Celestron Rowe-Ackermann Astrograph

[harry page]

So New scope

wonder how many years I will need to get this working properly

Looks nice though

Harry

[Earl]

I think if anyone can you can Harry, what ccd are you planning?

[harry page]

Hi

I was going to try my  sxvf m25 OSC camera to start with to avoid any filter problems , but will try the H35 to see if it can cover it

Need to give some thought on how to do RGB with the H35

Harry

[Chris]

Nice one Harry, there will probably be loads of people waiting to see how you get on

[Earl]

Hi

I was going to try my  sxvf m25 OSC camera to start with to avoid any filter problems , but will try the H35 to see if it can cover it

Need to give some thought on how to do RGB with the H35

Harry

CAn you use single filters? a pain I know but..

[r3i]

Congrats on the new scope.  Will be interesting to see how it performs.

[harry page]

Hi

I am waiting for a mounting bar to come , but to get me going FLO have lent me a saddle

So it all set up on the beast , all we need now is some clear skies for testing

Harry

[sloz1664]

Harry, that's one hell of a setup. I'm anxious to see what it can do. 
So you must be pacing the floor.

Here in Nottingham it's nice and clear. Hope it's the same for you 

Steve

[harry page]

Hi

Clear - let me see - no clouds

Harry

[ollypenrice]

My review scope took a nasty physical hit at some point in its life and will have to go back. However, it is a bit of a beast in itself. I was thinking, size-wise, C11 - but it is a bit bigger than that! On Harry's big scope the Celestron looks small but it makes my 10 inch Meade SCT look like a finderscope.

Harry is the ideal person to get this moving.

Olly

[harry page]

Hi

Yes its a substantial scope , not suitable for a eq3 mount

Harry

[ollypenrice]

Hi

Yes its a substantial scope , not suitable for a eq3 mount

Harry

Wott??? It's all I got, 'Arry. Lend us a Paramount, will ya?

Olly

[Astroscot2]

Congrats on the new scope Harry, is that yellow banana now for sale? ☺

[harry page]

Hi

Sorry young man I am waiting for that mounting bar , so I can mount the tak and the celestron side by side  for a bit

of multi camera action

Harry

[Astroscot2]

Thats just being greedy Harry ;-)

[Earl]

Harry I do like that beast of a mount, and it sure delivers the goods, how far do you think you can push it?

[harry page]

Hi

I have sat on it and it still slews ok

Harry

[harry page]

Hi

Do to various reasons , not had time to try out scope and I am waiting for various bits , like a dew shield special adaptors etc

But I threw on my sxvf m25 tonight and did 5 60 secs subs ( Unguided)  and below is the result

no processing just debayered and stacked  , left it like this to show the vignetting as well

For a first go I am pleased with the flatness of the field , not perfect but may be a bit of camera sag , but would most people would be happy with that though

The focuser is very fine -in theory great as the depth of is tiny , strangely I need to get used to this as when manually focusing I like to pop in and out of focus to

get perfect focus and large movements of the focuser are required for this --not a complaint just different

My main problem tonight was the primary mirror dewed up in 10mins flat , anybody got any idea on how to stop this ?

Harry

[michael8554]

Nice!

But don't worry with how to mount a filter wheel, get two more RAA's and make a Gina-style  RGB Triple   :->

Michael

[Chris]

Yep looks fairly flat to me

Your primary dewed up? isn't this a sealed system like the SCT then?

[harry page]

Yep looks fairly flat to me

Your primary dewed up? isn't this a sealed system like the SCT then?

Hi

Yes fully sealed ,no where to poke a hair dryer

Harry

[Chris]

Would a dew strap around the bottom of the tube work perhaps?

[harry page]

Would a dew strap around the bottom of the tube work perhaps?

I hope this might work -- hoping someone might have experience

Harry

[harry page]

Hi

Here is my view of the scope if you missed it http://www.harrysastroshed.com/Rasa.html

Harry

[Earl]

Hi

Here is my view of the scope if you missed it http://www.harrysastroshed.com/Rasa.html

Harry