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Greymouser

Celestron 6" SCT, different weights?

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I have been looking to get a compact travel scope for a while and seem to be settled on a 5" SCT from Celestron weighing 6lbs. However I then noticed That the 6" SCT only weighs in a four pounds more, tempting.  https://www.rothervalleyoptics.co.uk/celestron-c6-xlt-optical-tube-assembly.html

Thing is that not all versions of the 6" appear to be the same weight. The SE and upcoming SLT  versions both weigh in at ( OTA only, ) 8lbs: https://www.rothervalleyoptics.co.uk/celestron-nexstar-6-slt-goto-telescope.html

Then there is the upcoming Astro Fi version which claims it is going to weigh in at  ( OTA only, ) 4.8lbs! https://www.rothervalleyoptics.co.uk/celestron-astro-fi-6-sct-wifi-telescope.html

I had assumed that each 6 inch SCT , from the same manufacturer would be essentially the same OTA, with just a different paint job, but according to the above links, the Astro Fi version, has an OTA less than half the weight of the C6!

What is going on? Can anyone explain? Is it just a typing error, somewhere along the line? If so it is not just Rother Valley which has the error. Because in other sizes, there is little difference in weight of the different versions, I think half a pound or so.

Can anyone explain to stupid me please? I mean if the Astro Fi 6" is going to be lighter than the C5, it's a no brainer, eh? 🙄

 

 

 

Edited by Greymouser

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As no one here can or wants to answer my question, I pursued it with Rother Valley Optics, which is perhaps where I should have gone in the first place. ( I just preferred to rely on the experience/independence, of those on this forum, never mind that the beginner section seemed a logical place for my question. ) Anyway, just to tie up a loose end and to make sure anyone who wonders about this in the future, who comes across this thread, finds an answer: Rother Valley say there is no difference in the optics, at all, but in their words: " In lightweight systems such as the SLT and Astro Fi etc, they may have changed the build design or quality to reduce the overall weight of the systems. "  I am not sure this reassures me, other than to avoid the lighter OTA, just in case... 🙂

 ( Please forgive the bump and combine the two posts if it seems appropriate. 🙂 )

Edited by Greymouser

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I find it difficult to believe that this latest version of the C6 OTA has had over 3lb shaved off the weight of the previous ones. The originals were designed to be as light as is practically possible, a 3lb saving would take at least a CF tube and leaving out either the primary or corrector to achieve.    :dontknow:

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46 minutes ago, happy-kat said:

Has it helped in your travel kit dilemma?

Yes, I think I will now be getting a 6 lb C5, though one of those versions is half a pound heavier...

I too found it difficult to believe too Peter, especially considering the Astro Fi six inch version is in fact less than half the weight of the C6 version OTA. 4.8 lbs compare to the expected 10 lbs. Rother Valley say there is no difference at all in the optics, which to be honest is hard to understand. The Asto Fi six inch version is in fact lighter than the C5 spotting scope! I am baffled as to their logic. :huh2: ( Celestron's ? )

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Just saw this thread...if you ever do come across a 4.8lbs C6 it would be very nice!!! Can't believ the answer you were given...have you perhaps tried asking this to other vendors of the Astro fi version?

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The OTA of the C5 in the same astro-fi series weighs 6.8 lbs (3.08 kg) according to Celestron's figures. It is highly unlikely that the C6 in the series will weigh less than 8 lbs.

8lbs also seems to be the weight limit for the astro-fi mount used on these models.  Anyway, the C6 model has no price and no availablilty, so why argue about a piece of vapourware?

 

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4 hours ago, festoon said:

have you perhaps tried asking this to other vendors of the Astro fi version

The David Hinds site also says the weight of the Astro Fi OTA is 4.8 lbs:  https://celestron.uk.com/productinfo.php/telescopes/astro_fi_series/astro_fi_6_sct/4221

If you scroll down you will see it there too. Flo do not give the separate weight of the OTA, just say the total weight is 6.7 KG, which is still a very light weight setup.  Perhaps FLO also doubt the alleged weight of the OTA separately? :unsure:

I suspect you are right Michael and I am reminded of something my Grandma always advised: " If it sounds to good to be true, it probably is... " 🙂

I have never seen a telescope described as " vapourware. " But hey ho, there you go. As I have already stated, it does seem way to good to be true. However I doubt it is fiction, just the advanced warning/advertisement, for what on the face of it are attractive setups. I find it hard to believe, ( though not imposible, ) that Flo; Rother Valley Optics and David Hinds are all telling fibs. Especially considering this on the Celestron website, which also seems to state the Asto Fi 6" OTA, will in fact weigh 4.8 lbs.
https://www.celestron.com/products/astro-fi-6-schmidt-cassegrain-telescope

I am not trying to argue with anyone, I just want clarification, is that asking too much?

Edit: It is odd though that Celestron say the Astro Fi 5 weighs 6.8 lbs, which is in fact heavier than the ordinary C5! They also say the Fi 5 setup is heavier than the Fi 6:ohmy: Maybe got the two specifications the wrong way around.

( I suspect that Celestron need to employ a better proof reader... :rolleyes2: )

 

 

 

Edited by Greymouser
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Apologies about what may be inferred as a blatant bump, but another loose end... :blush:

However, the six inch  Asto Fi is now a reality with Rother Valley Optics offering at £649, though not in stock yet: https://www.rothervalleyoptics.co.uk/celestron-astro-fi-6-sct-wifi-telescope.html

The five and six inch SLT are also now with a quoted price; £ 549 for the five inch and £ 649 for the six: https://www.rothervalleyoptics.co.uk/celestron-nexstar-5-slt-goto-telescope.html

https://www.rothervalleyoptics.co.uk/celestron-nexstar-6-slt-goto-telescope.html

Neither are expected in stock before next month, according to Adam, at RVO, ( fingers crossed, ) which is nice and will give me time to persuade my wife of my need... :rolleyes2:

Now all I need to do is decide which one to go for, or maybe just the OTA? Ah well, there are worse problems to have. :undecided:

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Hi

if it was me buying it and I had the money  I would get the 6" nexstar

has I have the 6" evolution and you would get better views with the 6""

over the 5" and I got mine from Adam at RVO

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2 minutes ago, gtis said:

I would get the 6" nexstar

I assume you mean the Nexstar SLT, which weighs in at 18lbs, altogether? The Nexstar Evolution at 35.4 lbs, for the entire kit, is probably a bit much as a backpack scope...😉

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