Which one

[thommo10]

Hi all

Over the last few months I have been looking for a scope for imaging deep sky objects, I have bought every photon counts, and have read it with interest. The two scopes I have in mind are Sky watcher 200p DS or Evostar 100 ED DS Pro with focal reducer both on a EQ5 pro Synscan.

Your thoughts Please.

[thommo10]

Hi all

nobody got any advice

[nightfisher]

the evostar ED100 would seem a good choice but it is still considered to have to long a focal length for imaging

[thommo10]

Thanks night fisher, yes I do have reservations about the ed 100 but from what I have read apo refactors seem to be the tool of choice when it comes to imaging, I was thinking more of aperture more than enything else I suppose. also the other mount I have been looking at is the celestron cg-5 gt goto?

[nightfisher]

I think it depends on what you want to image, if you plan on making image`s of dep sky and want them as good as some of the top ones you see on here, then what you are looking at probably wont work for you, but the 100ED with focal reducer will still be capable of doing some stuff, and will work well for visual

[faulksy]

dont no anything about imaging but the weapon of choice seems to be the 80mm ed ota

[thommo10]

thanks for the replys guys

It is deepsky objects I want to image so it looks like the 200p ds with a bigger mount such as the neq6? or as Faulksy suggested an ed 80?

[Quatermass]

If you have the funds Eq6 mount without a doubt and 200p would be a nice set up or the ed80.

Sent from my GT-S5670 using Tapatalk

[thommo10]

thanks for your help

Now we have sorted the mount out (eq6) it,s just the scope a 200p ds or ed 80 apo ?

[Gina]

I have the SW 80 ED DS Pro scope and it's a beauty. I took the advice that this is the best scope to start AP with. I'm not disappointed

[catburglar]

ED80 is definitely the way to begin AP.

[frogdr1ver]

Im thinking of the 200p ds as well, i was going for the 80 ed but i want to do some deep sky but i would like a good scope for visual that will last and the 200 seemed a good choice on an heq5?

[thommo10]

thanks for the feed back. if I did go for the ed 80 pro does this mean I can down scale on the mount to say a He q5 or the cg-5 gt ?

[ollypenrice]

the evostar ED100 would seem a good choice but it is still considered to have to long a focal length for imaging

No, the focal length is the focal length. What is wrong with it is the speed, the focal ratio. It is too slow. The faster ED80 is a better DS imaging scope. You simply don't need aperture for imaging, you need a fast F ratio, especially if using DSLRs. CCD cameras can just take longer exposures in slow scopes. DSLRs can't.

The faster Newt has a lot going for it on paper. The difference is that it will need collimating and will be susceptible to the wind, making a hard job harder. If you are up for making a Newt work then the fast F ratio will be good news but the danger is that it will not always be optically on form and you'll lose precious clear sky time.

Personally I don't touch reflectors for imaginig because of the added hassle. (Well, I'm about to change that but only because of the desire to use a focal length not possible in real world refractors!)

Personally (I stress personally) I would go for ED80 and focal reducer and by a very large margin. Others may feel differently.

Olly

[thommo10]

thanks Olly

Food for thought, yes I know what you mean about the collomaton having a 150 f/6 that refuses to collomate because of the fixed primary which had moved out of position I tried to glue it back with silicon but I don't think it went back quite right. So i think I will go for a ED 80 on a HEQ5 or CG-5 GOTO. would I need a field flattener as well as a focal reducer?

[ollypenrice]

thanks Olly

Food for thought, yes I know what you mean about the collomaton having a 150 f/6 that refuses to collomate because of the fixed primary which had moved out of position I tried to glue it back with silicon but I don't think it went back quite right. So i think I will go for a ED 80 on a HEQ5 or CG-5 GOTO. would I need a field flattener as well as a focal reducer?

For a DSLR sized chip you'd need the flattener but it is also a reducer so that's a bob saved! You really don't need an EQ6 to image with an 80mm refractor. The HEQ5 would be fine but wouldn't be future proofed. There is no difference in accuracy.

Olly

[thommo10]

Hi Olly

By future proofed do you mean guide scopes and related equpment ?

thanks to you all for your help by the way.