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how many eyepieces with 2x OCA & .5 reducer?

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#1 Guest_**DONOTDELETE**_*

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Posted 08 May 2003 - 02:44 PM

Hi,

I'm trying to decide between the Denkmeier standard and the Siebert Black Night binos. Which ever one I get I'll be getting both the .5 reducer and a multiplier OCA for my 8" LX200GPS UHTC. My question is since each eyepiece set will be like having 3 sets with this setup, which 2 eyepiece sets would you get if you were in my position (size, not manufacturer or type)?

Thanks,

Bob Veazey

#2 jrcrilly

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Posted 08 May 2003 - 03:14 PM

Hi, Bob.

Depending on your observing priorities, for that telescope I'd either go with something around 30mm and 20mm (deep sky) or 10mm and 15mm (planets and smaller DSO's). I'm gonna begin with 14mm, 19mm, and 32mm.

John

#3 Guest_**DONOTDELETE**_*

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Posted 08 May 2003 - 03:54 PM

Hi Bob,
John has almost the same list I have for you.Assuming binoviewing only, I would start with a pair 22.5mm at 70degree AFOV.This would give nearly a 1.5degree true field with the focal reducer in place and about 47x,...117x in the binos without the focal reducer and 176x with the1.8 OCA
mounted in the binoviewer.This would one set of premium eyepieces to start with, you could then add a pair of 15mm and 10mm also of high quality later.Hope this is helpful.Scotty :)


#4 Guest_**DONOTDELETE**_*

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Posted 09 May 2003 - 02:29 AM

Hi Bob:

Since your telescope is F/10, the first set I would consider is right around 20mm. That gives you a 2mm exit pupil, and is the sweet spot for most viewing. That's about 100X on your scope. The reducer will bring the scope down into the area of F/5, and those eyepieces will perform as if they were 40mm eps. That's 50X. A magnifying lens will take you to aprroximately F/20, and 200X.

For a second eyepiece, I'd pick something in the 15mm range.
135X with no correcting lens, 67x with a reducer and 270X with the magnifier.

Whether you go with wide field eyepieces or Plossls/Orthos depends on your budget. Wide field eyepieces are nice, but you will find *very* pleasing views with eyepieces such as Celestron Ultimas and their various clones.

Clear skies,
Jim


#5 Guest_**DONOTDELETE**_*

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Posted 09 May 2003 - 09:59 PM

Thanks guys. I have the Meade Eyepiece deal and today bought 15mm, 20mm, & 26mm matching eyepieces from someone on Astromart. I know they aren't wide field eyepieces but hopefully they'll be okay to start with. I can always get other types later.

Now I just have to decide which binoviewer to buy. Denk standard, or Black Night. Any suggestions?

#6 jrcrilly

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Posted 09 May 2003 - 10:37 PM

Hi, Bob.

I've used the later Meade SP's in those focal lengths in cyclops mode on many different scopes and they are very usable. I haven't seen reports comparing the Black Night and the Denkmeier directly but can report that I'm quite pleased with the Black Night.



#7 Guest_**DONOTDELETE**_*

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Posted 09 May 2003 - 11:53 PM

Hi Bob,
If you ask me,and you did,I know the Denkmeier well and it is fantastic!A lot of members here use them and have nothing but the highest praise for the binoviewer and the company that stands behind them 100%.
Tom Munroe

#8 Guest_**DONOTDELETE**_*

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Posted 10 May 2003 - 08:14 PM

Tom,

Do you have the standard or the new multi coated version? What size and type of scope do you have and have you looked through an 8" SCT with the Denk?

Thanks,

Bob Veazey

#9 Guest_**DONOTDELETE**_*

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Posted 10 May 2003 - 10:48 PM

Hi Bob,
I use my Denmeier mostly in my 12"lx200 but also use it with my Synta 102mm refractor that is piggybacked on the SCT.I used to have an eight inch SCT (lx10) but aperature fever struck.You will have no trouble with your scope.If you can swing it try to get a starsweeper from Denkmeier too.It will blow you away with the wide FOV.Great on the SCT!I should add I got my binoviewer after I traded the 8" so I haven't used mine with that scope.

Attached Thumbnails

  • 1618-APR24 me & scope.jpg


#10 Guest_**DONOTDELETE**_*

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Posted 11 May 2003 - 06:10 PM

Tom,

Denkmeier has a new package deal where you can get the standard with the Starsweeper for $599. I think i'll be getting that along with the 2x module for $119 more. I very much enjoy looking at many of the DSOs in the 8-10Mag range with my 8" LX200GPS UHTC. I hope the Denk won't reduce the light too much to enjoy viewing these.

Bob Veazey

#11 John_Gillies

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Posted 11 May 2003 - 07:17 PM

You will like that combination for sure. That's what I have for my 8" LX10 and 12"LX200 GPS. It's going to blow you away!!

#12 Guest_**DONOTDELETE**_*

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Posted 12 May 2003 - 11:23 AM

John Gillies,

How do 8-10Mag objects look in your LX10 with the Denk compared to cyclops view?

Bob Veazey


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