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Equipment Discussions >> Refractors

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Napersky
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AP 6" Superplanetary on AstroMart
      #5585289 - 12/23/12 09:51 AM

This is the best amateur refractor I have looked thru. Now what that does is exclude all large refractors over 6" since 6" is the largest I have been able to use.

Nothwithstanding the aperture limitation this scope presented outstanding views of the disc of Neptune with some detail. I have not seen any reflector, SCT including our Chicago Astronomical Society's 14 MEADE LX200 on a Paramount ME produce views anywhere close to this wonderful scope.

It's long focal length f12 truly makes it a SUPER PLANETARY INTRUSMENT.

Mark

I am not the seller and wish I could buy it!

http://www.ebay.com/itm/Astrophysics-6-f12-Superplanetary-refractor-Losmandy-...


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The Ardent
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Re: AP 6" Superplanetary on AstroMart new [Re: Napersky]
      #5585526 - 12/23/12 12:33 PM

Your title says Astromart but the link is *bay



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Jim7728
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Re: AP 6" Superplanetary on AstroMart new [Re: The Ardent]
      #5585534 - 12/23/12 12:42 PM

Apparently, there are two for sale. Different sellers.

http://www.astromart.com/classifieds/details.asp?classified_id=804516


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Cotts
Just Wondering
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Re: AP 6" Superplanetary on AstroMart new [Re: Napersky]
      #5585712 - 12/23/12 02:27 PM

The eBay scope is on sale from Hands On Optics so a reputable dealer is involved.... Gary probably had it out for a spin so he could vouch for it....

I wonder how different this scope would be from my Astro-Physics 1988 6" f/8 triplet in terms of colour correction and overall optical quality.....

Dave


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ryderc1
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Re: AP 6" Superplanetary on AstroMart new [Re: Cotts]
      #5585746 - 12/23/12 02:47 PM

I owned a 5" f/12 Superplanetary which, presumably, would have slighly less color than a 6" f/12 Superplanetary. Nevertheless, I found it to be less well color corrected than an FS-128 (but considerably better corrected than a 5" f/15 D&G achro as would be expected).

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Mirzam
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Re: AP 6" Superplanetary on AstroMart new [Re: ryderc1]
      #5586027 - 12/23/12 05:50 PM

These two AP scopes hold a special interest for me. I placed an order for one in 1985. Then kid #1 was born and our family moved to a new house. Had to cancel the order. AP refunded my deposit no questions asked. The most amazing thing was when I placed another order 20 years later they still had my information in their data base! In a world with so much shoddy customer service and shoddy behavior in general, it's nice to deal with a company that has integrity. Hard to place a price on that.

JimC


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Pete-LH
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Re: AP 6" Superplanetary on AstroMart new [Re: Mirzam]
      #5586616 - 12/24/12 03:06 AM

I have the 5" AP superplanetary. I think the colour correction in focus is comparable if not equal to my FS-102. I was tempted for the 6" AP SP and also the D&G 6" f12 recently posted but had decided 5" f/12 was my limit for storage, lifting, mounting and transporting.

The views are fabulous.


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Sunspot
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Re: AP 6" Superplanetary on AstroMart new [Re: Cotts]
      #5586867 - 12/24/12 09:32 AM

I saw this scope in Tucson...was VERY tempted to buy it. It looked a bit rough, but the optics looked very clean.

Quote:

The eBay scope is on sale from Hands On Optics so a reputable dealer is involved.... Gary probably had it out for a spin so he could vouch for it....

I wonder how different this scope would be from my Astro-Physics 1988 6" f/8 triplet in terms of colour correction and overall optical quality.....

Dave




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gillmj24
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Re: AP 6" Superplanetary on AstroMart new [Re: Sunspot]
      #5587582 - 12/24/12 06:08 PM

Guess the Astromart seller wont get 7k now...

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Napersky
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Re: AP 6" Superplanetary on AstroMart new [Re: gillmj24]
      #5587732 - 12/24/12 08:46 PM



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Napersky
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Re: AP 6" Superplanetary on AstroMart new [Re: Napersky]
      #5587735 - 12/24/12 08:50 PM

Dave the longer the focal length the better and easier to color correct.

The magic of the APOs is short focal length color correction. Even long focal ratio achromats are well corrected, I have many achromats good ones very little if any false color.

The best way of course to determine the quality of color correction is multi-color interferometry in the way Wolfgang Rohr does.

Mark


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Denimsky
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Reged: 01/21/07

Loc: BC, Canada
Re: AP 6" Superplanetary on AstroMart new [Re: gillmj24]
      #5587777 - 12/24/12 09:38 PM

I'm not sure how much AP800 mount is worth but the AstroMart one includes an AP 800 mount.

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Eddgie
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Re: AP 6" Superplanetary on AstroMart new [Re: Cotts]
      #5587821 - 12/24/12 10:17 PM

The 6" f/8 would I think fail even Roland Christen's definition of "APO today, though at the time it was sold, it was considered an APO (1/8000th of the focal lenght spacing).

Anyway, the 6" f/8 is not color free. The only ray trace for a similar design I have is for an 8" f/10 Christen Immersion Triplet. In this design, the red, green, and blue are well corrected, but the violet spread is very defocused (about 30mm at the focal plane). This is so diffuse that it would be difficult to see unless the star is very bright (Sirius or Vega). This is consistent with the 6" f/8. The violet is defocused over a very wide area and unless the star is very bright, you can't see it.

I am sure the correction is not as good as the Superplanetary, but it is excellent in red, green, and blue. When cooled, stars appear to be color free, but again, bright stars will show a very faint but very large diffuse violet in the field. Barely detectable even on the brightest stars.


Optical quality though I would think could not be better than in the 6" f/8. I think Mr. Christen is perhaps a compulsive type incapable of letting something go out the door that is not made to standards that border on absolute perfection.

My 6" f/8 has the best optical of any telescope I have ever star tested. Flawless. Perfect breakout on the SA test, and optics that are as smooth as I have ever seen. I don't know for the life of my how the Superplanetary could be better than this because it is optically about as perfect as one could ask for. There is no meaningful improvement to be found beyound this level of quality. It would be a meaningless decimal place change on the Strehl report.

Edited by Eddgie (12/24/12 10:21 PM)


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Napersky
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Re: AP 6" Superplanetary on AstroMart new [Re: Eddgie]
      #5587841 - 12/24/12 10:34 PM

Paul,

How much was Hands On Optics asking for the same scope that you saw in Tucson? Was it the same as the one they sold on
Ebay with the g11 mount?

Msrk


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gillmj24
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Re: AP 6" Superplanetary on AstroMart new [Re: Napersky]
      #5588185 - 12/25/12 08:18 AM

The last one on astromart tube only, sold for only 3500 IIRC. That corresponds well to 5k with a G11. A unitron guidescope and ap800 aren't worth $4000 (he is asking 7500 not 7000 my mistake) but good luck to the seller. If someone with deep pockets missed the ebay auction and decides suddenly he has to have a superplanetary (they don't come up.for sale all that often) it might sell for that. You can check feedback and see if he is flipping the 3500 dollar OTA for a Christmas bonus.

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Napersky
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Re: AP 6" Superplanetary on AstroMart new [Re: gillmj24]
      #5588209 - 12/25/12 08:57 AM

$4,500 for a pristine OTA and $3,000 for the AP Mount, it could happen. Otherwise he would have not much trouble getting prices close to those if he later sells them separately.

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Napersky
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Re: AP 6" Superplanetary on AstroMart new [Re: Napersky]
      #5588430 - 12/25/12 12:42 PM

Hands On wanted $6,500. Which could translation into $5,000 for the scope and $1,500 for the G11 mount and tripod.

This means the one on Amart would be asking $5,500 for their better condition scope and $2,000 for the AP 800 mount. A fair price.

Mark


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Napersky
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Re: AP 6" Superplanetary on AstroMart new [Re: Napersky]
      #5589452 - 12/26/12 10:39 AM

Won it!

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t.r.
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Re: AP 6" Superplanetary on AstroMart new [Re: Napersky]
      #5589734 - 12/26/12 01:14 PM

Congrats! Pics when you get it of course!

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The Ardent
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Loc: Virginia
Re: AP 6" Superplanetary on AstroMart new [Re: Napersky]
      #5589889 - 12/26/12 03:34 PM

The one on *bay or Astromart?

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Napersky
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Re: AP 6" Superplanetary on AstroMart new [Re: The Ardent]
      #5592237 - 12/28/12 07:59 AM

Ebay of course!

Hands said, "I stole it!"


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t.r.
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Re: AP 6" Superplanetary on AstroMart new [Re: Napersky]
      #5592241 - 12/28/12 08:01 AM

I like the 6" F/9 Starfire in "Cadet Blue" on the Mart. Alas, pickup only in CA.

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Darren Drake
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Re: AP 6" Superplanetary on AstroMart new [Re: t.r.]
      #5592289 - 12/28/12 08:49 AM

Guess who has to go take Napersky to pick it up at UPS?! His car is a little to small to fit but my van is in cargo mode right now and should be fine. Maybe I'll take the unpacking pics...

Edited by Darren Drake (12/28/12 09:01 AM)


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Napersky
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Re: AP 6" Superplanetary on AstroMart new [Re: Darren Drake]
      #5592361 - 12/28/12 09:51 AM

Thanks Darren....I hope to get it delievered to a close by store so we can unpack and setup right away.

Tim Blue scopes are cool. I really didn't understand the colored OTAs that SEARS used to sell but later learned that the Alvan Clarks produced their scopes in all kinds of colors.


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Napersky
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Re: AP 6" Superplanetary on AstroMart new [Re: Napersky]
      #5592463 - 12/28/12 11:04 AM

Astro-physics sold this scope with the Losmandy G11 mount in 1986 as the Superplanetary Package. Does anyone know what they charged for the package back then?

Was the Astrophysics AP1200 mount available then? Does anyone know what year the AP1200 came out?

Mark


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gillmj24
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Re: AP 6" Superplanetary on AstroMart new [Re: Napersky]
      #5592558 - 12/28/12 11:56 AM

Late 90s maybe. The GTO version came out in the early 2000s I think.

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vahe
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Reged: 08/27/05

Loc: Houston, Texas
Re: AP 6" Superplanetary on AstroMart new [Re: Napersky]
      #5592637 - 12/28/12 12:51 PM

Quote:

Astro-physics sold this scope with the Losmandy G11 mount in 1986 as the Superplanetary Package. Does anyone know what they charged for the package back then?
Was the Astrophysics AP1200 mount available then? Does anyone know what year the AP1200 came out?






G11 was introduced in 1992 and I bought one of the early models in that year ($1400), by then the F/12 superplanetary was out of production.
Astro-Physics never offered G11 with any of their scopes.
APs 1993 catalog shows both 800 mount ($2750) and the early all black 1200 mount ($4450). In the following year the 800 mount was phased out and the 1200 continued its developments up until last year.

Vahe


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Napersky
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Re: AP 6" Superplanetary on AstroMart new [Re: vahe]
      #5592668 - 12/28/12 01:08 PM

Was just told my serial # is either 61244 or 51244.
NASA glass?


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Sean Cunneen
Let Me Think
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Re: AP 6" Superplanetary on AstroMart new [Re: Napersky]
      #5592721 - 12/28/12 01:45 PM

WOW! Congrats! How about a head-to-head? I'll throw some gauze over your dew shield to even things up a bit

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Darren Drake
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Re: AP 6" Superplanetary on AstroMart new [Re: Sean Cunneen]
      #5592761 - 12/28/12 02:14 PM

Yea we're gonna put my optically excellent 8 inch f/6.9 newt up against it and se what happens...

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Napersky
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Re: AP 6" Superplanetary on AstroMart new [Re: Darren Drake]
      #5592789 - 12/28/12 02:33 PM

Thanks Sean...Darren U Bet..

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ryderc1
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Re: AP 6" Superplanetary on AstroMart new [Re: Napersky]
      #5592801 - 12/28/12 02:44 PM

The serial must be 61244 since the 6 indicates the aperture and the 12 represents the f ratio.

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The Ardent
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Re: AP 6" Superplanetary on AstroMart new [Re: ryderc1]
      #5593122 - 12/28/12 06:48 PM

Napersky, Welcome to the 6" AP club!!!

Sometimes I still want the f/12 Superplanetary. Just for the way it looks set up in the daytime. After some amazing observing this year, I dont think I can improve optically on what I have now.
Maybe a 10" Mak?


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gillmj24
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Re: AP 6" Superplanetary on AstroMart new [Re: The Ardent]
      #5593144 - 12/28/12 06:58 PM

Yeah it better be a 6

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mikey cee
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Re: AP 6" Superplanetary on AstroMart new [Re: gillmj24]
      #5593702 - 12/29/12 01:19 AM

Mark I'm really happy for you man! You're one lucky rat that's all I can say. Let's see some pics....huh? Mike

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Napersky
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Re: AP 6" Superplanetary on AstroMart new [Re: mikey cee]
      #5594458 - 12/29/12 01:46 PM

Thanks Guys..its a 6.

Mikey Cee it's shipping sometime this week is all I know, once they send it they will email me the tracking numbers. Darren Drake will help me pick it up. I really believe this was Divine Providence. I never imagined I would own one of these. The one I would look thru at AstroFest was the best views I have had planetary with a telescope with the exception of the Dearborn and Darren Drake's dob.

Some day Mikey I'll even have an obseratory like yours!
Mark


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Napersky
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Re: AP 6" Superplanetary on AstroMart new [Re: Napersky]
      #5619364 - 01/12/13 04:14 PM Attachment (35 downloads)

Gary Hands called me on Thursday and the 5 boxes arrived at our local FedEx Office Monday.

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Napersky
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Re: AP 6" Superplanetary on AstroMart new [Re: Napersky]
      #5619367 - 01/12/13 04:15 PM Attachment (61 downloads)

OTA

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Napersky
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Re: AP 6" Superplanetary on AstroMart new [Re: Napersky]
      #5619370 - 01/12/13 04:17 PM Attachment (60 downloads)

OTA 2

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Napersky
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Re: AP 6" Superplanetary on AstroMart new [Re: Napersky]
      #5619373 - 01/12/13 04:18 PM Attachment (46 downloads)

G11

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mgwhittle
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Re: AP 6" Superplanetary on AstroMart new [Re: Napersky]
      #5619501 - 01/12/13 05:32 PM

Sweet! Lets see a picture of that 6 inch AP out of the box!

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Grava T
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Re: AP 6" Superplanetary on AstroMart new [Re: mgwhittle]
      #5619520 - 01/12/13 05:44 PM

Wow Mark! That is one sweet scope! Hope to hear a first light report soon.

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mikey cee
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Re: AP 6" Superplanetary on AstroMart new [Re: Grava T]
      #5619590 - 01/12/13 06:23 PM

Mark and Darren looks like you boys have nothing but *BLEEP* lick weather going on right now. We have winds and 20 but dry.....and clear tonight. Big deal huh? You puttin' that puppy together inside the garage and take us some pics?? Can't wait for your first impressions! Mike

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aa6ww
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Re: AP 6" Superplanetary on AstroMart new [Re: Napersky]
      #5620213 - 01/13/13 06:13 AM

Quote:

This is the best amateur refractor I have looked thru. Now what that does is exclude all large refractors over 6" since 6" is the largest I have been able to use.

Nothwithstanding the aperture limitation this scope presented outstanding views of the disc of Neptune with some detail. I have not seen any reflector, SCT including our Chicago Astronomical Society's 14 MEADE LX200 on a Paramount ME produce views anywhere close to this wonderful scope.

It's long focal length f12 truly makes it a SUPER PLANETARY INTRUSMENT.

Mark

I am not the seller and wish I could buy it!

http://www.ebay.com/itm/Astrophysics-6-f12-Superplanetary-refractor-Losmandy-...




These long triplets are absolutely the best 6" refractors ever built, period. Many years ago, I was at an outing and we were all watching a crescent venus and it smoked a near by AP-160 EDF so bad, after the owner of the EDF refractor got one look through the F12 Superplanetary, he turned his scope on other objects in the sky and acted like the comparison never happened.
I watched the shoemaker levy 9 impact on Jupiter with one of these scopes, and nothing around could match the sharpness and rock solid details the F12 could produce.
One thing no one ever talks about, because few people understand this, is that long tube refractors have a greater depth of focus, and are less affected by wavefront changes caused by atmospheric turbulence. Because of this, long tube refractors are more forgiving to outside conditions and give the most consistency in performance over shorter focal length scopes of the same aperture, regardless if they "claim" to be better corrected.
People can talk in these forums and show you spot diagrams and correction graphs and flood you with mathematics about how more modern shorter focal length scopes "should" give better performance, but in the real world when the rubber hits the road, you wont find a better 6" refractor on planets than a long tube F12 or even F15 triplet.
Congratulation on the purchase!!

...Ralph


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rfr66
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Re: AP 6" Superplanetary on AstroMart new [Re: aa6ww]
      #5620454 - 01/13/13 10:28 AM

Does the magic of the long focal ratio happen with just refractors or can you experience the same thing with something like an F20 Parallax or Royce telescope, meaning that it will be less subject to the affect of seeing and act more like a smaller aperture with regards to giving a stable image?

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rfic1
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Re: AP 6" Superplanetary on AstroMart new [Re: aa6ww]
      #5620513 - 01/13/13 10:55 AM

Quote:

Quote:

This is the best amateur refractor I have looked thru. Now what that does is exclude all large refractors over 6" since 6" is the largest I have been able to use.

Nothwithstanding the aperture limitation this scope presented outstanding views of the disc of Neptune with some detail. I have not seen any reflector, SCT including our Chicago Astronomical Society's 14 MEADE LX200 on a Paramount ME produce views anywhere close to this wonderful scope.

It's long focal length f12 truly makes it a SUPER PLANETARY INTRUSMENT.

Mark

I am not the seller and wish I could buy it!

http://www.ebay.com/itm/Astrophysics-6-f12-Superplanetary-refractor-Losmandy-...




These long triplets are absolutely the best 6" refractors ever built, period. Many years ago, I was at an outing and we were all watching a crescent venus and it smoked a near by AP-160 EDF so bad, after the owner of the EDF refractor got one look through the F12 Superplanetary, he turned his scope on other objects in the sky and acted like the comparison never happened.
I watched the shoemaker levy 9 impact on Jupiter with one of these scopes, and nothing around could match the sharpness and rock solid details the F12 could produce.
One thing no one ever talks about, because few people understand this, is that long tube refractors have a greater depth of focus, and are less affected by wavefront changes caused by atmospheric turbulence. Because of this, long tube refractors are more forgiving to outside conditions and give the most consistency in performance over shorter focal length scopes of the same aperture, regardless if they "claim" to be better corrected.
People can talk in these forums and show you spot diagrams and correction graphs and flood you with mathematics about how more modern shorter focal length scopes "should" give better performance, but in the real world when the rubber hits the road, you wont find a better 6" refractor on planets than a long tube F12 or even F15 triplet.
Congratulation on the purchase!!

...Ralph




Ralph,
I could not agree more with your assessment. At one time I had 5 high end 5" apochromats. A Takahashi FC125, FS 128, AP 130 f/8.3, 5" f/6 TMB and a 130 f/12 ApoMax. During periods of less favorable seeing the ApoMax always provided the better view. Selling that particular scope was not one of the best equipment decisions I have made.
Bob


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gillmj24
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Re: AP 6" Superplanetary on AstroMart new [Re: rfr66]
      #5620521 - 01/13/13 10:58 AM

Quote:

Does the magic of the long focal ratio happen with just refractors or can you experience the same thing with something like an F20 Parallax or Royce telescope, meaning that it will be less subject to the affect of seeing and act more like a smaller aperture with regards to giving a stable image?




I would say no because tube currents often affect a cassegrain more than a refractor, IMHO. Especially because you are probably talking about apertures larger than 6".


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mikey cee
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Re: AP 6" Superplanetary on AstroMart new [Re: gillmj24]
      #5620808 - 01/13/13 01:33 PM

In all my years of observing I've never experienced a refractor like image in any other type of scope. Sorry just isn't going to happen and I'm not trying to sell telescopes here. I want a nice long depth of focus with true spot on airy discs whenever seeing permits. Mark you'll have one knockout image I'm sure...topped only by your Zeiss if and when you get it done. Mike

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chboss
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Re: AP 6" Superplanetary on AstroMart new [Re: aa6ww]
      #5621718 - 01/13/13 09:22 PM

Quote:


These long triplets are absolutely the best 6" refractors ever built, period.




A long focus refractor is unbeatable for visual planetary observation, or double stars, no question. The depth of focus makes all the difference in unsteady conditions.

But I will concur that there was no better 6" refractor for this purpose. Here is a link to Thomas Backs writeup of Astro-Physics telescope history:
http://geogdata.csun.edu/~voltaire/tmb/tmb1.html

In his view the later 6" f9 EDT was a step ahead of the Super Planetary.
Nevertheless I think the Super Planetary is a superb instrument at an attractive price, congratulation good catch!

best regards
Chris


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Max Lattanzi
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Re: AP 6" Superplanetary on AstroMart new [Re: rfr66]
      #5622418 - 01/14/13 10:25 AM

Quote:

Does the magic of the long focal ratio happen with just refractors or can you experience the same thing with something like an F20 Parallax or Royce telescope, meaning that it will be less subject to the affect of seeing and act more like a smaller aperture with regards to giving a stable image?




With a compound f/20 you won't experience anything near the effect of a long-focus refractor, rather the opposite. Indeed, that is not a f/20, rather a f/4 (native f/ratio of the primary mirror) whose swift f/4 defocus gets magnified 5x by the secondary. A totally different animal.

OTOH, if you have, say, a f/11 Newtonian (thinking of the 6" model that was offered by a company in UK) that would give you a similar defocus performance than, say, a nearby 6" f/11 refractor. Image won't be at all identical, as calm, as clear and as pure, but definitely *way* closer than, say, a nearby f/11 SCT (whose primary f/ratio is usually f/2 and whose f/2 defocus gets again magnified 5x by the secondary).

Hope it's clear more than confusing

-- Max


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Max Lattanzi
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Re: AP 6" Superplanetary on AstroMart new [Re: chboss]
      #5622435 - 01/14/13 10:37 AM

Quote:

Here is a link to Thomas Backs writeup of Astro-Physics telescope history:
http://geogdata.csun.edu/~voltaire/tmb/tmb1.html

In his view the later 6" f9 EDT was a step ahead of the Super Planetary.





Tom had an early Superplanetary and his experience may not be generalised, mainly with the several variations the SP design had over the years. As far as I understand, Roland did use this scope as a sort of optical laboratory.

May I also add that I have the luck to own what is most probably the last 6" f/12 Superplanetary ever build, whose design, among other things, is different from the one discussed here and whose coatings are EDF/EDT like, and I can totally mimic Ralph experience: a side-by-side with the 6.1" and 6.3" EDF on planets is *striking*. Of course the EDFs are outstanding astrographs, but on hi-res their performances are definitely a step behind their f/12 cousin.

-- Max


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Mike Clemens
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Re: AP 6" Superplanetary on AstroMart new [Re: Max Lattanzi]
      #5622636 - 01/14/13 12:59 PM

I had one of the last 6" f/12 also. It was a 1992 "Starfire" super-planetary 6" f/12
http://www.pbase.com/mclemens1969/ap152_f12

I remember being astounded by how little focus correction was required when using the scope.

Everyone had an easy time seeing great planetary details with that scope.

During the day it had definite green and red color.


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The Ardent
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Re: AP 6" Superplanetary on AstroMart new [Re: Mike Clemens]
      #5622699 - 01/14/13 01:33 PM

Thats the scope I want, simply beacuse its better to LOOK AT, than my 6" f/9.

Quote:

I had one of the last 6" f/12 also. It was a 1992 "Starfire" super-planetary 6" f/12
http://www.pbase.com/mclemens1969/ap152_f12

I remember being astounded by how little focus correction was required when using the scope.

Everyone had an easy time seeing great planetary details with that scope.

During the day it had definite green and red color.




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Widespread
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Re: AP 6" Superplanetary on AstroMart new [Re: The Ardent]
      #5622802 - 01/14/13 02:41 PM

Very interesting discussion on scope FL and depth of focus!

You hear a lot of talk about improved contrast in refractors due to the lack of a secondary mirror, but this is the first I've heard about long FL refractors having a performance advantage in poor seeing.

It makes sense! Good stuff.


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Re: AP 6" Superplanetary on AstroMart new [Re: Widespread]
      #5622888 - 01/14/13 03:30 PM

I used to take a variety of scopes out to a local nature center for public viewing. With the 6" f/12 it was super easy for newcomers to see all the planetary details as I walked them through the view. People that viewed through my scopes rarely really took a quick liking to that scope.

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Re: AP 6" Superplanetary on AstroMart new [Re: Grava T]
      #5622893 - 01/14/13 03:32 PM

Quote:

Wow Mark! That is one sweet scope! Hope to hear a first light report soon.




Michael,

First Light was not worth reporting. Bad seeing...

Mark


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Napersky
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Re: AP 6" Superplanetary on AstroMart new [Re: mikey cee]
      #5622895 - 01/14/13 03:34 PM

Quote:

Mark and Darren looks like you boys have nothing but *BLEEP* lick weather going on right now. We have winds and 20 but dry.....and clear tonight. Big deal huh? You puttin' that puppy together inside the garage and take us some pics?? Can't wait for your first impressions! Mike





Mikey...Weather and Seeing totally Bleeping.



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Napersky
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Re: AP 6" Superplanetary on AstroMart new [Re: aa6ww]
      #5622900 - 01/14/13 03:36 PM

Quote:

Quote:

This is the best amateur refractor I have looked thru. Now what that does is exclude all large refractors over 6" since 6" is the largest I have been able to use.

Nothwithstanding the aperture limitation this scope presented outstanding views of the disc of Neptune with some detail. I have not seen any reflector, SCT including our Chicago Astronomical Society's 14 MEADE LX200 on a Paramount ME produce views anywhere close to this wonderful scope.

It's long focal length f12 truly makes it a SUPER PLANETARY INTRUSMENT.

Mark

I am not the seller and wish I could buy it!

http://www.ebay.com/itm/Astrophysics-6-f12-Superplanetary-refractor-Losmandy-...




These long triplets are absolutely the best 6" refractors ever built, period. Many years ago, I was at an outing and we were all watching a crescent venus and it smoked a near by AP-160 EDF so bad, after the owner of the EDF refractor got one look through the F12 Superplanetary, he turned his scope on other objects in the sky and acted like the comparison never happened.
I watched the shoemaker levy 9 impact on Jupiter with one of these scopes, and nothing around could match the sharpness and rock solid details the F12 could produce.
One thing no one ever talks about, because few people understand this, is that long tube refractors have a greater depth of focus, and are less affected by wavefront changes caused by atmospheric turbulence. Because of this, long tube refractors are more forgiving to outside conditions and give the most consistency in performance over shorter focal length scopes of the same aperture, regardless if they "claim" to be better corrected.
People can talk in these forums and show you spot diagrams and correction graphs and flood you with mathematics about how more modern shorter focal length scopes "should" give better performance, but in the real world when the rubber hits the road, you wont find a better 6" refractor on planets than a long tube F12 or even F15 triplet.
Congratulation on the purchase!!

...Ralph





Ralph, You and I are completely on the same page! Thanks.

Mark


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Napersky
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Re: AP 6" Superplanetary on AstroMart new [Re: Napersky]
      #5622912 - 01/14/13 03:41 PM

Max,

Always good to hear from You!

Mark

By the way the name Mark is also "Marcus" which can also be "Max"..Like Max Planck.

http://en.wikipedia.org/wiki/Max_Planck


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chboss
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Re: AP 6" Superplanetary on AstroMart new [Re: Max Lattanzi]
      #5623762 - 01/15/13 02:05 AM

Quote:


Tom had an early Superplanetary and his experience may not be generalised, mainly with the several variations the SP design had over the years. As far as I understand, Roland did use this scope as a sort of optical laboratory.

May I also add that I have the luck to own what is most probably the last 6" f/12 Superplanetary ever build, whose design, among other things, is different from the one discussed here and whose coatings are EDF/EDT like, and I can totally mimic Ralph experience: a side-by-side with the 6.1" and 6.3" EDF on planets is *striking*. Of course the EDFs are outstanding astrographs, but on hi-res their performances are definitely a step behind their f/12 cousin.

-- Max




Hi Max

Interesting information, so how long and how many versions of the Super Planetary were built?

Did you have the chance to compare your Super Planetary to a 6" f9 EDT T. Back mentions in his text?
I would be interested how big the visual difference is between an f9 and f12 telescope.

best regards
Chris


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TG
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Re: AP 6" Superplanetary on AstroMart new [Re: chboss]
      #5624467 - 01/15/13 01:55 PM

Quote:


Did you have the chance to compare your Super Planetary to a 6" f9 EDT T. Back mentions in his text?
I would be interested how big the visual difference is between an f9 and f12 telescope.

best regards
Chris




I don't have an EDT but I did used to own a 6" f/12 SP and now have a 7" F/9 StarFire. Visually, the SF beats the SP in terms of low contrast features seen and I don't think this is entirely due to the extra 1" of aperture. I suspect this is instead due to its better color correction (A-P ads claimed 5x better).

Tanveer.


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aa6ww
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Re: AP 6" Superplanetary on AstroMart new [Re: TG]
      #5624877 - 01/15/13 05:50 PM

Quote:

Quote:


Did you have the chance to compare your Super Planetary to a 6" f9 EDT T. Back mentions in his text?
I would be interested how big the visual difference is between an f9 and f12 telescope.

best regards
Chris




I don't have an EDT but I did used to own a 6" f/12 SP and now have a 7" F/9 StarFire. Visually, the SF beats the SP in terms of low contrast features seen and I don't think this is entirely due to the extra 1" of aperture. I suspect this is instead due to its better color correction (A-P ads claimed 5x better).

Tanveer.




It's the aperture that was giving you more contras. 5x more correction than what? Maybe, maybe, that would show up in astrophotograhy, but visually, its the aperture that is making the contras difference. Doing a side by side on a TEC 140 vs a TEC 160 on Jupiter one night a few years back, the one thing you notice is on the larger glass, the whites are whiter and the darks are darker, just like the laundry detergent commercials claim.... Same effect with a C8 vs a C9.25 At these smaller apertures, every inch adds quite a bit to contras. and light gathering.
On larger apertures, the better contras begins to show up by displaying color. For example, on my C11, vs C14, on Jupiter, with the C14, you notice shades of blue and shades of brown, instead of just gray, and the whites take on different shades also, where some of the whites become more of a peach or tan color. This isn't obvious in the C11. Inside the GRS, you begin to see the swirls you cant see in the C11 when the seeing is excellent, something that seldom happens but when it does, these forums light up with claims of almost unbelievable visual observations and ridiculous high power views unheard of under normal conditions.
Same with a Meade 16 SCT vs C14, in the 16, the veil nebula begins to show shades of blues and violets, not so obvious in the C14. High power views of the Ring Nebula being to show reds like a ring of fire in the 16" SCT.

All of this is what makes this hobby so fun, exhilarating and exciting, and why getting out and using our gear is way more fun than talking about it.

...Ralph


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Re: AP 6" Superplanetary on AstroMart new [Re: aa6ww]
      #5624900 - 01/15/13 06:03 PM

When comparing different scopes, one must take care to equalize the magnification when making assessments of relative contrast. A little extra magnification can do a lot to suppress glare, and enhance perceived contrast on bright targets. Larger aperture scopes also tend to have longer focal lengths, requiring use of different focal length eyepieces to achieve a given magnification.

Regards,

Jim


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chboss
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Re: AP 6" Superplanetary on AstroMart new [Re: TG]
      #5624905 - 01/15/13 06:07 PM

Thank you Tanveer
That was the information I was looking for.

best regards
Chris


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Max Lattanzi
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Re: AP 6" Superplanetary on AstroMart new [Re: TG]
      #5624916 - 01/15/13 06:13 PM

Quote:

Quote:


Did you have the chance to compare your Super Planetary to a 6" f9 EDT T. Back mentions in his text?
I would be interested how big the visual difference is between an f9 and f12 telescope.

best regards
Chris




I don't have an EDT but I did used to own a 6" f/12 SP and now have a 7" F/9 StarFire. Visually, the SF beats the SP in terms of low contrast features seen and I don't think this is entirely due to the extra 1" of aperture. I suspect this is instead due to its better color correction (A-P ads claimed 5x better).

Tanveer.




I do have a 180EDT f/9 which was refigured, reoiled and recoated by Roland. On medium-good seeing its performances are visibly superior to the aforementioned 152 f/12 Starfire. Still, this Superplanetary has a spherical and a color correction which is *at least* on par with the EDT. Even better, I would say from its star test, which is an indistinguishable pure white in/out on 1 mag stars.

In my case, the superiority of the 180EDT is totally given by its 1" extra aperture.

-- Max


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TG
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Re: AP 6" Superplanetary on AstroMart new [Re: aa6ww]
      #5625009 - 01/15/13 07:23 PM

Quote:

Quote:

I suspect this is instead due to its better color correction (A-P ads claimed 5x better).

Tanveer.




It's the aperture that was giving you more contras. 5x more correction than what? Maybe, maybe, that would show up in astrophotograhy, but visually, its the aperture that is making the contras difference.




Actually, I dug in a bit more and it seems that I have misremembered, mixing up Thomas Back's history of A-P lenses, where he mentions a 5x improvement in correction of violet in the SF series over the prior A-P lenses, with A-Ps ads showing the secondary spectrum curve for the SF lenses. Inspecting this ad for the original triplet, it looks like that the secondary spectrum correction wasn't significantly improved in the visual range. I agree that an improvement in violet wouldn't translate to much at the eyepiece but I did notice it visually between the two lenses: the in/out focus diffraction patters of the SF are much cleaner, being clear on both sides of the focus and almost white while in the SP they're fuzzier on one size and green/magenta colored on either side. On very bright stars, in the SP, there's a violet halo and it's much smaller/fainter in the SF.

Perhaps it was that the SF was just better figured. The contrast difference I saw can't be explained by a measly 16% increase in aperture.

Tanveer.


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Re: AP 6" Superplanetary on AstroMart new [Re: TG]
      #5630673 - 01/18/13 10:14 PM Attachment (63 downloads)

Darren Drake at the new AP Superplanetary

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Napersky
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Re: AP 6" Superplanetary on AstroMart new [Re: Napersky]
      #5630676 - 01/18/13 10:15 PM Attachment (54 downloads)

Me at the device

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Napersky
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Re: AP 6" Superplanetary on AstroMart new [Re: Napersky]
      #5630678 - 01/18/13 10:15 PM Attachment (55 downloads)

Another me

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Erik Bakker
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Re: AP 6" Superplanetary on AstroMart new [Re: Napersky]
      #5631055 - 01/19/13 05:05 AM

Very nice!

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chboss
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Re: AP 6" Superplanetary on AstroMart new [Re: Erik Bakker]
      #5631178 - 01/19/13 09:04 AM

Nice pictures of a great scope!

regards
Chris


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Re: AP 6" Superplanetary on AstroMart new [Re: Napersky]
      #5631541 - 01/19/13 01:04 PM

Mark,

Congradulations on your new Scope .

CS,KLU,

,

Tom


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Sunspot
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Re: AP 6" Superplanetary on AstroMart new [Re: Napersky]
      #5631582 - 01/19/13 01:30 PM

Those pictures definitely give the image of how large that scope is. I'm envious!

Paul


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bobmarleyou812
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Re: AP 6" Superplanetary on AstroMart new [Re: Sunspot]
      #5631772 - 01/19/13 03:34 PM

...

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TG
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Re: AP 6" Superplanetary on AstroMart new [Re: Napersky]
      #5635722 - 01/21/13 09:09 PM

Nice! Is the tube 7" in diameter?

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Napersky
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Re: AP 6" Superplanetary on AstroMart new [Re: TG]
      #5639090 - 01/23/13 03:19 PM

I haven't measured the tube but there may be trouble with the optics more study is needed.

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mustgobigger
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Re: AP 6" Superplanetary on AstroMart new [Re: Napersky]
      #5639148 - 01/23/13 04:00 PM

sorry to hear that mark,
what about sending it back.
that much money it should have perfect optics.
ebay has buyer protection plan.
you should still be able to return it up to 30 days
no matter what the seller says about returns.
garys a reputable dealer and should give you no problem.
or at least fix it for you.
hope it all works out and keep us posted.


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mustgobigger
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Re: AP 6" Superplanetary on AstroMart new [Re: mustgobigger]
      #5639149 - 01/23/13 04:01 PM

yes the tube is 7" and ota weighs 26lbs.

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Darren Drake
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Re: AP 6" Superplanetary on AstroMart new [Re: Napersky]
      #5639159 - 01/23/13 04:07 PM

He did measure the OD and it is 6 7/8".

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Napersky
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Re: AP 6" Superplanetary on AstroMart new [Re: Darren Drake]
      #5639167 - 01/23/13 04:10 PM

Star Test of Sirius shows diffraction spikes. This should not be. Should have been able to go higher power and see detail on Jupiter was very disappointed.

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Napersky
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Re: AP 6" Superplanetary on AstroMart new [Re: Napersky]
      #5639173 - 01/23/13 04:12 PM

30 day is no ones "return period" for mail order transactions its Federal Law!

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Napersky
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Re: AP 6" Superplanetary on AstroMart new [Re: Napersky]
      #5639180 - 01/23/13 04:15 PM

I need to get a ronchi tester built.
I have a good bench for testing will actually need to extend it for this scope.

The Zygo is a nightmare.

Mark


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Napersky
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Re: AP 6" Superplanetary on AstroMart new [Re: Napersky]
      #5639182 - 01/23/13 04:17 PM

I hope the NASA glass is not damaged and that no refiguring needs to be done as there is no glass to satisfactory replace it.

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Darren Drake
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Re: AP 6" Superplanetary on AstroMart new [Re: Napersky]
      #5639188 - 01/23/13 04:21 PM

I tested it and I found it has a bad edge. About the last 1/10 inch or so so a mask can make a big difference.

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mustgobigger
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Re: AP 6" Superplanetary on AstroMart new [Re: Darren Drake]
      #5639209 - 01/23/13 04:33 PM

ebays buyer protection lasts for 30 days and if item was not as described you can file a case and return it.
unless you bought it other than paypal or one of their
approved payment plans.


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Re: AP 6" Superplanetary on AstroMart new [Re: mustgobigger]
      #5639280 - 01/23/13 05:26 PM

Is the bad edge a manufacturing issue, or did it become an "acquired" defect? Who ultimately answers for it? These are tough questions to answer.

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jjbird
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Re: AP 6" Superplanetary on AstroMart new [Re: jjbird]
      #5639284 - 01/23/13 05:29 PM

I wonder if Roland may want to have a chance to refigure it.

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Re: AP 6" Superplanetary on AstroMart new [Re: jjbird]
      #5639360 - 01/23/13 06:16 PM

I have wondered if it might be caused by a tight retaining ring or something simple but we have yet to look further into it. I consider this unlikely as I think there would be a pinching effect rather than a bad edge which appeared to around the entire circumference but again it needs to be further looked into.

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Re: AP 6" Superplanetary on AstroMart new [Re: jjbird]
      #5639363 - 01/23/13 06:16 PM

Quote:

I wonder if Roland may want to have a chance to refigure it.




+1

Get in touch with AP - ASAP! Sorry to hear about this - hopefully it can be solved by AP or amicably with the seller...


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Re: AP 6" Superplanetary on AstroMart new [Re: Napersky]
      #5639473 - 01/23/13 07:42 PM

Quote:

30 day is no ones "return period" for mail order transactions its Federal Law!




Really? Never heard of this before and my google search of the subject does not have provided any info on this. Where are you getting this info from? I'd love this to be true!


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Jeff B
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Reged: 12/30/06

Re: AP 6" Superplanetary on AstroMart new [Re: Napersky]
      #5640805 - 01/24/13 02:12 PM

Quote:

Star Test of Sirius shows diffraction spikes. This should not be. Should have been able to go higher power and see detail on Jupiter was very disappointed.




Sorry to hear about the weird star test. Diffraction spikes suggest to me stress on the glass. If so, it can come from several sources.

For example, I had an older 5" oil spaced AP lens that also displayed diffraction spikes, the cause of which were the screws used to secure the cell in the tube. They were very tight and applied enough pressure to the cell to stress the glass. Loosening the screws fixed everything. Extreme cold can also shrink the cell & tube to the point of pinching. Also, Roland sometimes used a gel rather than oil. As the gel ages, it too can apply stress to the lens block.

The former 2 you can check out yourself, the latter will require a return to AP. It may take a few months to get it back too as Roland works service returns in as time permits. Also, there will be a service charge ( I paid $300 for another lens return that displayed a hexagonal diffraction pattern). However, you'll get back a basically new lens, fully serviced and tested.

Jeff


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Darren Drake
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Reged: 10/09/02

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Re: AP 6" Superplanetary on AstroMart new [Re: Jeff B]
      #5640824 - 01/24/13 02:24 PM

I don't think diffration spikes is the best way to describe the aberration we saw. It was more like a very "hairy" outer ring. It is caused from a turned edge.

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chboss
professor emeritus


Reged: 03/24/08

Loc: Zurich Switzerland
Re: AP 6" Superplanetary on AstroMart new [Re: Darren Drake]
      #5641881 - 01/25/13 02:33 AM

Sorry to hear about the problems with the optics.
It will be interesting to find out what is causing this problem.

best regards
Chris


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TG
Pooh-Bah


Reged: 11/02/06

Loc: Latitude 47
Re: AP 6" Superplanetary on AstroMart new [Re: Darren Drake]
      #5642404 - 01/25/13 11:44 AM

Quote:

I don't think diffration spikes is the best way to describe the aberration we saw. It was more like a very "hairy" outer ring. It is caused from a turned edge.




Did you test with a very narrow-band green filter? The early A-Ps are not perfectly color corrected and the star test can be muddied by CA.

Also, IIRC, "hairy" outer ring is a sign of rough optics. Turned edge gives you clear rings on on side of focus and fuzzy ones on the other. Here's Suiter's link for reference:

http://home.digitalexp.com/~suiterhr/TM/kestner.jpg

As I doubt Roland ever produced rough optics, you may want to check the lens for oil leakage and separation. A separation around the edge could be producing what you're seeing.

Tanveer.


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Darren Drake
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Reged: 10/09/02

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Re: AP 6" Superplanetary on AstroMart new [Re: TG]
      #5642485 - 01/25/13 12:29 PM

No the "hairy" part was moving due to seeing issues and not part of the lens. No filter was used but the bad edge was glaringly obvious in the null test but like I said much more is needed before anything final is determined. Mark is getting heart surgery today and will be outa commision a few weeks.

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jjbird
super member
*****

Reged: 01/17/06

Loc: Wisconsin
Re: AP 6" Superplanetary on AstroMart new [Re: Darren Drake]
      #5642566 - 01/25/13 01:13 PM

Best wishes for a quick recovery to Mark.

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mustgobigger
Postmaster
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Reged: 06/12/07

Loc: Michigan
Re: AP 6" Superplanetary on AstroMart new [Re: jjbird]
      #5643172 - 01/25/13 07:03 PM

Get well mark and keep us all
Posted on your recovery.


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Jeff B
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Reged: 12/30/06

Re: AP 6" Superplanetary on AstroMart new [Re: mustgobigger]
      #5643547 - 01/25/13 11:06 PM

God speed Mark. All the best.

Jeff


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mikey cee
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Reged: 01/18/07

Loc: bellevue ne.
Re: AP 6" Superplanetary on AstroMart new [Re: Jeff B]
      #5643574 - 01/25/13 11:31 PM

Darren obviously we didn't see this one coming. But tell Mark that Mike and Donna from Omaha wish him a good prognosis and strong recovery. He owes me a look in his Unitron and hopefully that Super Planetary when the bugs are worked out. Mike

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Erik Bakker
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Reged: 08/10/06

Loc: The Netherlands, Europe
Re: AP 6" Superplanetary on AstroMart new [Re: Napersky]
      #5643917 - 01/26/13 08:04 AM

Quote:

Me at the device




Get well soon Mark!

Love to see you back at the device with you both in proper order


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Darren Drake
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Reged: 10/09/02

Loc: Chicagoland
Re: AP 6" Superplanetary on AstroMart new [Re: Erik Bakker]
      #5647954 - 01/28/13 11:59 AM

Mark is on the road to recovery and should be back on cn soon. There is more about Mark in the classics forum....

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Rossmon
sage
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Reged: 07/09/10

Loc: Marin County, CA
Re: AP 6" Superplanetary on AstroMart new [Re: t.r.]
      #5651562 - 01/30/13 03:00 AM

Quote:

I like the 6" F/9 Starfire in "Cadet Blue" on the Mart. Alas, pickup only in CA.



I tested this scope two months ago. I am not an AP expert! The seller is a very nice guy. The scope tube was pretty rough. The objective filthy but probably untouched. The unique handbuilt mount head was very pretty wood but not very practical compared to more modern stuff. The focuser was pretty archaic to me and my Denk II bino w/ocs would not come to focus. So modifications for that seemed to be costly. One of the dsc's or maybe the computer broken. I pushed it to m42 and the moon. M42 trapezium looked just ok, frankly, i didnt see much difference compared to my np127.
So I passed and just got a 155edfs 2 weeks ago in new condition. What a difference in the view and the cost!


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TG
Pooh-Bah


Reged: 11/02/06

Loc: Latitude 47
Re: AP 6" Superplanetary on AstroMart new [Re: Rossmon]
      #5652373 - 01/30/13 01:46 PM

Quote:

Quote:

I like the 6" F/9 Starfire in "Cadet Blue" on the Mart. Alas, pickup only in CA.



I tested this scope two months ago. I am not an AP expert! The seller is a very nice guy. The scope tube was pretty rough. The objective filthy but probably untouched. The unique handbuilt mount head was very pretty wood but not very practical compared to more modern stuff. The focuser was pretty archaic to me and my Denk II bino w/ocs would not come to focus. So modifications for that seemed to be costly. One of the dsc's or maybe the computer broken. I pushed it to m42 and the moon. M42 trapezium looked just ok, frankly, i didnt see much difference compared to my np127.
So I passed and just got a 155edfs 2 weeks ago in new condition. What a difference in the view and the cost!





I have its larger brother and it is simply terrific. Unless you could identify something specifically wrong, say, in the star-test, your so-so views of the Trap could be due to cool-down issues or seeing conditions. The blue tubes were the 2nd generation A-P lenses and were much better corrected for CA in blue/violet than previous ones. The NP127 with its modern ED lenses will produce a better color rendition but the spherical correction in my StarFire is phenomenal. It has virtually a perfect star test and it performs superbly on Jupiter.

Another thing to consider is that these are oil spaced lenses. Oil leaking out will degrade the performance. From your description, it looks like that the lens should go back to A-P for servicing anyway before a sale though given the low price, the seller may expect the buyer to do it.

The focuser on these scopes is a so-so Japanese cast aluminium one. It isn't bad, just not as good as the machined A-P ones. The tube is a normal aluminium pipe with baffles welded in, not a machined one like newer A-P tubes, so it's a simple matter to cut it to a shorter length and install a backplate from D&G (<$200) that will allow a newer A-P focuser to be used *and* allow a B-V to come to focus with comfort as well. I did exactly this with mine. I already had an older, machined A-P focuser on hand so the cost to me was $200 + some sweat. The end-result is sweet.

Tanveer


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Rossmon
sage
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Reged: 07/09/10

Loc: Marin County, CA
Re: AP 6" Superplanetary on AstroMart new [Re: TG]
      #5652428 - 01/30/13 02:11 PM

Quote:

I have its larger brother and it is simply terrific. Unless you could identify something specifically wrong, say, in the star-test, your so-so views of the Trap could be due to cool-down issues or seeing conditions. The blue tubes were the 2nd generation A-P lenses and were much better corrected for CA in blue/violet than previous ones. The NP127 with its modern ED lenses will produce a better color rendition but the spherical correction in my StarFire is phenomenal. It has virtually a perfect star test and it performs superbly on Jupiter.

Another thing to consider is that these are oil spaced lenses. Oil leaking out will degrade the performance. From your description, it looks like that the lens should go back to A-P for servicing anyway before a sale though given the low price, the seller may expect the buyer to do it.

The focuser on these scopes is a so-so Japanese cast aluminium one. It isn't bad, just not as good as the machined A-P ones. The tube is a normal aluminium pipe with baffles welded in, not a machined one like newer A-P tubes, so it's a simple matter to cut it to a shorter length and install a backplate from D&G (<$200) that will allow a newer A-P focuser to be used *and* allow a B-V to come to focus with comfort as well. I did exactly this with mine. I already had an older, machined A-P focuser on hand so the cost to me was $200 + some sweat. The end-result is sweet.

Tanveer



Yup, a lot more work than I wanted to do! Also, it would need rings, buying an ap focuser, no old ones laying around, what ever AP charges for servicing the objective plus shipping(assume just for the objective) and not being an expert, just hoping the lens didn't require more than a cleaning, possible reoiling. A complete sanding, repainting of tube. If you like pristine like I do.
All these costs could add up to another $1,000 easily plus a lengthy time back at AP as I have heard that Rolando fits that work in where and when he can. Maybe I will see if I can get a better deal if it is still there!!


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TG
Pooh-Bah


Reged: 11/02/06

Loc: Latitude 47
Re: AP 6" Superplanetary on AstroMart new [Re: Rossmon]
      #5652771 - 01/30/13 05:00 PM

Quote:


Yup, a lot more work than I wanted to do! Also, it would need rings, buying an ap focuser, no old ones laying around, what ever AP charges for servicing the objective plus shipping(assume just for the objective) and not being an expert, just hoping the lens didn't require more than a cleaning, possible reoiling. A complete sanding, repainting of tube. If you like pristine like I do.
All these costs could add up to another $1,000 easily plus a lengthy time back at AP as I have heard that Rolando fits that work in where and when he can. Maybe I will see if I can get a better deal if it is still there!!




Somebody recently told me that A-P charges a base fee of $350 to service lenses and it's folded into the actual charges. In this case, they did the re-oiling/cleaning at no charge as they considered it under warranty (this was a 1989 lens!).


But again, given that pre-StarFire 6" Super Planetaries were sold in recent years for well over $5k, I'd say that this is still a great deal for somebody if he's willing to put some sweat equity into it, assuming the lens is good.

The ad on Astromart is still up but you have to search for it as it's fallen off the recent ads they display.



Tanveer.


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George N
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Reged: 05/19/06

Loc: Binghamton & Indian Lake NY
Re: AP 6" Superplanetary on AstroMart new [Re: TG]
      #5652808 - 01/30/13 05:15 PM

Quote:

Quote:

Quote:

I like the 6" F/9 Starfire ..... ..... .....!





.....

The focuser on these scopes is a so-so Japanese cast aluminium one. It isn't bad, just not as good as the machined A-P ones. The tube is a normal aluminium pipe with baffles welded in, not a machined one like newer A-P tubes, so it's a simple matter to cut it to a shorter length and install a backplate from D&G (<$200) that will allow a newer A-P focuser to be used *and* allow a B-V to come to focus with comfort as well. I did exactly this with mine. I already had an older, machined A-P focuser on hand so the cost to me was $200 + some sweat. The end-result is sweet.

Tanveer




I thought that A-P focusers from this era were East German, but Ill take your word for it.

Ive used an A-P 6 F/12 since the late 1980s and the focuser finally died about 2 years ago. The gears and plastic pressure plate chewed themselves up. We brought the scope to Moonlite (afternoon round trip for us) and he installed a new focuser while we waited. It works great. Rotating, two speed, 2.5 inch has slots to hold a finder scope.

A thin cork ring fell out of the back of the lens cell. Roland has recommended sending the lens to him and he will fix it. He said that the scope should be gently used until the ring is replaced. He also said to just send the lens cell because he thinks the scope could get damaged in shipping. In the meantime, the scope provides the same wonderful images it always has.


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junomike
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Reged: 09/07/09

Loc: Ontario
Re: AP 6" Superplanetary on AstroMart new [Re: George N]
      #6209771 - 11/22/13 04:05 PM

What ever happened to this? Curious as to the outcome?

Mike


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junomike
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Reged: 09/07/09

Loc: Ontario
Re: AP 6" Superplanetary on AstroMart new [Re: junomike]
      #6209796 - 11/22/13 04:16 PM

Found It! For those like me who don't visit the Classic Forum It looks like the story had a happy ending.

Mike


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