#21  
Old 27-11-2015, 04:38 PM
Slawomir's Avatar
Slawomir (Suavi)
Registered User

Slawomir is offline
 
Join Date: Sep 2014
Location: North Queensland
Posts: 3,240
I totally agree with you Paul and Ray.

I image with 3nm filters so light is focused really well, thus stars are much tighter, even with my doublet, as opposed to RGB imaging. Here is an example of stars that have not been altered by deconvolution, sharpening nor any other tool: http://www.astrobin.com/full/227959/0/

And perhaps because of stars being fairly tight, tracking errors become more noticable, in my case RA axis is the worse one of the two.

I use an integrated OAG so flex is insignificant if not non-existent (it was a long and bumpy journey to get to that point!).

RA graph being on one side is not a problem at all; it is a result of lower aggressiveness and min error settings - increasing these settings in my case will usually lead to over-corrections (I use relatively short 1.5 s guide camera exposures with an OAG) and making star shapes worse. If the graph stayed on one side of the horizontal axis and at the same distance for the duration of a sub, it would mean nice smooth tracking and round stars (assuming DEC was excellent too and no flex).

Anyway, from what fellow astrophotographers have kindly explained, I gather that my AZ-EQ6 is not substandard and expecting consistent tracking as in the attached graph night after night is a bit unrealistic.
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 12:21 AM.

Powered by vBulletin Version 3.8.7 | Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Advertisement
Bintel
Advertisement
Testar
Advertisement