Seen one for about £800, while these are quite old they do seem to have some good reviews. Ideally it would be used for Moon/planetary stuff with maybe the odd nebula/galaxy (might need the reducer for this?) Not going to do any serious astro photography with it, but might look into a CCD or equivalent in the future. Thoughts please hive mind! (good or bad or meh!) Thanks in Advance!
#Opinions on Celestron NexStar GPS 11
atomic rock
left tree
800? thats a good price considering its 11 inches , if the optics are fine i would go for it tbh
crude orbit
Seen one for about £800, while these are quite old they do seem to have some goo...
It certainly has issues, but id have high alert at 800 quid for an 11" Nexstar. Look out to not get scammed.
Its a pretty good deal truth be told. You can get a reducing corrector (expensive !!) from starizona that does a pretty good job to make it more DSO compatible.
atomic rock
Thanks both! Have messaged them to see if it is legit 🙂
Aside from sticking my eye to it, is there anything specific I can do to check the optics?
atomic rock
(well the seller seems legit, will be meeting them tonight to check it out)
crude orbit
Aside from sticking my eye to it, is there anything specific I can do to check t...
Inspect for any mold, scratches or cleaning residuals on the optics
Otherwise you can do a startest but that isn’t very doable when it’s not clear nor dark
atomic rock
Well they agreed for me to come round late so I could check it
They said the only issue they had was when they tried to set it up using the GPS they couldn't get it to pick up properly so it wouldn't find objects via the handset etc. Feels like a wetware issue possible something amiss with the GPS
but for the money still seems OK, if it works 🙂
crude orbit
They said the only issue they had was when they tried to set it up using the GPS...
I think you may be able to connect the mount to a laptop and then use the laptops gps
atomic rock
Yeah I used to use stelarium (sp?) back in the day
I am all for remote control of the scope while in the warm somewhere 🙂
atomic rock
Welp, I bought it. It's quite large... The wife is not impressed 😅
There is a collimation issue as the stars I observed had a slight tail on them
crude orbit
There is a collimation issue as the stars I observed had a slight tail on them
Collimation is generally judged upon best with unfocused stars.
The donuts (at least on axis) should be uniform and the hole should be in the middle
atomic rock
yeah it was while focusing on stars instead of a single point of light they had a slight tail to them. I will attempt to check collimation on the next clear night with something like polaris and see what'swhat. Overall though, quite pleased with purchase.
or are you saying this might not be a collimation issue?
crude orbit
or are you saying this might not be a collimation issue?
It could be something else but it sounds like collimation. You can nail that down best with an unfocused bright star
atomic rock
One last question (well, I hope!) the reducing corrector you mentioned, is that the same as a focus reducer? Celestron do one for quite a bit less
Celestron 94175
crude orbit
One last question (well, I hope!) the reducing corrector you mentioned, is that ...
The Celestron Focal Reducer is absolute buns
Id go as far as calling it horrible
