Jump to content

  •  

CNers have asked about a donation box for Cloudy Nights over the years, so here you go. Donation is not required by any means, so please enjoy your stay.

Photo

9mm APM 100°

  • Please log in to reply
21 replies to this topic

#1 Miranda2525

Miranda2525

    Gemini

  • *****
  • topic starter
  • Posts: 3,363
  • Joined: 12 Jul 2016

Posted 13 October 2021 - 04:41 PM

I own a 20mm APM 100°. It's a really good eyepiece when coupled with my GSO coma corrector. I have the 13mm APM 100° on the way.
Eye relief on the 20mm is excellent, considering it is a 100 degree eyepiece. I'm sure that the 13mm will be just as generous, or close.

 

My question for anybody who owns all three is: How is the eye relief on the 9mm APM 100° ? 

I want to ask first because I was thinking of getting the 9mm one also. I do not wear glasses when observing, but still want to know exactly what the experience is like compared to the other two in this line.

 

I would be replacing my 9mm Baader Morpheus if I was to get the 9mm APM 100°.

 

Thanks for your consideration!



#2 havasman

havasman

    Voyager 1

  • *****
  • Posts: 13,165
  • Joined: 04 Aug 2013
  • Loc: Dallas, Texas

Posted 13 October 2021 - 04:50 PM

Specs call out 15mm ER for the 20mm and 13mm for both the others.



#3 Miranda2525

Miranda2525

    Gemini

  • *****
  • topic starter
  • Posts: 3,363
  • Joined: 12 Jul 2016

Posted 13 October 2021 - 05:03 PM

Specs call out 15mm ER for the 20mm and 13mm for both the others.

Specs and "real world" use are two different things. I'm looking for the real deal, lol.


Edited by Miranda2525, 13 October 2021 - 05:10 PM.


#4 CeleNoptic

CeleNoptic

    Surveyor 1

  • *****
  • Posts: 1,764
  • Joined: 20 Dec 2007
  • Loc: Mid-Atlantic, Bortle 7

Posted 13 October 2021 - 05:12 PM

Not sure if it helps, but Ernest has listed for both (13mm and 9mm XWAs) 13mm from glass and 8mm from folded down eyeguard. For the 20mm (WO version) these specs were 14mm and 9mm, respectively.


  • Miranda2525 likes this

#5 Battlestamps

Battlestamps

    Mariner 2

  • -----
  • Posts: 253
  • Joined: 25 Feb 2021
  • Loc: Upstate New York

Posted 13 October 2021 - 05:32 PM

 

 

I would be replacing my 9mm Baader Morpheus if I was to get the 9mm APM 100°.

 

Thanks for your consideration!

I have both these eyepieces and found neither to be a replacement of the other. I love the broader views of the APM XWA 9mm, but the Baader Morpheus 9mm to be more comfortable. I wear glasses, but not when viewing. I'm keeping both. 


  • iKMN and Miranda2525 like this

#6 Miranda2525

Miranda2525

    Gemini

  • *****
  • topic starter
  • Posts: 3,363
  • Joined: 12 Jul 2016

Posted 13 October 2021 - 05:39 PM

I forgot to mention that I also own the 5mm APM 110. That one is listed at 15mm of eye relief, but in the real world, it feels a lot less.



#7 iKMN

iKMN

    Viking 1

  • *****
  • Posts: 780
  • Joined: 03 Aug 2015
  • Loc: South Florida

Posted 13 October 2021 - 10:58 PM

I have both these eyepieces and found neither to be a replacement of the other. I love the broader views of the APM XWA 9mm, but the Baader Morpheus 9mm to be more comfortable. I wear glasses, but not when viewing. I'm keeping both. 

I don’t have any XWA yet but I have a complete Morpheus set and a spread of Orthos as well as a Zoom. I think like you my ultimate goal is to have a set of both the Morpheus and the XWA HDC. I guess it will be a while before the APMs are back in stock so I have time to save $$.  

 

To the OP I’ve had both the Ethos and the ES 100s before in the past but never the APMs. I could most definitely tell the difference between the 15mm eye relief tv vs the 12-13mm eye relief of the Es.  But I still felt the ES eye relief was comfortable enough to use if that helps since the APM has similar listed eye relief values as the ES100s.


  • Miranda2525 likes this

#8 Miranda2525

Miranda2525

    Gemini

  • *****
  • topic starter
  • Posts: 3,363
  • Joined: 12 Jul 2016

Posted 13 October 2021 - 11:09 PM

I don’t have any XWA yet but I have a complete Morpheus set and a spread of Orthos as well as a Zoom. I think like you my ultimate goal is to have a set of both the Morpheus and the XWA HDC. I guess it will be a while before the APMs are back in stock so I have time to save $$.  

 

To the OP I’ve had both the Ethos and the ES 100s before in the past but never the APMs. I could most definitely tell the difference between the 15mm eye relief tv vs the 12-13mm eye relief of the Es.  But I still felt the ES eye relief was comfortable enough to use if that helps since the APM has similar listed eye relief values as the ES100s.

I have tried the 20mm, 14mm and 9mm explore scientific 100's. From memory, the 20mm was comfortable, and so was the 14mm. Also from memory, the 9mm was a bit tighter for eye relief, but not too bad.

 

I can see from owning the 20mm APM 100° that it has a bit more eye relief because the top lens is not as recessed. I am guessing that the 100 degree APM's will all be close in feel as the explore scientific counterparts.



#9 CrazyPanda

CrazyPanda

    Gemini

  • *****
  • Posts: 3,139
  • Joined: 30 Sep 2012

Posted 13 October 2021 - 11:46 PM

I find the 15mm (on paper) of my 8 ethos to be tight relative to the AFOV. If the 9 APM is 13mm on paper, that’s going to be a tough eyepiece to look through to get the whole field. The 8 ethos eye lens is pretty much right at the surface and so I don’t see how the 9 APM could magically squeeze as much or more effective ER out of 13mm as the 8 ethos does with 15.
  • Miranda2525 likes this

#10 Antodumont

Antodumont

    Sputnik

  • -----
  • Posts: 46
  • Joined: 07 Nov 2017
  • Loc: Northern french Alps

Posted 14 October 2021 - 02:11 AM

   Hello !

 

I have a 13mm since 2 or 3 years and found recently a second hand 9mm , I didn't compare the eye relief but I found the 9mm to be really very very confortable , same impression from my girlfriend who is not very experienced (just spending few minutes on the eyepiece from times to times)

 

We're both not wearing glasses


  • havasman and Miranda2525 like this

#11 Roman M

Roman M

    Lift Off

  • -----
  • Posts: 2
  • Joined: 19 Sep 2021
  • Loc: Украина

Posted 14 October 2021 - 02:15 AM

I have 4 Apm eyepieces, including 9mm. I observe without glasses and I did not notice any difference in the comfort of observation between them. They are all comfortable and I really like them.
  • esd726, havasman, iKMN and 1 other like this

#12 TayM57

TayM57

    Messenger

  • *****
  • Posts: 425
  • Joined: 15 Nov 2012

Posted 14 October 2021 - 09:08 AM

I have both these eyepieces and found neither to be a replacement of the other. I love the broader views of the APM XWA 9mm, but the Baader Morpheus 9mm to be more comfortable. I wear glasses, but not when viewing. I'm keeping both. 

Have you tried unscrewing the eye guard from the Morpheus 9mm? It makes for a cool RKE-like effect. Whenever I use the 9mm, it's usually with the eye guard unscrewed. Just a wonderful eyepiece.



#13 havasman

havasman

    Voyager 1

  • *****
  • Posts: 13,165
  • Joined: 04 Aug 2013
  • Loc: Dallas, Texas

Posted 14 October 2021 - 09:48 AM

I'm not sensitive to eye relief and have owned and used all 3 generally discussed hyperwide brands in most or all the focal lengths offered in each brand. The two I have kept in my kit are Ethos (21, 10, 6, 4.7, 3.7) and the APM's (13, 7). Those make up my main eyepiece kit. All of the Ethos and APM HDC's are quite comfortable. IMO if you have relatively normal eyes and face shapes (whatever that may be) these eyepieces will be comfortable. I use all focal lengths available to me without consideration of comfort or performance in the field as both ep types perform really well for the observation, handle easily and are equally comfortable. The HDC's may have a very slight edge in ergonomics as they are a bit lighter, have knurling my fingers like and have the eye cup design I most like: one that does not have to be manipulated but is always at the right height to place my eye where the full field can be seen just by seating the eye so the cup barely touches my face. And of course their caps fit and stay on much better. But TV don't do caps well at all.

 

Others with special needs may find one or the other less comfortable but those are outlier circumstances. Such a user may be best served by the Morpheus, which I have not used but respect due to their wide acceptance and appreciation among experienced and capable observers, and/or Delos, with which I do have experience.

 

I had the refractor at some friends' lake house a couple of weekends ago as they'd said they might enjoy it. I took an ES68 24 and the 7 and 3.7's along to see planets and prominent objects. Neither the 7 or 9 year-olds nor their parents had any difficulty seeing the images (Alberio, Cr 399, pastel bands on Saturn, detail and moons of Jupiter, phase of Venus, M57, M31/32) at any exit pupil or eye relief.

 

Sometimes I do think we look at eyepiece specs charts and make problems for ourselves.


Edited by havasman, 14 October 2021 - 04:50 PM.


#14 Battlestamps

Battlestamps

    Mariner 2

  • -----
  • Posts: 253
  • Joined: 25 Feb 2021
  • Loc: Upstate New York

Posted 14 October 2021 - 11:39 AM

Have you tried unscrewing the eye guard from the Morpheus 9mm? It makes for a cool RKE-like effect. Whenever I use the 9mm, it's usually with the eye guard unscrewed. Just a wonderful eyepiece.

I have unscrewed the eye guard from the 9mm and then 17.5mm, but not for visual use, but for eyepiece projection photography. With a step-up ring I can attach my Olympus TG-6 directly to it which is great for moon photos. I have done the same with the APM XWA and UFF eyepieces too.



#15 iKMN

iKMN

    Viking 1

  • *****
  • Posts: 780
  • Joined: 03 Aug 2015
  • Loc: South Florida

Posted 14 October 2021 - 03:23 PM

I have tried the 20mm, 14mm and 9mm explore scientific 100's. From memory, the 20mm was comfortable, and so was the 14mm. Also from memory, the 9mm was a bit tighter for eye relief, but not too bad.

 

I can see from owning the 20mm APM 100° that it has a bit more eye relief because the top lens is not as recessed. I am guessing that the 100 degree APM's will all be close in feel as the explore scientific counterparts.

THat's what I am counting on too.  Hope to pull the trigger on the APMs next year when back in stock.   I got along with the ES100s just fine.  Most everyone likes the APMs over the ES so I think that if there was a big difference in eye relief people would speak up.    Let us know when you get all yours and how you like them.  

 

cheers

 

K


  • Miranda2525 likes this

#16 Miranda2525

Miranda2525

    Gemini

  • *****
  • topic starter
  • Posts: 3,363
  • Joined: 12 Jul 2016

Posted 14 October 2021 - 04:40 PM

A really BIG "Thank you" going out to all who replied so far. It's nice to get the information we all need here.

 

flowerred.gif



#17 faackanders2

faackanders2

    Fly Me to the Moon

  • *****
  • Posts: 6,987
  • Joined: 28 Mar 2011

Posted 14 October 2021 - 07:47 PM

I forgot to mention that I also own the 5mm APM 110. That one is listed at 15mm of eye relief, but in the real world, it feels a lot less.

Does 5mm APM really have 110 AFOV, or did they just round up?



#18 Miranda2525

Miranda2525

    Gemini

  • *****
  • topic starter
  • Posts: 3,363
  • Joined: 12 Jul 2016

Posted 14 October 2021 - 07:48 PM

Does 5mm APM really have 110 AFOV, or did they just round up?

:shrug:



#19 SeattleScott

SeattleScott

    Voyager 1

  • *****
  • Posts: 11,980
  • Joined: 14 Oct 2011

Posted 14 October 2021 - 09:27 PM

Isn’t it a clone of the 4.7mm 110 AFOV Ethos?

Granted it isn’t unusual for specs to be off a couple degrees or so with most eyepieces.

Scott

Edited by SeattleScott, 14 October 2021 - 09:28 PM.


#20 CeleNoptic

CeleNoptic

    Surveyor 1

  • *****
  • Posts: 1,764
  • Joined: 20 Dec 2007
  • Loc: Mid-Atlantic, Bortle 7

Posted 14 October 2021 - 10:34 PM

Does 5mm APM really have 110 AFOV, or did they just round up?

 
If you mean AFOV (not effective FOV) than yes, it does.



#21 Miranda2525

Miranda2525

    Gemini

  • *****
  • topic starter
  • Posts: 3,363
  • Joined: 12 Jul 2016

Posted 16 October 2021 - 06:17 PM

Not sure if it helps, but Ernest has listed for both (13mm and 9mm XWAs) 13mm from glass and 8mm from folded down eyeguard. For the 20mm (WO version) these specs were 14mm and 9mm, respectively.


If the 9mm has the same feel and ER as the 13mm, I will like it. I got the 13mm yesterday and in the scope it's really good for ER.
  • iKMN likes this

#22 russell23

russell23

    Voyager 1

  • *****
  • Posts: 12,141
  • Joined: 31 May 2009
  • Loc: Upstate NY

Posted 16 October 2021 - 06:40 PM

Does 5mm APM really have 110 AFOV, or did they just round up?

I would say so.  I compared the 4.77mm APM XWA to the 8mm Ethos and 7mm APM XWA and it definitely has a noticeable larger AFOV than both.


  • Miranda2525 likes this


CNers have asked about a donation box for Cloudy Nights over the years, so here you go. Donation is not required by any means, so please enjoy your stay.


Recent Topics






Cloudy Nights LLC
Cloudy Nights Sponsor: Astronomics