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

A simple enhancement for observational astronomy?

accessories collimation equipment filters observing
  • Please log in to reply
3 replies to this topic

#1 nPAE

nPAE

    Vendor - nPAE Precision Astro Engineering

  • -----
  • Vendors
  • topic starter
  • Posts: 39
  • Joined: 14 Jan 2019
  • Loc: Nottingham, United Kingdom

Posted 30 October 2020 - 11:25 AM

You have the telescope, you have the eyepieces, but the odds are on that the weak link in your gear is your diagonal.

 

Some people say the nPAE Theia90 star diagonal, is the best diagonal they’ve ever seen. Other users have called it the “magnificent zenith of impeccable design”.

 

As well as being CNC machined from a single piece of aircraft grade aluminium, the Theia90 comes complete with zygo report for provenance of the 1/10th wave mirror.

 

Are you a stickler for collimation and want that final tweak of perfection? Tweak on, the Theia90’s mirror is collimatable.

 

Do you enjoy using filters in your observations? The Theia90 has a built in magnetic filter holder. A truly unique feature for a star diagonal.

 

Shipped complete with 3 filter holders and accessories, in its super tough mini Cerberus case, the Theia90 is available from the nPAE retailer network or direct from the United Kingdom.

 

Order before November 15th to guarantee delivery in time for Christmas.

 

https://www.npae.net...-star-diagonal/

 

T90 MZID picture

Edited by nPAE, 30 October 2020 - 11:26 AM.


#2 M11Mike

M11Mike

    Apollo

  • *****
  • Posts: 1,058
  • Joined: 02 Apr 2016
  • Loc: Ballston Lake, NY

Posted 30 October 2020 - 12:18 PM

Looks like a really fine diagonal you have there - but not sure how you can say "odds are" (all of us with any other diagonal) have a "weak link" link in our gear.  There are some really fine diagonals out there with I believe CNC machining, 1/10th wave mirrors, etc.

 

Astro-Physics Max-Brite, Baader Max-Brite, Televue Max-Brite, etc. just a couple that come to mind - some touting supposedly 1/20th wave accuracy mirrors, 99%+ reflectivity dielectric coatings, CNC machined bodies, etc. 

 

Rather doubt that folks like these making such great telescopes, mounts, eyepieces, etc. would put any less emphasis into their diagonals they make.

 

Just my opinion.

 

M11Mike   



#3 mich_al

mich_al

    Fly Me to the Moon

  • *****
  • Posts: 6,086
  • Joined: 10 May 2009
  • Loc: Rural central lower Michigan Yellow Skies

Posted 30 October 2020 - 01:36 PM

Looks like a really fine diagonal you have there - but not sure how you can say "odds are" (all of us with any other diagonal) have a "weak link" link in our gear.  There are some really fine diagonals out there with I believe CNC machining, 1/10th wave mirrors, etc.

 

Astro-Physics Max-Brite, Baader Max-Brite, Televue Max-Brite, etc. just a couple that come to mind - some touting supposedly 1/20th wave accuracy mirrors, 99%+ reflectivity dielectric coatings, CNC machined bodies, etc. 

 

Rather doubt that folks like these making such great telescopes, mounts, eyepieces, etc. would put any less emphasis into their diagonals they make.

 

Just my opinion.

 

M11Mike   

OH, you blew right by the marketing hype!       Keep it up .


Edited by osbourne one-nil, 26 November 2020 - 02:45 AM.


#4 Howard Gao

Howard Gao

    Viking 1

  • *****
  • Posts: 782
  • Joined: 29 Mar 2010
  • Loc: Shanghai, China

Posted 26 November 2020 - 12:58 AM

It will be great if you can share more on comparison between your diagonal / turret and other brands in the market. Thanks.




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





Also tagged with one or more of these keywords: accessories, collimation, equipment, filters, observing



Cloudy Nights LLC
Cloudy Nights Sponsor: Astronomics