Go Back   IceInSpace > Equipment > Eyepieces, Barlows and Filters

Reply
 
Thread Tools Rate Thread
  #1  
Old 07-06-2020, 04:44 PM
BruceF13 (Bruce)
Registered User

BruceF13 is offline
 
Join Date: Jun 2020
Location: Kew East
Posts: 6
Baader Hyperion 8-24 Zoom Eyepiece and Barlow 2.25x

Hi all,

I'm interested in any experiences with the zoom eyepiece by itself and also with the Baader 2.25x Barlow.

I have a Celestron Nexstar Evolution 8, and would also like to know how people think the eyepiece/Barlow would go with this scope.

One piece of advice I have been given is that the Barlow may not be necessary because it would take the magnification on the 8se from 85x - 254x to 191x - 571x and seeing conditions would have to be very good to get non blurry images.

As a relative beginner, I would also like some advice on the pros and cons of using high magnification like this.

Thanks in advance!

Cheers.
Reply With Quote
  #2  
Old 07-06-2020, 05:14 PM
Merlin66's Avatar
Merlin66 (Ken)
Registered User

Merlin66 is offline
 
Join Date: Oct 2005
Location: Junortoun Vic
Posts: 8,904
Bruce,
I use the Hyperion Barlow.
It’s a very good Barlow, which allows T thread connections.
Independent of the zoom, it’s a good accessory to have.
Reply With Quote
  #3  
Old 07-06-2020, 05:18 PM
gaseous's Avatar
gaseous (Patrick)
Registered User

gaseous is offline
 
Join Date: May 2016
Location: Brisbane
Posts: 782
Welcome Bruce,


The Baader8-24 zoom is a well respected zoom eyepiece. The field of view at the 24mm setting is a little on the narrow side, but the overall usability and quality is top shelf. At 24mm you're probably better off going for a normal widefield eyepiece. If your scope is F10, I can't see the barlow being a requirement - you'll have 85x - 254x without it. A very general rule for maximum magnification is 2x the aperture of your scope in mm, so in your case, 2 x 200 = 400x. In reality, you'll rarely be hitting 400x without some serious deterioration of the viewing, so money on the barlow might better be spent on an eyepiece in the 5-6mm range if you think you'll want extra magnification, or something for widefield in the 24-30mm range. Depends on what you plan to be watching I guess.
Reply With Quote
  #4  
Old 07-06-2020, 05:20 PM
rrussell1962
Registered User

rrussell1962 is offline
 
Join Date: May 2014
Location: Brisbane
Posts: 493
It's a decent zoom but you won't use the 2.25 Barlow with it on an 8 inch SCT. You may need a wider FOV for low power. Just saw the posts below - agree with everything. BTW have a Nexstar 8SE, a few eyepieces including the Hyperion Zoom and Barlow.
Reply With Quote
  #5  
Old 07-06-2020, 06:26 PM
BruceF13 (Bruce)
Registered User

BruceF13 is offline
 
Join Date: Jun 2020
Location: Kew East
Posts: 6
Quote:
Originally Posted by Merlin66 View Post
Bruce,
I use the Hyperion Barlow.
It’s a very good Barlow, which allows T thread connections.
Independent of the zoom, it’s a good accessory to have.
Thanks very much for your reply..

That's one of the reasons I was looking at it. I have a T adapter for my DSLR, which I got wirh the telescope, but it looks li need another adapter for it to work with the Barlow, the Baader Hyperion Eyepiece T-Adaptor (M43-T).

Cheers.
Reply With Quote
  #6  
Old 07-06-2020, 06:29 PM
BruceF13 (Bruce)
Registered User

BruceF13 is offline
 
Join Date: Jun 2020
Location: Kew East
Posts: 6
Quote:
Originally Posted by rrussell1962 View Post
It's a decent zoom but you won't use the 2.25 Barlow with it on an 8 inch SCT. You may need a wider FOV for low power. Just saw the posts below - agree with everything. BTW have a Nexstar 8SE, a few eyepieces including the Hyperion Zoom and Barlow.
Thanks for the reply.

What about for use with the T adapter for photography?

Or can I do that with the eyepiece?
Reply With Quote
  #7  
Old 07-06-2020, 06:32 PM
BruceF13 (Bruce)
Registered User

BruceF13 is offline
 
Join Date: Jun 2020
Location: Kew East
Posts: 6
Quote:
Originally Posted by gaseous View Post
Welcome Bruce,


The Baader8-24 zoom is a well respected zoom eyepiece. The field of view at the 24mm setting is a little on the narrow side, but the overall usability and quality is top shelf. At 24mm you're probably better off going for a normal widefield eyepiece. If your scope is F10, I can't see the barlow being a requirement - you'll have 85x - 254x without it. A very general rule for maximum magnification is 2x the aperture of your scope in mm, so in your case, 2 x 200 = 400x. In reality, you'll rarely be hitting 400x without some serious deterioration of the viewing, so money on the barlow might better be spent on an eyepiece in the 5-6mm range if you think you'll want extra magnification, or something for widefield in the 24-30mm range. Depends on what you plan to be watching I guess.

Thanks for that. Rookie question, but why does the viewing deteriorate at higher magnification?

Is it more affected by atmospheric and viewing conditions, or just that it's harder to focus?

Cheers.
Reply With Quote
  #8  
Old 07-06-2020, 06:53 PM
rrussell1962
Registered User

rrussell1962 is offline
 
Join Date: May 2014
Location: Brisbane
Posts: 493
Quote:
Originally Posted by BruceF13 View Post
Thanks for the reply.

What about for use with the T adapter for photography?

Or can I do that with the eyepiece?
AP is not really my thing so I think it is best if I leave the issue of photography to people who might actually know what they are talking about! My Hyperion Barlow came with a T2 adapter. I have had a play with the bits in my box and found a part labelled Hyperion M43 T2 adapter that threads to the top of the Hyperion Zoom and my Canon T adapter screws successfully to that. Whether it will give acceptable results I have no idea.
Reply With Quote
  #9  
Old 07-06-2020, 07:45 PM
gaseous's Avatar
gaseous (Patrick)
Registered User

gaseous is offline
 
Join Date: May 2016
Location: Brisbane
Posts: 782
Quote:
Originally Posted by BruceF13 View Post
Thanks for that. Rookie question, but why does the viewing deteriorate at higher magnification?

Is it more affected by atmospheric and viewing conditions, or just that it's harder to focus?

Cheers.

The former - unless the conditions are fantastic, you get to a point where you're just magnifying all the turbulence caused by upper atmosphere air currents, water vapour/dust particles, etc. This may present as an inability to focus, but you're really just zooming in too far into the "murk" to enable a clear picture.
Reply With Quote
  #10  
Old 07-06-2020, 08:03 PM
Merlin66's Avatar
Merlin66 (Ken)
Registered User

Merlin66 is offline
 
Join Date: Oct 2005
Location: Junortoun Vic
Posts: 8,904
Bruce, all the necessary adaptors, other than an T2 ring for the camera come in the box.
I use mine for solar imaging an ED80 with the ASI 1600 camera. Works well.
Reply With Quote
  #11  
Old 07-06-2020, 08:27 PM
BruceF13 (Bruce)
Registered User

BruceF13 is offline
 
Join Date: Jun 2020
Location: Kew East
Posts: 6
Quote:
Originally Posted by rrussell1962 View Post
AP is not really my thing so I think it is best if I leave the issue of photography to people who might actually know what they are talking about! My Hyperion Barlow came with a T2 adapter. I have had a play with the bits in my box and found a part labelled Hyperion M43 T2 adapter that threads to the top of the Hyperion Zoom and my Canon T adapter screws successfully to that. Whether it will give acceptable results I have no idea.
Thanks! Sounds like it be able to use my existing T2.

Appreciate the info.

Cheers.
Reply With Quote
  #12  
Old 07-06-2020, 08:28 PM
BruceF13 (Bruce)
Registered User

BruceF13 is offline
 
Join Date: Jun 2020
Location: Kew East
Posts: 6
Quote:
Originally Posted by Merlin66 View Post
Bruce, all the necessary adaptors, other than an T2 ring for the camera come in the box.
I use mine for solar imaging an ED80 with the ASI 1600 camera. Works well.
Thanks! One less thing I need to buy.

Cheers.
Reply With Quote
  #13  
Old 16-06-2020, 05:12 AM
Don Pensack's Avatar
Don Pensack
Registered User

Don Pensack is offline
 
Join Date: Aug 2006
Location: Los Angeles
Posts: 501
Quote:
Originally Posted by BruceF13 View Post
Thanks for that. Rookie question, but why does the viewing deteriorate at higher magnification?

Is it more affected by atmospheric and viewing conditions, or just that it's harder to focus?

Cheers.
An analogy:
Viewing stars is like looking at the pebbles at the bottom of the edge of a pond. When the water is still, you see the pebbles quite sharply. When there is a bit of water movement, you see the pebbles appearing to move back and forth and only be clear for short periods of time. When the water is turbulent, you can barely tell there are pebbles there at all.
The stars are the pebbles, and the atmosphere is the water of the pond covering them.
Reply With Quote
  #14  
Old 17-06-2020, 03:45 PM
jahnpahwa (JP)
Registered User

jahnpahwa is offline
 
Join Date: Apr 2020
Location: Canberra, AUS
Posts: 593
I'll throw in here that I've just started using my DSLR on my baader zoom. To achieve focus I couldn't just use the T2 adapter, I needed another 20mm or so of backfocus, which i achieved with a spacer. Baader have an adjustable one that might be good, but I used what I already had which is a GSO ring. I'm not sure if the kit (with barlow) also includes everything necessary, I bought mine stand-alone and i dont think it even included the T2 adapter.
Reply With Quote
  #15  
Old 17-06-2020, 05:06 PM
Merlin66's Avatar
Merlin66 (Ken)
Registered User

Merlin66 is offline
 
Join Date: Oct 2005
Location: Junortoun Vic
Posts: 8,904
J-P,
The Barlow has the 1.25” nosepiece and a T thread connection. A T2 adaptor is a variable depending on the camera being used.
I have mine fitted to an ASI 174 or ASI 1600.
Reply With Quote
Reply

Bookmarks

Tags
8se, baader, barlow, celestron, eyepiece

Thread Tools
Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT +10. The time is now 04:49 AM.

Powered by vBulletin Version 3.8.7 | Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Advertisement
Testar
Advertisement
Bintel
Advertisement