Lightbridge Optics?

astrofiend · #1 25-05-2006, 01:43 PM

What seems to be the consensus on the optics in the Lightbridges (specifically the 30 cm)? I've read a few reports out there saying vague things such as "the optics are good" or "great optics for the price", but there doesn't seem to be any star test reports or in depth evaluations of optical performance. Usually when a new scope comes out, about a million star test results flow in almost immediately. Can anyone comment or point me in the right direction?

Cheers!

iceman (Mike) · #2 25-05-2006, 02:03 PM

They're made by GSO, and therefore I assume the same optics in all the GSO dobs available from Bintel, Andrews and others.

I guess you'd conclude from that, "great for the price"

Many of us with GSO optics are doing high resolution planetary imaging, and others are doing deep space imaging as well. As long as it's collimated, it performs very well for something that's mass-produced.

Sorry I can't give anything more technical

ving (David) · #3 25-05-2006, 02:13 PM

yup, as mike said the optics are GS. if you do a search on GS dobs you may very well find what you are looking for

according to the GS site the primaries aer 1/12th wave

xstream (John) · #4 25-05-2006, 02:17 PM

Definitely "Great for the Price".
At $1500 for the 12" Deluxe, What more can you ask for?

ving (David) · #5 25-05-2006, 02:18 PM

a nagler thrown in?

h0ughy (David) · #6 25-05-2006, 02:21 PM

Quote:

Originally Posted by xstream

Definitely "Great for the Price".
At $1500 for the 12" Deluxe, What more can you ask for?

16"'s

xstream (John) · #7 25-05-2006, 03:09 PM

Keep dreaming Dave and Dave.

astronut (John) · #8 25-05-2006, 04:04 PM

Hi astrofiend, The best test of any scope is to get it under the stars on a steady night and look through the eyepiece.
Yes, I own a LB and the images I've seen through it are clear and sharp.
Theoretical tests are just that, theoretical.
Properly collimated, using good quality e/p's, I doubt you would see a difference between the G.S.O. mirrors and say, something twice as dear.

Don't get caught up in all the theory, just enjoy your scope.

Quote:

Originally Posted by astrofiend

What seems to be the consensus on the optics in the Lightbridges (specifically the 30 cm)? I've read a few reports out there saying vague things such as "the optics are good" or "great optics for the price", but there doesn't seem to be any star test reports or in depth evaluations of optical performance. Usually when a new scope comes out, about a million star test results flow in almost immediately. Can anyone comment or point me in the right direction?

Cheers!

astro_nutt · #9 25-05-2006, 04:49 PM

Hi astrofiend, a friend of mine has a 12"LB and I can verify it does the job very well. But like the others, when properly collimated and using quality ep's under good skies, you just enjoy the views!!!

astrogeek (Leon) · #10 25-05-2006, 05:53 PM

Quote:

Originally Posted by astro_nutt

Hi astrofiend, a friend of mine has a 12"LB and I can verify it does the job very well. But like the others, when properly collimated and using quality ep's under good skies, you just enjoy the views!!!

Well I am the friend with the 12" deluxe lightbridge and I must say the optics are excellent, top class when you consider the price. The images that this scope can produce are amazing, and 9 nights out of 10 (Probably more) you wont tell the difference between a mass produced mirror (ie. GSO) or a premium mirror. As was stated before, there are a lot of people here that are doing first class imaging with GSO mirrors. This just goes to show how good mass produced mirrors have become. On the other side of things, ie. everything else in/on the lightbridge, it is a very good scope. Build quality is good, crayford is very nice and the scope looks damn sexy too

. I am even impressed with the 2" 26mm Meade QX ep which performs quite well even in this f/5 scope. The scope also packs down nice and small in it's original box and with some ingenuity could probably be made to fit in a smaller box. There are a few little anoyances like the tension brake which is useless and will scratch the alt bearings, the deluxe red dot finder which is too bright even in Melbourne, 6 truss design necessitating rings in a shroud (Not really issue) and slight balancing issues (With 2" Barlow and 2" ep the scope heads south). Really these are very minor issues that can be quickly fixed. Well I've gone a bit off the "how are the optics" topic but I hope it has helped in some way. I think you will be impressed with this scope

Leon

gaa_ian (Ian) · #11 25-05-2006, 07:00 PM

I'm with Houghy, I want a 16" Lightbridge.
I have it on good Authority that we will see one before the end of the year.
BRING IT ON !!!!

astro_nutt · #12 26-05-2006, 09:29 AM

Quote:

Originally Posted by astrogeek

Well I am the friend with the 12" deluxe lightbridge and I must say the optics are excellent, top class when you consider the price. The images that this scope can produce are amazing, and 9 nights out of 10 (Probably more) you wont tell the difference between a mass produced mirror (ie. GSO) or a premium mirror. As was stated before, there are a lot of people here that are doing first class imaging with GSO mirrors. This just goes to show how good mass produced mirrors have become. On the other side of things, ie. everything else in/on the lightbridge, it is a very good scope. Build quality is good, crayford is very nice and the scope looks damn sexy too

. I am even impressed with the 2" 26mm Meade QX ep which performs quite well even in this f/5 scope. The scope also packs down nice and small in it's original box and with some ingenuity could probably be made to fit in a smaller box. There are a few little anoyances like the tension brake which is useless and will scratch the alt bearings, the deluxe red dot finder which is too bright even in Melbourne, 6 truss design necessitating rings in a shroud (Not really issue) and slight balancing issues (With 2" Barlow and 2" ep the scope heads south). Really these are very minor issues that can be quickly fixed. Well I've gone a bit off the "how are the optics" topic but I hope it has helped in some way. I think you will be impressed with this scope

Leon

Hear, hear!! astrogeek!!

spacezebra (Petra) · #13 26-05-2006, 06:59 PM

Hi all

Its a great performing scope - as I had said on previous posts. Images are clear and sharp, a little tweeking on collimation, getting the accessories that suit you and its away you go.

Cheers Petra

Blue Skies (Jacquie) · #14 27-05-2006, 12:39 AM

Quote:

Originally Posted by gaa_ian

I'm with Houghy, I want a 16" Lightbridge.
I have it on good Authority that we will see one before the end of the year.
BRING IT ON !!!!

Really? I had it on good Authority that the 16" was nothing but rumour. But I wish it were true.

Satchmo · #15 27-05-2006, 10:00 AM

Quote:

Originally Posted by astrogeek

The images that this scope can produce are amazing, and 9 nights out of 10 (Probably more) you wont tell the difference between a mass produced mirror (ie. GSO) or a premium mirror.

Leon

This is a pretty strong and confident statement. On the basis, I assume , that you have done at least 10 night observing, at high power with your scope side by side with a similar scope with *premium *mirror?

Mark

mick pinner · #16 27-05-2006, 11:53 AM

good point Mark, but the overriding line seems to be good product for the money, which if you think along those lines means the cheaper the price the better the mirror?

Satchmo · #17 27-05-2006, 12:45 PM

Quote:

Originally Posted by mick pinner

good point Mark, but the overriding line seems to be good product for the money, which if you think along those lines means the cheaper the price the better the mirror?

Mick, `Good product for the money' and absolute quality are different issues. I questioned the assertion that most observers ( beginners?) won't tell the difference between a mass produced and premium mirror on most nights. Where did this come from? Not sure what you mean by `cheaper the price the better the mirror'.

Mark

mick pinner · #18 27-05-2006, 02:50 PM

it was a tongue in cheek joke, sorry my point was missed.

mickoking · #19 27-05-2006, 03:07 PM

I have a GSO 300mm Dob and its optics IMHO are very good regardless of price. I once owned a pricey 350mm truss tube Dob with a hand figured mirror and the GSO mirror is at least as good as that.

Collomate regularly and as astronut rightly pointed out, Just enjoy your scope.

Satchmo · #20 27-05-2006, 06:22 PM

Quote:

Originally Posted by mickoking

I have a GSO 300mm Dob and its optics IMHO are very good regardless of price. I once owned a pricey 350mm truss tube Dob with a hand figured mirror and the GSO mirror is at least as good as that.

Who `hand-figured' your mirror ?

Mark