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Saving for my first special eyepiece - What is best? (102mm ED Refractor f/6)

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#26 Jethro777

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Posted 15 July 2019 - 07:18 PM

...But my thinking goes like this:...  He has some magnificent objects, the great Magellan Clouds, Eta Carinae nebulae, 47 Tucanae.. For me, I would want an eyepiece that would show these in their fullest. Ideally, that would be something like the 31mm Nagler.  

 

Jon

Hi Jon, 

And your right, I am not that interested in planets. A 31mm Nagler sounds wonderful, but is sadly out of reach.  $300 or $400 (AU), maybe not.  It would almost certainly need any eyepiece to be used, so that I could afford it.  


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#27 russell23

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Posted 15 July 2019 - 07:56 PM

Hi Jon, 

And your right, I am not that interested in planets. A 31mm Nagler sounds wonderful, but is sadly out of reach.  $300 or $400 (AU), maybe not.  It would almost certainly need any eyepiece to be used, so that I could afford it.  

The APM 30mm UFF has a 38mm field stop and costs $230.  The 31mm Nagler has a 42mm field stop.   So you might look at the 30mm APM has a much less costly alternative that still gives you a really nice widefield experience.   It has very good edge performance in my 102mm f/7 and 120mm f/7.5.  


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#28 Jon Isaacs

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Posted 15 July 2019 - 09:12 PM

The APM 30mm UFF has a 38mm field stop and costs $230.  The 31mm Nagler has a 42mm field stop.   So you might look at the 30mm APM has a much less costly alternative that still gives you a really nice widefield experience.   It has very good edge performance in my 102mm f/7 and 120mm f/7.5.  

:waytogo:

 

I have not used this eyepiece but it seems like it could be the right eyepiece..  

 

Jon



#29 25585

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Posted 16 July 2019 - 06:58 PM

Seems to me that the recommendation should reflect the interests and scope of the poster.

 

He says he is looking for his first special eyepiece for his 4" refractor for viewing DSOs and clusters, and that he has a 2x barlow. He did not mention Saturn.

 

It seems to me that there's two kinds of recommendation that fit here, and would get a lot of use. 

 

The lowest power like a 31 Nagler would get a lot of use, as would something in the sweet spot for resolution of ~2x focal ratio.

 

That's why I suggested 12.5mm, With the 2x barlow to 6.25mm. Both of those will get a lot of use, and I'd bet more than the super-low, wide view.

 

So something like the 12.5 Morpheus (should be found for $170 used) followed by a 5.5 Meade UWA (can be found for $80 new on sales) would be great, especially with barlow.

My first wow views of DSOs were with a Nagler 13mm, now replaced by the greatly superior 12mm ES92. Fantastic. The 12.5mm Morpheus is another excellent eyepiece, a preferable alternative to a Nagler.   



#30 Jethro777

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Posted 18 July 2019 - 03:42 AM

Well, 

I went a little silly and broke the bank - but lashed out on a 24mm Panoptic and a x2.5 Powermate (which will give me a 9.6mm).  

I now have a lovely eyepiece, and just need a sweeper later on (perhaps a APM 30mm UFF), and perhaps something in the 12-18 range, which may well be the Morpheus 17.5.  

That will do for now.  I'll clear out the rest of my eyepieces and go from there.


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#31 Jethro777

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Posted 23 July 2019 - 05:45 PM

Well, as I posted, I ended up getting a 24mm Panoptic and just ordered a 2x powermate. I tried the Panoptic for the first tune, and it really is lovely. The clarity from edge to edge as well as the wide field was simply wonderful.
I also looked at Saturn and it was simply amazing - although very small. I will try it with the Powermate when it arrives.
My next eyepiece will be the 17.5mm Morpheus, and then I was thinking the 13mm Nagler type VI is next and I will work my way down (skipping the focal lengths I can achieve with the Powermate).
Is the 13mm Nagler type 6 the one to get? (After the Nagler, if I like the Morpheus I might get the 6.5mm version)...

#32 areyoukiddingme

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Posted 23 July 2019 - 06:17 PM

I picked up a use 2.5x powermate a couple weeks ago, and have been using it with 24/68 Explore Scientific.

 

Works great. Completely un-vignetted view and very transparent. I can only imagine the 24 Panoptic is more/better.

 

I also have a 17.5 Morpheus, which works very well indeed with the PM, so that would be a good choice to get to 7mm. But, 17.5 is also going to be very close to 24mm in your refractor. I'd be inclined to aim for a 13 Nagler or 12.5 Morpheus instead.



#33 Jethro777

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Posted 25 July 2019 - 09:02 PM

Yep - ended up with a 13mm Nagler type 6. Coming soon, can't wait!


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