Page 1 of 2 12 LastLast
Results 1 to 10 of 13
Like Tree30Likes

Thread: 12 Inch Dob - Are these the right eyepieces?

  1. #1
    TheNewGuyHere's Avatar
    TheNewGuyHere is offline Main Sequence
    Points: 1,557, Level: 23
    Level completed: 57%, Points required for next Level: 43
    Overall activity: 0%
    Achievements:
    2 Posts Achievement5 Threads Achievement!20 Posts Achievement!50 Posts Achievement!First 1000 Experience Points
    Join Date
    May 2016
    Location
    Chicago
    Posts
    52
    Points
    1,557
    Level
    23
    Thanks
    6
    Thanked 1 Time in 1 Post

    Default 12 Inch Dob - Are these the right eyepieces?



    Hi everyone - just running my ideas past you. Currently I only have a 12 inch dob and an es 82 degree 14mm and an es 2 inch 2x barlow. I am thinking about adding these:

    ES 2 inch 82 30mm
    ES 2 inch 82 18mm
    ES 1.25 82 8.8mm

    The 18 ad the 8.8 kind of overlap with the barlow. Would it be better to replace the 8.8 with a 4.7 or 11? I also plan on using these for light visual on a 80mm triplet that I don't own yet

    Thanks!!!

    TheNewGuyHere

  2. #2
    bladekeeper's Avatar
    bladekeeper is offline Super Moderator
    Points: 303,531, Level: 100
    Level completed: 0%, Points required for next Level: 0
    Overall activity: 100.0%
    Achievements:
    2 Posts Achievement20 Posts Achievement!5 Threads Achievement!50 Posts Achievement!200+ Posts Achievement!
    Awards:
    Activity Award
    Join Date
    Aug 2014
    Location
    Lowell, Arkansas, USA
    Posts
    38,871
    Points
    303,531
    Level
    100
    Thanks
    29,120
    Thanked 17,666x 12,097 Posts

    Default Re: 12 Inch Dob - Are these the right eyepieces?

    Hi NewGuy!

    The 18mm is an excellent choice, a favorite of mine in my 12".

    Depending on your age, you might consider replacing the 30mm with the 24mm due to exit pupil size (5.92mm). If you are middle aged or older, you might lose a little light with the 30mm if your pupils do not dilate as wide as they did when you were younger. The 24mm is also an excellent eyepiece, and provides outstanding views.

    The 8.8mm is a good one too, and provides fine viewing of planets, and even serves well on very faint galaxies.

    Since you already have the 14mm, and since the 18mm with barlow would overlap the 8.8mm, I urge you to consider the 11mm. The 11mm is another strong member of the series. If I could only have two, it would be the 18mm and the 11mm. This pair is my favorite galaxy hunting combo.

    Just my 2 cents. Best of luck on your choices.
    dhines32, Lowjiber, Raihan and 2 others like this.
    Bryan

    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.
    :
    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.

    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.
    f/5; Celestron C6-R f/8; ES AR127 f/6.4; ES AR127 f/9.4; Stellarvue SV102T f/7; ES AR102 f/9.8;
    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.
    MC90 f/13.3;
    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.
    ST80A f/5; Celestron Premium 80 f/11.4; Celestron C80 f/11.4; Unitron Model 142 f/16; Meade NG60 f/10
    Mounts: Celestron AVX; Bresser EXOS-2; ES Twilight I; ES Twilight II; iOptron Cube-G; AZ3/wood tripod; Vixen
    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.

    Eyepieces: GSO Super Plössl 40mm, 32mm, 15mm, 9mm; ES 82° Series; GSO Superview 30mm; Celestron Plössl 26mm, 20mm; ES 70° 25mm; ES Plössl 25mm; Vite Aspheric 23mm, 10mm, 4mm; Orion Expanse 20mm, 9mm; KK Ortho 18mm, 12.5mm; Bresser 70° 15mm; Coulter Optical 12.5mm; BCO 10mm; ES 62° 9mm; Zhumell Z Series 5mm
    Binoculars: Pentax PCF WP II 10×50, Bresser Corvette 10×50, Bresser Hunter 16×50 and 8×40, Garrett
    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.
    12×60 LW, Gordon 10×50, Apogee 20×100

    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.


    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.

    Galaxy Hunter's Creed - When you play whack-a-mole, sometimes you hit 'em on the head, sometimes you miss 'em. But its always fun to play, and if you don't play, you ain't gettin no moles! - KT4HX

  3. #3
    Lowjiber's Avatar
    Lowjiber is offline Urban Astronomer
    Points: 211,530, Level: 100
    Level completed: 0%, Points required for next Level: 0
    Overall activity: 0%
    Achievements:
    2 Posts Achievement20 Posts Achievement!50 Posts Achievement!5 Threads Achievement!200+ Posts Achievement!
    Awards:
    Highest Experience Award
    Join Date
    Jun 2013
    Location
    Las Vegas, Nv, about two miles south of the "strip".
    Posts
    12,251
    Points
    211,530
    Level
    100
    Thanks
    4,205
    Thanked 4,522x 3,540 Posts
    Blog Entries
    6

    Default Re: 12 Inch Dob - Are these the right eyepieces?

    I'll double-down on Bryan's suggestions above.

    The 18mm is an awesome EP, and the 11mm will "fit" nicely in your range.

    Keep in mind that the 30mm is pretty heavy too. I'd opt for the 24mm.

    Clear, Dark Skies
    John (Urban Astronomer)
    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.

    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.
    Dob; XLT 150 Dob; XLT 120EQ; Lunt Solar 60 PT/B1200; ES AR102; SW Pro 100ED; 2 SW Pro 80ED's; 90mm Eq; WO Z-61; SW 90mm Virtuso Mak; 2
    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.
    ST-80's; Quark-C; Cams: ASI120MM-S, ASI174MM & ASI174MM-cooled


    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.

    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.

    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.

    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.

  4. #4
    DM1975's Avatar
    DM1975 is offline Bright Giants
    Points: 8,841, Level: 65
    Level completed: 31%, Points required for next Level: 209
    Overall activity: 0%
    Achievements:
    2 Posts Achievement20 Posts Achievement!50 Posts Achievement!5 Threads Achievement!200+ Posts Achievement!
    Join Date
    Mar 2014
    Location
    Manhattan Kansas
    Posts
    560
    Points
    8,841
    Level
    65
    Thanks
    328
    Thanked 102x 77 Posts

    Default Re: 12 Inch Dob - Are these the right eyepieces?

    Don't forget the 6.7mm. I'd probably go for that and the 18mm if it were me.
    Apertura AD10, flocked, cocked, and ready to rock! / Telrad / leveling base/ other stuff
    ES EP's; 82° 6.7mm, 11mm, 14mm/ GSO EP's; 30mm Wide Field, 9mm Plossl/ Orion Omni 2x Barlow
    Steve - KD0TPW
    Who would believe that so small a space could contain the images of the whole universe? -Leonardo da Vinci

  5. #5
    Robrj's Avatar
    Robrj is offline Gold Supporter
    Points: 27,082, Level: 100
    Level completed: 0%, Points required for next Level: 0
    Overall activity: 0%
    Achievements:
    2 Posts Achievement20 Posts Achievement!50 Posts Achievement!5 Threads Achievement!200+ Posts Achievement!
    Join Date
    Dec 2014
    Location
    Escondido, CA
    Posts
    2,493
    Points
    27,082
    Level
    100
    Thanks
    154
    Thanked 855x 633 Posts

    Default Re: 12 Inch Dob - Are these the right eyepieces?

    The 4.7mm is going to be a limited-use eyepiece. It'll require great seeing. Since you have the barlow, I would add it last. I prefer looking through the eyepiece by itself over using a barlow just for the convenience factor. Barlowing the 8.8mm will be equally as rare (4.4mm). My highest power is 5.5mm.

    My most used eyepiece is the 24mm. I use it more than the 18mm. It gives me about a 1.3* view.
    Rob

    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.


    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.
    : Celestron 130SLT,
    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.
    Skyview Pro 8",
    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.
    12"
    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.
    Dob. Orion ED80T CF
    Mount: AVX
    Cameras: Starlight Xpress Lodestar X2M, ZWO ASI294MC, ASI224MC
    My Images: http://www.astrobin.com/users/Robrj/

  6. #6
    not_Fritz_Argelander's Avatar
    not_Fritz_Argelander is offline HYPER GIANT
    Points: 182,321, Level: 100
    Level completed: 0%, Points required for next Level: 0
    Overall activity: 15.0%
    Achievements:
    365 Days+ Registered Achievement!2 Posts Achievement20 Posts Achievement!750 Days+ Registered Achievement!First 1000 Experience Points
    Awards:
    Thread Award
    Join Date
    Jul 2011
    Location
    US
    Posts
    22,023
    Points
    182,321
    Level
    100
    Thanks
    7,254
    Thanked 46,388x 14,949 Posts
    Blog Entries
    59

    Default Re: 12 Inch Dob - Are these the right eyepieces?

    Which Dob BTW?

    I'd agree with folks above about 24mm instead of 30mm. Plus you want something with about a 2mm exit pupil since that reveals all the detail you can resolve so that would be something in the 9-11 mm range. Then for nights when the seeing is very good something around 5mm, maybe the 6.7 in that your series? For wonderful nights that are very rare use the Barlow to double.

  7. The Following User Says Thank You to not_Fritz_Argelander For This Useful Post:

    j.gardavsky (05-09-2016)

  8. #7
    TheNewGuyHere's Avatar
    TheNewGuyHere is offline Main Sequence
    Points: 1,557, Level: 23
    Level completed: 57%, Points required for next Level: 43
    Overall activity: 0%
    Achievements:
    2 Posts Achievement5 Threads Achievement!20 Posts Achievement!50 Posts Achievement!First 1000 Experience Points
    Join Date
    May 2016
    Location
    Chicago
    Posts
    52
    Points
    1,557
    Level
    23
    Thanks
    6
    Thanked 1 Time in 1 Post

    Default Re: 12 Inch Dob - Are these the right eyepieces?

    Thanks for the info - I am 32 but only getting older so I will go with the 24, 18, and 11. This should give me a good range with barlow: 5.5,7,9,11, 12, 14,18, 24... I think my scope is a Hardin Deep Space Hunter. It only says deep sky hunter on the side and has an after market box that is heavy wood with no labels. I also have an advanced vx with the 6 inch refactor that came with it to get my feet wet in AP. I am hoping to use these same lenses with it and upgrade the scope to something with a 2 inch focuser.

    Thanks!!!

  9. #8
    not_Fritz_Argelander's Avatar
    not_Fritz_Argelander is offline HYPER GIANT
    Points: 182,321, Level: 100
    Level completed: 0%, Points required for next Level: 0
    Overall activity: 15.0%
    Achievements:
    365 Days+ Registered Achievement!2 Posts Achievement20 Posts Achievement!750 Days+ Registered Achievement!First 1000 Experience Points
    Awards:
    Thread Award
    Join Date
    Jul 2011
    Location
    US
    Posts
    22,023
    Points
    182,321
    Level
    100
    Thanks
    7,254
    Thanked 46,388x 14,949 Posts
    Blog Entries
    59

    Default Re: 12 Inch Dob - Are these the right eyepieces?

    Your scope is then an optical cousin of the Zhumell 12 and Apertura 12 that many favor here. Close to f5 so easy to sort out which fl eps go with what exit pupil.

    Since you are 34 you can probably get away with using the 30mm. I didn't start to get out of being able to dilate to 6mm until I passed 55.
    bladekeeper likes this.

  10. #9
    Bigzmey's Avatar
    Bigzmey is offline HYPER GIANT
    Points: 40,753, Level: 100
    Level completed: 0%, Points required for next Level: 0
    Overall activity: 59.0%
    Achievements:
    2 Posts Achievement20 Posts Achievement!5 Threads Achievement!50 Posts Achievement!200+ Posts Achievement!
    Join Date
    Sep 2015
    Location
    Planet Earth
    Posts
    7,548
    Points
    40,753
    Level
    100
    Thanks
    1,801
    Thanked 3,186x 2,292 Posts

    Default Re: 12 Inch Dob - Are these the right eyepieces?

    I think you on the right track there. 11 mm will give you more options than 8.8 mm.

    Just consider that 30 mm is huge and heavy. I have ES 68 degree 24 mm and like it a lot as wide view, scouting EP.

  11. The Following User Says Thank You to Bigzmey For This Useful Post:

    not_Fritz_Argelander (05-09-2016)

  12. #10
    not_Fritz_Argelander's Avatar
    not_Fritz_Argelander is offline HYPER GIANT
    Points: 182,321, Level: 100
    Level completed: 0%, Points required for next Level: 0
    Overall activity: 15.0%
    Achievements:
    365 Days+ Registered Achievement!2 Posts Achievement20 Posts Achievement!750 Days+ Registered Achievement!First 1000 Experience Points
    Awards:
    Thread Award
    Join Date
    Jul 2011
    Location
    US
    Posts
    22,023
    Points
    182,321
    Level
    100
    Thanks
    7,254
    Thanked 46,388x 14,949 Posts
    Blog Entries
    59

    Default Re: 12 Inch Dob - Are these the right eyepieces?

    Quote Originally Posted by Bigzmey View Post
    I think you on the right track there. 11 mm will give you more options than 8.8 mm.

    Just consider that 30 mm is huge and heavy. I have ES 68 degree 24 mm and like it a lot as wide view, scouting EP.
    All true. When youngsters visit I just can't resist trotting out longer fl eps and wowing those whose eyes can still appreciate it. Balance problems are easily solved with two of these
    Amazon.com: SUPER-Strong Neodymium Magnet Holds 35 Lbs! Carabiner Snap Hook & Split Ring: Home & Kitchen

    for every one of these
    Amazon.com : Bell Fit Soft Tone Wrist Weights (1-Pound Each, Pack of 2) : Sports & Outdoors

    The weights scrunch fit into a pair of magnetic carabiners and balance is to be had easily. Then even my Panoptic 35 is ready to rock for the kids with 7mm exit pupils. At least I get to vicariously appreciate the reaction.
    bladekeeper likes this.

 

 
Page 1 of 2 12 LastLast

Similar Threads

  1. 2 inch eyepieces
    By garskofone in forum Astronomy Beginners Forum
    Replies: 12
    Last Post: 04-10-2016, 04:38 PM
  2. Use of 2 inch eyepieces
    By georgg in forum Astronomy Beginners Forum
    Replies: 2
    Last Post: 11-21-2014, 11:57 AM
  3. 1.25 inch vs 2 inch eyepieces
    By pbishop in forum Telescope Eyepieces Forum
    Replies: 8
    Last Post: 06-26-2012, 03:11 PM
  4. 2 Inch Versus 1.25 Inch Telescope Eyepieces?
    By admin in forum Telescope Eyepieces Forum
    Replies: 4
    Last Post: 02-20-2009, 09:39 PM
  5. C-8 and 2-inch eyepieces?
    By George Normandin in forum Amateur Astronomy Forum
    Replies: 5
    Last Post: 11-26-2005, 06:45 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Powered by vBulletin® Version 4.2.0
Powered by vBulletin®
All times are GMT. The time now is 01:28 PM.