wargentin
member
Reged: 05/04/07
Posts: 43
Loc: France
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I have recently purchased an excellent 16" F/4 telescope, with the Baader Mark V binoviewer and its 1.7x Newtonian coma corrector.
With the 24 Panoptics the view of the moon at 115x is wonderful.
I also have two 13mmT6 nagler, which provide a magnification of 213x, and although they seem very good for the deep sky, I found that they are not as comfortable as the 24 pans, because the eye placement is more critical.
I wonder if there are more comfortable eyepieces for the moon with a focal length between 13 and 16 mm. I would like a wide field of view ( at least 65°), and very important, no curvature of field at all (that probably rules out the 14 XW Pentax ). I don't wear eyeglasses for astronomy, and money is not a concern.
I have thought about some eyepieces :
15 pan, but it has a very small eye relief
16T5 nagler, but is it better than the 13T6 ?
14 Denkmeier, totally unknown here in France.
Do you know if they are better than the 13T6 according to my requirements ?
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Fujinion 16x70 FMT SX2
Orion 80ED
Orion 120ED
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Joe Ogiba
Postmaster
Reged: 02/14/02
Posts: 5446
Loc: NJ USA
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13mm Ethos will be the ultimate for lunar binoviewing if you have an IPD to match. 
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Pentax PF-80ED,Meade 102ED APO,Orion EON 72,120ST
Apex 127,C6 XLT,CR150,C9.25,XT10 ,Celestron Regal 100 F-ED, CT152
Zeiss 7x42 FL,Canon 10x42L IS WP,15x50 IS
12x36 IS II , Pentax 8x32 ED
Garrett Optical 28x110 HD-WP Signature Series
Oberwerk BT-80 45, Apogee RA-88-SA
Denk II Power x Switch binoviewer w/13mm Ethos, 20mm Pentax XW's, 20mm Widescan III's.
21mm Ethos,17mm Ethos, 22mm Nagler, 40mm Pentax XW, 14mm Pentax XL, 5.2mm Pentax XL, 8-24mm Pentax XL Zoom, 31mm Axiom LX
Member #17
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Paul G
Post Laureate
Reged: 05/08/03
Posts: 4063
Loc: Freedonia
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Unfortunately, TeleVue says the Ethos is too large for binoviewing. A shame, would be a fantastic flight.
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Gus
"Coffee leads men to trifle away their time, scald their chops, and spend their money, all for a little base, black, thick, nasty, bitter, stinking nauseous puddle water." ~The Women's Petition Against Coffee, 1674
If it ain't broke, fix it 'til it is.
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Paul G
Post Laureate
Reged: 05/08/03
Posts: 4063
Loc: Freedonia
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Quote:
I have recently purchased an excellent 16" F/4 telescope, with the Baader Mark V binoviewer and its 1.7x Newtonian coma corrector.
With the 24 Panoptics the view of the moon at 115x is wonderful.
I also have two 13mmT6 nagler, which provide a magnification of 213x, and although they seem very good for the deep sky, I found that they are not as comfortable as the 24 pans, because the eye placement is more critical.
I wonder if there are more comfortable eyepieces for the moon with a focal length between 13 and 16 mm. I would like a wide field of view ( at least 65°), and very important, no curvature of field at all (that probably rules out the 14 XW Pentax ). I don't wear eyeglasses for astronomy, and money is not a concern.
I have thought about some eyepieces :
15 pan, but it has a very small eye relief
16T5 nagler, but is it better than the 13T6 ?
14 Denkmeier, totally unknown here in France.
Do you know if they are better than the 13T6 according to my requirements ?
I use both the 13t6 and the 16t5 in the Baader MkV, find them both nice, 16 is a little less comfortable to use, possibly due to its slightly shorter eye relief. You might want to consider the 14 Radians, but they are only 60°.
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Gus
"Coffee leads men to trifle away their time, scald their chops, and spend their money, all for a little base, black, thick, nasty, bitter, stinking nauseous puddle water." ~The Women's Petition Against Coffee, 1674
If it ain't broke, fix it 'til it is.
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Rick
Post Laureate
Reged: 04/12/05
Posts: 3285
Loc: Tokyo, Japan
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I have pairs of 13mm T6 and the 15mm Pan for my Mark V. Using them in a binoviewer seems to increase the eyerelief. That makes the 15mm Pan much better and I prefer them to the 13mm T6.
Rick
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suburbanskies
sage
Reged: 12/18/04
Posts: 466
Loc: New Jersey, USA
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Quote:
13mm Ethos will be the ultimate for lunar binoviewing if you have an IPD to match.
Wow, nice photo of David Nagler binoviewing the Ethos! Did you get to try it yourself?
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Joe Ogiba
Postmaster
Reged: 02/14/02
Posts: 5446
Loc: NJ USA
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I have not, but I do plan on getting one then seeing if it's any larger in diameter than my 20mm Pentax XW's . 
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Pentax PF-80ED,Meade 102ED APO,Orion EON 72,120ST
Apex 127,C6 XLT,CR150,C9.25,XT10 ,Celestron Regal 100 F-ED, CT152
Zeiss 7x42 FL,Canon 10x42L IS WP,15x50 IS
12x36 IS II , Pentax 8x32 ED
Garrett Optical 28x110 HD-WP Signature Series
Oberwerk BT-80 45, Apogee RA-88-SA
Denk II Power x Switch binoviewer w/13mm Ethos, 20mm Pentax XW's, 20mm Widescan III's.
21mm Ethos,17mm Ethos, 22mm Nagler, 40mm Pentax XW, 14mm Pentax XL, 5.2mm Pentax XL, 8-24mm Pentax XL Zoom, 31mm Axiom LX
Member #17
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Michael Nugent
sage
Reged: 03/05/06
Posts: 324
Loc: Mukwonago, Wisconsin USA
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I also use the 15mm Pans in my Denk II and find that the eye relief is not an issue (I think Rick is correct that bino's help to improve the e.r. on the 15's). A very nice set of ep's and at a good price if still available.
Clear skies,
Mike
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Celestron CPC1100 XLT w/ Feathertouch
Stellarvue F80M Finder
Denk II Binoviewer
S2 "Shorty" Power Switch Diagonal
Doubles of:
24mm Panoptics, 19mm Panoptics,
13mm T6 Naglers, 30mm Vixen,
15mm AT Paradigm EDs, 12mm Sterlings,
9mm TMB Planetary, 23mm Stellarvues
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b1gred
Enginerd
Reged: 04/01/04
Posts: 16902
Loc: Castle Rock, CO 6677' MSL
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Dang, how close do you want to be to the moon? I have to use the "reduction" mode of my PxS on my binoviewers to use my 24Pans and see the whole disk. In "standard" or straight thru mode, I can't see the whole disk and in Magnified mode I feel like I'm gonna fall in to most of the craters...
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"Dark Skies & Great Viewing"
RandyR / W0RDR
GPS 9.25 XLT/Sky Align /FeatherTouch
TV85 w/FeatherTouch
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BlueRidge
sage
Reged: 01/12/07
Posts: 288
Loc: Blue Ridge Mtns., VA
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I used my D14s in normal mode in the PxS because my brother-in-law wanted to see the man in the moon. He was not disappointed!!
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Celestron Skymaster 15 x 70's, Miyauchi BR-141's
Celestron Nexstar 11 GPS, SkyAlign upgrade
Celestron 9.25 XLT OTA, CG-5 Mount
Stellarvue SV90TBV
Denk II Binoviewers/#S2 Power/Filterswitch
21mm and 14mm Denk EPs
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blandp11
Carpal Tunnel
Reged: 04/19/05
Posts: 1963
Loc: Glen Ridge, NJ USA
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I have a Baader Mk. V and used it with TeleVue 14mm Radians before selling them and switching to 13T6's. The Radians have larger eyerelief than the T6's which you might find works better for you. Both provided execellent views.
Philip
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Mostly refractors
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Paul G
Post Laureate
Reged: 05/08/03
Posts: 4063
Loc: Freedonia
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Quote:
I have not, but I do plan on getting one then seeing if it's any larger in diameter than my 20mm Pentax XW's .
According to TeleVue it is 65mm wide. The widest eyepieces I found useful in my binoviewer are the 55mm wide 22 Panoptics, any larger and I would have nose issues (and I don't have a large nose). I know the Ethos wouldn't work in the binoviewer for me.
http://tech.groups.yahoo.com/group/TeleVue/message/40412
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Gus
"Coffee leads men to trifle away their time, scald their chops, and spend their money, all for a little base, black, thick, nasty, bitter, stinking nauseous puddle water." ~The Women's Petition Against Coffee, 1674
If it ain't broke, fix it 'til it is.
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David E
Post Laureate
Reged: 05/25/06
Posts: 4177
Loc: North Carolina
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Quote:
I have not, but I do plan on getting one then seeing if it's any larger in diameter than my 20mm Pentax XW's .
I have one of those 20mm Penax's and love it. Having two must be nice.
David E
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David E
The funniest thing about this message is that by the time you realize it doesn't say anything, its too late for you to stop reading it.
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Sky Captain
Metal Whisperer
Reged: 11/07/04
Posts: 10375
Loc: Loc: Loc:
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Well, just a tad outside your range, but at 12mm and 80 degrees...these Speers WALER's kick some serious Moon butt!
Oh yeah, flat field too.
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Kerry
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jack45
Post Laureate
Reged: 07/07/03
Posts: 3098
Loc: Lacey WA
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What the h..., You have lost it!  What do you use to hold it up, a fork left!
Clear Skies!
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Discovery 16"f/4.5, XT12"Orion F/4.9 & Discovery 12.5"f/5.0
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jack45
Post Laureate
Reged: 07/07/03
Posts: 3098
Loc: Lacey WA
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I'm calling the EP police on you and the Refractors, Reflectors and Cats police also 
Clear Skies!
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Discovery 16"f/4.5, XT12"Orion F/4.9 & Discovery 12.5"f/5.0
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arowana
Carpal Tunnel
Reged: 01/02/06
Posts: 2905
Loc: Pleasant View,Tennessee
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Holy Moley!!!!!!!!
That right there would be the only reason a Nexstar owner would need a ladder to observe. 
Very cool!!!!
CS's
Joey
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CPC 1100
Earthwin Binoviewer with Dielectric P/F Switch
Matched Pair of 24 Pan's
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jack45
Post Laureate
Reged: 07/07/03
Posts: 3098
Loc: Lacey WA
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How far back do you stand from the telescope? One light year! 
Clear Skies!
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Discovery 16"f/4.5, XT12"Orion F/4.9 & Discovery 12.5"f/5.0
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NorthCoast
Carpal Tunnel
Reged: 12/05/04
Posts: 2308
Loc: Westerville, Ohio, U.S.A.
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Nothing beats having two small refractors/finder scopes attached to your BV...
To keep on topic, I was using two 16mm WO UWAN for a while and the view was very nice.
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Mark
Hold the "Alt Key" and type 248 on the number pad for °
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jack45
Post Laureate
Reged: 07/07/03
Posts: 3098
Loc: Lacey WA
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I used a pair of 16mm T/5 which were very nice in a Denk II. I still think he'd like the 12mm or 14mm Radian.
Clear Skies!
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Discovery 16"f/4.5, XT12"Orion F/4.9 & Discovery 12.5"f/5.0
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