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Starwave 102ED f11 (yes, ED)

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#526 ris242

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Posted 27 August 2019 - 01:59 PM

Instead of buying a pillar extension, consider getting a second scope. laugh.gif

 

[in this position the refractor is the heavier side.....its sitting too far out.....but this is the maximum length of the single rod without extension]

 

pillar1.jpg

 

pillar2.jpg


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#527 Binofrac

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Posted 28 August 2019 - 01:03 PM

With this long focal length, is it really worth paying a lot for eyepieces? I generally use the BST Starguider range in my F11 achro which seem to me pretty good and would show a better view in this ED scope (I'm tempted, oh so tempted). I've no experience of much else eyepiece wise. For those who have this scope what eyepieces do you think give the sharpest, most contrasting view? I'm not concerned for the moment about field of view or eye relief.


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#528 jag767

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Posted 28 August 2019 - 01:06 PM

With this long focal length, is it really worth paying a lot for eyepieces? I generally use the BST Starguider range in my F11 achro which seem to me pretty good and would show a better view in this ED scope (I'm tempted, oh so tempted). I've no experience of much else eyepiece wise. For those who have this scope what eyepieces do you think give the sharpest, most contrasting view? I'm not concerned for the moment about field of view or eye relief.

my es 82s are tack sharp in mine, as is my 40mm 68°. At f11 its going to be quite forgiving.
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#529 ris242

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Posted 28 August 2019 - 01:22 PM

My 22mm panoptic gives the best view.



#530 Astrojensen

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Posted 28 August 2019 - 02:04 PM

I've used all kinds of eyepieces in mine and everything works just fine. It's a very forgiving scope on eyepieces, as jag767 says.  

 

For the sharpest, best possible contrast views, simply get the best eyepieces you can afford. The optics in this scope are good enough to let you see the difference. I recently came across a really fine 3x barlow (probably GSO) that gives uncommonly sharp views along with my 4.7mm ES82. That's 716x and the views I had of Vega and Delta Cygni were just textbook perfect. 

 

 

Clear skies!
Thomas, Denmark


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#531 Don Taylor

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Posted 28 August 2019 - 06:14 PM

With this long focal length, is it really worth paying a lot for eyepieces? I generally use the BST Starguider range in my F11 achro which seem to me pretty good and would show a better view in this ED scope (I'm tempted, oh so tempted). I've no experience of much else eyepiece wise. For those who have this scope what eyepieces do you think give the sharpest, most contrasting view? I'm not concerned for the moment about field of view or eye relief.

Martyn:

 

I have the 102F11 Achro as well as the Starwave 102F11ED. As Thomas and Jag767 have said - this scope is very forgiving on eyepieces.

 

I have not tested all my (45+) eyepieces in the 102F11ED but - eyepieces I like in the Achro I like just as well in the ED.  None of my eyepieces are poor performers in this scope (so far).

 

Favorites?  Well - all the ES68 and ES82 are great, as are the TV Naglers, Plossls, and Radian.  But (perhaps strangely) I like the BST Flat Field eyepieces as they are very comfortable, and if I'm looking for fine details on the Moon I use the Fujiyama Orthos.

 

My advice?  - Enjoy your Starguiders! 


Edited by Don Taylor, 28 August 2019 - 06:18 PM.

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#532 jag767

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Posted 28 August 2019 - 06:30 PM

Out of curiousity, anyone have the ability to have a shootout with this ota, something like a tak 100mm, and/or a skywatcher 120ed doublet? I'm inclined to believe this will hang with a premium optics its size, and be closer than expected next to a 120ed.

#533 Binofrac

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Posted 28 August 2019 - 06:36 PM

Thanks for your advice everyone. My question was prompted by a hole in my eyepiece collection between 8 and 18mm. There is a BST 12mm but I fancied trying something different. I'm at an astronomy festival at the weekend and so will look carefully at the ES range.

 

Don,

As you have both scopes have you done a side by side comparison of the views? I'd be interested to know how they compare. Is it night and day or just slightly better for the ED?


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#534 Don Taylor

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Posted 28 August 2019 - 06:46 PM

Thanks for your advice everyone. My question was prompted by a hole in my eyepiece collection between 8 and 18mm. There is a BST 12mm but I fancied trying something different. I'm at an astronomy festival at the weekend and so will look carefully at the ES range.

 

Don,

As you have both scopes have you done a side by side comparison of the views? I'd be interested to know how they compare. Is it night and day or just slightly better for the ED?

No - not yet. I do have enough suitable mounts and accessories to do so. Just have not taken the time.  I like the Achro very much but I must admit that I have't used it since the ED arrived.

 

It's  Holiday weekend here in the US - I might have an opportunity to do a comparison.


Edited by Don Taylor, 28 August 2019 - 06:47 PM.

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#535 GlenM

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Posted 29 August 2019 - 09:07 AM

I always used Orthoscopics when testing the Achro f/11,s. I've still not tried the ED version.

 

Glen.



#536 MalVeauX

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Posted 30 August 2019 - 02:32 PM

Any comparisons of the 102mm F11 ED to something like a 102mm F7 ED/APO with respect to color correction? I'm curious how this scope would compare to something like the Stellarvue 102mm F7 for example.

 

Very best,



#537 jag767

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Posted 30 August 2019 - 07:22 PM

Any comparisons of the 102mm F11 ED to something like a 102mm F7 ED/APO with respect to color correction? I'm curious how this scope would compare to something like the Stellarvue 102mm F7 for example.

Very best,


Only thing I could add is right before this I had an astrotech 106 which is a 106mm f6 fpl53 triplet for those who aren't familiar. Although I cannot compare them directly, I can say I don't feel like I lost anything in the view at all.
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#538 seafury

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Posted 02 September 2019 - 01:40 AM

thumbnail_IMG_0433.jpg Hi getting dangerously near the open air, the Lyra complete with ED objective and the original Kumming focuser, please excuse the mess.

 

 

cheers Gordon


Edited by seafury, 02 September 2019 - 01:41 AM.

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#539 ris242

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Posted 02 September 2019 - 01:45 AM

what mess?



#540 seafury

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Posted 02 September 2019 - 02:28 AM

what mess?

I just hope my wife doesn't find out I posted a photo with those few books etc lying around,I shall be straight in for retraining on my housework skills :)


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#541 jag767

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Posted 02 September 2019 - 06:45 AM

Just picked up a skywatcher 9mm 120° eyepiece in the classifieds to try out in mine. They seem to have been reviewed pretty positively by people even at f5, so at f11 I'd wager it will be phenomenal. Sky conditions here are generally not great, not too often I can push beyond that magnification anyhow, so its kind of ideal.
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#542 GlenM

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Posted 02 September 2019 - 07:07 AM

attachicon.gif thumbnail_IMG_0433.jpgHi getting dangerously near the open air, the Lyra complete with ED objective and the original Kumming focuser, please excuse the mess.

 

 

cheers Gordon

Looking good, Gordon.

 

Glen.



#543 Binofrac

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Posted 02 September 2019 - 10:00 AM

attachicon.gif thumbnail_IMG_0433.jpgHi getting dangerously near the open air, the Lyra complete with ED objective and the original Kumming focuser, please excuse the mess.

 

 

cheers Gordon

F11 102mm ED with a rotating focuser. Who could want for more? The search for the ED lens cell only to retrofit my achro has so far proved fruitless.



#544 Astrojensen

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Posted 02 September 2019 - 11:04 AM

F11 102mm ED with a rotating focuser. Who could want for more? The search for the ED lens cell only to retrofit my achro has so far proved fruitless.

Give it a little time. It usually takes a while, after a new far-east telescope has been introduced, before the lens cell becomes available. 

 

Eventually used scopes will also become available at a reduced price (presumably!). Unless, of course, that these scopes turn out to be so good and so popular, that few wants to part with them and second hand prices will be high. There's actually a real chance of that, based on owner's reports. I have absolutely zero intent of ever parting with mine. A 4" scope that delivers textbook sharp airy disk images at 716x is not one you should let go easily. 

 

 

Clear skies!
Thomas, Denmark


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#545 Binofrac

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Posted 02 September 2019 - 01:46 PM

Give it a little time. It usually takes a while, after a new far-east telescope has been introduced, before the lens cell becomes available. 

 

Eventually used scopes will also become available at a reduced price (presumably!). Unless, of course, that these scopes turn out to be so good and so popular, that few wants to part with them and second hand prices will be high. There's actually a real chance of that, based on owner's reports. I have absolutely zero intent of ever parting with mine. A 4" scope that delivers textbook sharp airy disk images at 716x is not one you should let go easily. 

 

 

Clear skies!
Thomas, Denmark

With a bit of luck the range may be refreshed after a year or two and the rotating focuser may return. It will take a couple of years for me to part with the cash.


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#546 seafury

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Posted 02 September 2019 - 03:05 PM

Hi,  "A 4" scope that delivers textbook sharp airy disk images at 716x is not one you should let go easily." that is until some idiot goes fiddling with it :)

 

cheers Gordon (idiot)


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#547 Astrojensen

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Posted 02 September 2019 - 03:15 PM

Hi,  "A 4" scope that delivers textbook sharp airy disk images at 716x is not one you should let go easily." that is until some idiot goes fiddling with it smile.gif

 

cheers Gordon (idiot)

Well, this particular idiot has previously rescued and collimated a WO 72mm f/6 ED that another idiot had fiddled with... wink.gif  Recollimating a 4" f/11 doesn't faze me at all. 

 

There is nothing more dangerous to a telescope than an overzealous amateur astronomer with a screwdriver and more enthusiasm than knowledge. 

 

Which is probably why the makers of the 4" f/11 ED found it prudent to seal the objective retaining ring with laquer... I'll let you guess how I know. whistling.gif

 

 

Clear skies!
Thomas, Denmark


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#548 seafury

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Posted 03 September 2019 - 12:15 AM

"There is nothing more dangerous to a telescope than an overzealous amateur astronomer with a screwdriver and more enthusiasm than knowledge."

 

you know me so well :)


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#549 Binofrac

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Posted 03 September 2019 - 03:26 AM

Well, this particular idiot has previously rescued and collimated a WO 72mm f/6 ED that another idiot had fiddled with... wink.gif  Recollimating a 4" f/11 doesn't faze me at all. 

 

There is nothing more dangerous to a telescope than an overzealous amateur astronomer with a screwdriver and more enthusiasm than knowledge. 

 

Which is probably why the makers of the 4" f/11 ED found it prudent to seal the objective retaining ring with laquer... I'll let you guess how I know. whistling.gif

 

 

Clear skies!
Thomas, Denmark

Those makers didn't account for freely available acetone (yes I've done it too).


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#550 Don Taylor

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Posted 03 September 2019 - 06:30 PM

Those makers didn't account for freely available acetone (yes I've done it too).

 

 

Well, this particular idiot has previously rescued and collimated a WO 72mm f/6 ED that another idiot had fiddled with... wink.gif  Recollimating a 4" f/11 doesn't faze me at all. 

 

There is nothing more dangerous to a telescope than an overzealous amateur astronomer with a screwdriver and more enthusiasm than knowledge. 

 

Which is probably why the makers of the 4" f/11 ED found it prudent to seal the objective retaining ring with laquer... I'll let you guess how I know. whistling.gif

 

 

Clear skies!
Thomas, Denmark

 

Oh - we all all so much alike...............waytogo.gif


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