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-Amenophis-

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Posts posted by -Amenophis-

  2. When to Re-Coat Mirrors?

    in ASA N-SERIES & ASA H-SERIES

    Posted

    Be careful because I also wanted to re-coat my mirror because the quality was not there (for the price of the telescope I am a little disgusted with the policy of the ASA company).

    In short, I end up with a mirror from orionoptics with an aluminide sieve ...

    The companies contacted to re-coat the mirror all refused.
    The primary mirror being stuck on the barrel, the companies refuse to take charge of it (personal experience).

  4. AAF3 with heavy load (G4-16000)

    in ASA Focuser

    Posted

    Last question Mark, 

    Do you take 57.29mm as a backfocus for the Wynne corrector?

    By analyzing my images, I get 24% curvature on my images.
    It seems strange to me since I calculated everything to the nearest millimeter.

    BF Canon Ra = 20mm

    BF Adaptator = 29mm

    BF T-RING = 8,3mm 

    TOTAL = 57,3mm

  6. AAF3 with heavy load (G4-16000)

    in ASA Focuser

    Posted

    Hello, Mark.

    Thanks a lot for your answer. 😉


    These are the old G4 cameras so no built-in tilt adjustment. I use the optical divider from SKYMECA which manufactures this very simple and formidable system.

    For OTA alignment and collimation, I use the CATSEYE system which works very well and gives me satisfaction. Hope this can correct / minimize all these issues.

    Anyway, if the focuser didn't give me satisfaction, I changed everything for the OPTEC Leo system.

    I hope that with the CATSEYE everything will go well and that I will not go into interminable adjustments ..... That's what scares me.

  7. AAF3 with heavy load (G4-16000)

    in ASA Focuser

    Posted

    Hello,

    I would like to acquire a MORAVIAN G4-16000 camera with external filter wheel and ASA3 "corrector for my Newton ASA telescope.

    My focuser is an AAF3.
    I would like to know if a person has this camera and this eyepiece holder in order to know if it is well supported.

    I previously had a lighter camera, the G2-4000, and had a lot of tilt that was difficult to correct.

    Before buying the G4, I would prefer to inquire.

    Thank you very much for your help.

  9. ASCOM software AAF3 installation

    in ASA Focuser

    Posted


    hello everyone,

    after installing the ASCOM platformform6.4 driver and the software in the "support" section, I cannot bring up the ASCOM driver from the focuser.

    It is therefore impossible to use FocusMax for example.

    Did I forget something?

    Thank you in advance for your help.

    Sans titre-1.jpg

    Sans titre-2.jpg

  13. Bubble nebula and friends

    in Deepsky

    Posted

    Hello,
     
    After a lot of disappointment with the ASA company and my Newtonien telescope, I present you a large field around the nebula of the bubble comprising:
    - an open cluster of stars (M52-NGC 7654: distant about 5000 light years)
    - nebula I present you a large field around the nebula of the bubble comprising:
    - an open cluster of stars (M52-NGC 7654: distant about 5000 light years)
    - nebula NGC 7538 (active star formation region)
    - the bubble nebula (bubble created by the stellar wind of a star), which is about 10 light years in diameter and continues to grow, for comparison the diameter of the heliosphere, the sphere of influence of the Sun, would be close to 35 light-hours only.)
     
    ASA10" Newtonien
    Canon 6D Astrodon
    Paramount MyT
    186x300s at 400ISO (02 and 03DEC2019)
    Total exposure : 15hrs

     

     

    post-6737-0-63684400-1576092634_thumb.jpg

  17. Poor quality / Problem with ASA Telescope !!

    in ASA N-SERIES & ASA H-SERIES

    Posted

    Yes you are right. But what about quality controls ?

     

    For the reputation of such a brand, it is necessary to pay attention to the subcontractors.

     

    I had mediocre mirrors (Chinese) and high quality (skyvision) and despite the years, the mirrors were still good.

     

     

     

    I made a 6" mirror in 1985 and the coating still looks excellent. The coating was done by David Hinds in the UK. 

     

    This is really good work.

  18. Poor quality / Problem with ASA Telescope !!

    in ASA N-SERIES & ASA H-SERIES

    Posted

    Hello everybody,

     

    Here is my mishap with ASA  :angry:
     
    During 2017, I decided to break the piggy bank to offer me an ASA telescope. :wub:
     
    I wanted to take a well known name and quality recognized around the world.
     
     
    In November 2017, reception of the telescope. Tracking the order, transportation everything
    is perfect.
    When unpacking, comes my first complaint  :wacko:
     
    1°) The carbon tube of the telescope has many cavities on its surface!
     
    KEfDNLZ.jpg
     
    fIahheF.jpg
     

    After claim, ASA decides to refund me 200 €.
    I agree with their proposal and I accept.
     

    Subsequently, a message on my mailbox arrives in March 2018 telling me that a new corrector 3 '' has
    just been sent to me. Second problem !  :o
     
    2°) “We will send you a corrector replacement due to missing multi coating on the one you originally
    received.”
     
    RVk48MP.jpg
     
    On this point, it's very professional. Nothing to say but it's two problems a few months apart.
     
    3°) Then in April 2018, I contact ASA again for a problem regarding my secondary mirror.
     
    This one has some kind of spots all around the mirror.
     
    5w90fvE.jpg
     

    According to Wolfgang PROMPER, it seems that black paint is involved in this phenomenon.
    He decides to send me a new medium with a new secondary mirror.
     
    Once again, the problem is well managed by the ASA team but it starts to do a lot!

     

    And it's not over !

     

    4°) Now it is the primary mirror to have a problem.

     

    After more than a year of use, I wanted to disassemble the telescope for a complete cleaning (see my discussion on this forum http://forum.astrosysteme.com/index.php?/topic/1035-cleaning-primary-mirror/).
     
    To my surprise, I discovered a primary mirror completely stitched. That is, the aluminide has not been
    done properly.
     
    We even distinguish, on the edge of the mirror, aluminide in the process of leaving.  :angry:  :angry:  :angry:  :angry:
     
    Uruw9p9.jpg
     
    dV0KiBE.jpg
     
    ExD3Cc2.jpg
     

    I am very disappointed with all these problems with the ASA hardware.
     
    At the price where it matters and according to their reputation, I expected much better from them.
     
    To summarize :
    - the carbon tube of the telescope is smashed
    - the 3 '' corrector changed
    - the secondary mirror also changed
    - the primary mirror completely stitched
     
    To summarize the whole telescope is bad.

     

     

    So I contacted the support so he could do some things.
    After asking the place of storage, which for my part is not the question to ask! :huh:
     
    After a little more than a year of use, it is not normal to obtain this result on a so-called quality mirror!
    And the answer?
     
    Not before June 20 !!!!  :(
    In short, I saturate because to shell 8000 € and get this material .....
     
    I started contacting Skyvision and AiryLab.
    If the ASA team does not bring me satisfaction in managing this big problem, I'm counting on:
     
      - To ask for tests of conformity of the mirror afion to check the specifications and the quality of mirror (except problem mentioned of course) by the French companies.
      - Disseminate information on different forums (astrobin, APOD, Sky & Telescope, AstronomyMag etc.).
      - Go further if necessary.
     
    Hoping that all my problems are resolved.

  19. Cleaning primary mirror

    in ASA N-SERIES & ASA H-SERIES

    Posted

    Merci beaucoup pour ton message et tuto très détaillé. C'est sympa :) 

     

    Dernières questions : 

     

     - l'alcool isopropyl tu l'utilise à la fin en pulvérisant sur les lingettes ? 

     - L'autocollant pour la collimation au centre du miroir reste collé après toutes ces étapes ? 

     

    ---------------------------------------

     

    Thank you very much. 

     

    Last questions:
     
      - isopropyl alcohol you use it at the end by spraying on the wipes?
     
      - The sticker for collimation in the center of the mirror remains stuck after all these steps?

  23. Mirror cell handles

    in ASA Correctors & Accessories

    Posted

    Hello,

     

    After 2 years of use my ASA10 telescope is good for a great cleaning (The countryside brings a lot of dust, pollen. I have a hell of a lot.)

    I will do this in the summer to minimize the waste of time.

     

    While browsing the documents, it is mentioned to remove the primary mirror from the telescope to use special screws.

    Mirror cell handles.

     

    VnSelYd.jpg

     

    I do not remember seeing these screws during my purchase and I would like to know if it was possible to use something else?

     

    Thank you in advance for your return.

     

    Thomas

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