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

What is this scope?

  • Please log in to reply
8 replies to this topic

#1 dpaigen

dpaigen

    Explorer 1

  • -----
  • topic starter
  • Posts: 52
  • Joined: 30 Jul 2019

Posted 17 September 2019 - 09:42 AM

I bought it in the mid 90s but, as you can see from the picture, the OTA isn't 1000mm long.  I suspect there may be a barlow at the bottom of the focuser tube.  Does that mean I have an f/4.4 mirror and lots of coma?  Can barlows add chromatic aberration?

 

For those having trouble with the picture: dia 114mm, fl 1000mm, f/8.8, 460mm optical tube, newtonian reflector.

 

Thanks,

-David

 

Attached Thumbnails

  • shorty-reflector.jpg

  • Sky Muse likes this

#2 Mitrovarr

Mitrovarr

    Mercury-Atlas

  • -----
  • Posts: 2756
  • Joined: 12 Sep 2004
  • Loc: Boise, Idaho

Posted 17 September 2019 - 09:47 AM

That looks an awful lot like a lens-in-the-focuser Bird-Jones scope. You'll be able to tell if it is because it will have a barlow-like lens in the bottom of the focuser drawtube.

 

A lot of people really dislike them, but I think they're ok once you figure out how to collimate them correctly.



#3 Cali

Cali

    Viking 1

  • *****
  • Posts: 991
  • Joined: 21 Aug 2018
  • Loc: Bay Area

Posted 17 September 2019 - 09:51 AM

Bird-Jones scope discussed on CN.

 

- Cal



#4 J A VOLK

J A VOLK

    Apollo

  • *****
  • Posts: 1074
  • Joined: 24 May 2006
  • Loc: So. Cal.

Posted 17 September 2019 - 09:51 AM

Definitely a Bird-Jones as Mitrovarr describes

#5 dpaigen

dpaigen

    Explorer 1

  • -----
  • topic starter
  • Posts: 52
  • Joined: 30 Jul 2019

Posted 17 September 2019 - 10:19 AM

That was fast.  You folks are awesome!  Thanks, -David



#6 Mitrovarr

Mitrovarr

    Mercury-Atlas

  • -----
  • Posts: 2756
  • Joined: 12 Sep 2004
  • Loc: Boise, Idaho

Posted 17 September 2019 - 10:22 AM

There was a really good thread recently where Sky Muse took a Celestron Powerseeker 127 (another Bird-Jones) and massively overhauled the scope physically. It might give you upgrade ideas or provide collimation help.

Edited by Mitrovarr, 17 September 2019 - 10:23 AM.


#7 SeattleScott

SeattleScott

    Fly Me to the Moon

  • *****
  • Posts: 5869
  • Joined: 14 Oct 2011

Posted 18 September 2019 - 11:53 AM

I had one. Edges very soft with 32 Plossl. Coma I believe. Cleaned up fairly well with my LVWS so it isn’t a bad scope if you can afford to spend more on each eyepiece than the scope itself. On the bright side the tube is airline portable. I even flew to Grand Canyon with it. Unfortunately forgot my eyepieces...

Scott

#8 Sky Muse

Sky Muse

    Fly Me to the Moon

  • *****
  • Posts: 7015
  • Joined: 26 Oct 2012
  • Loc: Mid-South, U.S.

Posted 18 September 2019 - 06:02 PM

Synta still makes that telescope/kit, and in the current guise of the "AstroMaster" 114EQ...

 

https://www.celestro...114eq-telescope

 

Although I'm not absolutely certain that yours was made by Synta, and way back when.  Actually, yours is not that dated.

 

I had been wanting a "Bird Jones" for quite some time, and I finally got one last February.  I wanted the "PowerSeeker" 127EQ, and for its larger aperture.  Unlike most purchasers, beginners, I bought mine on purpose. grin.gif



#9 Mitrovarr

Mitrovarr

    Mercury-Atlas

  • -----
  • Posts: 2756
  • Joined: 12 Sep 2004
  • Loc: Boise, Idaho

Posted 18 September 2019 - 07:29 PM

If they shipped like yours is now, people would buy them on purpose.


  • Sky Muse likes this


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