#1  
Old 22-12-2014, 09:29 PM
Andy01's Avatar
Andy01 (Andy)
My God it's full of stars

Andy01 is offline
 
Join Date: Mar 2012
Location: Melbourne
Posts: 2,286
Astro Forensics required...

Who wants a crack at forensics?

WTF is this? Turned up when I started shooting flats sat evening.
Restarted the laptop, camera & program several times but it wouldn't go away.

Finally in desperation, I removed the camera from the 'scope, removed all leads, re-connected everything, restarted everything and bingo - happy days, no more stripes.

Camera was cooling down during this, could that affect the flat like this?

weird...
Attached Thumbnails
Click for full-size image (Screen Shot 2014-12-22 at 10.01.28 PM.jpg)
97.3 KB54 views
Reply With Quote
  #2  
Old 23-12-2014, 08:04 AM
philiphart's Avatar
philiphart (Phil Hart)
Registered User

philiphart is offline
 
Join Date: Jan 2007
Location: Melbourne
Posts: 1,060
Definitely shouldn't be cooling doing that.

Maybe USB problem?

Phil
Reply With Quote
  #3  
Old 23-12-2014, 08:20 AM
graham.hobart's Avatar
graham.hobart (Graham stevens)
DeepSkySlacker

graham.hobart is offline
 
Join Date: Nov 2008
Location: hobart, tasmania
Posts: 1,991
forensics

I while a go had lots of lines on images- it was EM disturbance from a power cable near the USB cable. If it went away when you unplugged and replugged maybe you moved the power cable away from the USB?
just a thought
Graz
Reply With Quote
  #4  
Old 23-12-2014, 08:40 AM
multiweb's Avatar
multiweb (Marc)
ze frogginator

multiweb is offline
 
Join Date: Oct 2007
Location: Hinchinbrook
Posts: 18,185
I've had this issue once with a QHY8. The cable pins weren't connected properly and the TEC wasn't cooling. So you'll get those stripes when the sensor is close to ambient.
Reply With Quote
  #5  
Old 23-12-2014, 09:22 AM
Amaranthus's Avatar
Amaranthus (Barry)
Thylacinus stargazoculus

Amaranthus is offline
 
Join Date: Jan 2014
Location: Judbury, Tasmania
Posts: 1,202
This is a QSI683, right Andy? Check out the QSI Yahoo group - there has been discussion on this problem.
Reply With Quote
  #6  
Old 23-12-2014, 11:28 AM
Andy01's Avatar
Andy01 (Andy)
My God it's full of stars

Andy01 is offline
 
Join Date: Mar 2012
Location: Melbourne
Posts: 2,286
Quote:
Originally Posted by philiphart View Post
Definitely shouldn't be cooling doing that.

Maybe USB problem?

Phil
Or maybe a combination of both? It showed up once before - co-incidentally when I was cooling the cam and shooting flats - but it went away quickly last time - maybe as the ambient temp was higher last weekend it took longer to stabilize the cam? Some other folks here have also raised some interesting USB options.

Quote:
Originally Posted by graham.hobart View Post
I while a go had lots of lines on images- it was EM disturbance from a power cable near the USB cable. If it went away when you unplugged and replugged maybe you moved the power cable away from the USB?
just a thought
Graz
Couls be, I usually use a powered USB hub. I removed it as well during the diagnostics and chose not to use it after that when the cam was working again

Quote:
Originally Posted by multiweb View Post
I've had this issue once with a QHY8. The cable pins weren't connected properly and the TEC wasn't cooling. So you'll get those stripes when the sensor is close to ambient.
...and there you go! So it could well be cooling related Time to drag it out and do a few more tests methinks.

Quote:
Originally Posted by Amaranthus View Post
This is a QSI683, right Andy? Check out the QSI Yahoo group - there has been discussion on this problem.
Great idea, will do. Thanks
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 10:17 AM.

Powered by vBulletin Version 3.8.7 | Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
Advertisement
SkyWatcher Australia
Advertisement
Bintel
Advertisement
Celestron Australia
Advertisement
OzScopes Authorised Dealer
Advertisement
Lunatico Astronomical
Advertisement
Meade Australia
Advertisement
NexDome Observatories
Advertisement
Astronomy and Electronics Centre
Advertisement