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johninderby

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Posts posted by johninderby

  1. Nice teport. 👍🏻

    Pity the weather last night wasn’t good where I am. So much haze couldn’t even see Mars at all. 🤬 Hopefully will be better tonight. 🙏🏼

    But despite the weather the moon was impressive particularly with the Vixen HR 3.4mm eyepiece. 

    Was reading a German report on the scope that pointed out one interesting characteristic. Apparently these doublet optics are designed to optimise the green and blue wavelengths rather than the red as the eye is least sensative to red. However this can cause minor red fringing on bright stars and reduce contrast on Mars. Testing showed that by using a prism diagonal (Baader T2) which refracts red differently to blue and green it can cancel out the differences and get rid of any red fringing and increase contrast on Mars. Apparently the light path length of the prisim is important. Not sure how noticeable this would be in the real world but interesting nonetheless. Will have to compare views of Mars with a prism diagonal and mirror diagonal to see if there is any noticeable difference. 🤔.

    • Like 2
  2. So much for the clear skies. Lots of cloud around earlier but now just very hazy so not much to look at except for the moon. Had chance to try a variety of eyepiecehs and a Baader prism and a WO diagonal. Seemed to be a tie between the diagonals. 

    However views of the moon were very impressive. Very sharp and contrasty images and showed a lot of detail. Tried the Vixen HR 3.4 and and very impressed. Definitely the most detail and contrast compared to the other eyepieces thatI tried. Think I could do with the 2.4 HR. 😁

    With the 3.4 floaters were a slight problem but not a big deal.

    Early days yet but very impressed with the scope. Not the slightest trace of CA which is what I expected though.

     

    • Like 7
    • Thanks 1
  3. First light 🥳🥳🥳

    Put in the Lacerta wedge for a bit of solar white light observing. Best white light solar views I’ve ever had. WOW !!!!!!

    Can’t believe how sharp  and clear the views were of the sunspot group. And it reached focus without having to remove the focuser extension. The old A&E solar shield did it’s job. Also impressed with how well the Svbony 10 - 30 zoom worked. Surprisingly good. 

    Gone a bit cloudy now.😢

    4A7DA774-BD8D-40F2-AA20-30AAE181329C.jpeg

    • Like 7
  4. 7 minutes ago, alex_stars said:

    Very nice pictures of your new scope @johninderby I love the quality stickers of Tecnosky. Do let us know if the collimation is "ok" 😀

    Fingers crossed for your first light tonight.

    Mine for TS is in the delivery truck right now and should be with me within hours. Guess that makes the two of us tonight starring through such a nice scope!

    WEATHER.png.5d7c35abc4c18a0da244cb722cd885f8.png

    If you don't mind then I will post some pics of the TS version here as well.

    Yes that’s fine. Want this thread to be about the 125 in particular whatever the brand name. 

    The Tecnosky is bench tested by Tecnosky before shipping then Astrograph here in the UK checks it again and makes sure the collimation is perfect.

    • Like 1
  5. 7 minutes ago, nfotis said:

    If I am not mistaken, you fitted a 1.25" Lacerta wedge? How much backfocus does it consume?

    N.F.

    No it’s a 2” Lacerta wedge. Lack of infocus travel can be a problem with some scopes with a 2” wedge but as the focuser has a 60mm long extension that can be removed if you need more infocus travel. will be no problem with this scope. Intended mainly for use with binoviewers with this scope.

    • Like 1
  6. 10 minutes ago, paulastro said:

    I wouldn't let Acrab67s comments spoil your enjoyment of purchasing your new scope John - it would be a shame.  

    I predict that either on Thursday or Friday (depending on when you have first light), you will be one happy owner.

    My 102ED version is a fine scope, and I'm sure yours will be the same.

     

     

    Yes I am indeed looking forward to trying the new scope out.

    Gave razor sharp views of lamposts this afternoon while aligning the finder. 😁

    Not too heavy either. Easy to fit to the AZ100 and after playing about with positioning now balances perfectly at any angle. 👍🏻

    • Like 4
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