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Science Forum Index » Astro - Amateur Forum » Meade's new triplet 80APO
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| Protagonist |
 Posted: Sun Feb 04, 2007 3:18 pm |
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Any one using Meade's new 80mm Triplet APO?
Any good?
https://www.astromart.com/articles/article.asp?article_id=534
I'm considering to buy it.
Use to own a Pronto few years ago and I miss it.
Pronto's ED doublet was OK, but showed lot of falls color on Mars.
I have a 4" Mak since, but it's not a retractor, no wide field etc...
Also, have a C102F, but it's too bulky for daytime use or travel.
JS |
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| RMOLLISE |
| Posted: Sun Feb 04, 2007 3:36 pm |
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On Feb 4, 1:18 pm, Protagonist <szak...@comcast.net> wrote:
Quote: Any one using Meade's new 80mm Triplet APO?
Any good?https://www.astromart.com/articles/article.asp?article_id=534
I'm considering to buy it.
Use to own a Pronto few years ago and I miss it.
Pronto's ED doublet was OK, but showed lot of falls color on Mars.
I have a 4" Mak since, but it's not a retractor, no wide field etc...
Also, have a C102F, but it's too bulky for daytime use or travel.
JS
Hi:
I haven't seen one yet, but from what I've been told, the Astromart
article does a good job of summing up the situation. Good value, good
optics. I think I'd prefer the William Optics 80 due to the focuser
and the odd Meade L bracket arrangement.
Unk Rod |
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| Protagonist |
| Posted: Sun Feb 04, 2007 3:51 pm |
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RMOLLISE wrote:
Quote: On Feb 4, 1:18 pm, Protagonist <szak...@comcast.net> wrote:
Any one using Meade's new 80mm Triplet APO?
Any good?https://www.astromart.com/articles/article.asp?article_id=534
I'm considering to buy it.
Use to own a Pronto few years ago and I miss it.
Pronto's ED doublet was OK, but showed lot of falls color on Mars.
I have a 4" Mak since, but it's not a retractor, no wide field etc...
Also, have a C102F, but it's too bulky for daytime use or travel.
JS
Hi:
I haven't seen one yet, but from what I've been told, the Astromart
article does a good job of summing up the situation. Good value, good
optics. I think I'd prefer the William Optics 80 due to the focuser
and the odd Meade L bracket arrangement.
Unk Rod
Review of William Optics ZenithStar 80mm Fluorite Doublet Refractor OTA
http://www.telescopes.com/reviews/products.php?id=42778
Ouch!!! "only sirius and vega shows purple spikes"
Quote: 4. Luis Gutiérrez , Mexico City : 12/28/2006 12:03:36
It arrives collimated, very good fit and finish, nice color, in
focus....... color correction is excelent only sirius and vega shows
purple spikes, for planets and double stars in average seeing conditions
outperform my Nexstar 8 GPS. Pushed to 156 X any time without any
problem. A great value for the money.<< |
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| Protagonist |
| Posted: Sun Feb 04, 2007 4:03 pm |
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RMOLLISE wrote:
Quote: On Feb 4, 1:18 pm, Protagonist <szak...@comcast.net> wrote:
Any one using Meade's new 80mm Triplet APO?
Any good?https://www.astromart.com/articles/article.asp?article_id=534
I'm considering to buy it.
Use to own a Pronto few years ago and I miss it.
Pronto's ED doublet was OK, but showed lot of falls color on Mars.
I have a 4" Mak since, but it's not a retractor, no wide field etc...
Also, have a C102F, but it's too bulky for daytime use or travel.
JS
Hi:
I haven't seen one yet, but from what I've been told, the Astromart
article does a good job of summing up the situation. Good value, good
optics. I think I'd prefer the William Optics 80 due to the focuser
and the odd Meade L bracket arrangement.
Unk Rod
Fluorite optics here, ED doublet there, no matter what, at f/6-F/7 a
doublet will show some color on bright objects.
My C102F is a Fluorite doublet, no color on any objects in focus, but
than it is a f/9 retractor.
Meade 127 ED triplet for $1899 maybe a very sweet deal!
I wonder what Celestron is up to, to match these new line of Meade
retractors?
How about a 6" ED triplet APO for less than $3000, run-run ASTRO-PHYSICS!
JS |
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| Guest |
| Posted: Sun Feb 04, 2007 6:03 pm |
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On Feb 4, 1:36 pm, "RMOLLISE" <rmoll...@hotmail.com> wrote:
Quote: On Feb 4, 1:18 pm, Protagonist <szak...@comcast.net> wrote:
Any one using Meade's new 80mm Triplet APO?
Any good?https://www.astromart.com/articles/article.asp?article_id=534
I'm considering to buy it.
Use to own a Pronto few years ago and I miss it.
Pronto's ED doublet was OK, but showed lot of falls color on Mars.
I have a 4" Mak since, but it's not a retractor, no wide field etc...
Also, have a C102F, but it's too bulky for daytime use or travel.
JS
Hi:
I haven't seen one yet, but from what I've been told, the Astromart
article does a good job of summing up the situation. Good value, good
optics. I think I'd prefer the William Optics 80 due to the focuser
and the odd Meade L bracket arrangement.
Unk Rod
Maybe we finally have a good "APO" 80mm refractor worht buying |
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| Anthony Ayiomamitis |
| Posted: Sun Feb 04, 2007 6:35 pm |
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Protagonist wrote:
Quote: RMOLLISE wrote:
How about a 6" ED triplet APO for less than $3000, run-run ASTRO-PHYSICS!
Hehehe, yeah right! Let me know when ANY offering from Celestron or
Meade will match an AP160. ;-)
Anthony.
> JS |
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| Jan Owen |
| Posted: Sun Feb 04, 2007 6:53 pm |
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"Anthony Ayiomamitis" <anthony@perseus.no2spam.gr> wrote in message
news:eq5n3o$2qt$1@mouse.otenet.gr...
Quote: Protagonist wrote:
RMOLLISE wrote:
How about a 6" ED triplet APO for less than $3000, run-run ASTRO-PHYSICS!
Hehehe, yeah right! Let me know when ANY offering from Celestron or Meade
will match an AP160. ;-)
Anthony.
JS
I don't think that's exactly what Rod said or implied...
--
Jan Owen
To reach me directly, remove the Z, if one appears in my e-mail address...
Latitude: 33.6
Longitude: -112.3
http://community.webshots.com/user/janowen21 |
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| Anthony Ayiomamitis |
| Posted: Sun Feb 04, 2007 9:18 pm |
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Jan Owen wrote:
Quote: "Anthony Ayiomamitis" <anthony@perseus.no2spam.gr> wrote in message
news:eq5n3o$2qt$1@mouse.otenet.gr...
Protagonist wrote:
RMOLLISE wrote:
How about a 6" ED triplet APO for less than $3000, run-run ASTRO-PHYSICS!
Hehehe, yeah right! Let me know when ANY offering from Celestron or Meade
will match an AP160. ;-)
Anthony.
JS
Hi Jan,
Quote:
I don't think that's exactly what Rod said or implied...
I have no problem with Rod's comments. It is the other fellow
("protagonist") who made a very optimistic comment. Perhaps I did not
properly snip the original message.
Anthony. |
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| Jan Owen |
| Posted: Sun Feb 04, 2007 9:53 pm |
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"Anthony Ayiomamitis" <anthony@perseus.no2spam.gr> wrote in message
news:eq60mt$6tg$1@mouse.otenet.gr...
Quote: Jan Owen wrote:
"Anthony Ayiomamitis" <anthony@perseus.no2spam.gr> wrote in message
news:eq5n3o$2qt$1@mouse.otenet.gr...
Protagonist wrote:
RMOLLISE wrote:
How about a 6" ED triplet APO for less than $3000, run-run
ASTRO-PHYSICS!
Hehehe, yeah right! Let me know when ANY offering from Celestron or Meade
will match an AP160. ;-)
Anthony.
JS
Hi Jan,
I don't think that's exactly what Rod said or implied...
I have no problem with Rod's comments. It is the other fellow
("protagonist") who made a very optimistic comment. Perhaps I did not
properly snip the original message.
Anthony.
Hi, Anthony,
It's hard to tell sometimes... Protagonist's been in my killfile for some
time, so only Rod's message, followed by yours, with it's twin attributions
appears, and it's not very clear who said what to whom... Since I read
Rod's message, and those words weren't IN Rod's message, I should have been
more aware of their source... My bad... Sorry about that!!!
My only point in this anyway, is that we know NOTHING about these Meade
units... There's no doubt in MY mind that they will not compete directly on
a quality basis with AP, TMB, TEC, or Tak, because that's not what they're
designed to do...
But they MAY (or may not - remains to be seen) compete well in another
niche, based on good performance for a low price... They aren't likely to
put up images that will EQUAL those other scopes, but they could be close,
and close with a low price tag will put them into the game... And may make
quality images available to folks who can't afford them now... That, if it
happens, could be a GOOD thing... Only time will tell...
Take care!!!
--
Jan Owen
To reach me directly, remove the Z, if one appears in my e-mail address...
Latitude: 33.6
Longitude: -112.3
http://community.webshots.com/user/janowen21 |
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| Protagonist |
| Posted: Sun Feb 04, 2007 10:57 pm |
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Anthony Ayiomamitis wrote:
Quote: Protagonist wrote:
RMOLLISE wrote:
How about a 6" ED triplet APO for less than $3000, run-run ASTRO-PHYSICS!
Hehehe, yeah right! Let me know when ANY offering from Celestron or
Meade will match an AP160. ;-)
Anthony.
JS
Match any time, since don't have to wait for 5 years for Da big scope
or go bankrupt.
Ready to use!
JS |
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| Ed T |
| Posted: Sun Feb 04, 2007 11:02 pm |
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Quote: Fluorite optics here, ED doublet there, no matter what, at f/6-F/7 a
doublet will show some color on bright objects.
My C102F is a Fluorite doublet, no color on any objects in focus, but than
it is a f/9 retractor.
Color correction is a function of aperture as well as focal length. An 80mm
f7 ED doublet might meet or exceed the color correction of an 100 mm f9 ED
doublet.
Ed T. |
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| Protagonist |
| Posted: Sun Feb 04, 2007 11:49 pm |
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Ed T wrote:
Quote: Fluorite optics here, ED doublet there, no matter what, at f/6-F/7 a
doublet will show some color on bright objects.
My C102F is a Fluorite doublet, no color on any objects in focus, but than
it is a f/9 retractor.
Color correction is a function of aperture as well as focal length. An 80mm
f7 ED doublet might meet or exceed the color correction of an 100 mm f9 ED
doublet.
Ed T.
TV Pronto is an ED doublet, on high powers it does show color on bright
objects when I used it day time taking pictures.
But than, it's also the function of magnification.
A standard chromate, may not show color at low powers and lot of people
happy with with performance.
Observing Mars with a small scope 3-4", needs high power and most fast
/f doublets show color.
JS |
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| Rich |
| Posted: Mon Feb 05, 2007 1:45 am |
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On Feb 4, 2:18 pm, Protagonist <szak...@comcast.net> wrote:
Quote: Any one using Meade's new 80mm Triplet APO?
Any good?https://www.astromart.com/articles/article.asp?article_id=534
I'm considering to buy it.
Use to own a Pronto few years ago and I miss it.
Pronto's ED doublet was OK, but showed lot of falls color on Mars.
I have a 4" Mak since, but it's not a retractor, no wide field etc...
Also, have a C102F, but it's too bulky for daytime use or travel.
JS
I think you are liable to get a more accurate objective in these
inexpensive ED/apos if you stick with 2 elements instead of three.
Nowadays, the gains in colour control going from FPL-53 doublets to
triplets are minor, but the chances of getting three good elements
instead of just two are not as good. A test I read some time ago
implied that colour control was better in a 3 element Williams Optic
scope but that star images were more accurate in a 2 element ED
units. It's unlikely either will be "bad" but it does question
whether spending the extra for a triplet is really worth it. |
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| Anthony Ayiomamitis |
| Posted: Mon Feb 05, 2007 5:38 am |
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Protagonist wrote:
Quote: Anthony Ayiomamitis wrote:
Protagonist wrote:
RMOLLISE wrote:
How about a 6" ED triplet APO for less than $3000, run-run
ASTRO-PHYSICS!
Hehehe, yeah right! Let me know when ANY offering from Celestron or
Meade will match an AP160. ;-)
Anthony.
JS
Match any time, since don't have to wait for 5 years for Da big scope
or go bankrupt.
It is one issue having a scope immediately available vs waiting "5
years" (it is actually more) and something else to have the same quality
for $3000. Unless I am mistaken, the coatings alone on the AP scopes
cost $2000.
Ready to use is a different issue .... in fact you can pick up a 6"
refractor ready to use right now anyway. :-)
Anthony.
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| Protagonist |
| Posted: Mon Feb 05, 2007 5:59 am |
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Rich wrote:
Quote: On Feb 4, 2:18 pm, Protagonist <szak...@comcast.net> wrote:
Any one using Meade's new 80mm Triplet APO?
Any good?https://www.astromart.com/articles/article.asp?article_id=534
I'm considering to buy it.
Use to own a Pronto few years ago and I miss it.
Pronto's ED doublet was OK, but showed lot of falls color on Mars.
I have a 4" Mak since, but it's not a retractor, no wide field etc...
Also, have a C102F, but it's too bulky for daytime use or travel.
JS
I think you are liable to get a more accurate objective in these
inexpensive ED/apos if you stick with 2 elements instead of three.
Nowadays, the gains in colour control going from FPL-53 doublets to
triplets are minor, but the chances of getting three good elements
instead of just two are not as good. A test I read some time ago
implied that colour control was better in a 3 element Williams Optic
scope but that star images were more accurate in a 2 element ED
units. It's unlikely either will be "bad" but it does question
whether spending the extra for a triplet is really worth it.
Time will tell!
Ginni is out of the bottle again as better color corrected APOs at lower
cost are hitting the market. Triplets were all ways pricey and made by
top brand manufacturers in the past.
For cost of $590 getting a triplet fast 80mm APO is very tempting.
I remember 5-6 years ago I was looking at APM-s 80 mm triplet APO optics
set, cost some $1500 and that's only the lens set in the cell.
JS |
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