Return to the Cloudy Nights Telescope Reviews home pageAstronomics discounts for Cloudy Nights members
· Get a Cloudy Nights T-Shirt · Submit a Review / Article

Click here if you are having trouble logging into the forums

Privacy Policy | Please read our Terms of Service | Signup and Troubleshooting FAQ | Problems? PM a Red or a Green Gu… uh, User

Equipment Discussions >> Eyepieces

Pages: 1 | 2 | (show all)
Lance1234
sage
*****

Reged: 11/01/12

Loc: SoCal
Re: Highest contrast WF eyepieces in the 20mm - 30mm new [Re: JMorey]
      #5642750 - 01/25/13 02:55 PM

Quote:

I have five right now: Pentax 40mm XL, Pentax 20mm, 10mm, 7mm, 5mm XW eyepieces.


Joe,
Have you compared the 10mm 2X barlowed vs the 5mm?


Post Extras: Print Post   Remind Me!   Notify Moderator  
JMorey
member
*****

Reged: 11/27/06

Re: Highest contrast WF eyepieces in the 20mm - 30mm new [Re: Lance1234]
      #5642773 - 01/25/13 03:10 PM

Hi Lance,

No. I usually am not fond of using a barlow. Would this not cause extreme eye relief and black outs? Thanks for your input.

Best,
Joe


Post Extras: Print Post   Remind Me!   Notify Moderator  
Lance1234
sage
*****

Reged: 11/01/12

Loc: SoCal
Re: Highest contrast WF eyepieces in the 20mm - 30mm new [Re: JMorey]
      #5642908 - 01/25/13 04:19 PM

Quote:

I usually am not fond of using a barlow. Would this not cause extreme eye relief and black outs?



Joe,

It would at least place your eye pretty far away from the eye lens (the longer the focal length the worse it gets). It might or might not result in blackouts, depending upon the eyepiece. But you could use a Powermate or Telecentric Barlow which will keep your eye placement the same as the eyepiece alone.


Post Extras: Print Post   Remind Me!   Notify Moderator  
JMorey
member
*****

Reged: 11/27/06

Re: Highest contrast WF eyepieces in the 20mm - 30mm new [Re: Lance1234]
      #5644062 - 01/26/13 09:58 AM

Hi Lance,

I will definitely consider trying the Powermate with the 5mm just for the heck of it, but I am afraid that seeing usually does not support 1200x! Perhaps, if I were outside the stratosphere. Thank you.

Best,
Joe


Post Extras: Print Post   Remind Me!   Notify Moderator  
Lance1234
sage
*****

Reged: 11/01/12

Loc: SoCal
Re: Highest contrast WF eyepieces in the 20mm - 30mm [Re: JMorey]
      #5644752 - 01/26/13 05:10 PM

Joe,

Powermate the 10mm, not the 5mm . Then, assuming it's a 2X Powermate, compare the Powermated 10mm with the 5mm. If the views look the same, than you can sell the 5mm and buy a new toy!


Post Extras: Print Post   Remind Me!   Notify Moderator  
sixela
Postmaster
*****

Reged: 12/23/04

Loc: Boechout, Belgium
Re: Highest contrast WF eyepieces in the 20mm - 30mm new [Re: Lance1234]
      #5653001 - 01/30/13 06:49 PM

Back to the original question, in that order:


Pentax XW (20mm, 30mm)
21mm Ethos
20T5, 26T5 Nagler (with an edge to the 20T5)

In the 'it's hard to resist mentioning it even though it doesn't fit the range':
17.3mm Delos.


Post Extras: Print Post   Remind Me!   Notify Moderator  
Pages: 1 | 2 | (show all)


Extra information
26 registered and 42 anonymous users are browsing this forum.

Moderator:  ausastronomer, droid, Scott in NC 

Print Thread

Forum Permissions
      You cannot start new topics
      You cannot reply to topics
      HTML is disabled
      UBBCode is enabled


Thread views: 1460

Jump to

CN Forums Home


Cloudy Nights LLC
Cloudy Nights Sponsor: Astronomics