ICEINSPACE
Most Read Articles
Moon Phase
CURRENT MOON Full Moon
99.4%
The Sun Now
Time Zones
Sydney*
5:27 pm
Perth
2:27 pm
Auckland*
7:27 pm
New York
1:27 am
Paris
7:27 am
GMT
6:27 am




Go Back   IceInSpace > Equipment > Astrophotography and Imaging Equipment and Discussions

Reply
 
Thread Tools Rate Thread
  #21  
Old 24-10-2017, 10:14 PM
Andy01's Avatar
Andy01 (Andy)
My God it's full of stars

Andy01 is offline
 
Join Date: Mar 2012
Location: Melbourne
Posts: 2,008
Quote:
Originally Posted by Moon View Post
Andy
I've used a similar combo (EQ6 + PHD + GSO RC8) and the guiding can be tricky! ... this might help https://deepspaceplace.com/gso8rccollimate.php

Cheers
James
Thanks James, appreciate your thoughts and input here - and I'll surely try that collimating method you've documented so well!
Hopefully it will work with my QSI as well as it did with your Canon.
Seems though that a better focuser is mandatory with the QSI - it's a heavy beast!

PS: I've since managed to throw together a rough colour "First Light" as is LRGB test image from data gathered before VicSouth.
Clearly shows up the limitations of the std focusser & my first attempts at collimation!
Attached Thumbnails
Click for full-size image (1365_FB.jpg)
106.3 KB34 views
Reply With Quote
  #22  
Old 25-10-2017, 09:29 AM
Trekrider (Barry)
Registered User

Trekrider is offline
 
Join Date: Sep 2017
Location: Perth, WA
Posts: 51
I'm watching this thread with great interest Andy as I too have just got a GSO CF RC8 which I'm running on an EQ6-R mount with PHD2. I think your comment about the focusser being 'substandard' is very generous - I wouldn't rate mine that highly but I do have a Feathertouch Lightweight focusser on order for it.

Did you have any luck sourcing a Dew heater for the secondary?
Reply With Quote
  #23  
Old 25-10-2017, 09:40 AM
Andy01's Avatar
Andy01 (Andy)
My God it's full of stars

Andy01 is offline
 
Join Date: Mar 2012
Location: Melbourne
Posts: 2,008
Quote:
Originally Posted by Trekrider View Post
Did you have any luck sourcing a Dew heater for the secondary?
Hi BArry, I called Bintel - they're out of stock - We'll have to get one from here - http://www.kendrickastro.com/rcoptics.html

Cheers

AC
Reply With Quote
  #24  
Old 25-10-2017, 09:58 AM
Trekrider (Barry)
Registered User

Trekrider is offline
 
Join Date: Sep 2017
Location: Perth, WA
Posts: 51
Quote:
Originally Posted by Andy01 View Post
Hi BArry, I called Bintel - they're out of stock - We'll have to get one from here - http://www.kendrickastro.com/rcoptics.html

Cheers

AC
Thanks Andy, I was thinking I would have to go to them as well.
Reply With Quote
  #25  
Old 25-10-2017, 01:18 PM
Moon's Avatar
Moon (James)
This sentence is false

Moon is offline
 
Join Date: Oct 2008
Location: Melbourne
Posts: 1,147
Andy
That's an interesting image. The star at the top right looks okay, but on the others it looks like mis-registration of the colors - can you process again or just do a stack without registration to see what is going on over time. I can't really see any 'bumps' in the stars that would indicate poor tracking, but it does look like your collimation is out and maybe some field curvature too.

Remember - a new focuser won't fix tracking or poor collimation - so it's best to get those sorted first. Is the focuers slipping or just wobbly? Mine is holding up a STL 11k - which is a very heavy camera btw.

James

Edit - btw I can see potential here!

Last edited by Moon; 25-10-2017 at 01:33 PM.
Reply With Quote
  #26  
Old 25-10-2017, 09:09 PM
PRejto's Avatar
PRejto (Peter)
Registered User

PRejto is offline
 
Join Date: Jan 2011
Location: Sydney, Australia
Posts: 1,264
Andy,

If you are not doing so already I would recommend binning your guide camera 2x2 at this longer focal length. You will see a big improvement. At 1x1 the resolution is too high and you will chase seeing all over the place.

Peter
Reply With Quote
Reply

Bookmarks

Thread Tools
Rate This Thread
Rate This Thread:

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 04:27 PM.

Powered by vBulletin Version 3.8.7 | Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
Advertisement
SkyWatcher WiFi Adaptor
Advertisement
FLI Cameras and Imaging Accessories
Advertisement
Bintel
Advertisement
SkyWatcher 2018 Catalogue
Advertisement
Interest Free Finance
Advertisement
Lunatico Astronomical
Advertisement
OzScopes Authorised Dealer
Advertisement
NexDome Observatories
Advertisement
Astronomy and Electronics Centre
Advertisement