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Orion 7.2-21.6mm Zoom Telescope Eyepiece

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#1 doc_cj

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Posted 15 April 2021 - 08:02 PM

Been thinking of buying some more lenses and came across this on the Orion site. I've wondered why there isn't a common telescoping lens, much like what is used with cameras, and maybe now Orion has given us one. Anyone actually buy or use one of these? Would love a review on the product. 

 

My thoughts ... for what they are worth.

 

Sounds like a great idea for someone who wants more than the standard 7-8-9mm eyepieces. I know that with my Nikon cameras I have a selection of lenses that cover the 24-50mm range, 55 - 200mm, 200-700, and a big honker that is 500 to 1000mm. If this Orion zoom is as good as my Nikon, Nikko, or Tamron lenses then we've got a real winner here. 

 

What's the word?


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#2 ShaulaB

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Posted 15 April 2021 - 08:13 PM

I use this eyepiece with an outreach telescope. The field of view of zoom lenses is not wide. AFOV ranging from the 40's to the 50's in degrees is the norm unless you want to really splurge on a high end unit. Also, while the center of the field of view might come to good focus, the edges may not be satisfactory. That's why it's an outreach eyepiece. The general public is not that discerning when taking their first ever views of the Moon, Jupiter, or Saturn.

 

The popularity of wide-field eyepieces keeps many from wanting to have the zoom you describe.



#3 areyoukiddingme

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Posted 15 April 2021 - 09:02 PM

Orion claims 42 - 65 here (I assume we are talking about the same model, this one may be newer):

 

https://www.telescop...ce/p/132740.uts

 

APM is getting ready to release their 7.7 - 15.4 zoom, and Markus' first light went well with some strong claims being made about optical quality. Possibly out in June . . . I'd hold out if it's as good as supposed with constant 75 degree field.



#4 wrnchhead

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Posted 15 April 2021 - 09:25 PM

Zooms are pretty hugely popular lately. Tons of posts about them. I have found for planets and solar, it's my favorite eyepiece. For deep space, not that great. 


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#5 SeattleScott

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Posted 16 April 2021 - 05:46 AM

There was a recent thread regarding this zoom. Seems the advertised AFOV is a bit overstated. Not surprising. Performance seemed pretty solid for a zoom. That’s what I remember anyway. A fine option.

Yes lots of talk about zooms lately. Probably partly due to the boom in stargazing and lack of quality fixed eyepieces available. A lot of people just trying out stargazing right now and just need some affordable gear to tide them by until movie theaters and bars open.

Scott

#6 sportsmed

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Posted 16 April 2021 - 03:17 PM

I have the cheaper Orion 7-21mm E-series and I like it for what it is up to the 16mm setting, the 21mm has too narrow FOV for my liking though. But it makes for great grab n go and for outreach. There has been times where I have only used my zoom and maybe one other EP while out. Not sure how much better this zoom would be compared to mine, you might want to compare. But I have been happy with the optics in my E-series zoom.



#7 SeattleScott

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Posted 16 April 2021 - 05:54 PM

The new one has wider AFOV but it’s more expensive.

#8 aeajr

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Posted 20 April 2021 - 03:08 PM

Been thinking of buying some more lenses and came across this on the Orion site. I've wondered why there isn't a common telescoping lens, much like what is used with cameras, and maybe now Orion has given us one. Anyone actually buy or use one of these? Would love a review on the product. 

 

My thoughts ... for what they are worth.

 

Sounds like a great idea for someone who wants more than the standard 7-8-9mm eyepieces. I know that with my Nikon cameras I have a selection of lenses that cover the 24-50mm range, 55 - 200mm, 200-700, and a big honker that is 500 to 1000mm. If this Orion zoom is as good as my Nikon, Nikko, or Tamron lenses then we've got a real winner here. 

 

What's the word?

Zoom eyepieces are quite common.  I have the SVBony, Celestron and Baader Hyperion 

 

Reports and discussions, for your review. 

 

 

How People use Zoom Eyepieces as Part of the Observing Process
https://www.cloudyni...erving-process/

 

 

Baader Hyperian Mark IV Zoom review   - Quote from the review - 
Overall Impressions
Over the course of testing the Baader Hyperion Mark IV Zoom, the eyepiece
showed itself to be a capable and potent observing tool. Optically it
provided a bright, high contrast, and controlled view that allowed it to
keep up with even premium wide-field eyepieces like the Pentax XWs.
https://astronomycon...ox-january-2018

 

 

New Baader Mark IV 8-24mm Zoom Eyepiece – User reports and discussion
https://www.cloudyni...-zoom-eyepiece/
https://www.cloudyni...good-optically/
http://www.avt-astro...t-real-eyepiece

 

 

Baader Zoom Vs Fixed Eyepieces – Some interesting comments
http://www.cloudynig...l=+baader +zoom

 

Baader zoom vs. Leica Zoom
https://www.cloudyni...es-baader-zoom/

 

 

zoom eyepiece review – Includes Celestron review
Quote from the review:  The Celestron zoom is the bargain eyepiece in this
comparison. Yet, despite its simpler design, its optical quality is
(visually) very close to the other contenders, a tribute to good
manufacturing. There is probably a lesson in there somewhere: execute a
simple design correctly and it may be competitive with a complex design that
is harder to manufacture. (If only we had access to an optical bench, so
that we could "split hairs." -Editor.) The Celestron zoom appears to be well
made, although not in the same class as the premium Tele Vue and Vixen
zooms. The Celestron is not as smooth in operation as the premium eyepieces
and it is noisier when the zoom ring is rapidly turned from 8mm to 24mm.
However, it is much less expensive than the other zooms and performs well,
making it the standout in the "bang for the bucks" arena. If your Chancellor
of the Exchequer is a bit tight with funds, buy the Celestron 8-24mm zoom
http://www.chuckhawk...m_eyepieces.htm

http://www.cloudynig...del-93230-r2106

 

 

Celestron 8-24 Zoom – user discussions
http://www.cloudynig...celestron +zoom
http://www.cloudynig...celestron +zoom

 

Zeiss Zoom ( $645)  Swarovski Zoom ($729) Leica ($850)  comparison
Note these are spotting scope eyepieces adapted for telescope use.
https://www.cloudyni...-zoom-eyepiece/


Edited by aeajr, 20 April 2021 - 03:10 PM.

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#9 LDW47

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Posted 20 April 2021 - 04:23 PM

The new one has wider AFOV but it’s more expensive.

How much wider ? Show us the difference.



#10 doc_cj

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Posted 20 April 2021 - 11:36 PM

WOW ... WOW ... WOW

 

This is some great stuff. thanks to all that posted. Two things this thread has convinced me of:

 

1. I should definitely get  one. 

2. I need to expand my search so that I get the right one. 

 

Again, thanks to all that posted, ever answer contributed and that is greatly apprecated. 



#11 SeattleScott

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Posted 21 April 2021 - 08:16 AM

In that case you might consider getting on the waitlist for the new APM Superzoom. It’s big, and kind of expensive, but it sounds pretty impressive.

Scott


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