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Thread: Beginner in need of some guidance

  1. #11
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    Default Re: Beginner in need of some guidance



    Hi Mike,

    Thanks for you for your advices! Yes, it's very possible that I'm trying to do too much at once. Last night I only used my scope, without any software. It worked great so I don't feel the need to use a software right now.

    I already have an AC adapter (I would like a battery pack as well) and a dew shield. I did not purchased filters yet. Would you recommend any lunar ones? Yes, Bob's knobs will be on my list as well. For the software, the ones included with the scope are for Windows only and I'm on a Mac. That's why SkySafari seemed like a good option, or Stellarium.

    Yes, the Barlow 2x is quite disappointing so far. Might be useful for the moon but I doubt it will be much help for anything else. Would you recommend getting a 7mm or even higher magnitude EP to use without a Barlow? I'm pretty sure my scope can go to 300x, so 5mm. 7mm might be a safer bet... but, is 7mm better than my 12mm + Barlow 2x? I guess it's less glass between the sky and your eyes.

    I will definitely be interesting in doing some astrophotography at some point. That's actually my mid/long-term goal. I am aware that a 6SE is not ideal for that, but it's my first scope and I'm fine with that. I own a Canon 60D that I could potentially use for astrophotography but I feel like a good CCD might perform better with my scope/mount. The weight difference would be significant. It's not something I would consider investing in this year but definitely next year. I want to get better at viewing the sky before I even consider taking pictures of it.

    Would you recommend a 6.3 reducer for viewing the sky or is it really more for photography?

    Thanks again for your help!

  2. #12
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    A 6.3 reducer definitely aides in viewing DSO as it widens the FOV & lets more light enter the scope. For lunar/planet viewing, I'd recommend not using a reducer as such objects (Mars, Jupiter, Saturn) are VERY bright- so all a reducer will do here is pretty much reduce your magnification (just my opinion).

    Don't get hung up on magnification... Regardless of 'max magnification,' you will be limited by the exit pupil... Exit pupil can be calculated as follows:

    eyepiece focal length/scope focal ratio

    For instance: your 25mm EP gives you 60x magnification at F10 (factory focal ratio) with an exit pupil of 2.5mm (25mm/10). The large exit pupil is why you see everything so brightly... Once exit pupil starts getting below 1mm, it becomes increasingly hard to focus on your target... Much of the time impossible. Therefore I do not recommend going any lower than 8-9mm on your EPs. Your 9mm gives about 167x magnification with focus achieved fairly easy in mediocre seeing... And SOMETIMES seeing will be so crappy that only your 25 & 32 will provide decent views.

    With 9mm EP, your exit pupil is 0.9mm at F10. Add a 6.3 reducer, and your magnification will drop to about 105x... But the exit pupil will be 1.4-1.5mm; making for a very bright, comfortable & clear view with a wider FOV when looking at DSO or trying to push magnification in less than ideal conditions. I tried 4 & 7mm EP's at both F10 and F6.3... Ended up returning both as the views were dim and next to impossible to focus.

    To this day, my highest magnification EP is the 9mm.

  3. #13
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    With the 6SE & Alt AZ mount, you can get some pretty stunning lunar & planet shots with a fairly cheap webcam or solar system imager. I use the NexImage 5 and love it... But I think Orion has one for about $100. I only do CCD stuff so I cannot comment on whether or not your 60D is up to the task... With a DSLR on Alt Az mount, you can still get some pretty amazing DSO pix with <30sec exposures... Ask around the imaging forums whenever you've hot some money to blow.
    Highly recommend a lunar filter- Orion variable polarization is best... I have a crappy green none that I keep forgetting to send to a guy here for free.

    Keep it simple- tried & true advice... With nothing more than a dew shield & power tank, you'll be set to take that scope nearly anywhere~

  4. #14
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    Btw I stress I'm not nearly 'smart' on all of this so please listen to others' advice as well.

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    Default Re: Beginner in need of some guidance

    Quote Originally Posted by chartram View Post
    A 6.3 reducer definitely aides in viewing DSO as it widens the FOV & lets more light enter the scope.
    Actually a focal reducer doesn't let more light into the telescope. That is determined by the telescopes aperture. It does brighten the field though as the angle the light takes in the telescope is dramatically increased and makes the center of the field much brighter. In eyepieces this feature is really nice, because you don't notice the vignetting at the edges. Just the bright beauty in the center. The Double Cluster with a focal reducer and a 32mm eyepiece = wow

    Best regards.
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    Default Re: Beginner in need of some guidance

    Awesome. I will definitely purchase a focal reducer this week. I'll probably return my barlow 2x at the same time since, well, I'm starting to think it doesn't even work properly. I'll test it during daytime to see if I can see clearly through it. Do you guys have a specific focal reducer to recommend?

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    Default Re: Beginner in need of some guidance

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    Default Re: Beginner in need of some guidance

    You can collimate inside the house pointed at a wall with a laser collimating tool. This forum will get you up and running in no time, just take some advice and research your options. Your life is about to really get exciting.
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    Default Re: Beginner in need of some guidance

    Quote Originally Posted by stepping beyond View Post
    You can collimate inside the house pointed at a wall with a laser collimating tool. This forum will get you up and running in no time, just take some advice and research your options. Your life is about to really get exciting.
    I was told that I couldn't use a laser collimating tool with my scope (Celestron Nexstar 6SE). Is it true?

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    Default Re: Beginner in need of some guidance


 

 
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