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Nebula's Astronomy Den

Discussion in 'Observing Celestial Objects' started by Nebula, Feb 2, 2018.

Nebula's Astronomy Den

Started by Nebula on Feb 2, 2018 at 8:12 PM

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  1. Nebula

    Nebula Well-Known Member

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    Nebula, Sep 10, 2018
    #501
    That's great news, Nebula! You are truly worthy of the name Nebula, :). I struggle with some of the fainter nebulae using my 150mm reflector, but the OIII filter has opened up a whole new world. My favorites within my aperture range, besides M42, include the Ring, Lagoon, Trifid, Omega, and Eagle. I will either need more filters or more aperture to see the really faint nebulae. I'm glad you're able to see so much with your 200mm reflector (and filters)!

    It is great news yes, I am very happy with that new nebula observation. I think i have good eyes but my telescope is well collimated and the optic is clean all the time too. Perhaps there is no link.. but the quality of the sky is not terrible at all, perhaps better then I think.

    When I tried the Veil nebula, I used a sheet of paper to block 1/2 of the front opening of my telescope, it will dim the Veil slightly but it will not disappear, it will remain visible only less bright a bit. I think that would be the equivalent of less then a 6" aperture not a big difference with 8". I am confident I could see they Veil easily with a 6" Newtonian .. but the filter is required in any case.

    This one, very honest deal, high quality, am impressed every time I use that 2" filter.
    http://www.npbfilters.com/specials.html

    My latest nebula success must be a mix of various factors.. but I know the NPB filter weights for a lot on the scale.
     
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  2. Dave In Vermont

    Dave In Vermont Well-Known Member

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    Dave In Vermont, Sep 21, 2018
    #502
    Hey Neb's -

    I'll be trying to get some work done today on reducing the sizes, in "MB's", of the "Lightbulb-Test" series of images I took so I can download them into A-C. If you don't mind - I'll be dropping into your "Nest" if that's alright with you. So expect these to start appearing in here soon.

    See you,

    R & D
     
  3. Dave In Vermont

    Dave In Vermont Well-Known Member

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    Dave In Vermont, Sep 21, 2018
    #503
    Here's a first couple:


    2003 Sirius Mars-Filter a R.JPG


    2003 Sirius Mars-Filter b R.JPG


    Astronomik CLS Filter R.JPG


    Astronomik Hb-Filter R.JPG


    Astronomik OIII Filter R.JPG


    Astronomik UHC-E Filter R.JPG


    B+W FL-D Filter a R.JPG


    B+W FL-D Filter b R.JPG


    My new, improved technique seems to work!

    Yahoo! Enjoy!

    Dave
     
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  4. Dave In Vermont

    Dave In Vermont Well-Known Member

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    Dave In Vermont, Sep 21, 2018
    #504
    Whoops!

    Here's whey are:

    1.2003 Sirius Mars-Filter a R

    2.2003 Sirius Mars-Filter b R

    3.Astronomik CLS Filter R

    4.Astronomik Hb-Filter R

    5.Astronomik OIII Filter R

    6.Astronomik UHC-E Filter R

    7.B+W FL-D Filter a R

    8.B+W FL-D Filter b R
     
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  5. Nebula

    Nebula Well-Known Member

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    Nebula, Sep 21, 2018
    #505
    that's interesting all these tests, it's giving a good idea for each of these filters. The Hbeta for instance wow! surprising, all blue. And the OIII you have blue color, mine is green/red.

    I find this surprising. I remember the Ultrablock was a predominantly blue filter.
     
  6. Dave In Vermont

    Dave In Vermont Well-Known Member

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    Dave In Vermont, Sep 21, 2018
    #506
    The Orion Ultrablock still does! :p



    Orion Ultra-Block (UHC) Filter R.JPG
    Orion Ultra-Block (UHC) Filter R
     
  7. Nebula

    Nebula Well-Known Member

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    Nebula, Sep 22, 2018
    #507
  8. Dave In Vermont

    Dave In Vermont Well-Known Member

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    Dave In Vermont, Sep 22, 2018
    #508
    The different colors would indicate what wavelengths of light spectra (measured in nanometers, or abbreveviated 'nm.') it is rejecting. Seems green in reflected light? It is rejecting the green spectra - around 532nm.

    I suggest looking at, and/or collecting those little bandwidth-graphs. Like this one of a Baader OIII Filter:


    Baader OIII spectra..jpg


    Now look at the Orion OIII Filter ad you posted. The Baader OIII and the Orion OIII look like clones from the graphs. They both have shaving- sharp cut-offs. The Astronomik OIII allows more light pass, and give a brighter image visually. Which I like far better.

    To your question - no, I don't have the Orion OIII. I have the Baader and the Astronomik. That's enough $$$ to spend I think.
     
    Last edited: Sep 23, 2018
  9. Mak the Night

    Mak the Night Well-Known Member

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    Mak the Night, Sep 23, 2018
    #509
  10. Dave In Vermont

    Dave In Vermont Well-Known Member

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    Dave In Vermont, Sep 23, 2018
    #510

    Attached Files:

  11. Mak the Night

    Mak the Night Well-Known Member

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    Mak the Night, Sep 23, 2018
    #511
    Steel Teal sounds like a cool name for a band lol.



    Maybe not ...
     
  12. Dave In Vermont

    Dave In Vermont Well-Known Member

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    Dave In Vermont, Sep 23, 2018
    #512
    Very well, Dr. Quackenbush.....


    Common_Teal_(Anas_crecca)_near_Hodal,_Haryana_W_IMG_6512.jpg
    (*< KWAK!!

    ​
     
  13. Mak the Night

    Mak the Night Well-Known Member

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    Mak the Night, Sep 23, 2018
    #513
    As long as all your ducks are in a row ...
     
  14. Dave In Vermont

    Dave In Vermont Well-Known Member

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    Dave In Vermont, Sep 23, 2018
    #514
    If you read the .pdf article I attached above on 'Teal (color)' - you'd know that the above bird is called a 'Common Teal' rather than a Duck (*< .

    It looks very tasty!
     
  15. Mak the Night

    Mak the Night Well-Known Member

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    Mak the Night, Sep 23, 2018
    #515
    If it walks like a duck, quacks like a duck ... it's probably not an armed bastard ...

     
  16. Nebula

    Nebula Well-Known Member

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    Nebula, Sep 23, 2018
    #516
    The bottom line you nailed it @Dave In Vermont, your motto:

    Experiment, experiment, experiment :D

    I am just back from Cloudynight, reading some threads, you read a thing one day then a couple of months later you read the opposite. :confused:

    After these events, I decided today to ask less and to experiment more.
     
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  17. Dave In Vermont

    Dave In Vermont Well-Known Member

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    Dave In Vermont, Sep 23, 2018
    #517
    CloudyNights:

    Take a pinch of unwavering truth. Add a spoonful of questions and ideas. Pour in a liberal splash of doubts. Shovel in a truck-load of pure, unbridled ego-centric bull-crap. Place the bubbling & fizzing black ooze in an old boot and shake until you feel dizzy. Then run like Hell!

    After it has exploded and the noxious, poisonous gases emitted have cleared - find another place to hang out! :eek: :p
     
  18. Nebula

    Nebula Well-Known Member

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    Nebula, Sep 23, 2018
    #518
    lol, it's probably just temporary until it's over. I take what I can until it's over.
     
  19. Dave In Vermont

    Dave In Vermont Well-Known Member

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    Dave In Vermont, Sep 23, 2018
    #519
    Yep - me too.

    I drop in to cherry-pick an article or four from time-to-time while avoiding anyone with two-legs and upright bipedal motion. Download and skedaddle - without being detected by any carboniferous O2 - breathers. I rarely have need to even login the CN-website.

    R & D
     
  20. Dave In Vermont

    Dave In Vermont Well-Known Member

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    Dave In Vermont, Sep 25, 2018
    #520
    Baader Contrast-Booster Filter R.JPG
    Baader Contrast-Booster Filter R



    Baader Fringe-Killer Filter R.JPG
    Baader Fringe-Killer Filter R



    BAADER H-alpha 35nm R.JPG
    BAADER H-alpha 35nm R



    Baader IR Filter R.JPG
    Baader IR Filter R




    Baader Moon & Skyglow Neodymium Filter R.JPG
    Baader Moon & Skyglow Neodymium Filter R




    Baader OIII Filter R.JPG
    Baader OIII Filter R




    Baader Semi-APO Filter R.JPG
    Baader Semi-APO Filter R




    BAADER SOLAR-CONTINUUM FILTER R.JPG
    BAADER SOLAR-CONTINUUM FILTER R




    Brandon #30 Magenta Filter a R.JPG
    Brandon #30 Magenta Filter a R

    ​
    And this concludes the installment-du-jour. I hope they meet with your satisfaction, Nebs!

    :eek: :cool:




    ​
     
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