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  #41  
Old 25-03-2011, 03:30 PM
robz (Robert)
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Thank you Jennifer
Here's a wider shot where it's obvious I need more counter weights!

Rob.
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  #42  
Old 28-03-2011, 01:09 PM
robz (Robert)
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Hi folks!
Over in the cloudy nights forum, some members have suggested that I change the original visual back (1 1/4 inch) to a full size 2 inch one from A.P.

Would anyone like to comment on this, or has actually changed to a larger visual back that can advise if this is worth doing?

My largest diameter e.p field stop is a bit over 1 1/4 inch and I wont be doing any photography with huge CCD sizes, so I'm a bit confused at the moment.
Rob.
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  #43  
Old 28-03-2011, 03:22 PM
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GrampianStars (Rob)
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Post Eye Opener

Absolutely!
I use the Peterson Eye Opener
http://www.optcorp.com/product.aspx?pid=2404
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  #44  
Old 28-03-2011, 03:55 PM
casstony
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Originally Posted by robz View Post
My largest diameter e.p field stop is a bit over 1 1/4 inch and I wont be doing any photography with huge CCD sizes, so I'm a bit confused at the moment.
Rob.
You won't see any benefit unless you wanted to use low power wide field eyepieces. (field stops greater than 38mm).

If you did decide to change the visual back you might consider putting the money towards a Starlight Instruments crayford focuser instead.
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  #45  
Old 28-03-2011, 06:38 PM
robz (Robert)
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I doubt that the largest field stop I have is greater than 38mm, but I'll have to check.

A good Crayford may be on the cards one day, but at the moment I'm aiming for an astro video cam (Mallincam)as I have been interested in this for some time now.
Coming in at a close second is spectroscopy, but it's got a lot of brick walls to climb to get anything useful that doesn't cost a fortune.

Rob.
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  #46  
Old 28-03-2011, 07:01 PM
AndrewJ
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Quote:
Over in the cloudy nights forum, some members have suggested that I change the original visual back (1 1/4 inch) to a full size 2 inch one from A.P.
I got the 2" AP visual back and love it for being able to swap between stuff quickly without tooling. It does extend the image train a bit more than the Peterson unit, and it is heavy ( not a prob for a 12" that is nose heavy already ),
but it accepts 2" fittings if you do want to operate without the meade microfocusser.

Andrew
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  #47  
Old 29-03-2011, 01:20 PM
robz (Robert)
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Thanks Andrew.

I checked my 70 degree 26mm E.P this morning and it has a 30mm field stop.

I doubt that I'll be wanting anything with a longer focal length for the present time, but it's good to know that after a certain diameter the field stop size will be important.

The skies here in Perth have been weird over the last few nights..........sometimes cloudy, but mostly hazy............which can be worse.

I'm dying to get a look at Saturn but it still rises a bit too late for me at the moment, and I have a large high house to the East of me which doesn't help.

I'm anticipating that planets will be awesome through this scope when seeing permits.

Rob.
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  #48  
Old 02-04-2011, 02:04 PM
issdaol (Phil)
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Hi Robz,

Nice to see the beast has finally arrived

I hope you are having a good time with it.

Cheers
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  #49  
Old 02-04-2011, 04:44 PM
robz (Robert)
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Originally Posted by issdaol View Post
Hi Robz,

Nice to see the beast has finally arrived

I hope you are having a good time with it.

Cheers
G'day Phil!

She's a real beauty!

Soon Saturn will be on the cards and it's here that I will begin to start some serious observing as that's my main interest - planetary.

Deep sky is incredible...................it keeps on amazing me each time I set it up.

Hoping to get a good astro video cam to use with not only the DSO, but some planetary capture also.

Fun times ahead!

Cheers,
Rob.
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  #50  
Old 06-04-2011, 02:58 PM
robz (Robert)
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Went outside last night to turn off the front lawn reticulation system and................................ I seeeeeeeeeeeeeee youuuuuuuuuuuuu.................... .SATURN!!!!!....................... ..........................''THIRD LIGHT - PLANETARY''........................ .......COMING SOON !!!!!!!

But so is some brief bad weather................typical
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  #51  
Old 26-04-2011, 09:52 PM
robz (Robert)
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Originally Posted by robz View Post
Went outside last night to turn off the front lawn reticulation system and................................ I seeeeeeeeeeeeeee youuuuuuuuuuuuu.................... .SATURN!!!!!....................... ..........................''THIRD LIGHT - PLANETARY''........................ .......COMING SOON !!!!!!!

But so is some brief bad weather................typical
FINALLY!......................but only briefly, I managed a 15 minute session looking at Saturn before the clouds rolled in............same thing...........a slight fogging up of stars, then a thin, visible cloud bank invading!
I started off at 108X..........and quickly decided on bumping up the power to 380X.
Anyhow, what I saw can only be described by this :
NEVER!.........and I repeat ''never'' in all the scopes I have owned or looked through, have I seen Saturn look so pin sharp that even my wife had a peek and came out with that famous phrase that we all love to hear:'' oh wow.............it looks like a picture.........I can't believe it''.
The temperature difference must have been minor between inside the house and outside because the scope only had a 1.5 hour equalization period outside before I started observing.

The seeing must have been VERY good also as the image of the great ringed planet was indeed like a high quality photo............very sharp, color graduations on the surface were easily seen as well as some banding.
Unfortunately I did not get to study the ring system as the clouds made this impossible in no time at all.

I can now clearly and confidently say that the optics on these Meade ACF SCT's are absolutely outstanding

Last edited by robz; 26-04-2011 at 10:03 PM.
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  #52  
Old 26-04-2011, 10:51 PM
issdaol (Phil)
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Sounds great rob :-)

I wish I could swap my Canberra skies for W.A. Skies again :-(
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  #53  
Old 27-04-2011, 10:31 AM
robz (Robert)
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Hi Phil, I'm in suburban Spearwood which has it's fair share of light polution.

On this particular peek at Saturn, the scope was pointing over the top of the neighbour's house who had people over and happened to have all his backyard lights on including those stupid old fashioned full sized coloured tungsten globes!
The neighbour behind me had his backyard light on as well. He left it on all night and was never outside!!!

I had some half bricks ready to go, but my wife stopped me!.............she couldn't stop the profanities I mumbled to myself though.

Fortunately I was only doing planetary that night............D.S.O. would have been out of the question.

Know what you mean about the skies over here............you don't need a packed lunch and a keg to get you to a dark site

Rob.
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