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  1. #11
    Stephen Pitt's Avatar
    Stephen Pitt Guest

    Default Witch with the Canon 10D



    Thank you for those kind words, Chuck.

    Stephen
    =========



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  2. #12
    JJK's Avatar
    JJK Guest

    Default Witch with the Canon 10D

    Lovely shot, Stephen!

    "Stephen Pitt" wrote:



  3. #13
    ValeryD's Avatar
    ValeryD Guest

    Default Witch with the Canon 10D

    "Stephen Pitt" <lthuedk@pe.net> wrote in message news:<bb6e6dd51ccea78cb5347065320fb24b.5675@mygate .mailgate.org>...

    Excellent shots Stephen! Congrats!


    Two questions:

    1. Why the overall color hue is so bluish?

    2. Why did you upgraded to much more expensive SV105 instead of EDT?
    As I remember, your EDT shots were better.


    V.D.

  4. #14
    ValeryD's Avatar
    ValeryD Guest

    Default Witch with the Canon 10D

    "Stephen Pitt" <lthuedk@pe.net> wrote in message news:<bb6e6dd51ccea78cb5347065320fb24b.5675@mygate .mailgate.org>...

    Excellent shots Stephen! Congrats!


    Two questions:

    1. Why the overall color hue is so bluish?

    2. Why did you upgraded to much more expensive SV105 instead of EDT?
    As I remember, your EDT shots were better.


    V.D.

  5. #15
    Stephen Pitt's Avatar
    Stephen Pitt Guest

    Default Witch with the Canon 10D

    Thanks JJK and Valery. The Canon CMOS has an IR filter that cuts into
    the 650nm line giving results similar to the newer flesh tone films.
    They're great for portrait work but only fair for many astrophotographic
    targets. The result is a somewhat skewed colour balance deficient in
    red. A Witch Head I shot a week earlier had warmer tones but was
    slightly out of focus:

    http://www.light-to-dark.com/witch_10d_sv105.html

    So, I had to revisit it. Both tend to be red-deficient.

    The SV105 is an apo. I still own the EDT.

    Best regards,

    Stephen
    ==================================

    "Stephen Pitt" <lthuedk@pe.net> wrote in message
    news:bb6e6dd51ccea78cb5347065320fb24b.5675@mygate. mailgate.org





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  6. #16
    Stephen Pitt's Avatar
    Stephen Pitt Guest

    Default Witch with the Canon 10D

    Hi Tom. I believe Hutech recommends using an IR filter over the lenses
    for terrestrial use.

    For me, the modified 300D would be a dedicated astrodigital camera.

    Stephen
    ================================================== ==============

    "Tom Polakis" <polakisgroups@cox.net> wrote in message
    newspr2c79bxh9a1vn4@news.west.cox.net





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  7. #17
    Stephen Pitt's Avatar
    Stephen Pitt Guest

    Default Witch with the Canon 10D

    Tom, I wanted to add:

    The CMOS isn't "blind" but deficient to H-emission nebulae; it still can
    be used, and software stretching can be applied to the red channel:

    http://www.light-to-dark.com/m42_sv105_10d.html

    Yes, there are objects that are simply impractical to shoot with the
    stock Canons, like the North American and Seagull Nebulae, but others,
    like the Lagoon and Omega Nebula turn out fine. Don't be discouraged.

    Stephen
    ====================================

    "Tom Polakis" <polakisgroups@cox.net> wrote in message
    newspr2c79bxh9a1vn4@news.west.cox.net





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  8. #18
    Davoud's Avatar
    Davoud Guest

    Default Witch with the Canon 10D

    Stephen Pitt:

    I have no experience with Canon digital SLR's -- other than seeing
    superb photos like the one that you posted at
    <http://www.light-to-dark.com/witch10D1.html>.

    I have several Nikon SLR's for day-to-day stuff, and I love the F3 with
    its high-magnification finder for film work, but my D100 is not well
    suited for deep-sky astrophotography.

    Thus I am considering buying a Canon digital SLR to be dedicated solely
    to astrophotography just as you noted above -- a poor man's SBIG, as it
    were.

    Do I understand correctly that you would prefer the Hutech-modified 300
    over the 10D? Would the Hutech 300 be suitable for piggyback
    photography as well as for prime-focus work?

    Thanks for helping the aged and ignorant!

    Davoud... not expecting to achieve California results from Maryland!

    --
    usenet *at* davidillig dawt com

  9. #19
    Stephen Pitt's Avatar
    Stephen Pitt Guest

    Default Witch with the Canon 10D

    "Davoud" <star@sky.net> wrote in message
    news:260120040736512414%star@sky.net





    Hi Davoud. Yes, I'd prefer the modified 300D over the 10D for dedicated
    astrophotography.

    The same technique of stacked short exposures taken thru the telescope
    would apply for piggyback work.

    Best regards,

    Stephen
    ================================================== ========





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  10. #20
    RKroeppler's Avatar
    RKroeppler Guest

    Default Witch with the Canon 10D

    Awesome shot Stephen. Beautiful work. What else can I say? Kudos!

    Scott
    Scottsdale, AZ

 

 
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