View Single Post
  #20  
Old 06-12-2008, 09:53 AM
TrevorW
Registered User

TrevorW is offline
 
Join Date: Aug 2006
Posts: 6,995
Quote:
Originally Posted by Bassnut View Post
If you dont cool the cam, just use ICNR, so Darks will track the image temp. Imaging sessions will take twice as long, but I saw an M42 pic Mike Salway did this way, and it looked very low noise.
I did a series of 35 2min exposures of M45 last night between 9:00 and 10:30 pm attached is the first exposure and the last. (temp varied from around 18-15C) INCR was off but it may be the way to go on warmer nights, I might give that a try tonight to see how much difference it makes.

I don't know if two minutes is too long for this object but even after applying lights and darks I can't get a good image with about 1 hrs worth of exposure.

(the first image was compressed to 8 in PS7 whereas the second I had to set as 4 to get under the size for posting both where saved at 800 x 532)

Attached Thumbnails
Click for full-size image (m45 1.jpg)
110.9 KB12 views
Click for full-size image (m45 2.jpg)
112.6 KB7 views
Reply With Quote