Username:

Password:

Altair AstroDIO DehumidifiersAtik CamerasModern AstronomyDavid HindsNe3 Filters

Author Topic: help with phd 2 guiding advanced setup  (Read 6184 times)

0 Members and 1 Guest are viewing this topic.

Offline doseri

  • New Member
  • *
  • Posts: 47
Re: help with phd 2 guiding advanced setup
« Reply #15 on: 18:22:58, 05 October, 2014 »
Maybe it's field rotation then if 3 min exposure looks okay.
You've done proper polar align ?
For the polar align is best I can't,do you think frome it ???? how to know if  is from polar alignment ????

Offline chris.bailey

  • Administrator
  • Galactic Poster
  • *****
  • Posts: 9682
  • If at last you do succeed, don't try again
    • Rosemount Observatory
Re: help with phd 2 guiding advanced setup
« Reply #16 on: 19:18:27, 05 October, 2014 »
Post up your 6 minute frame (just one) as a jpg at 800 wide and a jpg compression of 95% and it will give us a clue.

LX200|ZS70|FSQ85|FLT110|Altair DF250RC|EQ6 Pro(Rowan Belt Mod)|ParamountMX
ATIK383L+/EFW2/OAG|Lodestar|Baader 36mm LRGBHaSIIOIII
Starlight Express SXVRH16/ONAG/FW|Lodestar X2|Baader 2" Filters
Starlight Express SXVRH814/ONAG/FW|LodestarX2|Baader 2" Filters
Lunt LS60PTBF1200|DMK41|Quark Chromo
Samyang 135mm f1.8

Offline astropilch

  • Galactic Poster
  • ******
  • Posts: 9562
Re: help with phd 2 guiding advanced setup
« Reply #17 on: 21:37:55, 05 October, 2014 »
I use the Polar Finder App on Android. I think your problem is going to either poor polar alignment or balance. I pretty much use the default settings apart from the guide corrections but in PHD2 it can calculate optimum correction time if you know the focal length of your guide setup. My aggresiveness tends to hover around 70-80% with guiding corrections every 3 seconds...thats using a meade finder and Orion Starshoot. Try having the scope slighty nose heavy in Dec and slighty east heavy in RA.

Alan  :D
Orion Optics GX 200 f6
Vixen GPDX
Vixen Photo Guider
Pentax 7x50
Celestron 15x 70

Offline doseri

  • New Member
  • *
  • Posts: 47
Re: help with phd 2 guiding advanced setup
« Reply #18 on: 08:34:27, 06 October, 2014 »
My mount is the sky watcher neq6 pro., only 1 year old
Yes I think that from guiding if I do 3 min shoot the stars very sharp

hi

is the image of single 5 min image for  m45 ( Pleiades ):

https://www.dropbox.com/s/xy85vznh9x8kydx/m45_-002R.cr2?dl=0

and 4 min image for m33 (Triangulum Galaxy):

https://www.dropbox.com/s/233ftbtnpccdah0/m33_-0060.cr2?dl=0


Offline chris.bailey

  • Administrator
  • Galactic Poster
  • *****
  • Posts: 9682
  • If at last you do succeed, don't try again
    • Rosemount Observatory
Re: help with phd 2 guiding advanced setup
« Reply #19 on: 09:04:06, 06 October, 2014 »
Those images do not match up with the guide graph posted. The images show a marked shift of at least 10 arcseconds. I would say that is mechanical rather than guiding. Either something is not fully tightened on your imaging scope, or you have the mount too well balanced and you are getting rocking back and forth in the gear train. Is there any discernable play in either axis?
LX200|ZS70|FSQ85|FLT110|Altair DF250RC|EQ6 Pro(Rowan Belt Mod)|ParamountMX
ATIK383L+/EFW2/OAG|Lodestar|Baader 36mm LRGBHaSIIOIII
Starlight Express SXVRH16/ONAG/FW|Lodestar X2|Baader 2" Filters
Starlight Express SXVRH814/ONAG/FW|LodestarX2|Baader 2" Filters
Lunt LS60PTBF1200|DMK41|Quark Chromo
Samyang 135mm f1.8

Offline doseri

  • New Member
  • *
  • Posts: 47
Re: help with phd 2 guiding advanced setup
« Reply #20 on: 10:03:24, 06 October, 2014 »
Those images do not match up with the guide graph posted. The images show a marked shift of at least 10 arcseconds. I would say that is mechanical rather than guiding. Either something is not fully tightened on your imaging scope, or you have the mount too well balanced and you are getting rocking back and forth in the gear train. Is there any discernable play in either axis?
Any advice where I start from

Offline chris.bailey

  • Administrator
  • Galactic Poster
  • *****
  • Posts: 9682
  • If at last you do succeed, don't try again
    • Rosemount Observatory
Re: help with phd 2 guiding advanced setup
« Reply #21 on: 10:06:12, 06 October, 2014 »
Is there any discernable play in either axis?
LX200|ZS70|FSQ85|FLT110|Altair DF250RC|EQ6 Pro(Rowan Belt Mod)|ParamountMX
ATIK383L+/EFW2/OAG|Lodestar|Baader 36mm LRGBHaSIIOIII
Starlight Express SXVRH16/ONAG/FW|Lodestar X2|Baader 2" Filters
Starlight Express SXVRH814/ONAG/FW|LodestarX2|Baader 2" Filters
Lunt LS60PTBF1200|DMK41|Quark Chromo
Samyang 135mm f1.8

Offline doseri

  • New Member
  • *
  • Posts: 47
Re: help with phd 2 guiding advanced setup
« Reply #22 on: 10:31:45, 06 October, 2014 »
Is there any discernable play in either axis?
No play in either axis

Offline chris.bailey

  • Administrator
  • Galactic Poster
  • *****
  • Posts: 9682
  • If at last you do succeed, don't try again
    • Rosemount Observatory
Re: help with phd 2 guiding advanced setup
« Reply #23 on: 10:51:39, 06 October, 2014 »
Sam

Its very hard to remote diagnose this but I do think its mechanical rather than guiding. Something is moving back and forth by about 10 arcseconds (assuming an image scale of about 2.5"/pxl). With EQ mounts it is common practice to slightly unbalance to keep the gears meshed. Other than that make sure everything else is done up nice and tight. 10" is not a lot of movement but enough to ruin images.

Chris
LX200|ZS70|FSQ85|FLT110|Altair DF250RC|EQ6 Pro(Rowan Belt Mod)|ParamountMX
ATIK383L+/EFW2/OAG|Lodestar|Baader 36mm LRGBHaSIIOIII
Starlight Express SXVRH16/ONAG/FW|Lodestar X2|Baader 2" Filters
Starlight Express SXVRH814/ONAG/FW|LodestarX2|Baader 2" Filters
Lunt LS60PTBF1200|DMK41|Quark Chromo
Samyang 135mm f1.8

 

ukbuysellRemote Imaging from AustraliaSharpSkyblank APTUKAI on Facebook
TinyPortal © 2005-2012