Burgess Bino Viewer

[Airconvent]

I was actually considering selling off my bino viewer as I don't see much use in it until I tried it during the Mersing trip. For one, using 2 eyes was great. I found myself having to squint very hard when looking at objects and Yang Beng actually have a pirate-like eye patch!

The only issue I have is that the 17mm, although wide view were a tad too too high mag. The 32mm surprisingly was the most used eyepiece on that night and they gave pretty decent views for most objects ..even galaxies.

I wonder if anyone here has a Meade Series 4000 32mm eyepiece to sell?

Do you think I should stick to the 17mm instead. my main problem is the goto accuracy. objects are always outside the FOV using the 17mm. I think once I can improve on the goto techniques, then perhaps the 17mm would be ok after all...

rich

[elton]

First time using a binoviewer on deep sky was through rich's N8. Wow, very comfortable to view and the brighter DSOs had a 3D effect of floating over the background stars. I wonder if this novelty will wear off though and how binoviewers will fare on dim fuzzies.

Rich - were you using the 17 or 32mms to view the dumbbell?

[acc]

The only issue I have is that the 17mm, although wide view were a tad too too high mag. The 32mm surprisingly was the most used eyepiece on that night and they gave pretty decent views for most objects ..even galaxies.

The binoviewers add magnification much like a barlow. So I would suggest a higher focal length ep like a 20-25mm ep. Try not to go higher as u may notice vignetting.

[kayheem]

The other option is to add a 0.5X focal reducer like Harry Siebert's.

I have one. Rich, would you like to borrow it for a while to try it out?

Kay Heem

[wucheeyiun]

Hi Rich, i used 25mm elux plossl and very pleased with the results,
M42 really look nebulus, and certain nights i recall resolving a to e.

For that matter, anything too powerful ie 15mm and below ep will give fuzzy views due to image merging problem.

Anything more then 25mm would be a problem, as the CA for burgess is 20.2mm. With the amplification factor of roughly 1.25x, 25mm ep would be max out before vignetting.

i also use 1.25" Atik reducer with some disappointment as cannot get wide clear view...on the burgess binoviewer.

The strange thing about it is that i discovered the TV powermate works very well with the burgess as Nagler design it for long focal length Ep or camera, while other ie Ultima barlow is not satisfactory.


I really enjoyed my binoviewer, will not sell it, thanks to Chee Chien for getting for me. This bino viewer work best on very long focal lenght telescope like Mewlon 210 etc, the planetary view will be nicely amplified about 125x-150x...( hint hint ) without any barlow.

[Airconvent]

hi chee yiun/cc
mm..does this mean that the Meade 26mm maybe a tad too long?
is there a big difference between the 17 mm and 20mm.
I do still have a Meade 20mm, so if its right, I may think of getting another one for a pair.

Only worry is :
1. Visually very little difference between 17mm and 20mm
2. Different batch of Meade 20mm are slightly different..I've seen 3 Meade 4000 superplossl and they are all physically different in size!


btw, as what elton described...viewing with 2 eyes is very comfortable and it does give a 3d effect...perhaps when I can get the scope to goto more accurately, then I will be able to put it to better use.

rich

[acc]

I have seen reports of 26mm Meades working well on BO binoviewer.

But IMO where the binos excel in are not DSOs but rather in planets and the moon.