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Burgess Optical - New Eyepieces Soon

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#51 ThomasM

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Posted 01 August 2018 - 10:13 AM

It seems that the eyepieces arrived:

 

http://www.burgessop...onocentric.html

p.s. has anybody it already on order?


Edited by ThomasM, 01 August 2018 - 02:28 PM.


#52 Starman1

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Posted 01 August 2018 - 01:57 PM

Interesting: no specs other than focal length?


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#53 Ain Soph Aur

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Posted 01 August 2018 - 03:07 PM

Tammy replied and verified they were in stock and ready to ship. I ordered one just now, since I am also in TN perhaps it will arrive by this weekend.


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#54 Starman1

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Posted 01 August 2018 - 04:27 PM

Apparent field?

Multi-coated?

Blackened lens edge?

Eye relief?

Field stop diameter?

Weight?

Threaded for filters?


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#55 ThomasM

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Posted 01 August 2018 - 04:32 PM

Apparent field?

Multi-coated?

Blackened lens edge?

Eye relief?

Field stop diameter?

Weight?

Threaded for filters?

I send already  a mail to Burgess Optical asking these questions (not the last two), hopefully we get an answer soon



#56 Richard Whalen

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Posted 01 August 2018 - 04:48 PM

I have bouught various items from Bill and Tammy over the years at star parties and online. Eyepieces, diagonals, filters, binoculars etc. Never a problem. If they had an item coming in that was not in stock I was put on a waiting list, they never asked for $$ up front. Sometimes it never came in for various reasons, or by the time it did I had found something else. I dont put up money for anything that is not in stock, from anyone unless I know where they live or they have a storefront business I can get to. 

 

A 10mm mono could be a real nice planetary eyepiece, I might have to give them a call.....


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#57 buddy ny

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Posted 01 August 2018 - 05:10 PM

 I dont put up money for anything that is not in stock, from anyone unless I know where they live or they have a storefront business I can get to. 

 

A 10mm mono could be a real nice planetary eyepiece, I might have to give them a call.....

Amen to that

only 2 times ive done it were for an AP 130 & to Tom Back for a 105

AP was about 4-5 years

TMB was about a year

But I had supreme confidence in both  & knew where they lived cool.gif 

ER is king in my world be nice if this  10mm mono had some,,,,i hope

Peace

B


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#58 gnowellsct

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Posted 01 August 2018 - 08:16 PM

I would rather discuss the AP waiting list than Burgess in my preference of beaten-to-death topics.  And yet, here I am.


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#59 gnowellsct

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Posted 01 August 2018 - 09:00 PM

Ahhh.  I remember those eyepieces, the monocentrics.  Not a Tom Back design.  

All I remember from those internet war days over the monos and scope designs etc.  is that maybe Tom Back was happiest designing optics and that maybe he should have had someone else handling his business contracts.  


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#60 Jon Isaacs

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Posted 01 August 2018 - 09:07 PM

I would rather discuss the AP waiting list than Burgess in my preference of beaten-to-death topics.  And yet, here I am.

I imagine that Michael at Astronomics would also prefer to discuss another topic.  I remember the Astronomics ads in S&T that featured the BO Backpacker for quite a while.  That was one that never showed.

 

Jon



#61 gnowellsct

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Posted 01 August 2018 - 10:20 PM

I talked once with a vendor who was very upset with Losmandy for irregular delivery of G11s.  I don't know if that is still going on.  But Vixen inventory is down right now, etc.  A wait of 6 months for an AP mount is not out of the ordinary (*never mind* AP optics).    So there is some dilly-dallying across the industry.   The worst frustrations that I have seen as a neutral observer are A.  Burgess and B. Discovery telescopes.    I don't think anything else comes close.  Maybe if I rack my mind a bit....

 

Greg N



#62 eros312

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Posted 02 August 2018 - 01:00 AM

Apparent field?

Multi-coated?

Blackened lens edge?

Eye relief?

Field stop diameter?

Weight?

Threaded for filters?

Height - 52mm (44mm with eye cup down)
​Weight - 50 grams
Barrel Size - 1.25"
FOV - 35 Degrees
Eye Relief - 16mm
Field Stop - 5.5mm

Features​
3 Element Monolithic Design
2 Air to Glass Surfaces
Fully Broadband with Multiple Coatings
CNC Machined Barrel
Special Surface Treatment to Eliminate Stray Light
Laser Engraved Graphics
Fully Baffled Lower Barrel


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#63 Shneor

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Posted 02 August 2018 - 01:14 AM

I received the 10mm Monocentric I ordered , I think, over 10 years ago. I paid a $50 deposit, but Bill contacted me and sent me the eyepiece, which arived today. I took out earlier this evening and used it in my 5" AWB.

 

The eyepiece looks and feels very sturdy with coatings that you can hardly see any reflections from. The apparent field is 35*. I took the AWB to the street in front of my house and set it on a table. The mono came to focus easily, and I had three planets to look at. Magnificaiton was only 75X. As far as conditions, it was a bit breezy and there was less smoke than there has been for the last week-10 days. There's traffic on the street, so dark adaptation is pretty much irrelevant.

 

Jupiter was sharp with hints of bands occasionally visible; three moons were visible, two to the east and one to the west further from the planet. Contrast was excellent. Saturn was also very sharp with the salmon-colored band faint but visible. The rings were sharp, and I thought I detected Casini's division once. Again, excellent contrast, the background darker than I expected.  Mars was lower in the sky and the view was a bit muddy some of the time. But a couple of darker areas were easy to see, and the reddish color, perhaps strengthened by the smoke in the upper atmosphere, was prominent. I thought the colors seemed neutral.

 

That's about the inner 2/3 of the field of view. Outside that, disks became ovals.

 

I'd say this is a very good planetary eyepiece.

 

I did show the planets to a passerby who was walking her dog, she had a nice view once she removed her eyeglasses.


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#64 leonard

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Posted 02 August 2018 - 07:54 AM

Hello ,         

 

FOV - 35 Degrees
Eye Relief - 16mm

3 Element Monolithic Design
2 Air to Glass Surfaces
 

                     Seems like a lot of eye relief for a three element triplet.



#65 eros312

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Posted 02 August 2018 - 10:59 AM

Hello ,         

 

                     Seems like a lot of eye relief for a three element triplet.

Yeah, I have a feeling that's supposed to be 6mm, not 16.



#66 ThomasM

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Posted 02 August 2018 - 12:49 PM

Yeah, I have a feeling that's supposed to be 6mm, not 16.

I don't think so, it is expliticly mentioned on the website that the eyerelief is 70 % larger than that of a conventional monocentric eyepiece.

The long eyerelief indicates that the design is rather different from a Zeiss or TMB monocentric. I think it must be a very thick, cemented element, otherwise the long eyerelief can hardly be explained.


Edited by ThomasM, 02 August 2018 - 12:50 PM.

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#67 Ain Soph Aur

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Posted 02 August 2018 - 01:55 PM

Thanks for the extra details. I got a tracking number last evening for shipment today, I should have it in hand by Saturday at the latest. Looking forward to trying this in my long f/l scopes. I don’t have an EP to directly compare except the Baader Zoom Mk IV at 10mm setting, or Meade RG 20mm WA in a x2 barlow.



#68 emilslomi

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Posted 02 August 2018 - 02:37 PM

I also received a tracking number. I've been looking for some of the famed monocentrics for a while. No false hopes here about receiving that quality, but hopefully good enough to compete with my orthos and having some fun comparing.

 

Cheers, Emil


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#69 Ain Soph Aur

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Posted 02 August 2018 - 03:13 PM

Hi Emil. I am in the same boat, low expectations from all the negative opinions here but fingers crossed this will be a nice planetary/double star EP in my longer f/l scopes especially for the new AT8CC f/12 I have ordered. First light will be with the awesome custom 4” f/13 Carton as I re-start the AL Double Star and Carbon Star programs.


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#70 buddy ny

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Posted 02 August 2018 - 04:15 PM

I would rather discuss the AP waiting list than Burgess in my preference of beaten-to-death topics.  And yet, here I am.

  LOL this could be so much worse

 in some other universe this is all happening on S.A.A

peace

B


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#71 Ain Soph Aur

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Posted 02 August 2018 - 05:19 PM

USPS tracking updated, the 10mm scheduled to arrive Saturday. From past experience with USPS shipping from eastern TN, it may even be here tomorrow. Fingers crossed because we have we have a few days of clouds forecast after tomorrow night.



#72 Starman1

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Posted 02 August 2018 - 05:28 PM

I don't think so, it is expliticly mentioned on the website that the eyerelief is 70 % larger than that of a conventional monocentric eyepiece.

The long eyerelief indicates that the design is rather different from a Zeiss or TMB monocentric. I think it must be a very thick, cemented element, otherwise the long eyerelief can hardly be explained.

Make the eye lens wider and the eye relief could expand.

That might also explain the wider than usual apparent field.

This design?  https://www.handprin...tml#monocentric

This design?  https://www.handprin...5.html#hastings

This design?  https://www.cloudyni...entric-id-r2715


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#73 Ain Soph Aur

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Posted 02 August 2018 - 05:31 PM

Very nice links, Don. I have some reading to do over the upcoming Cloudy Nights this weekend smile.gif

 

How would an (reported glass not plastic) aspheric element work it in this design?


Edited by Ain Soph Aur, 02 August 2018 - 05:44 PM.


#74 Jon Isaacs

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Posted 02 August 2018 - 05:59 PM

Make the eye lens wider and the eye relief could expand.

 

 

I calculate that for a 35 degree AFoV, a 10 mm eye lens provides 16 mm of eye relief.

 

We're not talking big eye lenses.

 

The 10 mm is the only monocentic listed on the website.  Are more planned? For planetary, one wants a set of eyepieces.

 

Jon


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#75 eros312

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Posted 02 August 2018 - 06:16 PM

 

The 10 mm is the only monocentic listed on the website.  Are more planned? For planetary, one wants a set of eyepieces.

 

Jon

First post in this thread says more are planned in the next year.


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