Astronomy Site: Meade Advanced Products Users Group Archive: Re: [M]: Fous- Focus-Focus


 

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Subject: Re: [M]: Fous- Focus-Focus
From: John Mahony
Reply To: mapug@shore.net
Date: Sun Aug 31 04:00:42 2003

While you're here, how about checking out the Astronomy Book List ?

Are you comparing the two at similar magnification? That makes a big
difference in the apparent quality of the view. Higher power will look
blurrier with lower contrast. For a given EP, the f/10 LX200 will give
twice the magnification (or more if it's larger than 8") than your f/5 Newt.
Stick a 2X barlow in your Newt and then use the same EP on both for
comparison.
-John


>
>Hey Guys,
>
>So, went out last night, and although better, it was pretty disappointing.
>Now I have my 8" Newt and the LX200 side by side on the hill and, althout
>the LX200 is "pretty much" focusing, there is just no comparison. All I
>can think of is that I am still not collimated and I just don't know how to
>get it better. Flaming is still quite noticeable in the LX200 and non
>existent in the Konus and now they are in the same spot.
>
>I'd think that flaming gets accentuated if the scope is not collimated?
>
>I can take a shot of M15 with pinpoint stars on my newt and it is just
>fuzzy on the LX200, no matter how much I play with the focus. I kept
>making myself feel better by looking at galaxies and saying "that doesn't
>look that bad!".
>
>Then I went to the Saturn Nebula, and I COULD NOT get it to be anything but
>a fuzzy blob.
>
>So, bottomline, I am going to continue to work on it. However, if anyone
>lives in the Seattle area and would be so kind to come over to see it in
>person, I'd be forever in your debt. I'm not sure what else to do, except
>keep turning those allen screws back and forth and hope for a better image.
>
>Thanks for all your help and I hope I'll get this fixed eventually. If any
>of you out there can ever come by because you're local, here's my number
>206-852-9436.
>
>Christian.
>

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