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knobby

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Posts posted by knobby

  1. 1 hour ago, stafford_stargazer said:

    Hi mate 

    Yes at home but also take on holidays too. I don't want a dob, just sold a 200mm dobsonian 2 days ago as I need something I can quickly pick up and get outside .

    Can you answer my question about matsukovs then, I thought they were good planetary scopes is this true then or they not that good?

    Thanks Gary 

    They're nice little scopes, come up on ABS quite often https://www.astrobuysell.com/uk/propview.php?view=196163

    But you'll still end up needing a mount, that's going to add weight !

    AZ-Gtis are nice and compact ?

     

    Whats your budget ?

    • Like 1
  2. 3 hours ago, StuartT said:

    I don't use a guide scope. My understanding was that with an OAG you should use the FL of the imaging scope, no?

    I always use the new profile wizard to make a profile. And did so in this case too - it's captured the various details (e.g. pixel size of the guide cam) correctly, so if a step size of 1050ms is indeed wrong  (as others have pointed out) then I am puzzled. I've not changed any settings  

    PHD2 makes assumptions about your equipment, usually correct but not always due to manufacturing variances.

    And yes, you use the main scope length if using an oag.

    • Thanks 1
  3. 2 hours ago, 900SL said:

    I assume it is internally focused, so no tilt. The tube remains fixed?

    Actually, you're probably right, looking at It on a PC  rather than a phone It looks like It has a very long focuser tube inside the ota. So in fact quite the opposite, It's very sturdy ?

  4. That's an interesting camera, had to google it ... It syas It's like a OSC and Mono all in one.

    The bayer matrix is apparently transparent to light over 850nm so in theory, for your sensor anyway, it shouldn't effect resolution.

    As you've realised, using the IR pass will cut down on the  amount of light hitting the sensor therefore needing longer exposure times.

    How are you capturing ? your images look very nice on Flickr, maybe the Lunar pics could take more sharpening ?

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