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Question on 6" Achros you enjoy using....   Message List  
Reply | Forward Message #29791 of 30168 |
Re: Question on 6" Achros you enjoy using....

--- In Refractors@yahoogroups.com, Warp <warpcorp@...> wrote:
>
> In the 6" refractor category... the upcoming 6" Explore Scientific will
probably be the best bang for the buck.  The 6" Celestron, Meade and Skywatcher
are all pretty close in performance depending on what quality of objective you
get on any given day.  All of these three will have considerable color on
brighter objects.

Is the upcoming 6" f/6 Explore Scientific a cheap achromat or triplet?
I guess the achromats work well for emission and planetary nebula that emit
mostly in OIII but then again a 8" f/5 Newtonian will do as well.

Don
Tue Jul 14, 2009 7:56 pm

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glasspusher2001
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Forward 		Message #29791 of 30168 |
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In the 6" refractor category... the upcoming 6" Explore Scientific will probably be the best bang for the buck.  The 6" Celestron, Meade and Skywatcher are...
Warp
warpedcorp
Offline Send Email 		Jul 14, 2009
5:45 pm

... Is the upcoming 6" f/6 Explore Scientific a cheap achromat or triplet? I guess the achromats work well for emission and planetary nebula that emit mostly...
glasspusher2001
Offline Send Email 		Jul 14, 2009
7:56 pm

Don It's like the Antares 6" f/6.5 achro. So I wouldn't call in cheap, but more like a lot of scope for the money. My former Antares was a good all-around...
Karl
galaxyman4565
Offline Send Email 		Jul 15, 2009
5:03 pm

... I would say that is a good scope for 40x sweeping if its like the Antares. But why another rebranded scope is the question. No, its not cheap at $699 but...
glasspusher2001
Offline Send Email 		Jul 15, 2009
5:32 pm

Actually Don, I could use my 6" Antares up to 300x to resolve tight globs, small planetaries, and galaxies. Even Saturn looked very fine at 300x with this...
Karl
galaxyman4565
Offline Send Email 		Jul 15, 2009
6:36 pm

I know this is for you but my favorite 6" isn't on your list. I have a strong bias towards long focal length refractors. For the most part I haven't liked the...
Siegfried
ziggy943
Offline Send Email 		Jul 15, 2009
6:53 pm

... I have to agree the view through longer refractors can be very good on the planets, although the 6" f/20 ish achromat I am thinking of was made by Zeiss...
glasspusher2001
Offline Send Email 		Jul 15, 2009
10:19 pm

I have a strong bias towards long focal length refractors. For the most part I haven't liked the views through large fast refractors of the planets and Moon....
vahe352
Offline Send Email 		Jul 15, 2009
10:55 pm

... There is a difference, and understanding why just takes a little common sense. The more you bend light the more of a mess you've created. That "mess" has...
mrgrytt
Offline Send Email 		Jul 16, 2009
5:07 am

... It never gets straightened out. You can take a boat through a body of water very slowly and hardly create a ripple in the surface, or you can plow through...
Bud Starison
starbuddy84
Offline Send Email 		Jul 16, 2009
1:52 pm

Vahe, At least part of the reason is the depth of field of the longer scopes. The images just sit there and are easy to look at. You are not fiddling with the...
Siegfried
ziggy943
Offline Send Email 		Jul 16, 2009
4:13 pm

Vahe: I think the same way, probably because I am an old timer that started with long focal length refractors from 2.4" to 6" with native focal ratios from 15...
Eric Roel
eroelmx
Offline Send Email 		Jul 16, 2009
4:31 pm

Vahe, Me too. I have not been impressed with the high power views provided by the 6" f/8 achromats I have seen. Clear skies, Alan...
Alan French
alandfrench
Offline Send Email 		Jul 16, 2009
8:50 pm

Changing gears here for a moment...the 6" Achro thread has to be the longest thread I have ever read on these boards. My 2¢ Chuck/divenuts ... From: Siegfried...
Divenuts
pins4fins
Offline Send Email 		Jul 16, 2009
8:37 pm

... Chuck, you just made it even longer. ;^) Bud...
Bud Starison
starbuddy84
Offline Send Email 		Jul 16, 2009
9:47 pm

Of course some are better than others. My Astrozap 6" f/8 did give a very good view of Saturn at 350x to 400x this past Winter. Certainly better than a couple...
Sheree Krasley
galaxyman4565
Offline Send Email 		Jul 17, 2009
4:21 am

... Were you seeing Saturn as a blob or with multiples in the dobs? Try comparing optics of equal quality. A well collimated 8" f/6 dob properly cooled and...
glasspusher2001
Offline Send Email 		Jul 17, 2009
5:09 pm

... Don, that's because next year they want to sell you an Apo after you are convinced that 8" dobs are no good! ;^) Bud...
Bud Starison
starbuddy84
Offline Send Email 		Jul 17, 2009
5:50 pm

Hi Don The view in the 6" achro was very clear, seeing subtle detail on the disc including the shadow of the ring. The dobs are two fine scopes, and should be...
Karl
galaxyman4565
Offline Send Email 		Jul 17, 2009
7:08 pm

How much detail can your 6"-8" achros show on Jupiter? Can it beat this image from a 16" dob: ...
glasspusher2001
Offline Send Email 		Jul 20, 2009
8:35 pm

... Is this supposed to be some sort of joke, Don? Bud...
Bud Starison
starbuddy84
Offline Send Email 		Jul 20, 2009
8:56 pm

... Why do you say that? The Chinese achromats I've used have not shown a better image, which is a fair litmus test IMHO. Bear in mind the low altitude of...
glasspusher2001
Offline Send Email 		Jul 20, 2009
9:23 pm

I can't get the link to work......
Mark Lancaster
mslancas
Offline Send Email 		Jul 20, 2009
9:41 pm

... I'm confused (don't mind me,I was born that way): the Chinese 6" achros have not shown a better image than a 16" newtonian? Is that a criticism? ;^) I...
Bud Starison
starbuddy84
Offline Send Email 		Jul 20, 2009
9:56 pm

... I choice this image for a comparison because it represents what one might see during the current opposition; stand back and tell me if that represents your...
glasspusher2001
Offline Send Email 		Jul 20, 2009
10:28 pm

Yeah, and you need to make a "tiny url" out of such long URLs that are completely useless!  Note all those spaces that Yahoo just loves to put in those! Guess...
Perry Holcomb
hpholcomb
Offline Send Email 		Jul 20, 2009
11:42 pm

here is the source of the image: http://www.astrobuysell.com/image.php?Id=13644 I'm sure you can get much better views in the Florida Keys but up here thats...
glasspusher2001
Offline Send Email 		Jul 21, 2009
3:19 am

Thanks for the link!...
Mark Lancaster
mslancas
Offline Send Email 		Jul 21, 2009
4:15 am

Hi Don My 6" f/8 this past Saturday night showed Jupiter at 300x fairly well, though I only took a brief look. The belts showed some nice detail, and though...
Karl
galaxyman4565
Offline Send Email 		Jul 21, 2009
4:41 am

... Karl: Which F8 Achro refractor provided such great resolution viewing that Nebula? I've looked through a Celestron 6" F8 and the views of Saturn (with a...
George
saarmason
Offline Send Email 		Jul 21, 2009
3:25 pm
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