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Zeiss AS80/840

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#26 Disciplus55

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Posted 22 May 2018 - 11:23 AM

For example I would like to know what M44 extensions to use with which barlow / eyepieces combination, or straight through viewing or diagonal, etc... all existing accessories, photos, etc... 



#27 Orogeneza

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Posted 23 May 2018 - 11:02 AM

I just remembered that late Zeiss telescopes came with information booklet and I have one.

The information inside is mostly generic for whole telescope line, but It does look that AS80/840 is a bit special.

 

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#28 Orogeneza

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Posted 23 May 2018 - 11:04 AM

couple pages

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#29 Jim Curry

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Posted 23 May 2018 - 05:22 PM

You're about to make a lot of new friends after displaying that book...


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#30 Disciplus55

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Posted 24 May 2018 - 02:19 AM

Excellent !! Thanks !



#31 Disciplus55

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Posted 16 June 2018 - 02:23 AM

If someone is looking for a solar filter SFO 80, send me a message



#32 Disciplus55

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Posted 28 October 2018 - 03:54 AM

Hello there,

Protect me from what I want... or not...

I have that gorgeous Zeiss AS80/840, and have sold some gears lately to maybe potentially fund a new AP Stowaway... but because of its price in France, I have not raised enough funds yet... now, here is the question : would it make sense to replace my Zeiss by a Stowaway, meaning selling the Zeiss for the AP ?

Aperture is larger on the AP

OTA is overall more compact on the AP

Color correction will be better on the AP

Cooling time might be faster on the Zeiss

Doing visual only...

What other considerations shall I have in mind ?

Thanks for your inputs.



#33 Jim Curry

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Posted 28 October 2018 - 06:00 AM

You currently own a very high quality achromat, pleasing to look at and through.

 

Aperture is larger on the AP - This is the only reason I could see that would make the larger scope meaningful.  The AP will give you a larger exit pupil, brighter image at equivalent high powers on lunar/planetary viewing.  Is this the bulk of your use?

OTA is overall more compact on the AP - So what.  How is this an issue with your observing style?  Still a small scope.

Color correction will be better on the AP - Only at the highest magnifications.  Are you bothered now?

Cooling time might be faster on the Zeiss - Might be.  By what, 3.1 minutes?  Not a real issue.

 

Possible Solutions: 

Keep saving your money, keep the Zeiss, buy the AP.  Unless you know your name is high on the list you probably have many months to save.

Or,  sell the Tak, buy the AP. (that's what I'd do). 

 

Tough decision.

Jim


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#34 Fomalhaut

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Posted 28 October 2018 - 08:00 AM

 

 

Or,  sell the Tak, buy the AP. (that's what I'd do). 

 

 

 

That's just what I would not do: Your Tak FC100 DL has got only 6 cm longer focal length than AS80/840 and will exceed both (AS as well as Stowaway which has 8mm less aperture).

Therefore IMHO, just keep the Tak, be happy and forget.


Edited by Fomalhaut, 28 October 2018 - 02:52 PM.

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#35 Disciplus55

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Posted 31 October 2018 - 09:39 AM

Thanks a lot for both your inputs, I keep the Zeiss and Tak then :-)


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#36 Jim Curry

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Posted 31 October 2018 - 06:13 PM

👍

#37 Piggyback

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Posted 02 November 2018 - 07:12 AM

How many AS 80/840 produced? Anyone have a clue?



#38 Disciplus55

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Posted 02 November 2018 - 10:11 AM

How many AS 80/840 produced? Anyone have a clue?

No idea... we see quite some AS 80/1200 objectives, but full OTA’s like mine, I only one other in Europe...


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#39 Jim Curry

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Posted 02 November 2018 - 10:06 PM

Well, at least one of the AS80/840 lens/cells made it to the US for an OTA build.

 

Z840.jpg

 

Jim


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#40 Piggyback

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Posted 04 November 2018 - 07:17 AM

Baader at ATT Essen 2009 and 2010 had a Zeiss AS 80/840 on display. Can´t remember if it was for sale. Stunning collection.

 

 

Zeiss auf Baader Stand ATT Essen 2010_2red.jpg


Edited by Piggyback, 04 November 2018 - 08:21 AM.

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#41 Piggyback

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Posted 04 November 2018 - 07:57 AM

A Zeiss APQ 100/640mm OTA serial no. 97814 with Zeiss turret on Zeiss PA 1b mount and tripod could be had for 10.950.- Euro. A MAK 180 on PA II equatorial and tripod was available for 12.250.- Euro at the Baader stand. The carbon bodied 150/1200mm APQ on PA II equatorial and tripod was 18.250.- Euro. Most spectacular Zeiss display ever!


Edited by Piggyback, 04 November 2018 - 08:08 AM.


#42 Jim Curry

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Posted 04 November 2018 - 08:16 AM

Baader at ATT Essen 2009 had a Zeiss AS 80/840 on display. Can´t remember if this was for sale. Stunning collection.

 

 

attachicon.gif Zeiss auf Baader Stand ATT Essen 2010_2red.jpg

bigshock.gif


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