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Author Topic: hi all what scope ahhhhh vx mount 9.25 or hd edge 8 celestron or something else  (Read 5018 times)

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Offline carper1325

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 :'( hello all first proper post here goes it s a what scope question
  ive been out of astro imaging for a few years now and i have the chance now to have another shot at it  .  never enough time before  anyway  i like to image the planet s etc  but maybe later i will go deep space .  i have the chance now to buy either  or
Celestron C9.25 SCT VX GOTO   or    Celestron C8 Edge-HD VX GOTO      unfortunately i cant have both    ive been told and looked at em in the pictures and found that they both perform well for astro imaging   dso and planets    as this is a specialised forum i thought my nest bet was to ask  so whatdya think ???? colin from the very darkest wettest part of Cornwall  its got to be portable as i might try a little car ops with it also im knocking on a bit and can no longer carry gert heavy things about in the dark   colin

Online chris.bailey

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Colin

I have very limited experience of the Edge series but the 9.25 is supposed to be the jewel of the series for imaging and suitable for Hyperstarring for faster deep field. Alternatively the AstroPhsics focal reducer is supposed to work well with it to tame that native f/10. The focuser on the Edge series is a little suspect and worth looking at the Feathertouch upgrade.

Very little feedback on the Advanced VX, so far it is promising, but I would be weary of using one for long exposures at those sort of focal lengths.

Chris

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Offline Einari

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Like Chris said 9.25 is better suited for Hyperstar imaging.
But Hyperstar is a bit pricey (£850) so cheaper (and easier?) to use 'old school' focal reducers for wider/faster imaging.
Looked at VX load capacity and found this Payload Capacity - 30 lbs (14 kg).
Conservative imaging rule says that realistic weight to use is half of this.
That speaks for C8 but I'm not sure if you start with planetary (and Hyperstar imaging is more forgiving in that department).
Tapio

Celestron C8, C9.25" & Hyperstar, iOptron CEM60-EC, TS 80 triplet,  Coronado PST, SXV-694,  ASI120MM/ASI174MC Cool

Offline carper1325

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hi i shall start with planets and our moon first for a while year or two lol but i just want to be able to go dso when im back up and running is the neximage ok i realise it has a comos chip they r a lot more up to date now than they were i think focal length on 9.25 is about 2500 so i was thinking a 2x barlow lens and a 2.5 0r 3 x powermate  both tele view    years back i used an extension tube with a 2x barlows lens i used to pull the tube on both as far back out as pos to gain a higher foacal length

Offline carper1325

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thanx very much for your imput lads its been great

 

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