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Thread: Difficult M33?

  1. #21
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    Default Re: Difficult M33?



    I just observed it last night from my Bortle 5 back yard with the Z10. Personally as far as filters go, I prefer the UHC with M33 because as JG stated, the O-III is much more aggressive, and thus will dim the arm structure in M33 more. I just find the view more pleasing with the UHC in this particular case. Here is what I wrote in my report, posted in my thread in the Reports Forum. :

    "Spotting Triangulum, I headed to 3rd magnitude Metallah (Alpha Trianguli), then slid about 4.25 degrees to the west-northwest and saw M33 ease into the FOV. At 69x, it was a fairly bright and large rounded diaphanous glow, with a brighter core. Viewed at 89x, the brightness of the halo increased, as did the core. I tried using the UHC filter and noticed some brightening in the galaxy’s halo, indicative of the H-II star forming regions in the arms."
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  3. #22
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    Default Re: Difficult M33?

    I got the Pinwheel blues. I spent probably about 3 hours over 2 sessions this past weekend searching for M33. Nothing. I was going to post asking for tips but found all I need in this thread. I'll give it another try in a month or 2 but here in what is probably about Bortle 7 skies I'm not holding my breath.
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    Default Re: Difficult M33?

    I'm really pleased I started this thread.

    What a wealth of knowledge and experience it has uncovered. For me, this is exactly what Astronomy Forum does best.

    Thanks to everyone who has contributed.

    Alec.
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  5. #24
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    Default Re: Difficult M33?

    I have 65 observations of the M33 recorded in my logbook since 2002. Most of the observations have been made with the 25x100 and later with the 15x85 binoculars, the smallest binoculars used have been the 7x42. The NE spiral arm and the NGC 604 have been fixed on some very good nights through the 25x100, especially through the CLS filter and through the blue(RGB) CCD filter. The spiral arms and the NGC 604 has been much better through the 6" refractor.

    Regarding the deatiled observations, the best way is to do the sketching. Make a template with the 4 front stars making a parallelogramin which the M33 is located. In the next step, put down the bright foreground stars, they are helpful for the navigation towards the spiral arms. Finally, use different filters to extract different features in the galaxy. Last but not least, take the eyepieces yielding the exit pupil between 2.5mm down to about 1.5mm. Somewhere in this range will be your sweet EP, showing the most details.

    Happy hunting,

    JG
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    Default Re: Difficult M33?

    That's a fine piece of observing Alan.

    I'm going to 'fess up here, I used to have terrible trouble with this galaxy, to such an extent that it became known as "Stevie's nemesis" in our club. But I eventually got it, and have enjoyed it many times since.

    The title of Stevie's nemesis has now passed to IC342 (Caldwell 5) in Camelopardalis. I have never been able to find this bl**dy galaxy. I've seen it in other's scopes, but can I find it? One of these days.
    Stevie


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    Default Re: Difficult M33?

    Quote Originally Posted by Skyscanner View Post
    I think I really need to wait a couple of months for it to be higher in the sky and then observe from my "dark site"
    GOT IT!!!!

    Instead of waitng a few months you might as well stay up late
    First seen with 8 x 56 docter optic nobilem bino from my front door step.
    Past midnight on a nice transparent night with some thin cloud veils here and there.

    A pretty large patch of faint haze with no distinct core.
    I revisited it several times during the session to make sure it was not a dot of cloud
    But sure enough, it did not move.
    At times it seemed there was an area at the right side which was less bright.

    My starhop: just "mirror" the position of M32 off Mirach. In Bino's you should already see it although it is just slightly to the left.
    In my 8x56 it *just* does not share the fov with Mirach.

    I also checked it out with the 100mm skyscanner at 20x but did not see more detail.
    I did not even try to increase magnification as it was so faint.
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  9. #27
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    Default Re: Difficult M33?

    Quote Originally Posted by j.gardavsky View Post
    Most of the observations have been made with the 25x100 and later with the 15x85 binoculars, the smallest binoculars used have been the 7x42.

    JG
    Well JG, I managed at last to see M33 using our 510mm telescope at the observatory using a 17mm Ethos eyepiece. Shortly after we closed the dome for the night I searched again casually with 10 x 50 binoculars and found it quickly! It was feint but is also quite large. The viewing conditions were very favourable.
    Thanks for your earlier comments in this thread about binoculars.

    Alec.
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