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Posts posted by clarkpm4242

  1. Just the type of session I love!

    Remember targets in Ophiuchus and Serpens, then all the way along the Milky Way.  Putting effort into the dark nebulae will reap rewards on the bright objects.

    Not sure about OIII though.  UHC may give a more pleasing view if you have the option.

    Nice to plan ahead.



    • Like 2

  2. 7 minutes ago, Ships and Stars said:

    Here's La Palma, Canary Islands for comparison on the rain

    Yes.  I've been to La Palma a dozen or so times...though half were primarily for mountain biking.  The observatories above the inversion layer will have  a vastly different profile.  The NE of La Palma is a rainforest!

    I think a key factor is the consistent seeing i.e. laminar airflow from the NE Trade winds that the pro astronomers require for their work.  I expect that Cape Verde would be fantastic for ourselves.  La Palma is also feeling the encroachment of light pollution  :( 

    Hope you can post pics from your future visit!



  3. Display kicked off about midnight.  Best for me about 01:30.  A couple of quick edits.

    Single exposure Canon 6D MkII  Sigma 24mm @f 2.8  iso 400 3.2s

    Time lapse  Canon 7D MkII 200mm Canon  @f4 2s iso 400

    Locations - Tan Hill and Swaledale.  A bit short on foregrounds but gave a visually bright display in wonderful isolated location.   BEAUTIFUL!


    Media 01.jpg

    • Like 5

  4. 2 hours ago, davew said:

    What does it sit in front of in the presentation ?

    Hi Dave

    The current format takes the audience through what can be seen through the 4 seasons.  Brief explanation as to why this changes, earth's orbit, location in Milky Way...

    I use a combination of stills and time lapse many with reference points to the northern Yorkshire Dales where I live.   Also a dark skies and light pollution pitch.

    This is after a wider field vid showing the onset of darkness and stars coming out over our village (though it needs a better version).  I then go onto the seasons finishing with the current at the date of the talk.



    • Like 1

  5. 4 hours ago, SIDO said:

    So might we not see rotation in the CMB just because we are looking at an ultra tiny section of the Universe and to see it might need measurement on larger distance scales which can't be done because we only can measure what can be seen?


    I'll have to find another cause for my dizziness...



    • Haha 1

  6. 8 minutes ago, andrew s said:

    But Feynman diagrams are a way of doing an approximate calculations in QED each diagram corresponds to a term in a perturbative expansion. They are not real observable entities just a very clever way of doing the maths and keeping track of the terms.

    Yes, they do demonstrate the mental gymnastics that are gone through to achieve a workable model e.g. speed of light being an average...

    ...I occasionally have fleeting moments of understanding, then seems irretrievable.

  7. On 10/03/2019 at 20:28, estwing said:

    I have strong opinions on this.

    (edit - have belatedly noticed the new guidance above.  Clear identification, upfront).

    I wonder if I have similar.

    NV is obviously a valid tool however, I would like it to be obviously differentiated from normal observing.

    Ideally a separate section however, as long the title of all NV posts begins with for example 'Night Vision report -' it would enable readers to delve in or immediately pass it by.  No confusion.

    Have fun!



    • Like 5
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