...trimmed and thinnned just a tad...
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Originally Posted by Lomitus
...I did noticed that the eye piece on the 25mm lens has a larger opening (the part I look thru) on it then the one on my 9mm, which is quite small. Now, if I were to say use an 18mm lens with a 2x Barlow...assuming that the 18mm lens had a larger opening in it then my 9mm, but perhaps not quite as large as the 25mm...this would give me the same magnification as just using the 9mm, except that using the 18mm/Barlow would simply be easier to look thru...is this what we're talkin about here? I realize that using the Barlow puts the "extra lens in the light path cutting down a little on the amount of light that gets thru"...not worried about that at the moment as again this is for reference sake...just tryin to understand eye relief.
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Keeping aurora's comments on eye relief in mind, you also have the correct idea.
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Originally Posted by Lomitus
Thanks for the link to the Orion site...looks like some good info that I'll go thru over the course of the afternoon. The term "plossl" seems to be directly in reference to the eye relief thing...
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Nope. 'Plossl' strictly refers to eyepiece construction. The eye relief varies as to how the lenses are ground, not how they're assembled.
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Originally Posted by Lomitus
If you have Adobe Acrobat on your PC, here's the link to the owners manual... http://www.meade.com/manuals/ and its the DS 2000 series. Take a look at page 6...while this picture isn't actually -my- scope, the viewfinder is identical and should give you a better idea of what I'm talkin about. You'll also see on page 13 that the instructions for aligning the viewfinder are pretty useless if theres a problem! |
Okay...I"m starting to get an idea here. One set of screws moves one end of the scope left/right, the other set moves
the other end of the scope up/down. Also, you have to UNscrew one of the screws a certain amount before screwing IN the other one the same amount.
Unscrew the top screw almost all the way, and just use the bottom one to get the up/down set correctly. Then screw the top one back in to hold it in place. Then, unscrew one of the left/right screws, and dink with the other one to get the left/right correct -- this one will definitely take some interaction between both left/right screws to line that part up. Before you start, loosen all the screws and make sure your crosshair is properly oriented. In theory, this ought to get you where you need...
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Originally Posted by Lomitus
Being that I do some photography work, I do have a nice pack of lens papers...will this be suitable for cleaning the lenses on the scope or should I be looking for something more specific (soft lint free cloth)?
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Just be gentle, and that ought to work just fine.
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Originally Posted by Lomitus
BTW..Charlie, where abouts in the Dayton area are you? It's been quite a while since I've been down there, but I used to have some friends (years ago) down in Kettering so I do know the area a little...just curious.
Bright Blessings,
Jim
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Southeast side, about two miles north of the Kettering line, just off the Wayne/Wilmington/Stewart intersection...
Good luck. Now, go get some stardust in your eyes.