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  1. #1
    Jazza11's Avatar
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    Default 4mm Skywatcher plossl eyepiece



    I was thinking about getting another eyepiece for my telescope right now i am mainly interested in planetary viewing i have a 25mm and 10mm skywatcher plossl they are good quality i have only compared them to really bad eyepiece i got with my first scope (they only have about 30mm AFOV) i have been looking at others but i think this 4mm would be great it has 52 AFOV the same as my other 2 they are great but does anyone have experience with a 4mm eyepiece or should i just get another 6mm or mayby a 2X barlow instead of a new EP
    10" SkyWatcher Dobsonian: 25mm And 10mm EP Soon to Be More
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  2. #2
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    ... with a good 2x Barlow that 10mm will work as a 5mm and you get to keep the eye relief of the 10mm ... you'll also get to use it (the Barlow) on that 25mm and have it work as a 12.5mm with the same eye relief staying the same ...

    ... just a thought ...

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  3. #3
    astrobl's Avatar
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    Hi Jazz! I use a 4mm,with a 2x barlow,when viewing the moon,and planets. Not much,eye relief,but the views are nice and 'close'. oh that's on a 8" f4.5.by the way,

  4. #4
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    Default

    I'd recommend a 2x Barlow, too, Jazz. Also consider a TMB Planetary eyepiece (58-degree AFOV and long eye relief). Baader Hyperoin and Orion Stratus eyepieces offer a 68-deg AFOV and 20mm eye relief. They're big and heavy, though. Orion Expanse eyepieces have a 66-deg AFOV and they are small, lightweight, and inexpensive.

  5. #5
    MarkM's Avatar
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    Quote Originally Posted by astrobl View Post
    Hi Jazz! I use a 4mm,with a 2x barlow,when viewing the moon,and planets. Not much,eye relief,but the views are nice and 'close'. oh that's on a 8" f4.5.by the way,
    Hi astrobl,

    Wow, you are able to get 600x with clarity on these targets in your 8 inch--that's remarkable.

    I am assuming you have a ~1200mm focal length scope.
    Location: 30° 19' N; 97° 54' W; elev 248 meters; yellow/green zone; NELM 5.7
    Instruments: Obsession 15" Dob; Orion XT8i; 2" refractor (Galileoscope); Televue EP arsenal; Bushnell 7X50 binos
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  6. #6
    astrobl's Avatar
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    Sorry,my bad! thet woulb be,f/4 at 800mm. Its' an orion skyview 8 eq. "had to get the manual out,couldn.t remember the exact specs. Yea, had some really nice views of mars,when it was close. Wish i had a decent camera,to use with it! Also trying to find a good moon map,the has crater diameters,listed so I can figure out ,how close I am seeing!

 

 

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