Jump to content

  •  

CNers have asked about a donation box for Cloudy Nights over the years, so here you go. Donation is not required by any means, so please enjoy your stay.

Photo

Rowan AZ75 prototypes being field tested now

  • Please log in to reply
125 replies to this topic

#1 mtminnesota

mtminnesota

    Messenger

  • -----
  • topic starter
  • Posts: 463
  • Joined: 20 Aug 2019
  • Loc: Santa Fe

Posted 15 October 2021 - 11:43 AM

I just saw this thread and wanted to share the news.

https://stargazerslo...wan-az75-mount/
  • eros312, 25585, Space_Race_T.J. and 1 other like this

#2 25585

25585

    Voyager 1

  • *****
  • Posts: 14,734
  • Joined: 29 Aug 2017
  • Loc: In a valley, in the SW UK. 51°N

Posted 15 October 2021 - 01:59 PM

Congrats to Alan White for his persistence & reward, and thanks to the Roses for their new design. I presume there will Losmandy D clamps too.

 

Will the AZ75 have engraved setting circles as Losmandy's AZ8 has?



#3 HxPI

HxPI

    Surveyor 1

  • -----
  • Posts: 1,853
  • Joined: 05 Sep 2013
  • Loc: Virginia Beach, VA

Posted 15 October 2021 - 03:38 PM

Very nice to see they are open to continued innovation. Maybe they can devise a top loader option for the AZ100. Thanks for sharing.


  • 25585 likes this

#4 John Huntley

John Huntley

    Gemini

  • *****
  • Posts: 3,268
  • Joined: 16 Jul 2006
  • Loc: SW England

Posted 15 October 2021 - 03:55 PM

No slow motion controls with the AZ75, apparently. I expect it will be beautifully engineered and very smooth though smile.gif



#5 fedele

fedele

    Ranger 4

  • -----
  • Posts: 304
  • Joined: 07 Jan 2021

Posted 15 October 2021 - 04:16 PM

Many of us need an AZ100 but simply smaller and lighter.
Then put the fine manual movements and prepare it for encoders and next motor kits or in that category we will choose another.



#6 mtminnesota

mtminnesota

    Messenger

  • -----
  • topic starter
  • Posts: 463
  • Joined: 20 Aug 2019
  • Loc: Santa Fe

Posted 15 October 2021 - 04:21 PM

The lack of slo-mo controls is disappointing for me, I've gotten used to having that luxury.  It might be time to finally give pushing a try, just to have an excuse to get this mount.


Edited by mtminnesota, 15 October 2021 - 04:25 PM.

  • Radiowaver and firemachine69 like this

#7 BlueMoon

BlueMoon

    Surveyor 1

  • *****
  • Posts: 1,673
  • Joined: 14 Jun 2007

Posted 15 October 2021 - 04:22 PM

 

No slow motion controls with the AZ75, apparently.

Pity. Just crossed it off my "would like to have" list. Having owned a buttery smooth Giro GR2 DX, I'll say "smooth is nice, but slo-mo is precise".


Edited by BlueMoon, 15 October 2021 - 04:27 PM.

  • PKDfan and firemachine69 like this

#8 Deadlake

Deadlake

    Messenger

  • -----
  • Posts: 449
  • Joined: 27 Jun 2020

Posted 15 October 2021 - 04:26 PM

Well it's a proto-type, guess the cost of the slow-mo's would make it cost the same as the AZ100...


Edited by Deadlake, 15 October 2021 - 04:26 PM.


#9 fedele

fedele

    Ranger 4

  • -----
  • Posts: 304
  • Joined: 07 Jan 2021

Posted 15 October 2021 - 04:35 PM

they are already high


Edited by fedele, 15 October 2021 - 04:46 PM.


#10 John Huntley

John Huntley

    Gemini

  • *****
  • Posts: 3,268
  • Joined: 16 Jul 2006
  • Loc: SW England

Posted 15 October 2021 - 05:03 PM

Well it's a proto-type, guess the cost of the slow-mo's would make it cost the same as the AZ100...

Yes I think it would be close.

 

Having seen and used the quality of the engineering that the AZ100 uses on it's slow motion drives, I fully understand how that would add quite a bit to the price of the AZ75.



#11 ayadai

ayadai

    Viking 1

  • *****
  • Posts: 816
  • Joined: 01 Feb 2021
  • Loc: Northern Mariana Islands, Micronesia

Posted 15 October 2021 - 05:34 PM

Perhaps a bit of a rhetorical question, but what are the practical use advantages of a finely engineered object of industrial art like this when compared to a common commercial  mount? Or is it more about the aesthetics/experience?


Edited by ayadai, 15 October 2021 - 05:35 PM.


#12 BlueMoon

BlueMoon

    Surveyor 1

  • *****
  • Posts: 1,673
  • Joined: 14 Jun 2007

Posted 15 October 2021 - 06:16 PM

 

finely engineered object

I'd say that's your answer. While I wouldn't slight the engineers who designed my Porta II, comparing offerings like the Losmandy AZ8 and Rowan AZ100 and now the AZ75 to it, I'd expect more performance and fewer problems from them as they are not "assembly line" products.

 

So, to me it's inherent in the manufacturing to a fair degree as well.

 

Clear skies.


Edited by BlueMoon, 15 October 2021 - 06:40 PM.


#13 Deadlake

Deadlake

    Messenger

  • -----
  • Posts: 449
  • Joined: 27 Jun 2020

Posted 16 October 2021 - 04:06 AM

Perhaps a bit of a rhetorical question, but what are the practical use advantages of a finely engineered object of industrial art like this when compared to a common commercial mount? Or is it more about the aesthetics/experience?


Bottom line is easier pointing at targets and for tracking. Until you use the mount hard to put into words how smooth it is, and very stable as well. No give in the mount at all.

The AZ100 is better at slow mo then say my scopetech zero.

Rowan is probably building out a range of mounts, the issue is people want slow mo at each price point however that is the bulk of the price. How they engineer around that is another question.


Edited by Deadlake, 16 October 2021 - 08:52 AM.


#14 25585

25585

    Voyager 1

  • *****
  • Posts: 14,734
  • Joined: 29 Aug 2017
  • Loc: In a valley, in the SW UK. 51°N

Posted 16 October 2021 - 07:24 AM

No slow motion controls with the AZ75, apparently. I expect it will be beautifully engineered and very smooth though smile.gif

That is a shame, & IMO puts it more in competition with the Tele Gizmo Giro Ercole which is also beautifully engineered. For that smaller size, cost apart, I would go for an AZ8 Losmandy mount, for its engraved setting circles & slow motion. 

 

Even low cost alt azi mounts have slow motion controls, so I don't understand Rowan's omission of that important facility.


  • John Huntley, ewave and fedele like this

#15 Deadlake

Deadlake

    Messenger

  • -----
  • Posts: 449
  • Joined: 27 Jun 2020

Posted 16 October 2021 - 07:30 AM

That is a shame, & IMO puts it more in competition with the Tele Gizmo Giro Ercole which is also beautifully engineered. For that smaller size, cost apart, I would go for an AZ8 Losmandy mount, for its engraved setting circles & slow motion. 

 

Even low cost alt azi mounts have slow motion controls, so I don't understand Rowan's omission of that important facility.

At noted even a high end light weight mounts slow-mo cannot compete with the AZ100 smoothness.
It's expensive to fabricate any where on the planet.



#16 25585

25585

    Voyager 1

  • *****
  • Posts: 14,734
  • Joined: 29 Aug 2017
  • Loc: In a valley, in the SW UK. 51°N

Posted 16 October 2021 - 07:52 AM

At noted even a high end light weight mounts slow-mo cannot compete with the AZ100 smoothness.
It's expensive to fabricate any where on the planet.

I have an AZ100, its a work of art in motion. So a shame the 75 will not have the same slow motion to make it a British AZ8. Will there be an encoder option?


  • Terra Nova likes this

#17 Deadlake

Deadlake

    Messenger

  • -----
  • Posts: 449
  • Joined: 27 Jun 2020

Posted 16 October 2021 - 07:54 AM

I have an AZ100, its a work of art in motion. So a shame the 75 will not have the same slow motion to make it a British AZ8. Will there be an encoder option?

Yes, Stu has one to test. It's 4.5 kg with encoders fitted.
Adding slow mo would of made the AZ75 close to the AZ100 in cost.
I think the AZ75 is closer to a NOH CT-20 in spec and price.


  • 25585 likes this

#18 25585

25585

    Voyager 1

  • *****
  • Posts: 14,734
  • Joined: 29 Aug 2017
  • Loc: In a valley, in the SW UK. 51°N

Posted 16 October 2021 - 07:59 AM

Prices will be interesting. Good to have encoders though.



#19 Deadlake

Deadlake

    Messenger

  • -----
  • Posts: 449
  • Joined: 27 Jun 2020

Posted 16 October 2021 - 08:04 AM

Prices will be interesting. Good to have encoders though.

It's £549 (that includes 20% VAT or sales tax). Encoders cost extra, but I'd guess same as AZ100.

Hence the comparison with the NOH CT-20.

My thoughts are if you a looking at Jupiter or Saturn it's best using a tracking mount to make use of the moment of seeing, for all other observations I used the pan handle, no slow motion require.

If you are using a C11 or 130 mm APO save the weight on the A75 (4.5 kg less then the AZ100) and in the summer get out the goto GEM for planetary use. 

IMHO.


Edited by Deadlake, 16 October 2021 - 08:09 AM.


#20 25585

25585

    Voyager 1

  • *****
  • Posts: 14,734
  • Joined: 29 Aug 2017
  • Loc: In a valley, in the SW UK. 51°N

Posted 16 October 2021 - 08:12 AM

It's £549 (that includes 20% VAT or sales tax). Encoders cost extra, but I'd guess same as AZ100.

Hence the comparison with the NOH CT-20.

Thank you. That's more than a Giro Ercole which does not have slow motion, but less than an AZ8 kit of mount + tripod+ 1 riser. Add an EQ5 'pod & pillar, the cost is closer.

 

AZ8s can have encoders & slow motion as well as engraved setting circled, so I guess getting more, you pay more. But good luck to Rowan, another success I hope.



#21 Deadlake

Deadlake

    Messenger

  • -----
  • Posts: 449
  • Joined: 27 Jun 2020

Posted 16 October 2021 - 08:18 AM

Thank you. That's more than a Giro Ercole which does not have slow motion, but less than an AZ8 kit of mount + tripod+ 1 riser. Add an EQ5 'pod & pillar, the cost is closer.

 

AZ8s can have encoders & slow motion as well as engraved setting circled, so I guess getting more, you pay more. But good luck to Rowan, another success I hope.

If you have a Nexus DSC it shows the position so why do you need the engraved setting circle?



#22 Kevin McCarthy

Kevin McCarthy

    Mariner 2

  • -----
  • Posts: 221
  • Joined: 10 Jan 2004
  • Loc: Surrey/UK

Posted 16 October 2021 - 08:49 AM

AZ75 spin test on YouTube.

https://youtu.be/G0-GCa64fIo
  • HxPI likes this

#23 25585

25585

    Voyager 1

  • *****
  • Posts: 14,734
  • Joined: 29 Aug 2017
  • Loc: In a valley, in the SW UK. 51°N

Posted 16 October 2021 - 09:51 AM

If you have a Nexus DSC it shows the position so why do you need the engraved setting circle?

Always good to have an unpowered alternative.



#24 25585

25585

    Voyager 1

  • *****
  • Posts: 14,734
  • Joined: 29 Aug 2017
  • Loc: In a valley, in the SW UK. 51°N

Posted 16 October 2021 - 09:54 AM

AZ75 spin test on YouTube.

https://youtu.be/G0-GCa64fIo

Feeling dizzy Eyecrazy.gif



#25 HxPI

HxPI

    Surveyor 1

  • -----
  • Posts: 1,853
  • Joined: 05 Sep 2013
  • Loc: Virginia Beach, VA

Posted 16 October 2021 - 11:25 AM

AZ75 spin test on YouTube.

https://youtu.be/G0-GCa64fIo

Top Quality yes!




CNers have asked about a donation box for Cloudy Nights over the years, so here you go. Donation is not required by any means, so please enjoy your stay.


Recent Topics






Cloudy Nights LLC
Cloudy Nights Sponsor: Astronomics