300 lens @ 70mm (image heavily cropped) 28X3minutes lights 20xdarks 30xbias No flats (hence the gradient I guess)IC2118 witches head nebulaCanon 40d modded,70-300 lens @ 80mm (image is cropped quite heavily) Iso160028X3min exposures stacked in dss and processed in gimp 28X3min exposures stacked in dss and processed in gimp
  6. Wow! What a steep learning curve photoshop is !? After an evening of hair tearing out.....I finally came up with this. It was taken from my backyard in the Hawke’s Bay NZ on the night/morning of the 31st/1st. Canon 1000d , 75/300 lens at 300mm, star adventurer Mount and various shutter speeds and iso to capture the different stages. Thanks for looking......my poor wife was wondering what all the muttering and swearing was as I explored my new territory of photoshop ! I have now returned to a state of zen Cheers, Andy
  7. Andywilliams

    Markarian's Chain

    a wonderful image !
  8. Andywilliams

    limit of dslr exposure times

    my 40d is modded.....unfortunately my 1000d is not. Im glad I asked the question because it has given forth some very valuable info......so thanks to you all for your knowledge and do keep it coming !!
  9. Andywilliams

    limit of dslr exposure times

    Hi Adam, Thanks for your information. So to recapitulate your main points here.....less subs in amount but longer subs and shot at a lower iso....this will give better results with the 1000d, yes? In that case, does the same apply for the 40d ?.....my other camera is a modified 40d. cheers and clear skies, Andy
  10. Andywilliams

    Full frame dslr -your opinion please

    Many thanks Olly, No flak coming from this quarter ! In fact quite the opposite..... You have just saved me a minimum of $1300 i guess as a newbie, things that may seem rather obvious do not necessarily occur to me . Skymap pro here we come.....and thanks heaps for the tips. cheers, Andy
  11. Greetings all, I am getting into all sorts of trouble miscalculating FOV with my cropped sensor dslr’s ...... So my question is the following. In your opinion, which is the best value for money and most suitable for Astro photography full frame dslr for a keen guy on a modest to medium budget. In fact, is there a favourite amongst you? A sort of standard go to camera with a full frame. I look forward to hearing from you, cheers, Andy
  12. Andywilliams

    limit of dslr exposure times

    Thanks for your interesting reply Nigel. i would be interested in a definitive answer on the iso performance of the 1000D ......anyone from Canon in here ?
  13. Andywilliams

    limit of dslr exposure times

    My question seems to have elicited some interest......out of interest maybe some of you would like to post your longest single subs on DSLR?.....so that I can see what I can expect out of my camera? clears skies and thanks again to one and all
  14. Andywilliams

    limit of dslr exposure times

    Many thanks for your interesting answer Bob. I am really not up to speed with dithering at all.....I cant work out how I can move the mount manually in declination without spoiling my polar alignment? 10 minute subs sounds great ! cheers, Andy
  15. Andywilliams

    limit of dslr exposure times

    Hi Derek, thanks for your reply. It seems to me looking on here and Astrobin that with DSLR people seem to use not much more than 300 seconds (5 minutes) and the multiples of that stacked, maybe this is the optimum? Thanks for approaching the other important question that I forgot to ask, namely the optimum period of time to allow the sensor to cool....i'm afraid my knowledge of these electronics is lacking so all advice is welcomed. cheers, Andy

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