30 minutes of recording produced a total of 354 unique frames that were extracted from the DVD and stacked with Deep Sky Stacker using a scaled darkframe (derived from stacking 127 frames in Registax).
The scaling could be more accurate, but that is for the future.
This is the resulting image of M57.
The final colour balance and processing was done in The Gimp.
An 0.5 focal reducer lens was placed on the camera and 51 unique frames were recorded to DVD before clouds stopped the session. The frames were stacked in Deep Sky Stacker using a scaled dark frame as above.
This is the resulting image of M27
Some coma was introduced by the reducer, but was not serious. The final colour balance and processing was done in The Gimp.
If you are interested in observing or imaging the Sun, take a look at my eBook on 'Observing and Imaging the Sun with Modest Equipment'.
Dont forget to click on 'Older Posts' or 'Newer posts' below or browse the 'blog archive' on the left, or click on 2009 to see all of the posts for this year on one page.