Go Back   IceInSpace > Equipment > Equipment Discussions
Register FAQ Calendar Today's Posts Search

Reply
 
Thread Tools Rate Thread
  #21  
Old 20-08-2007, 11:16 PM
[1ponders]'s Avatar
[1ponders] (Paul)
Retired, damn no pension

[1ponders] is offline
 
Join Date: Nov 2004
Location: Obi Obi, Qld
Posts: 18,778
Quote:
Does that mean if I use the polar scope I have to do the dishes
Of course! It will also mean that you will have to wait for it to get dark enough to see Octans. In that time you will be able to get a couple of loads of washing in as well
Reply With Quote
  #22  
Old 20-08-2007, 11:23 PM
ballaratdragons's Avatar
ballaratdragons (Ken)
The 'DRAGON MAN'

ballaratdragons is offline
 
Join Date: Jan 2005
Location: In the Dark at Snake Valley, Victoria
Posts: 14,412
Quote:
Originally Posted by Tamtarn View Post
Thanks for the call Ken
That's OK. Much easier than trying to explain it in posts
Reply With Quote
  #23  
Old 21-08-2007, 02:18 PM
Terry B's Avatar
Terry B
Country living & viewing

Terry B is offline
 
Join Date: Mar 2006
Location: Armidale
Posts: 2,790
Quote:
Originally Posted by Tamtarn View Post
Thanks for the input Terry.

We hope you can help us with this question.

One thing we are not sure about regarding the polar scope, after following all the instructions every thing is okay until we get to page 13 in the instruction book.

Preliminary Step : Determining the Zero Point on the Longitude Scale.
This is meant to put the reticle into proper orientation.

Do we have to do this procedure or is it only for the Northern Hemisphere?

Some say YES and others say NO .

When we look in to the reticle the overlay for Octans at the moment is completely upside down.

We don't want to touch the polar scope unless it is necessary.

Did you have to do this originally with your polar scope ?

Thanks

David
Dear David
I found this to be a problem initially as well. The first thing to note is that you need to do the polar align before you attach the scope to the mount because you will need to pivot the RA axis around to make the reticule align with the stars in Octans.
Take no notice of the zero point thing. It is only for polaris in the north.
My method is.
1. Plonk the mount down aiming it roughly south. No telescope or counterweights attached.
2. Level using the bubble.
3. Connect power but leave it turned off.
4. Find the 4 stars in octans and move the adjustments to put them one side of the centre.
5. Turn the mount on and orient the reticule as near to the stars as practical. I don't lock the RA clutch but let it sit. It is reasonably balanced with no counterweight and the bar extended. You then move both the mount and the reticle unti lthey line up nicely. Then tighten the bolt under the scope to stop any play.
This ss now pretty close. To impove it further I attach the scope and counterweights and aim the scope at the pole. I have almost no cone error so I just spin the scope on its axis adjusting the dec until the stas just spin in the eyepiece. It should then be aiming pretty much at the south pole. I have made a chart of the south pole and now know where the surrounding stars are. I then fine adjust the orientation of the mount. It will now be within a few arcmins of correct. Then lock the clutches and power it up. All done in about 3 minutes.

Hope this helps.
Reply With Quote
  #24  
Old 21-08-2007, 02:35 PM
Tamtarn's Avatar
Tamtarn
Barb and David

Tamtarn is offline
 
Join Date: May 2006
Location: Warragul. Victoria.
Posts: 2,293
Thanks a lot Terry

Just the info we needed. We will follow your instructions, sounds much simpler in your words than in the instruction manual.
Together with the advice from Ken we should be right now.

Thanks for getting back to the thread.
Reply With Quote
  #25  
Old 21-08-2007, 02:42 PM
Terry B's Avatar
Terry B
Country living & viewing

Terry B is offline
 
Join Date: Mar 2006
Location: Armidale
Posts: 2,790
Yor welcome.
I just read my own post. Shame about the typos.
Reply With Quote
  #26  
Old 21-08-2007, 07:28 PM
DaveO's Avatar
DaveO (David)
The Sunburnt Astronomer

DaveO is offline
 
Join Date: Mar 2006
Location: Brisbane, QLD
Posts: 285
Drift Alignment 101

I was always terrified of the complexities of dift alignment, until one of my fellow club members showed me the following simple rules:

Alignment in Azimuth
Pick a star on the meridan, near celestical equator:
- If star drifts North, scope too far East
- If star drifts South, scope too far West

Alignment in Altitude
Pick a star near Eastern horizon:
- If star drifts North, scope too low
- If star drifts South, scope too high

(or) Pick a star near Western horizon:
- If star drifts South, scope too low
- If star drifts North, scope too high

I did this at Astrofest, and had the scope aligned beautifully after a few minutes. I won't ever try getting on my knees for the polar scope again, regardless of how accurate it is!
Reply With Quote
  #27  
Old 21-08-2007, 08:01 PM
Tamtarn's Avatar
Tamtarn
Barb and David

Tamtarn is offline
 
Join Date: May 2006
Location: Warragul. Victoria.
Posts: 2,293
Thanks David

We are keen to use the polar scope as it seems to be the easiest way at this stage. Our previous attempts at drift aligning were frustrating as we spent hours each night to get it right. If we need to further fine tune our settings then we can re try drift aligning with the new mount.

Thanks for your input.

David
Reply With Quote
  #28  
Old 21-08-2007, 08:52 PM
[1ponders]'s Avatar
[1ponders] (Paul)
Retired, damn no pension

[1ponders] is offline
 
Join Date: Nov 2004
Location: Obi Obi, Qld
Posts: 18,778
I have a solution to your drift aligning problem David. Head on up to the Qld Astrofest next year and you can join the "[1ponders] School of Drift Aligning".

I'm expecting at least one of this years students to apply for the advanced course next year. Especially if he buys another new brand of mount or two. I don't think he's had a Vixen or Astrophysics or Paramount ME yet, 'eh Mister "h". .
Reply With Quote
  #29  
Old 21-08-2007, 09:14 PM
Alchemy (Clive)
Quietly watching

Alchemy is offline
 
Join Date: Jul 2007
Location: Yarra Junction
Posts: 3,044
Tamtarn. i see you made that mount desicion quickly... its all go from here.
Reply With Quote
  #30  
Old 21-08-2007, 09:31 PM
Tamtarn's Avatar
Tamtarn
Barb and David

Tamtarn is offline
 
Join Date: May 2006
Location: Warragul. Victoria.
Posts: 2,293
Not sure about enrolling in the "I Ponders School of Drift Aligning this year", but maybe one year.
In the meantime might have to check out if there is a corespondance course available.
A degree in Advanced Alignment sounds impressive Mister "h".
Reply With Quote
  #31  
Old 21-08-2007, 09:34 PM
[1ponders]'s Avatar
[1ponders] (Paul)
Retired, damn no pension

[1ponders] is offline
 
Join Date: Nov 2004
Location: Obi Obi, Qld
Posts: 18,778
I reacon if he practices each weekend he'll be just about ready for it
Reply With Quote
  #32  
Old 21-08-2007, 09:41 PM
Tamtarn's Avatar
Tamtarn
Barb and David

Tamtarn is offline
 
Join Date: May 2006
Location: Warragul. Victoria.
Posts: 2,293
Hi Alchemy

The main decision was if I would be able carry the heavier mount outside until we can build a roll of roof observatory for permanent mounting.( without the weights there was no problem at all )

The general advise from all including yourself was to go for the heavier mount and we are glad we did. Quite impressed with it so far.

David

Last edited by Tamtarn; 22-08-2007 at 10:34 PM.
Reply With Quote
  #33  
Old 21-08-2007, 09:43 PM
h0ughy's Avatar
h0ughy (David)
Moderator

h0ughy is offline
 
Join Date: Apr 2005
Location: NEWCASTLE NSW Australia
Posts: 33,428
Quote:
Originally Posted by [1ponders] View Post
I have a solution to your drift aligning problem David. Head on up to the Qld Astrofest next year and you can join the "[1ponders] School of Drift Aligning".

I'm expecting at least one of this years students to apply for the advanced course next year. Especially if he buys another new brand of mount or two. I don't think he's had a Vixen or Astrophysics or Paramount ME yet, 'eh Mister "h". .
yes wouldn't I have a best friend if it was a ME or a astrophysics. I will admit that K3ccdtools made it look easy, but its the operators skills that tendered the false evidence there.... yet to do that myself. its been raining ever since I bought astro goodies when I got home. I have bought K3ccdtools and dslr focus, oh and a baader MPCC, and have on order a DUP bar and a losmandy side by side bar - need to get a smaller weight though

I do however fully recommend Mr Ponders School
Reply With Quote
  #34  
Old 21-08-2007, 09:44 PM
h0ughy's Avatar
h0ughy (David)
Moderator

h0ughy is offline
 
Join Date: Apr 2005
Location: NEWCASTLE NSW Australia
Posts: 33,428
Quote:
Originally Posted by [1ponders] View Post
I reacon if he practices each weekend he'll be just about ready for it
I heard that
Reply With Quote
  #35  
Old 21-08-2007, 09:48 PM
[1ponders]'s Avatar
[1ponders] (Paul)
Retired, damn no pension

[1ponders] is offline
 
Join Date: Nov 2004
Location: Obi Obi, Qld
Posts: 18,778
Reply With Quote
  #36  
Old 25-08-2007, 09:36 PM
john.pullen1 (John)
Registered User

john.pullen1 is offline
 
Join Date: Aug 2007
Location: Geelong, Australia
Posts: 39
Quote:
Originally Posted by Tamtarn View Post
We purchased our EQ6 Pro with Synscan V3 from Bintel Melbourne last week.

We have a Skywatcher 8" f5 Newtonian mounted

Spent time getting our magnetic deviation and settings OK. Tried for a 3 star alignment on Thursday night and failed then the clouds rolled in again. Did a few more adjustments and then had cloud every night since.

Tonight was our first time to try again. Unfortunately we couldn't do a polarscope alignment because of the moonlight

Did a 3 star alignment and "alignment successful" Spent a bit of time doing goto's and targets were almost in the centre.

So now we have to wait for a moonless night so we can see Octans and align with the polarscope

Very impressed with the mount it's very sturdy and moves effortlessly and is remarkably quiet.
Love my EQ6, my only complaint is that the red led that liguts up the polarscope is far too dull, I use a red torch to provide a little red illumination.
Reply With Quote
  #37  
Old 25-08-2007, 10:05 PM
g__day's Avatar
g__day (Matthew)
Tech Guru

g__day is offline
 
Join Date: Dec 2005
Location: Sydney
Posts: 2,902
Don't you just wish the first folk to polar align could fire a powerful green laser down the tube, then everyone else just aim their mount's finderscopes for the end point of the light beam and they'd be kinda close!
Reply With Quote
  #38  
Old 26-08-2007, 12:29 AM
Tamtarn's Avatar
Tamtarn
Barb and David

Tamtarn is offline
 
Join Date: May 2006
Location: Warragul. Victoria.
Posts: 2,293
John we're still waiting for a night where we can test the polar scope out,but will keep the little red torch in mind
Reply With Quote
  #39  
Old 26-08-2007, 12:33 AM
Tamtarn's Avatar
Tamtarn
Barb and David

Tamtarn is offline
 
Join Date: May 2006
Location: Warragul. Victoria.
Posts: 2,293
g-day sounds like a good idea. Maybe at asto gatherings someone could be a nominated scp finder
Reply With Quote
  #40  
Old 26-08-2007, 01:06 AM
danielsun's Avatar
danielsun
Canon collector

danielsun is offline
 
Join Date: Oct 2005
Location: Taylors Lakes Melb
Posts: 1,965
Congrats on the new mount guys!!
Reply With Quote
Reply

Bookmarks


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT +10. The time is now 09:30 PM.

Powered by vBulletin Version 3.8.7 | Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
Advertisement
Astrophotography Prize
Advertisement
Bintel
Advertisement