Skyline

I wouldn't say that - What telescope is perfect? your always going to be fiddling with something as not everyone's requirements are the same. But saying that I also think SW should have bought out a dedicated reducer for it.

Beautiful Beast, cut it a bit short - otherwise the holiday in April under good skies would have been ideal on the star adventurer.

Thanks for the clouds in Advance.

I think SW need to go back to the drawing board and produce a dedicated reducer for the scope. Someone call me lazy if you wish...

ED72 is a F/5.8 Neil

I took this image of NGC 7789 Star cluster, I use a 1.5mm spacer with the 0.85x reducer making it 56.5mm, I think I might have to add another 0.5mm.

I had a result last night using an additional 1.5mm spacing with a canon 1100d, will post later.

I too was guessing around 57-58mm, I know 55mm does not cut it. As I took a image of the double cluster and I had some aberrations in the corners. I post it up later. I think with the particular draw tube collar I am using the focus will not be a problem (touch wood), we'll see.

The 1100D has a pixel size of 5.2um

Which one is the Dedicated one ? the 0.85x ?

I am thinking of buying some M48 spacer rings so I can test them out with the SW Reducer and a Canon 1100D

Which Flattener did you use may I ask please ?

My setup:

Thats the size of the resolution area

That is a full sensor image of a Atik 314L+

My efforts: Using 55mm spacing on a skywatcher reducer

The 2nd pic shows how much distance +2 mm extra is left when using my low profile adaptor with the reducer and push fit.

You are correct, The thread size on the ED72 draw tube is M54. I Could not reach focus using the standard thick 12mm collar fitted on the ED72 using a SW 0.85x reducer with a 2" pushfit adaptor. I have to use a pushfit adaptor instead of the screw on method due to using a IDAS 2" LPR filter. However I did overcome the focusing issue by replacing the standard collar to a low profile collar which I use on my 130PDS to reduce the draw tube intruding into the light path, which measures 8mm thick compared to the standard collar of 12mm . Cheers.

Any news when the Skywatcher Evostar 72ED is due out ? Thanks

I can see where this is going. This is where I will duck out. Just remember Martin to buy the collimation tools.

Why don't you buy yourself the biggest dob you can handle for planetary views and stop re-inventing the wheel

That looks lots better doesn't it. Most centre spots are quite accurate centered, another way of checking if centered, draw around the mirror using a pencil, cut out the shape of the mirror on a plane piece of paper or a thin film of plastic, fold the paper 2 or 3 times, and make a center hole in the sheet of paper/plastic. Align it with mirror careful so you don't scratch the mirror then check where your centre aligns on the mirror. You could also use a Cats Eye mirror marking template.

check to make sure the clips are not tight on your primary mirror.

Nice 120ED that Jules, I need to buy one - then do away with the newts...

I am after one of those refractors as well, labelled celestron for my ed80